HIGH RESOLUTION PULSE ECHO ULTRASONIC IMAGING DISPLAY SYSTEM

摘要

HIGH RESOLUTION PULSE-ECHO ULTRASONIC-IMAGING DISPLAY SYSTEM An acoustic focusing device occupying a fixed aperture is used to both illuminate internal structure of a visually opaque object with a scanning focused beam of ultrasonic energy and for returning a reflected signal portion of the scanning focused beam passed therethrough for detection. The use of such a fixed-aperture focusing device permits deep soft tissue of a living human being to be displayed with high resolution for medical diagnostic purposes in a manner compatible with a real time frame rate.