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2012年9月18日 星期二

Many Uses For Ultrasound Machines


Whenever one hears the word: ultrasound, what usually comes up is a newly-pregnant couple proudly showing their family and friends a photo or even a video of their unborn. But there are a surprising number of other uses for ultrasound technology and machines, because it is one of the most non-invasive ways to examine and diagnose. By scanning the pregnant woman's uterus, the doctor can tell the sex as well as check the position of the unborn baby, but the doctor can now also check the internal organs, the eyes, the brain for irregularities as well as the placenta and since the early 90s, doctors can also use ultrasound to screen for chromosomal abnormalities, accurately predicting a Down's syndrome fetus.

In gynecology, the machines are used to diagnose solid or cystic masses in the pelvic area, using probes developed for this specific purpose. Custom probes are also used to examine males for prostate and colon problems.

Ultrasound machines are also used to examine a patient's thyroid, gall bladder, spleen, breasts and other organs. They can be used to locate a foreign object in the eye and are being used in fine needle biopsy procedures since a doctor can see the moving image of the needle penetrating tissue.

In the animal world, the Department of Animal & Dairy Science at Mississippi State University has pioneered the use of ultrasound in the examination of bovine carcasses, which has "revolutionized our basic understanding of the biology in cattle," leading to better more efficient management of beef production. But it doesn't stop there. Most veterinarians use ultrasound machines to probe cats, dogs, sheep, goats, horses and cows to make quick diagnoses.

Ultrasound machines are also used by physical therapists for penetrating tight and spasmodic muscles with relaxing deep tissue heat and to treat fibromyalgia, arthritis and other musculoskeletal injuries. The ultrasound process causes vasodilatation increasing circulation to the area, promoting healing.

Now miniaturized, portable ultrasound devices can be purchased for as little as $9,000 and some internists are carrying these devices to make on-the-spot diagnoses ever more accurate. This practice should become more common as the price of these hand-carried ultrasound (HCU) devices keeps coming down. Not quite the same as the devices used in the original Star Trek series by Dr. "Bones" McCoy, but it's a start!




Raymond helps others to understand more about ultrasound machine by writing articles related to the application of ultrasound machines, 3D & 4D fetal ultrasound Scan, breast ultrasound scan and etc.





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2012年9月8日 星期六

Ultrasound Machines - What's This For?


Most medical conditions and diseases are much less likely to be fatal than in decades past, thanks to advances in medial science. Medical diagnostics allow most disorders to be caught earlier, thus allowing treatment to begin more quickly and accurately. The popularity of ultrasound machines, which use high frequency sound waves to detect problems in patients' internal organs, has made rapid accurate diagnosis much easier.

Ultrasound machines have been especially helpful in diagnosing cardiac diseases. We know the criticality of heart in a healthy human body. In their initial stage, heart diseases can be cured through medicine and surgery. However, without a proper diagnostic tool, it was very difficult to ascertain a heart ailment earlier. Medical imaging of heart has drastically reduced the number of patients dying due to heart ailments.

Let us take a look at some of the workings of ultrasound machines. All machines have what is known as a transducer probe, which both emits and receives the ultrasound waves. Pulse controls are used to control the different wave properties of frequency, duration, and amplitude. Other components of the machines include a CPU, a mouse, a display, and a printer.

Ultrasound works by sending ultrasonic waves into the part of the body being examined. When interrupted by abnormal tissue such as tumors or the boundaries between tissues, the ultrasonic waves are reflected or echoed. The ultrasound machine calculates the distances traveled by those reflected waves to generate 2D images that display the distances and intensities of those echoes.

Internal organs can be sound through the aid of an ultrasound machine. A radiologist can use the machine's controls to view a specific section of any organ. Ultrasound scans are perfectly safe and have no side effects. Medical personnel can even use mobile machines in an emergency.

However, ultrasound imaging is still a medical procedure, and as such, should only be administered by a medical professional trained in radiology. A novice would not be able to properly interpret the results. Also, long term exposure to ultrasound waves has negative physical side effects, and an expert is necessary to regulate the equipment to avoid long term problems.




Ultrasound machines have given medical imaging diagnostics quite a boost since they have gained popularity. The ultrasound uses high frequency sound waves to make visuals of internal organs and tissues. Since cardiac health is a top priority in maintaining overall health, the use of ultrasound has given doctors the jump on once-fatal conditions. Before ultrasound, it was virtually impossible to catch heart ailments before they progressed into more advanced, less curable stages. Since the advent of ultrasound, the number of patients who die of heart problems has decreased substantially. Ultrasound imaging is a medical procedure and therefore only a doctor trained in radiology should perform it.





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2012年9月2日 星期日

Ultrasound Machines & Ultrasound


Ultrasound machines used for diagnostic imaging or therapy emit ultra sound (high-frequency) waves that penetrate different types of tissue in the body. Diagnostic equipment produces images without using harmful radiation as with x-rays. Due to the fact that ultrasound machines do not produce any ionizing radiation it is very safe for human beings.

With their own easily obtainable ultrasound machines, doctors' offices and clinics are able to examine various organs in the body on-site without having to send patients to the hospital or expensive medical imaging centers. Compared to magnetic resonance imaging (MRI) and computed tomography (CT), ultrasonography is relatively inexpensive and the equipment is very portable. With today's healthcare environment ultrasound can be considered the most cost effective modern imaging modality.

What is Ultra Sound?

Ultra- is used to describe sound waves as in "ultrasound", that which exceeds a frequency that a human ear can detect. Normally a human ear can hear approximately 20 hertz to 20,000 hertz (1 hertz is one cycle per second). Ultra sound, used for diagnostic imaging or therapy, can be employed to analyze or treat medical conditions. It applies cyclical sound pressure pulsed at a frequency higher than the human ear can detect, or 20,000 hertz, hence the name ultrasound.

Components of an Ultrasound Exam

Sonographers & Ultrasound Technologists are trained operators of ultrasound machines Central Processing Unit (CPU) - The ultrasound machine's brain. The computer that contains the microprocessor, memory, amplifiers and power supplies for the microprocessor and transducer probe. The CPU sends electrical currents to the transducer, which in turn sends electrical pulses that bounce off of the target and return echoes. The CPU calculates the location of thousands of points of echo origins to produce an image for output such as a monitor, a printer, a network drive; or a disk. Transducer Pulse Controls - The transducer pulse controls can set and vary the frequency, amplitude and duration of the ultra sound pulses. Electrical currents are applied to the piezoelectric (PZ) crystals in the transducer/ probe^, as selected by the operator. Display - The display turns processed data from the CPU into an image. Sonogram images have typically been black-and-white, but newer ultrasound machines can produce color Doppler images.Keyboard/Cursor - Ultrasound machines have a keyboard and a cursor. The keyboard allows the operator to add notes and to take measurements of the image; the mouse enables the operator to interact with the ultrasound machines software.Disk Storage - The processed data and/or images can be stored. Storage can include hard disks, compact disks (CDs), digital video disks (DVDs), or a network drive. Most of the time, ultrasound machines store data with the patient's medical records.Ultrasound Printers - Most ultrasound machines have thermal or digital printers connected to them. Ultrasound images are in motion (real time), but a still/ frozen image can be captured at any point and sent to the printer for printing.

Ultrasound Uses

Ultra sound machines can be used on many objects, typically to penetrate them and evaluate the reflections that occur, or to supply concentrated energy. The ultra sound reflection signature can detail the internal structure of the medium. The most well known exam performed on ultrasound machines is the obstetric ultrasound exam (imaging of the fetus). While many people relate this applied science with obstetrics only, there are many other applications for ultrasound technology. Now a days ultrasound is performed in small offices and private clinics. Within the last decade many endocrinologists and otolaryngologists have turned to performing ultrasound exams in the comfort of their own offices.

Identifying and diagnosing many ailments using ultrasound imaging has steeply declined our death rate from a variety of diseases and conditions. Medical diagnosis, which is crucial in disease treatment, has been a chief cause in the overall improvement of healthcare outcomes. Ultrasound machines have given a huge boost to medical diagnosis. Ultrasound machines can visualize problems in patients' organs and other tissues by bouncing ultra sound waves off of them and using a computer to plot the many points received and portrays these plots into images on a monitor or print them onto thermal paper.

Diagnostics - Capture size, structure, and any pathological lesions; Scans routinely conducted are obstetric, cardiac, renal, hepatic (liver) and gallbladder. Other applications include musculo-skeletal (imaging of muscles, ligaments and tendons), endocrinology and otolaryngology (thyroid, salivary glands, and lymph nodes), ophthalmic ultrasound (eye) scans and other superficial structures such as breast and testicles. Ultrasound is also increasingly being used in trauma and first aid cases by (the likes of) EMT response teams. Because of the real time nature of ultrasound, it is often used to guide interventional procedures such as fine needle aspiration FNA or biopsy of masses for cytology or histology testing in the breast, thyroid, liver, kidney, lymph nodes. Vascular scans are possible with the use of Doppler to display blood flow. Doppler is also being used to evaluate the blood flow of organs and cancerous regions.

