What is ultrasound examination?

Ultrasound is high frequency (rapidly fluctuating) sound waves, which are above the limit of human hearing and is harmless to all tissues in the body. It uses an ultrasound head, which emits sound waves and simultaneously record the echoes that are being thrown back from the area, we want to investigate. Full same technique as fishermen use in a modern echo sounder for locating fish hours. In this way the founding of ultrasound images on the screen in various shades of gray, and in particular echo dense structures, for example.

The so-calledDoppler Technique, Which is designed to measure the delay with which ultrasound waves are returned in the flowing blood, so used to measure blood flow velocity. Doppler technique can be used for the study of diseases of the blood vessels, for example by a blood clot in the leg or arteriosclerosis.

When performed ultrasound examination?

Ultrasound is used mainly to study the stomach, for example. to locate a gallstone or investigation of the liver or kidneys. There is also used ultrasound to the study of head and neck area, for example. by disease in the thyroid gland or by hardening arteries of the neck pulse, and to examine the heart (see echocardiography). Ultrasound is also used to examine the pregnant belly (See special tests during pregnancy).

How is the ultrasound examination?

Ultrasound is a painless examination, which only takes place outside of the skin. There used an ultrasound head, which is held over the area you want to investigate. It uses a clear jelly, which lubricate the skin in order to facilitate the passage of ultrasound waves that pass through bad air. The study lasts about. 5-15 minutes, and you can sometimes get results of the investigation with the same result while other times to be compared with results from other studies, which will be called


This article is formed on the Health Guide on 31.07.06




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