Diagnostic Medical Sonography – which is more commonly referred to as an ultrasound – is a high-tech mechanism that produces moving imagery of the internal workings of the human body. This technology has significantly advanced doctor’s preventative and diagnostic abilities.

An ultrasound machine sends high frequency pulses of sound into the body using a hand-held, wand-like device. The scientific principle behind how sonography works is very similar to the way in which dolphins and whales – and submarines for that matter – are able to navigate underwater.

Sonography devices have evolved since their late 1950s inception in England while maintaining the same working principles. Many of the biggest developments that led to the modern ultrasound machine stemmed from radar and sonar research conducted during World War II.

The typical sonograph machine includes seven major components, including: a transducer probe that sends and receives signals; a central processing unit that computes all of the data; transducer pulse controls which change the amplitude, frequency and duration of sound pulses; a monitor where images are displayed; a keyboard and cursor for inputting data; a storage device such as a CD; and a printer to make hard copies of the data and imaging.

When the sound waves penetrate the body’s soft tissue and hit something internally – fluid, organs or bone, for example – some of the wave is refracted back toward the probe while the remainder continues forward until it runs into another boundary and reverberates back toward the surface.

The probe detects the reverberating waves and sends the data to the ultrasound machine which calculates the distance from the probe to the boundary and how long it took for the wave to bounce back to the surface. As the machine increases the rate of echoes, a two-dimensional picture is developed. In general, a diagnostic sonograph may issue millions of sound pulses and record millions of echoes in the course of just a few seconds. As the sonographer moves the probe around on the body, various angles can be produced in the picture.

This method won’t diagnose a yeast infection or the flu; however, it is a painless and totally safe way for doctors to measure the size of a fetus to determine the gestational stage of a pregnancy, how many fetuses are present and the sex of the baby. It may also be used to identify abnormalities in the heart, measure blood flow and detect various forms of cancer among a growing list of other applications. Unlike X-rays, ultrasounds do not employ radiation in order to generate diagnostic images.

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With the advent of modern technology, various kinds of techniques are evolving in every field including the field of medicine. Years back, it was a wonder to see an X-ray machine followed by E C G. Now the trend has changed and day by day on account of continuous research and development conducted throughout the world, new and sophisticated medical instruments are invented and marketed with a view to help the medical community.

While X-ray machines are useful in viewing the bone structure in the body, ultrasound technology which is superior to X-rays is used for viewing the muscles and other soft tissues, such as heart and vein tissue and fetuses in the womb. However, ultrasonography uses sound waves to generate the images for assessment and the ultrasound technology has a lot of applications in the diagnosis and treatment of medical conditions apart from working directly with patients.

Diagnostic medical sonography requires the ability to perform numerous procedures that result in diagnosing problems in patients. In order to get him qualified in the field of diagnostic medical sonography, the student should be well versed in understanding sonography and should be capable of handling the equipments meant for recording radiation, radio waves, magnetic resonance imaging or MRI and ultrasound.

The following are some of the latest technologies in the field of ultra sonography. which are gaining momentum:

Vascular Ultrasound: In order to view various kinds of problems connected with blood flow through the blood vessels, vascular ultrasound is utilized. When a blockage is found in the blood vessels, the use of vascular ultrasound technique is employed along with a technique called angioplasty and angioplasty helps in reopening the blocked blood vessel.

Obstetrics and Gynecological Sonography: This technology is used to monitor the fetal heart beat, birth defects, or an abdominal fetal heartbeat. The female pelvic area such as the fallopian tubes, uterus, ovaries, cervix and bladder are treated using gynecological sonography.

Echocardiography: Towards examining the heart, the function of its valves and flow of blood into the heart, echocardiography is used. There are a lot of improvements in the system at present and the physicians are able to view the pumping capacity, size, shape and irregularity with the opening and closing of the valves.

Abdominal sonography: In order to have a better view over the various organs situated in the abdomen region, the technology of abdominal sonography is used. Organs like, liver, pancreas, spleen, gall bladder and kidneys are situated in the abdominal region. Basing upon the Doppler technology, in order to evaluate the speed and thickness with which the blood flows through the vessels, Doppler sonography, a new technological invention is in use. By using the above, the blood vessels images and functioning can be accurately viewed without much difficulty.

Nowadays learning ultrasound technology through online studies has been made simpler and easier and this facility is available along with additional first hand laboratory requirements. Ultrasound has become an attractive alternative to radiologic procedures and more job opportunities are available for technicians skilled in ultrasound technology. A large number of hospitals require more such technicians apart from the requirements by physicians and medical and diagnostic laboratories.