Ultrasonic echo signals are successively sampled and converted to digital echo data which are written into a first digital memory column by column and then read out row by row into a first buffer memory. The digital echo data which are derived in response to beams successively transmitted in a predetermined...http://www.google.fr/patents/US4423737?utm_source=gb-gplus-shareBrevet US4423737 - Combination tomographic and cardiographic ultrasonic imaging method and system
Combination tomographic and cardiographic ultrasonic imaging method and ...
