An ultrasonic reception signal from a subject being examined is detected by use of an ultrasonic image recording system. Of the ultrasonic images obtained by means of image processing, only image data required for display purposes is recorded in the system. Through the simultaneous superimposition of...http://www.google.fr/patents/US4865040?utm_source=gb-gplus-shareBrevet US4865040 - Ultrasonic image recording method and system
