Life safety is more important than Mount Tai, ultrasound in the medical field what are the applications?

The wavelength of ultrasonic waves is shorter than the general sound waves, has better directionality, and can pass through the opaque material, this characteristic has been widely used in ultrasonic flaw detection, thickness measurement, ranging, remote control and ultrasonic imaging technology. Ultrasonic imaging is a technology that uses ultrasonic waves to present an image of the inside of an opaque object. The ultrasonic waves emitted from the transducer through the acoustic lens focused on the opaque specimen, the ultrasonic waves transmitted from the specimen carries the information of the illuminated part (e.g., the ability to reflect, absorb, and scatter the acoustic wave), through the acoustic lens convergence in the piezoelectric receiver, the resulting electrical signals are input to the amplifier, the use of scanning systems can be the image of the opaque specimen displayed on the fluorescent screen. The above device is called an ultrasound microscope. Ultrasound imaging technology has been widely used in medical examinations.