Therapeutic - pulverize kidney- and gall-stones; focused ultrasound surgery; acoustic targeted drug delivery; cataract treatment; stimulate tooth and bone growth; non-surgical treatment of varicose veins; liposuction and lipectomy; bacterial cell killing; and acoustophoresis (contactless separation, concentration, and manipulation of microparticles and biological cells). Again the real time nature of ultrasound assists in injecting medications into muscles and joints.
Industrial
Cleaning - teeth and medical / dental instruments
Humidifiers
Echo Location & Range Finding
Chemistry
Weaponry

How Ultrasound Machines Work

Ultrasound machines have what is known as a transducer/probe, which emits and receives the ultrasound waves. Pulse controls are used to control the different wave properties of frequency, duration, and amplitude. Other components of the machines include a CPU, a mouse or trackball, a display, and a printer.

Sound waves coming from the ultrasound machine's transducer reflect off the target to help determine the size, shape, and depth of the region of interest. During a typical ultrasound exam millions of pulses and echoes are sent and received from the probe each second. Ultrasound waves come from small vibrations or waves going through matter. Although ultra sound waves are sound waves, they are inaudible. This is because the frequency is too high for human beings to hear.

Ultrasound machines use ultra sound waves to image internal organs. These waves are emitted by the machine and bounce back when they collide with normal tissue or tumors. The reflections occur at boundaries between different tissue types. The machine times the reflections to calculate distances and generate images of the organs. The different shades in an ultrasound image are equivalent to the intensities of the reflectors.

Ultrasound machines provide the ability to view live images of our internal organs. By using the controls provided, a sonographer can view the exact section of an internal organ. (Portable machines are also available for emergency medical teams.)

How an ultrasound is done?

In an ultrasound scan, a real-time scanner forms a continuous range of images of a subject and places it on the monitor. A transducer is used to produce these waves. The recurring ultrasound beams scan the subject and then go back to the transducer after reflection. The data obtained from the different reflections recomposed in the form of a picture that is displayed on a screen.

Ultrasound imaging is a complex medical procedure that requires prior training. The potential health risks that generated high frequency waves can produce damaging the body tissue if exposure is too lengthy warrant this. As such, only professional doctors and registered diagnostic medical sonographers with experience in their field of expertise can correctly regulate the duration of an exam.

Is Ultrasound Safe?

Loudness is measured in decibles (dB) not frequency. The loudness at which medical ultra sound waves are applied is less than 120dB. Ultra sound frequency is an inaudible 20,000 hertz. Yes it's safe, except:


Excess of 120 dB may lead to hearing loss.
Excess of 155 dB may harm the human body due to heat.
Exposures above 180 dB may lead to death.

When applied by trained ultrasound technologists or sonographers, ultrasound machines are generally safe with no known risks to patients because ultra sound machines do not use mutagenic ionizing radiation. If applied at length or at higher than diagnostic power, there potentially could be three effects created by ultrasonic energy: These could be enhanced inflammation; heating of soft tissue from molecular friction; and/or production of microscopic bubbles in living tissues which creates distortion of the cell membrane. This though is not known to occur at diagnostic power levels used by modern diagnostic machines.

* ultra and high frequency are interchangeable

^ transducer and probe can be used interchangeably




Ultrasound machines by Biosound Esaote are well suited to diagnosing endocrinological and otolaryngological issues, and are offered exclusively in America by DrSmart.com, Smartsound Ultrasound.

Ultrasound machines use Ultra sound in a generally safe manner. What makes medical sonography safe is its high frequency and low loudness, lack of radiation, and skillful application by trained sonographers. When it comes to ultrasound, machines of this complexity are only to be used by trained ultrasound technicians or sonogram machine operators who are experts in medical ultrasound. Machines are very expensive and highly advanced.





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2012年9月1日 星期六

Home Ultrasound Therapy Machines For Fibromyalgia Treatment


Fibromyalgia is a never-ending, health circumstance that is best described by defining its symptoms. These include, but definitely are not limited to: all-over body pain in the muscles, ligaments and tendons; numerous sore-to-the-touch areas on the body, or tender points, where even the slightest strain causes immense pain and recurrent tiredness even after lengthy sleep. The indications of Fibromyalgia can vary according to the time of day, weather, stress and/or physical activity. There are no medical tests for Fibromyalgia. Doctors must first rule out all other conditions that could be causing these symptoms before diagnosing a patient with Fibromyalgia.

Experts theorize that people with Fibromyalgia never truly reach the profound restorative phase of sleep, and that is where the exhaustion comes from. Those with the condition can sleep for extensive periods of time and still wake up feeling tired. A couple of sleep disorders associated with Fibromyalgia are Restless-Leg Syndrome and Sleep Apnea.

Experts have also come up with a theory of why those with Fibromyalgia feel pain. They believe those with the condition have a lower limit to pain because of heightened feelings in the brain to pain stimuli. They also believe that those with the condition have repetitive nerve stimulus that causes the brain to change. The brain simply overreacts to pain signs.

The intense, chronic pain and sensitivity in muscles and ligaments experienced by Fibromyalgia sufferers can be debilitating and persistent. Although more common in females, Fibromyalgia can happen to anyone and occur at any time. The largest obstacle with Fibromyalgia is that there is no known cure, which means a lifetime of pain relieving drugs, such as NSAIDS (Non-Steroidal Anti-Inflammatory Drugs) or other specialized medications. Such prescriptions can be expensive and have unpleasant side effects.

Other treatment options for Fibromyalgia include, hot and cold packs, stretching, regular exercise and ultrasound therapy. Therapeutic ultrasound for the treatment of fibromyalgia can provide deep tissue stimulation and pain relief. Ultrasound physical therapy can be a very effective way to manage the pain of Fibromyalgia.

Ultrasonic waves penetrate the skin to cause vibrations in tendons and soft tissues, providing gentle deep tissue heating that decreases pain and inflammation to speed healing. Ultrasound therapy increases blood flow and oxygen to tendons as well as relaxes muscles and decreases swelling. Ultrasound can be used as a pain therapy system to control Fibromyalgia pain flare-ups and can now be used in the comfort of your very own home.

Home ultrasound machines are now available for ultrasound Fibromyalgia treatments and rehabilitation. Visits to a chiropractor or physical therapist office for ultrasound physical therapy can be expensive and inconvenient, but it is now possible to rehab Fibromyalgia, and many other chronic injuries, in the comfort of your own home.

Because Fibromyalgia involves soft tissue inflammation, a specific kind of home ultrasound machine is required for treatment. A home ultrasound physical therapy machine should emit 1Mhz ultrasound waves. It is also important to purchase an FDA approved ultrasound unit that is quality manufactured. Your portable therapeutic ultrasound device should also be covered with at least a 1 year warranty.

Because these home ultrasound machines utilize pulsed ultrasound waves, they are very safe for use by the general public. Pulse ultrasound also is just as effective as continuous wave ultrasound that is used by doctors, but in home treatments will just be more often. With a portable therapeutic ultrasound machine, you can treat your bursitis daily when it is most convenient for you.




Christine Beggs is the founder and CEO of EZUltrasound.com, the leading provider of portable home ultrasound machines to relieve pain and speed healing. Over the past 2 years, Christine has strived to deliver affordable, therapeutic ultrasound machines to anyone who needs them. Working closely with doctors and physical therapists, Christine has first hand knowledge of ultrasound therapy, its benefits and applications, and has a passion for sharing this knowledge in her articles. She developed EZUltrasound.com to relay her continual dedication to improving the quality of people's lives through the use of therapeutic ultrasound. To find out more, please visit www.EZUltrasound.com.





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2012年8月31日 星期五

Using Ultrasound Therapy Machines to Reduce Joint and Muscle Pain


Ultrasound therapy machines are used by trainers, chiropractors, and therapists for treating joint pain, arthritis pain, and muscle pain. Many people believe that this type of therapy alleviates their pain and also helps in their healing process.

In the ultrasound therapy, very high frequency sound waves generated by the ultrasound machines are allowed to deeply penetrate the skin of your painful or injured area. In this procedure, a probe or wand with a rounded head, which is further attached to a home ultrasound machine, is used by holding it in hand. A gel is rubbed on the skin and the probe head is then gently moved on the affected body area by making small circular motions.

