Examination device for media by means of ultrasonic echography

摘要

Examination device for media by means of ultrasonic echography, comprising an array of n ultrasonic transducers associated with a stage for emitting exploration signals for the medium to be examined, and with a stage for receiving and processing the echographic signals returned to the said transducers by the obstacles encountered in the medium explored. The said emission stage comprises means for focusing m ultrasonic beams emitted simultaneously, in the form of n emission modules, themselves each comprising, for example the ith, m signal generators (201ai,..., 201mi) in parallel (or a single signal generator followed by m parallel delay circuits), a stage (202i) for combining the m signals thus generated, and an amplifier (203i), intended to supply the amplified combined signal to the transducer (10i) corresponding to the emission module in question. …??Application: echographs used in cardiology. …IMAGE…