lies in the fact that the source of ultrasound (sound waves with a frequency of 20 kHz is not perceived by the human ear) is sending a wave into the tissues and organs. One type of tissue absorbs the wave, others reflect it, and others passed virtually unchanged. The reflected ultrasonic signal is returned and the perceived motion sensor device. The received signal undergoes computer processing and is reproduced on the screen.
particularly informative in the study of ultrasonography of the gallbladder, liver, pancreas, heart, kidney, spleen, uteass, prostate and thyroid cancer. Ultrasound of the genitourinary system, you must comply with bladder filling. With the development of ultrasound appearance of such devices, which allow not only determine the state authorities, but also to evaluate blood flow, by which one can judge with high confidence the presence of pathology or its absence.
www.laparoscopy.com Source: Journal of Quality of Life. Prevention. "№ 5 May 2005 www.profilaktika . as