The ultrasonic (high frequency) waves are generated by the vibration on the head of the hand held probe. These waves then travel all through the skin causing tissue vibration in the affected areas of the body. This vibration of tissues heats them up, resulting in many beneficial effects on the injury. This is so because now the heated area draws more blood as a result of which large amounts of nutrients are delivered to the affected area. The main aim here is to somehow increase the flow of blood so that large amounts of nutrients reach the affected cell tissues.

The dosage of therapeutic ultrasound can easily be varied by slightly altering the frequency of the ultrasound beam. All the necessary controls for achieving this are placed on the control panel of ultrasound machine. A much deeper penetration of waves is achieved when the frequency is lowered, successfully dealing with any deep tissue injury.

High frequency dosages are normally used for all those injuries which are much closer to surface of the skin. A normal therapy session lasts about 4 - 12 minutes depending upon the injury.

There are some areas which should be avoided during the usage of ultrasound therapy machines. You should never use ultrasound therapy machines near the brain, spine, face, lungs, liver, kidneys, testicles, or ovaries. Care should also be taken when ultrasound therapy machines are used on pregnant women or people taking coagulant medicines.

Ultrasound therapy is usually safe when it is administered by some trained person or therapeutic professional. This is due to the ability of the handheld probe to burn the surface tissues or even cartilage and bones if continuously, kept in place, on some area for a long duration.

Ultrasound therapy machines are now also available for fibromyalgia treatment and rehabilitation. As fibromyalgia involves a soft tissue inflammation, therefore a particular type of portable ultrasound machine is used in its treatment. It is essential to purchase quality ultrasound therapy machines, which are approved by FDA. They should also be covered with a minimum one year warranty.

Today you can also purchase ultrasound therapy machines for personal use at home. These models would cost you few hundred dollars. You should however consult your doctor before using such ultrasound therapy machines.




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Christine Beggs is the founder and CEO of EZUltrasound.com, the leading provider of portable home ultrasound machines to relieve pain and speed healing. Over the past 2 years, Christine has strived to deliver affordable, therapeutic ultrasound machines to anyone who needs them. Working closely with doctors and physical therapists, Christine has first hand knowledge of ultrasound therapy, its benefits and applications, and has a passion for sharing this knowledge in her articles. She developed EZUltrasound.com to relay her continual dedication to improving the quality of people's lives through the use of therapeutic ultrasound. To find out more, please visit www.EZUltrasound.com.





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2012年8月27日 星期一

Used Ultrasound Machines Fill a Great Need in Society


A young lady enters the local crisis pregnancy center. She is scared and confused,

not sure what her next step should be. A friend told her about this center, so she decided to come.

Frightened at what her future may hold, she is looking for answers, and help.

As she talks with the volunteer on staff, she begins to relax a bit.

She feels more comfortable, accepted and understood. The staff member then asks her

if she would like to see her baby inside her womb. Her heart leaps into her throat

as she asks, "How can I do that?" It is then revealed to her that a wonderful

donation to the center allows them to view the baby, and that gift is an used ultrasound machine.

The Function and Impact of an Used Ultrasound Machine

There are many used ultrasound machines available which have only been used

for a short time before being discarded for a newer more advanced model.

In reality, the earlier used models still work perfectly well and are available for purchase.

Many companies sell these used ultrasound machines to various places.

For example, there may be a clinic that is set up in a low-income community

which does not have the funds for the latest and best technology.

Used ultrasound machines can be purchased for much less than their new proteges.

Also, in other countries where people live in extreme poverty, there is no access

to technology such as this. Yet, mission doctors may come in with a used ultrasound

machine that allows medical help to be administered that never would have been

possible otherwise. Used ultrasound machines work just like the newer models,

yet the images on the screen may be a little grainy or fuzzy,

whereas the newer models are crystal clear.

Used Ultrasound Machines Can Make a Difference

Many companies refurbish used ultrasound machines which have been damaged somehow.

They may just be an older model in need of general restoration such as cleaning

and minor maintenance. The machine may have been damaged during transport and

received extensive mechanical work.

Regardless, the used ultrasound machine can be a welcome addition to any clinic

whose finances do not allow for the latest models. Many less fortunate in society

can benefit from these machines, which are sometimes given as donations in order

to enhance the lives of those who come through the doors of the clinic.

© Bernard Lopez - Used-Ultrasound-Machines.com




Bernard Lopez has worked as distributor in some companies in the ultrasound field as Medison ultrasound machines, GE ultrasound equipment and Philips Ultrasound. He contributes with his experience at his web site : Refurbished and used ultrasound machines.





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2012年8月25日 星期六

Ultrasound Tranducers for Use With Ultrasound Machines


When imaging the body with ultrasound, ultrasound transducers are a key component of the imaging process. Without a transducer, the image cannot be obtained.

There are many types of ultrasound transducers and they vary in size and shape and depending on what part of the body that is being imaged will dictate what type of transducer will be used.

If you are having an abdominal ultrasound, most likely a curvilinear transducer will be used with a frequency of anywhere from 2.0 megahertz to 7.5 megahertz.

If you are having an ultrasound of your thyroid, most likely the transducer will have a frequency of 10 megahertz because the thyroid is not a deep structure and therefore will need a high frequency transducer.

If you are having an early pregnancy ultrasound, most likely a transvaginal ultrasound transducer will be used. This type of transducer is inserted into the vagina approximately 1 - 2 inches without a full bladder and gives the best access to an early pregnancy.

If you are having an ultrasound for pregnancy after 9 weeks gestation, than a curvilinear transducer maybe used with a frequency of 3.5 - 5 megahertz.

Ultrasound transducers will be used according to the study and how deep the tissue is that is being visualized. Most of them are adjustable during the scan but are limited within the device themselves. In other words, one transducer may have a range of 3.5 to 5.0 megahertz but it is not often that a transducer will have a range of 2.0 to 10 megahertz.

Diagnostic ultrasound machines must have transducers in order to see an image. An image cannot be obtained without gel on the skin. The gel works as a coupling to help with image visualization. It is always water based and will not stain your clothing.

The transvaginal probe is used with a condom or probe cover and gel is also applied to the tip of the probe both inside the cover and outside prior to being inserted. Again without the gel, the image will not be obtained.

It is not up to you to worry about what kind of ultrasound machine is used or the transducer used for your exam, the ultrasound tech will know exactly what to do and how to use it effectively.

Make sure that when you are going to have an ultrasound study that you listen carefully and adhere to any preparation instructions that are given to you.

It is important that you are prepared for the test you are having or your test maybe rescheduled. There is a reason for any kind of prep that they tell you to do even though you may think that you don't need it, leave it to the professionals to know what is best for you ultrasound exam.

For example:

Imaging of the gallbladder is done through an abdominal ultrasound; the gallbladder itself shrinks when you eat or drink and therefore cannot be seen by ultrasound. It is therefore recommended that you stay NPO for 12 hours prior to your exam, which means nothing to eat or drink for 12 hours before your ultrasound.

Other preps maybe to fill your bladder prior to having a pelvic ultrasound. This is up to the clinic performing the test. Some of them still have patients drink lots of water and of course hold it while others that feel that filling the bladder does not enhance the visibility and so it is not necessary.




This article was brought to you by Michelle Reynolds. She brings information and solutions for those who are having ultrasounds. Find out more about Ultrasound Transducers or just visit her web site at www.ultrasoundtransducers.org





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2012年7月1日 星期日

Many Uses For Ultrasound Machines


Whenever one hears the word: ultrasound, what usually comes up is a newly-pregnant couple proudly showing their family and friends a photo or even a video of their unborn. But there are a surprising number of other uses for ultrasound technology and machines, because it is one of the most non-invasive ways to examine and diagnose. By scanning the pregnant woman's uterus, the doctor can tell the sex as well as check the position of the unborn baby, but the doctor can now also check the internal organs, the eyes, the brain for irregularities as well as the placenta and since the early 90s, doctors can also use ultrasound to screen for chromosomal abnormalities, accurately predicting a Down's syndrome fetus.

In gynecology, the machines are used to diagnose solid or cystic masses in the pelvic area, using probes developed for this specific purpose. Custom probes are also used to examine males for prostate and colon problems.

Ultrasound machines are also used to examine a patient's thyroid, gall bladder, spleen, breasts and other organs. They can be used to locate a foreign object in the eye and are being used in fine needle biopsy procedures since a doctor can see the moving image of the needle penetrating tissue.

In the animal world, the Department of Animal & Dairy Science at Mississippi State University has pioneered the use of ultrasound in the examination of bovine carcasses, which has "revolutionized our basic understanding of the biology in cattle," leading to better more efficient management of beef production. But it doesn't stop there. Most veterinarians use ultrasound machines to probe cats, dogs, sheep, goats, horses and cows to make quick diagnoses.

