The technology which offers the ultrasonic diagnostic device which complimentary coded sending and receiving can do to be disclosed, according to that technology output of mark corrugated occurrence section 3 to be supplied by the transmission section 2 which drives probe 1, according to the output of complimentary mark generator 4, output of reception amplifier 6 to be input by speed detection expedient 8, output of speed detection expedient 8 to be input by complimentary mark generator 4, correlator 7 to do the correlation operation of output of complimentary mark generator 4 and output of reception amplifier 6, memory 9 to remember the output of correlator 7, addition expedient 13Correlator it adds the output of 7 and memory 9.相補符号化送受信することのできる超音波診断装置を提供する技術が開示され、その技術によれば探触子1を駆動する送信部2には、相補符号発生器4の出力に応じて符号波形発生部3の出力が供給され、受信増幅部6の出力は速度検出手段8に入力され、速度検出手段8の出力は相補符号発生器4に入力され、相関器7は相補符号発生器4の出力と受信増幅部6の出力の相関演算を行い、メモリ9は相関器7の出力を記憶し、加算手段13は相関器7とメモリ9の出力の加算を行う。
