release time:2022-02-17 15:30:40
Echocardiography is the use of ultrasound technology to perform imaging examinations. Ultrasound means high-frequency sound waves that cannot be heard by the human ear. The frequency of audible sound waves is within 20,000 kHz, and the frequency of diagnostic ultrasound is between 2 and 15 MHz.
Color ultrasound is a three- (four-) dimensional image that can detect the speed and direction of blood by Doppler ultrasound. It is mostly used to determine blood flow within the cardiovascular system. This is an irreplaceable function of color ultrasound compared to other imaging tests and has an indispensable role in the diagnosis of heart disease.
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