Ultrasound machines are also used by physical therapists for penetrating tight and spasmodic muscles with relaxing deep tissue heat and to treat fibromyalgia, arthritis and other musculoskeletal injuries. The ultrasound process causes vasodilatation increasing circulation to the area, promoting healing.

Now miniaturized, portable ultrasound devices can be purchased for as little as $9,000 and some internists are carrying these devices to make on-the-spot diagnoses ever more accurate. This practice should become more common as the price of these hand-carried ultrasound (HCU) devices keeps coming down. Not quite the same as the devices used in the original Star Trek series by Dr. "Bones" McCoy, but it's a start!




Raymond helps others to understand more about ultrasound machine by writing articles related to the application of ultrasound machines, 3D & 4D fetal ultrasound Scan, breast ultrasound scan and etc.





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2012年6月28日 星期四

Ultrasound Machines - What's This For?


Most medical conditions and diseases are much less likely to be fatal than in decades past, thanks to advances in medial science. Medical diagnostics allow most disorders to be caught earlier, thus allowing treatment to begin more quickly and accurately. The popularity of ultrasound machines, which use high frequency sound waves to detect problems in patients' internal organs, has made rapid accurate diagnosis much easier.

Ultrasound machines have been especially helpful in diagnosing cardiac diseases. We know the criticality of heart in a healthy human body. In their initial stage, heart diseases can be cured through medicine and surgery. However, without a proper diagnostic tool, it was very difficult to ascertain a heart ailment earlier. Medical imaging of heart has drastically reduced the number of patients dying due to heart ailments.

Let us take a look at some of the workings of ultrasound machines. All machines have what is known as a transducer probe, which both emits and receives the ultrasound waves. Pulse controls are used to control the different wave properties of frequency, duration, and amplitude. Other components of the machines include a CPU, a mouse, a display, and a printer.

Ultrasound works by sending ultrasonic waves into the part of the body being examined. When interrupted by abnormal tissue such as tumors or the boundaries between tissues, the ultrasonic waves are reflected or echoed. The ultrasound machine calculates the distances traveled by those reflected waves to generate 2D images that display the distances and intensities of those echoes.

Internal organs can be sound through the aid of an ultrasound machine. A radiologist can use the machine's controls to view a specific section of any organ. Ultrasound scans are perfectly safe and have no side effects. Medical personnel can even use mobile machines in an emergency.

However, ultrasound imaging is still a medical procedure, and as such, should only be administered by a medical professional trained in radiology. A novice would not be able to properly interpret the results. Also, long term exposure to ultrasound waves has negative physical side effects, and an expert is necessary to regulate the equipment to avoid long term problems.




Ultrasound machines have given medical imaging diagnostics quite a boost since they have gained popularity. The ultrasound uses high frequency sound waves to make visuals of internal organs and tissues. Since cardiac health is a top priority in maintaining overall health, the use of ultrasound has given doctors the jump on once-fatal conditions. Before ultrasound, it was virtually impossible to catch heart ailments before they progressed into more advanced, less curable stages. Since the advent of ultrasound, the number of patients who die of heart problems has decreased substantially. Ultrasound imaging is a medical procedure and therefore only a doctor trained in radiology should perform it.





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2012年6月9日 星期六

Ultrasound Tranducers for Use With Ultrasound Machines


When imaging the body with ultrasound, ultrasound transducers are a key component of the imaging process. Without a transducer, the image cannot be obtained.

There are many types of ultrasound transducers and they vary in size and shape and depending on what part of the body that is being imaged will dictate what type of transducer will be used.

If you are having an abdominal ultrasound, most likely a curvilinear transducer will be used with a frequency of anywhere from 2.0 megahertz to 7.5 megahertz.

If you are having an ultrasound of your thyroid, most likely the transducer will have a frequency of 10 megahertz because the thyroid is not a deep structure and therefore will need a high frequency transducer.

If you are having an early pregnancy ultrasound, most likely a transvaginal ultrasound transducer will be used. This type of transducer is inserted into the vagina approximately 1 - 2 inches without a full bladder and gives the best access to an early pregnancy.

If you are having an ultrasound for pregnancy after 9 weeks gestation, than a curvilinear transducer maybe used with a frequency of 3.5 - 5 megahertz.

Ultrasound transducers will be used according to the study and how deep the tissue is that is being visualized. Most of them are adjustable during the scan but are limited within the device themselves. In other words, one transducer may have a range of 3.5 to 5.0 megahertz but it is not often that a transducer will have a range of 2.0 to 10 megahertz.

Diagnostic ultrasound machines must have transducers in order to see an image. An image cannot be obtained without gel on the skin. The gel works as a coupling to help with image visualization. It is always water based and will not stain your clothing.

The transvaginal probe is used with a condom or probe cover and gel is also applied to the tip of the probe both inside the cover and outside prior to being inserted. Again without the gel, the image will not be obtained.

It is not up to you to worry about what kind of ultrasound machine is used or the transducer used for your exam, the ultrasound tech will know exactly what to do and how to use it effectively.

Make sure that when you are going to have an ultrasound study that you listen carefully and adhere to any preparation instructions that are given to you.

It is important that you are prepared for the test you are having or your test maybe rescheduled. There is a reason for any kind of prep that they tell you to do even though you may think that you don't need it, leave it to the professionals to know what is best for you ultrasound exam.

For example:

Imaging of the gallbladder is done through an abdominal ultrasound; the gallbladder itself shrinks when you eat or drink and therefore cannot be seen by ultrasound. It is therefore recommended that you stay NPO for 12 hours prior to your exam, which means nothing to eat or drink for 12 hours before your ultrasound.

Other preps maybe to fill your bladder prior to having a pelvic ultrasound. This is up to the clinic performing the test. Some of them still have patients drink lots of water and of course hold it while others that feel that filling the bladder does not enhance the visibility and so it is not necessary.




This article was brought to you by Michelle Reynolds. She brings information and solutions for those who are having ultrasounds. Find out more about Ultrasound Transducers or just visit her web site at www.ultrasoundtransducers.org





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2012年6月8日 星期五

Using Ultrasound Therapy Machines to Reduce Joint and Muscle Pain


Ultrasound therapy machines are used by trainers, chiropractors, and therapists for treating joint pain, arthritis pain, and muscle pain. Many people believe that this type of therapy alleviates their pain and also helps in their healing process.

In the ultrasound therapy, very high frequency sound waves generated by the ultrasound machines are allowed to deeply penetrate the skin of your painful or injured area. In this procedure, a probe or wand with a rounded head, which is further attached to a home ultrasound machine, is used by holding it in hand. A gel is rubbed on the skin and the probe head is then gently moved on the affected body area by making small circular motions.

The ultrasonic (high frequency) waves are generated by the vibration on the head of the hand held probe. These waves then travel all through the skin causing tissue vibration in the affected areas of the body. This vibration of tissues heats them up, resulting in many beneficial effects on the injury. This is so because now the heated area draws more blood as a result of which large amounts of nutrients are delivered to the affected area. The main aim here is to somehow increase the flow of blood so that large amounts of nutrients reach the affected cell tissues.

The dosage of therapeutic ultrasound can easily be varied by slightly altering the frequency of the ultrasound beam. All the necessary controls for achieving this are placed on the control panel of ultrasound machine. A much deeper penetration of waves is achieved when the frequency is lowered, successfully dealing with any deep tissue injury.

High frequency dosages are normally used for all those injuries which are much closer to surface of the skin. A normal therapy session lasts about 4 - 12 minutes depending upon the injury.

There are some areas which should be avoided during the usage of ultrasound therapy machines. You should never use ultrasound therapy machines near the brain, spine, face, lungs, liver, kidneys, testicles, or ovaries. Care should also be taken when ultrasound therapy machines are used on pregnant women or people taking coagulant medicines.

Ultrasound therapy is usually safe when it is administered by some trained person or therapeutic professional. This is due to the ability of the handheld probe to burn the surface tissues or even cartilage and bones if continuously, kept in place, on some area for a long duration.

Ultrasound therapy machines are now also available for fibromyalgia treatment and rehabilitation. As fibromyalgia involves a soft tissue inflammation, therefore a particular type of portable ultrasound machine is used in its treatment. It is essential to purchase quality ultrasound therapy machines, which are approved by FDA. They should also be covered with a minimum one year warranty.

Today you can also purchase ultrasound therapy machines for personal use at home. These models would cost you few hundred dollars. You should however consult your doctor before using such ultrasound therapy machines.




