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ultrasound medicine

18.01.2008

Physicists around the world believe that ultrasound will help cure many diseases.

In New Orleans (USA) November 26, 2007 a conference was held, which was dedicated to ultrasound medicine. From the reports presented there, it follows that the use of ultrasound in medicine has long been not limited to diagnostics. For example, an ultrasonic beam can be turned into a surgical instrument. To do this, you need to focus the sound wave, and all its energy will be concentrated in an area the size of a grain of rice. As a result, ultrasound begins to behave like a laser beam, that is, it heats the tissue.

At the same time, ultrasound works not only as a scalpel. For example, Vesna Zhderich of the University of George Washington claims that it can be used to stop internal bleeding: under the influence of heat, the blood coagulates, the tissue around the wound is destroyed and a blood clot occurs that closes the wound. So it is possible to stop bleeding in the liver, kidneys, deeply located blood vessels.

Scientists from the University of Michigan, led by Zhzhen Zu, went further. They propose to create a new type of ultrasonic scalpel, which, without any heating, will tear the tissue in the right place thanks to cavitation bubbles. Moreover, you can follow the movement of this scalpel inside the body, since the bubbles are perfectly visible using a tomograph or an ultrasound device.

The main advantage of an ultrasonic instrument is that a sound wave, unlike, say, a laser beam, can penetrate into any most hidden corner of the body.

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