Principles of ultrasound
The use of ultrasound for the detection of structures, their motion patterns and their distances from the observer is not only related to echography; it is older than mankind and well known from the world of animals. The dolphin and the bat, for example, use it for exploring their environment and finding directions.
KeywordsMitral Valve Left Atrium Prosthetic Valve Acoustical Impedance Lateral Resolution
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