---------------------------------------------------------------------------------------------------------------------------

Christine Beggs is the founder and CEO of EZUltrasound.com, the leading provider of portable home ultrasound machines to relieve pain and speed healing. Over the past 2 years, Christine has strived to deliver affordable, therapeutic ultrasound machines to anyone who needs them. Working closely with doctors and physical therapists, Christine has first hand knowledge of ultrasound therapy, its benefits and applications, and has a passion for sharing this knowledge in her articles. She developed EZUltrasound.com to relay her continual dedication to improving the quality of people's lives through the use of therapeutic ultrasound. To find out more, please visit www.EZUltrasound.com.





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2012年5月31日 星期四

Ultrasound Machines & Ultrasound


Ultrasound machines used for diagnostic imaging or therapy emit ultra sound (high-frequency) waves that penetrate different types of tissue in the body. Diagnostic equipment produces images without using harmful radiation as with x-rays. Due to the fact that ultrasound machines do not produce any ionizing radiation it is very safe for human beings.

With their own easily obtainable ultrasound machines, doctors' offices and clinics are able to examine various organs in the body on-site without having to send patients to the hospital or expensive medical imaging centers. Compared to magnetic resonance imaging (MRI) and computed tomography (CT), ultrasonography is relatively inexpensive and the equipment is very portable. With today's healthcare environment ultrasound can be considered the most cost effective modern imaging modality.

What is Ultra Sound?

Ultra- is used to describe sound waves as in "ultrasound", that which exceeds a frequency that a human ear can detect. Normally a human ear can hear approximately 20 hertz to 20,000 hertz (1 hertz is one cycle per second). Ultra sound, used for diagnostic imaging or therapy, can be employed to analyze or treat medical conditions. It applies cyclical sound pressure pulsed at a frequency higher than the human ear can detect, or 20,000 hertz, hence the name ultrasound.

Components of an Ultrasound Exam

Sonographers & Ultrasound Technologists are trained operators of ultrasound machines Central Processing Unit (CPU) - The ultrasound machine's brain. The computer that contains the microprocessor, memory, amplifiers and power supplies for the microprocessor and transducer probe. The CPU sends electrical currents to the transducer, which in turn sends electrical pulses that bounce off of the target and return echoes. The CPU calculates the location of thousands of points of echo origins to produce an image for output such as a monitor, a printer, a network drive; or a disk. Transducer Pulse Controls - The transducer pulse controls can set and vary the frequency, amplitude and duration of the ultra sound pulses. Electrical currents are applied to the piezoelectric (PZ) crystals in the transducer/ probe^, as selected by the operator. Display - The display turns processed data from the CPU into an image. Sonogram images have typically been black-and-white, but newer ultrasound machines can produce color Doppler images.Keyboard/Cursor - Ultrasound machines have a keyboard and a cursor. The keyboard allows the operator to add notes and to take measurements of the image; the mouse enables the operator to interact with the ultrasound machines software.Disk Storage - The processed data and/or images can be stored. Storage can include hard disks, compact disks (CDs), digital video disks (DVDs), or a network drive. Most of the time, ultrasound machines store data with the patient's medical records.Ultrasound Printers - Most ultrasound machines have thermal or digital printers connected to them. Ultrasound images are in motion (real time), but a still/ frozen image can be captured at any point and sent to the printer for printing.

Ultrasound Uses

Ultra sound machines can be used on many objects, typically to penetrate them and evaluate the reflections that occur, or to supply concentrated energy. The ultra sound reflection signature can detail the internal structure of the medium. The most well known exam performed on ultrasound machines is the obstetric ultrasound exam (imaging of the fetus). While many people relate this applied science with obstetrics only, there are many other applications for ultrasound technology. Now a days ultrasound is performed in small offices and private clinics. Within the last decade many endocrinologists and otolaryngologists have turned to performing ultrasound exams in the comfort of their own offices.

Identifying and diagnosing many ailments using ultrasound imaging has steeply declined our death rate from a variety of diseases and conditions. Medical diagnosis, which is crucial in disease treatment, has been a chief cause in the overall improvement of healthcare outcomes. Ultrasound machines have given a huge boost to medical diagnosis. Ultrasound machines can visualize problems in patients' organs and other tissues by bouncing ultra sound waves off of them and using a computer to plot the many points received and portrays these plots into images on a monitor or print them onto thermal paper.

Diagnostics - Capture size, structure, and any pathological lesions; Scans routinely conducted are obstetric, cardiac, renal, hepatic (liver) and gallbladder. Other applications include musculo-skeletal (imaging of muscles, ligaments and tendons), endocrinology and otolaryngology (thyroid, salivary glands, and lymph nodes), ophthalmic ultrasound (eye) scans and other superficial structures such as breast and testicles. Ultrasound is also increasingly being used in trauma and first aid cases by (the likes of) EMT response teams. Because of the real time nature of ultrasound, it is often used to guide interventional procedures such as fine needle aspiration FNA or biopsy of masses for cytology or histology testing in the breast, thyroid, liver, kidney, lymph nodes. Vascular scans are possible with the use of Doppler to display blood flow. Doppler is also being used to evaluate the blood flow of organs and cancerous regions.

Therapeutic - pulverize kidney- and gall-stones; focused ultrasound surgery; acoustic targeted drug delivery; cataract treatment; stimulate tooth and bone growth; non-surgical treatment of varicose veins; liposuction and lipectomy; bacterial cell killing; and acoustophoresis (contactless separation, concentration, and manipulation of microparticles and biological cells). Again the real time nature of ultrasound assists in injecting medications into muscles and joints.
Industrial
Cleaning - teeth and medical / dental instruments
Humidifiers
Echo Location & Range Finding
Chemistry
Weaponry

How Ultrasound Machines Work

Ultrasound machines have what is known as a transducer/probe, which emits and receives the ultrasound waves. Pulse controls are used to control the different wave properties of frequency, duration, and amplitude. Other components of the machines include a CPU, a mouse or trackball, a display, and a printer.

Sound waves coming from the ultrasound machine's transducer reflect off the target to help determine the size, shape, and depth of the region of interest. During a typical ultrasound exam millions of pulses and echoes are sent and received from the probe each second. Ultrasound waves come from small vibrations or waves going through matter. Although ultra sound waves are sound waves, they are inaudible. This is because the frequency is too high for human beings to hear.

Ultrasound machines use ultra sound waves to image internal organs. These waves are emitted by the machine and bounce back when they collide with normal tissue or tumors. The reflections occur at boundaries between different tissue types. The machine times the reflections to calculate distances and generate images of the organs. The different shades in an ultrasound image are equivalent to the intensities of the reflectors.

Ultrasound machines provide the ability to view live images of our internal organs. By using the controls provided, a sonographer can view the exact section of an internal organ. (Portable machines are also available for emergency medical teams.)

How an ultrasound is done?

In an ultrasound scan, a real-time scanner forms a continuous range of images of a subject and places it on the monitor. A transducer is used to produce these waves. The recurring ultrasound beams scan the subject and then go back to the transducer after reflection. The data obtained from the different reflections recomposed in the form of a picture that is displayed on a screen.

Ultrasound imaging is a complex medical procedure that requires prior training. The potential health risks that generated high frequency waves can produce damaging the body tissue if exposure is too lengthy warrant this. As such, only professional doctors and registered diagnostic medical sonographers with experience in their field of expertise can correctly regulate the duration of an exam.

Is Ultrasound Safe?

Loudness is measured in decibles (dB) not frequency. The loudness at which medical ultra sound waves are applied is less than 120dB. Ultra sound frequency is an inaudible 20,000 hertz. Yes it's safe, except:


Excess of 120 dB may lead to hearing loss.
Excess of 155 dB may harm the human body due to heat.
Exposures above 180 dB may lead to death.

When applied by trained ultrasound technologists or sonographers, ultrasound machines are generally safe with no known risks to patients because ultra sound machines do not use mutagenic ionizing radiation. If applied at length or at higher than diagnostic power, there potentially could be three effects created by ultrasonic energy: These could be enhanced inflammation; heating of soft tissue from molecular friction; and/or production of microscopic bubbles in living tissues which creates distortion of the cell membrane. This though is not known to occur at diagnostic power levels used by modern diagnostic machines.

* ultra and high frequency are interchangeable

^ transducer and probe can be used interchangeably




Ultrasound machines by Biosound Esaote are well suited to diagnosing endocrinological and otolaryngological issues, and are offered exclusively in America by DrSmart.com, Smartsound Ultrasound.

Ultrasound machines use Ultra sound in a generally safe manner. What makes medical sonography safe is its high frequency and low loudness, lack of radiation, and skillful application by trained sonographers. When it comes to ultrasound, machines of this complexity are only to be used by trained ultrasound technicians or sonogram machine operators who are experts in medical ultrasound. Machines are very expensive and highly advanced.





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2012年5月29日 星期二

Home Ultrasound Therapy Machines For Fibromyalgia Treatment


Fibromyalgia is a never-ending, health circumstance that is best described by defining its symptoms. These include, but definitely are not limited to: all-over body pain in the muscles, ligaments and tendons; numerous sore-to-the-touch areas on the body, or tender points, where even the slightest strain causes immense pain and recurrent tiredness even after lengthy sleep. The indications of Fibromyalgia can vary according to the time of day, weather, stress and/or physical activity. There are no medical tests for Fibromyalgia. Doctors must first rule out all other conditions that could be causing these symptoms before diagnosing a patient with Fibromyalgia.

Experts theorize that people with Fibromyalgia never truly reach the profound restorative phase of sleep, and that is where the exhaustion comes from. Those with the condition can sleep for extensive periods of time and still wake up feeling tired. A couple of sleep disorders associated with Fibromyalgia are Restless-Leg Syndrome and Sleep Apnea.

Experts have also come up with a theory of why those with Fibromyalgia feel pain. They believe those with the condition have a lower limit to pain because of heightened feelings in the brain to pain stimuli. They also believe that those with the condition have repetitive nerve stimulus that causes the brain to change. The brain simply overreacts to pain signs.

The intense, chronic pain and sensitivity in muscles and ligaments experienced by Fibromyalgia sufferers can be debilitating and persistent. Although more common in females, Fibromyalgia can happen to anyone and occur at any time. The largest obstacle with Fibromyalgia is that there is no known cure, which means a lifetime of pain relieving drugs, such as NSAIDS (Non-Steroidal Anti-Inflammatory Drugs) or other specialized medications. Such prescriptions can be expensive and have unpleasant side effects.

Other treatment options for Fibromyalgia include, hot and cold packs, stretching, regular exercise and ultrasound therapy. Therapeutic ultrasound for the treatment of fibromyalgia can provide deep tissue stimulation and pain relief. Ultrasound physical therapy can be a very effective way to manage the pain of Fibromyalgia.

Ultrasonic waves penetrate the skin to cause vibrations in tendons and soft tissues, providing gentle deep tissue heating that decreases pain and inflammation to speed healing. Ultrasound therapy increases blood flow and oxygen to tendons as well as relaxes muscles and decreases swelling. Ultrasound can be used as a pain therapy system to control Fibromyalgia pain flare-ups and can now be used in the comfort of your very own home.

Home ultrasound machines are now available for ultrasound Fibromyalgia treatments and rehabilitation. Visits to a chiropractor or physical therapist office for ultrasound physical therapy can be expensive and inconvenient, but it is now possible to rehab Fibromyalgia, and many other chronic injuries, in the comfort of your own home.

Because Fibromyalgia involves soft tissue inflammation, a specific kind of home ultrasound machine is required for treatment. A home ultrasound physical therapy machine should emit 1Mhz ultrasound waves. It is also important to purchase an FDA approved ultrasound unit that is quality manufactured. Your portable therapeutic ultrasound device should also be covered with at least a 1 year warranty.

Because these home ultrasound machines utilize pulsed ultrasound waves, they are very safe for use by the general public. Pulse ultrasound also is just as effective as continuous wave ultrasound that is used by doctors, but in home treatments will just be more often. With a portable therapeutic ultrasound machine, you can treat your bursitis daily when it is most convenient for you.




Christine Beggs is the founder and CEO of EZUltrasound.com, the leading provider of portable home ultrasound machines to relieve pain and speed healing. Over the past 2 years, Christine has strived to deliver affordable, therapeutic ultrasound machines to anyone who needs them. Working closely with doctors and physical therapists, Christine has first hand knowledge of ultrasound therapy, its benefits and applications, and has a passion for sharing this knowledge in her articles. She developed EZUltrasound.com to relay her continual dedication to improving the quality of people's lives through the use of therapeutic ultrasound. To find out more, please visit www.EZUltrasound.com.





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2012年5月26日 星期六

Used Ultrasound Machines Fill a Great Need in Society


A young lady enters the local crisis pregnancy center. She is scared and confused,

not sure what her next step should be. A friend told her about this center, so she decided to come.

Frightened at what her future may hold, she is looking for answers, and help.

As she talks with the volunteer on staff, she begins to relax a bit.

She feels more comfortable, accepted and understood. The staff member then asks her

if she would like to see her baby inside her womb. Her heart leaps into her throat

as she asks, "How can I do that?" It is then revealed to her that a wonderful

donation to the center allows them to view the baby, and that gift is an used ultrasound machine.

The Function and Impact of an Used Ultrasound Machine

There are many used ultrasound machines available which have only been used

for a short time before being discarded for a newer more advanced model.

In reality, the earlier used models still work perfectly well and are available for purchase.

Many companies sell these used ultrasound machines to various places.

For example, there may be a clinic that is set up in a low-income community

which does not have the funds for the latest and best technology.

Used ultrasound machines can be purchased for much less than their new proteges.

Also, in other countries where people live in extreme poverty, there is no access

to technology such as this. Yet, mission doctors may come in with a used ultrasound

machine that allows medical help to be administered that never would have been

possible otherwise. Used ultrasound machines work just like the newer models,

yet the images on the screen may be a little grainy or fuzzy,

whereas the newer models are crystal clear.

Used Ultrasound Machines Can Make a Difference

Many companies refurbish used ultrasound machines which have been damaged somehow.

They may just be an older model in need of general restoration such as cleaning

and minor maintenance. The machine may have been damaged during transport and

received extensive mechanical work.

Regardless, the used ultrasound machine can be a welcome addition to any clinic

whose finances do not allow for the latest models. Many less fortunate in society

can benefit from these machines, which are sometimes given as donations in order

to enhance the lives of those who come through the doors of the clinic.

© Bernard Lopez - Used-Ultrasound-Machines.com




Bernard Lopez has worked as distributor in some companies in the ultrasound field as Medison ultrasound machines, GE ultrasound equipment and Philips Ultrasound. He contributes with his experience at his web site : Refurbished and used ultrasound machines.





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2012年5月16日 星期三

Ultrasound Machines & Ultrasound


Ultrasound machines used for diagnostic imaging or therapy emit ultra sound (high-frequency) waves that penetrate different types of tissue in the body. Diagnostic equipment produces images without using harmful radiation as with x-rays. Due to the fact that ultrasound machines do not produce any ionizing radiation it is very safe for human beings.

With their own easily obtainable ultrasound machines, doctors' offices and clinics are able to examine various organs in the body on-site without having to send patients to the hospital or expensive medical imaging centers. Compared to magnetic resonance imaging (MRI) and computed tomography (CT), ultrasonography is relatively inexpensive and the equipment is very portable. With today's healthcare environment ultrasound can be considered the most cost effective modern imaging modality.

What is Ultra Sound?

Ultra- is used to describe sound waves as in "ultrasound", that which exceeds a frequency that a human ear can detect. Normally a human ear can hear approximately 20 hertz to 20,000 hertz (1 hertz is one cycle per second). Ultra sound, used for diagnostic imaging or therapy, can be employed to analyze or treat medical conditions. It applies cyclical sound pressure pulsed at a frequency higher than the human ear can detect, or 20,000 hertz, hence the name ultrasound.

Components of an Ultrasound Exam

Sonographers & Ultrasound Technologists are trained operators of ultrasound machines Central Processing Unit (CPU) - The ultrasound machine's brain. The computer that contains the microprocessor, memory, amplifiers and power supplies for the microprocessor and transducer probe. The CPU sends electrical currents to the transducer, which in turn sends electrical pulses that bounce off of the target and return echoes. The CPU calculates the location of thousands of points of echo origins to produce an image for output such as a monitor, a printer, a network drive; or a disk. Transducer Pulse Controls - The transducer pulse controls can set and vary the frequency, amplitude and duration of the ultra sound pulses. Electrical currents are applied to the piezoelectric (PZ) crystals in the transducer/ probe^, as selected by the operator. Display - The display turns processed data from the CPU into an image. Sonogram images have typically been black-and-white, but newer ultrasound machines can produce color Doppler images.Keyboard/Cursor - Ultrasound machines have a keyboard and a cursor. The keyboard allows the operator to add notes and to take measurements of the image; the mouse enables the operator to interact with the ultrasound machines software.Disk Storage - The processed data and/or images can be stored. Storage can include hard disks, compact disks (CDs), digital video disks (DVDs), or a network drive. Most of the time, ultrasound machines store data with the patient's medical records.Ultrasound Printers - Most ultrasound machines have thermal or digital printers connected to them. Ultrasound images are in motion (real time), but a still/ frozen image can be captured at any point and sent to the printer for printing.

Ultrasound Uses

Ultra sound machines can be used on many objects, typically to penetrate them and evaluate the reflections that occur, or to supply concentrated energy. The ultra sound reflection signature can detail the internal structure of the medium. The most well known exam performed on ultrasound machines is the obstetric ultrasound exam (imaging of the fetus). While many people relate this applied science with obstetrics only, there are many other applications for ultrasound technology. Now a days ultrasound is performed in small offices and private clinics. Within the last decade many endocrinologists and otolaryngologists have turned to performing ultrasound exams in the comfort of their own offices.

Identifying and diagnosing many ailments using ultrasound imaging has steeply declined our death rate from a variety of diseases and conditions. Medical diagnosis, which is crucial in disease treatment, has been a chief cause in the overall improvement of healthcare outcomes. Ultrasound machines have given a huge boost to medical diagnosis. Ultrasound machines can visualize problems in patients' organs and other tissues by bouncing ultra sound waves off of them and using a computer to plot the many points received and portrays these plots into images on a monitor or print them onto thermal paper.

Diagnostics - Capture size, structure, and any pathological lesions; Scans routinely conducted are obstetric, cardiac, renal, hepatic (liver) and gallbladder. Other applications include musculo-skeletal (imaging of muscles, ligaments and tendons), endocrinology and otolaryngology (thyroid, salivary glands, and lymph nodes), ophthalmic ultrasound (eye) scans and other superficial structures such as breast and testicles. Ultrasound is also increasingly being used in trauma and first aid cases by (the likes of) EMT response teams. Because of the real time nature of ultrasound, it is often used to guide interventional procedures such as fine needle aspiration FNA or biopsy of masses for cytology or histology testing in the breast, thyroid, liver, kidney, lymph nodes. Vascular scans are possible with the use of Doppler to display blood flow. Doppler is also being used to evaluate the blood flow of organs and cancerous regions.

Therapeutic - pulverize kidney- and gall-stones; focused ultrasound surgery; acoustic targeted drug delivery; cataract treatment; stimulate tooth and bone growth; non-surgical treatment of varicose veins; liposuction and lipectomy; bacterial cell killing; and acoustophoresis (contactless separation, concentration, and manipulation of microparticles and biological cells). Again the real time nature of ultrasound assists in injecting medications into muscles and joints.
Industrial
Cleaning - teeth and medical / dental instruments
Humidifiers
Echo Location & Range Finding
Chemistry
Weaponry

How Ultrasound Machines Work

Ultrasound machines have what is known as a transducer/probe, which emits and receives the ultrasound waves. Pulse controls are used to control the different wave properties of frequency, duration, and amplitude. Other components of the machines include a CPU, a mouse or trackball, a display, and a printer.

Sound waves coming from the ultrasound machine's transducer reflect off the target to help determine the size, shape, and depth of the region of interest. During a typical ultrasound exam millions of pulses and echoes are sent and received from the probe each second. Ultrasound waves come from small vibrations or waves going through matter. Although ultra sound waves are sound waves, they are inaudible. This is because the frequency is too high for human beings to hear.

Ultrasound machines use ultra sound waves to image internal organs. These waves are emitted by the machine and bounce back when they collide with normal tissue or tumors. The reflections occur at boundaries between different tissue types. The machine times the reflections to calculate distances and generate images of the organs. The different shades in an ultrasound image are equivalent to the intensities of the reflectors.

Ultrasound machines provide the ability to view live images of our internal organs. By using the controls provided, a sonographer can view the exact section of an internal organ. (Portable machines are also available for emergency medical teams.)

How an ultrasound is done?

In an ultrasound scan, a real-time scanner forms a continuous range of images of a subject and places it on the monitor. A transducer is used to produce these waves. The recurring ultrasound beams scan the subject and then go back to the transducer after reflection. The data obtained from the different reflections recomposed in the form of a picture that is displayed on a screen.

Ultrasound imaging is a complex medical procedure that requires prior training. The potential health risks that generated high frequency waves can produce damaging the body tissue if exposure is too lengthy warrant this. As such, only professional doctors and registered diagnostic medical sonographers with experience in their field of expertise can correctly regulate the duration of an exam.

Is Ultrasound Safe?

Loudness is measured in decibles (dB) not frequency. The loudness at which medical ultra sound waves are applied is less than 120dB. Ultra sound frequency is an inaudible 20,000 hertz. Yes it's safe, except:


Excess of 120 dB may lead to hearing loss.
Excess of 155 dB may harm the human body due to heat.
Exposures above 180 dB may lead to death.

When applied by trained ultrasound technologists or sonographers, ultrasound machines are generally safe with no known risks to patients because ultra sound machines do not use mutagenic ionizing radiation. If applied at length or at higher than diagnostic power, there potentially could be three effects created by ultrasonic energy: These could be enhanced inflammation; heating of soft tissue from molecular friction; and/or production of microscopic bubbles in living tissues which creates distortion of the cell membrane. This though is not known to occur at diagnostic power levels used by modern diagnostic machines.

* ultra and high frequency are interchangeable

^ transducer and probe can be used interchangeably




Ultrasound machines by Biosound Esaote are well suited to diagnosing endocrinological and otolaryngological issues, and are offered exclusively in America by DrSmart.com, Smartsound Ultrasound.

Ultrasound machines use Ultra sound in a generally safe manner. What makes medical sonography safe is its high frequency and low loudness, lack of radiation, and skillful application by trained sonographers. When it comes to ultrasound, machines of this complexity are only to be used by trained ultrasound technicians or sonogram machine operators who are experts in medical ultrasound. Machines are very expensive and highly advanced.





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2012年5月15日 星期二

Home Ultrasound Therapy Machines For Fibromyalgia Treatment


Fibromyalgia is a never-ending, health circumstance that is best described by defining its symptoms. These include, but definitely are not limited to: all-over body pain in the muscles, ligaments and tendons; numerous sore-to-the-touch areas on the body, or tender points, where even the slightest strain causes immense pain and recurrent tiredness even after lengthy sleep. The indications of Fibromyalgia can vary according to the time of day, weather, stress and/or physical activity. There are no medical tests for Fibromyalgia. Doctors must first rule out all other conditions that could be causing these symptoms before diagnosing a patient with Fibromyalgia.

Experts theorize that people with Fibromyalgia never truly reach the profound restorative phase of sleep, and that is where the exhaustion comes from. Those with the condition can sleep for extensive periods of time and still wake up feeling tired. A couple of sleep disorders associated with Fibromyalgia are Restless-Leg Syndrome and Sleep Apnea.

Experts have also come up with a theory of why those with Fibromyalgia feel pain. They believe those with the condition have a lower limit to pain because of heightened feelings in the brain to pain stimuli. They also believe that those with the condition have repetitive nerve stimulus that causes the brain to change. The brain simply overreacts to pain signs.

The intense, chronic pain and sensitivity in muscles and ligaments experienced by Fibromyalgia sufferers can be debilitating and persistent. Although more common in females, Fibromyalgia can happen to anyone and occur at any time. The largest obstacle with Fibromyalgia is that there is no known cure, which means a lifetime of pain relieving drugs, such as NSAIDS (Non-Steroidal Anti-Inflammatory Drugs) or other specialized medications. Such prescriptions can be expensive and have unpleasant side effects.

Other treatment options for Fibromyalgia include, hot and cold packs, stretching, regular exercise and ultrasound therapy. Therapeutic ultrasound for the treatment of fibromyalgia can provide deep tissue stimulation and pain relief. Ultrasound physical therapy can be a very effective way to manage the pain of Fibromyalgia.

Ultrasonic waves penetrate the skin to cause vibrations in tendons and soft tissues, providing gentle deep tissue heating that decreases pain and inflammation to speed healing. Ultrasound therapy increases blood flow and oxygen to tendons as well as relaxes muscles and decreases swelling. Ultrasound can be used as a pain therapy system to control Fibromyalgia pain flare-ups and can now be used in the comfort of your very own home.

Home ultrasound machines are now available for ultrasound Fibromyalgia treatments and rehabilitation. Visits to a chiropractor or physical therapist office for ultrasound physical therapy can be expensive and inconvenient, but it is now possible to rehab Fibromyalgia, and many other chronic injuries, in the comfort of your own home.

Because Fibromyalgia involves soft tissue inflammation, a specific kind of home ultrasound machine is required for treatment. A home ultrasound physical therapy machine should emit 1Mhz ultrasound waves. It is also important to purchase an FDA approved ultrasound unit that is quality manufactured. Your portable therapeutic ultrasound device should also be covered with at least a 1 year warranty.

Because these home ultrasound machines utilize pulsed ultrasound waves, they are very safe for use by the general public. Pulse ultrasound also is just as effective as continuous wave ultrasound that is used by doctors, but in home treatments will just be more often. With a portable therapeutic ultrasound machine, you can treat your bursitis daily when it is most convenient for you.




Christine Beggs is the founder and CEO of EZUltrasound.com, the leading provider of portable home ultrasound machines to relieve pain and speed healing. Over the past 2 years, Christine has strived to deliver affordable, therapeutic ultrasound machines to anyone who needs them. Working closely with doctors and physical therapists, Christine has first hand knowledge of ultrasound therapy, its benefits and applications, and has a passion for sharing this knowledge in her articles. She developed EZUltrasound.com to relay her continual dedication to improving the quality of people's lives through the use of therapeutic ultrasound. To find out more, please visit www.EZUltrasound.com.





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2012年5月13日 星期日

Using Ultrasound Therapy Machines to Reduce Joint and Muscle Pain


Ultrasound therapy machines are used by trainers, chiropractors, and therapists for treating joint pain, arthritis pain, and muscle pain. Many people believe that this type of therapy alleviates their pain and also helps in their healing process.

In the ultrasound therapy, very high frequency sound waves generated by the ultrasound machines are allowed to deeply penetrate the skin of your painful or injured area. In this procedure, a probe or wand with a rounded head, which is further attached to a home ultrasound machine, is used by holding it in hand. A gel is rubbed on the skin and the probe head is then gently moved on the affected body area by making small circular motions.

The ultrasonic (high frequency) waves are generated by the vibration on the head of the hand held probe. These waves then travel all through the skin causing tissue vibration in the affected areas of the body. This vibration of tissues heats them up, resulting in many beneficial effects on the injury. This is so because now the heated area draws more blood as a result of which large amounts of nutrients are delivered to the affected area. The main aim here is to somehow increase the flow of blood so that large amounts of nutrients reach the affected cell tissues.

The dosage of therapeutic ultrasound can easily be varied by slightly altering the frequency of the ultrasound beam. All the necessary controls for achieving this are placed on the control panel of ultrasound machine. A much deeper penetration of waves is achieved when the frequency is lowered, successfully dealing with any deep tissue injury.

High frequency dosages are normally used for all those injuries which are much closer to surface of the skin. A normal therapy session lasts about 4 - 12 minutes depending upon the injury.

There are some areas which should be avoided during the usage of ultrasound therapy machines. You should never use ultrasound therapy machines near the brain, spine, face, lungs, liver, kidneys, testicles, or ovaries. Care should also be taken when ultrasound therapy machines are used on pregnant women or people taking coagulant medicines.

Ultrasound therapy is usually safe when it is administered by some trained person or therapeutic professional. This is due to the ability of the handheld probe to burn the surface tissues or even cartilage and bones if continuously, kept in place, on some area for a long duration.

Ultrasound therapy machines are now also available for fibromyalgia treatment and rehabilitation. As fibromyalgia involves a soft tissue inflammation, therefore a particular type of portable ultrasound machine is used in its treatment. It is essential to purchase quality ultrasound therapy machines, which are approved by FDA. They should also be covered with a minimum one year warranty.

Today you can also purchase ultrasound therapy machines for personal use at home. These models would cost you few hundred dollars. You should however consult your doctor before using such ultrasound therapy machines.




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Christine Beggs is the founder and CEO of EZUltrasound.com, the leading provider of portable home ultrasound machines to relieve pain and speed healing. Over the past 2 years, Christine has strived to deliver affordable, therapeutic ultrasound machines to anyone who needs them. Working closely with doctors and physical therapists, Christine has first hand knowledge of ultrasound therapy, its benefits and applications, and has a passion for sharing this knowledge in her articles. She developed EZUltrasound.com to relay her continual dedication to improving the quality of people's lives through the use of therapeutic ultrasound. To find out more, please visit www.EZUltrasound.com.





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2012年5月8日 星期二

Ultrasound Tranducers for Use With Ultrasound Machines


When imaging the body with ultrasound, ultrasound transducers are a key component of the imaging process. Without a transducer, the image cannot be obtained.

There are many types of ultrasound transducers and they vary in size and shape and depending on what part of the body that is being imaged will dictate what type of transducer will be used.

If you are having an abdominal ultrasound, most likely a curvilinear transducer will be used with a frequency of anywhere from 2.0 megahertz to 7.5 megahertz.

If you are having an ultrasound of your thyroid, most likely the transducer will have a frequency of 10 megahertz because the thyroid is not a deep structure and therefore will need a high frequency transducer.

If you are having an early pregnancy ultrasound, most likely a transvaginal ultrasound transducer will be used. This type of transducer is inserted into the vagina approximately 1 - 2 inches without a full bladder and gives the best access to an early pregnancy.

If you are having an ultrasound for pregnancy after 9 weeks gestation, than a curvilinear transducer maybe used with a frequency of 3.5 - 5 megahertz.

Ultrasound transducers will be used according to the study and how deep the tissue is that is being visualized. Most of them are adjustable during the scan but are limited within the device themselves. In other words, one transducer may have a range of 3.5 to 5.0 megahertz but it is not often that a transducer will have a range of 2.0 to 10 megahertz.

Diagnostic ultrasound machines must have transducers in order to see an image. An image cannot be obtained without gel on the skin. The gel works as a coupling to help with image visualization. It is always water based and will not stain your clothing.

The transvaginal probe is used with a condom or probe cover and gel is also applied to the tip of the probe both inside the cover and outside prior to being inserted. Again without the gel, the image will not be obtained.

It is not up to you to worry about what kind of ultrasound machine is used or the transducer used for your exam, the ultrasound tech will know exactly what to do and how to use it effectively.

Make sure that when you are going to have an ultrasound study that you listen carefully and adhere to any preparation instructions that are given to you.

It is important that you are prepared for the test you are having or your test maybe rescheduled. There is a reason for any kind of prep that they tell you to do even though you may think that you don't need it, leave it to the professionals to know what is best for you ultrasound exam.

For example:

Imaging of the gallbladder is done through an abdominal ultrasound; the gallbladder itself shrinks when you eat or drink and therefore cannot be seen by ultrasound. It is therefore recommended that you stay NPO for 12 hours prior to your exam, which means nothing to eat or drink for 12 hours before your ultrasound.

Other preps maybe to fill your bladder prior to having a pelvic ultrasound. This is up to the clinic performing the test. Some of them still have patients drink lots of water and of course hold it while others that feel that filling the bladder does not enhance the visibility and so it is not necessary.




This article was brought to you by Michelle Reynolds. She brings information and solutions for those who are having ultrasounds. Find out more about Ultrasound Transducers or just visit her web site at www.ultrasoundtransducers.org





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2012年5月2日 星期三

Used Ultrasound Machines Fill a Great Need in Society


A young lady enters the local crisis pregnancy center. She is scared and confused,

not sure what her next step should be. A friend told her about this center, so she decided to come.

Frightened at what her future may hold, she is looking for answers, and help.

As she talks with the volunteer on staff, she begins to relax a bit.

She feels more comfortable, accepted and understood. The staff member then asks her

if she would like to see her baby inside her womb. Her heart leaps into her throat

as she asks, "How can I do that?" It is then revealed to her that a wonderful

donation to the center allows them to view the baby, and that gift is an used ultrasound machine.

The Function and Impact of an Used Ultrasound Machine

There are many used ultrasound machines available which have only been used

for a short time before being discarded for a newer more advanced model.

In reality, the earlier used models still work perfectly well and are available for purchase.

Many companies sell these used ultrasound machines to various places.

For example, there may be a clinic that is set up in a low-income community

which does not have the funds for the latest and best technology.

Used ultrasound machines can be purchased for much less than their new proteges.

Also, in other countries where people live in extreme poverty, there is no access

to technology such as this. Yet, mission doctors may come in with a used ultrasound

machine that allows medical help to be administered that never would have been

possible otherwise. Used ultrasound machines work just like the newer models,

yet the images on the screen may be a little grainy or fuzzy,

whereas the newer models are crystal clear.

Used Ultrasound Machines Can Make a Difference

Many companies refurbish used ultrasound machines which have been damaged somehow.

They may just be an older model in need of general restoration such as cleaning

and minor maintenance. The machine may have been damaged during transport and

received extensive mechanical work.

Regardless, the used ultrasound machine can be a welcome addition to any clinic

whose finances do not allow for the latest models. Many less fortunate in society

can benefit from these machines, which are sometimes given as donations in order

to enhance the lives of those who come through the doors of the clinic.

© Bernard Lopez - Used-Ultrasound-Machines.com




Bernard Lopez has worked as distributor in some companies in the ultrasound field as Medison ultrasound machines, GE ultrasound equipment and Philips Ultrasound. He contributes with his experience at his web site : Refurbished and used ultrasound machines.





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