PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus to which ultrasonic probes are detachably attached and usable for transmitting received signals to a diagnostic apparatus body through optical signals and electric signals.SOLUTION: The ultrasonic diagnostic apparatus configured to detachably connect one end of a communication cable 3 to the diagnostic apparatus body 2 through a body side connector 4, includes electric-optic conversion means 8 converting received signals, processed by a plurality of A/D converters 7 respectively corresponding to a transducer array of the ultrasonic probe 1, into optical signals optical fibers 9 provided in the communication cable 3 to transmit the received signals converted into the optical signals by the electric-optic conversion means 8 and optic-electric conversion means 11 built in the body side connector 4 to convert the received signals, transmitted through the optical fibers 9, from optical signals into electric signals.COPYRIGHT: (C)2012,JPO&INPIT【課題】診断装置本体に対して光信号および電気信号により受信信号を伝送する超音波プローブをそれぞれ着脱して利用可能な超音波診断装置を提供する。【解決手段】通信ケーブル3の一端部は、本体側コネクタ4を介して診断装置本体2と着脱可能に接続され、超音波プローブ1の振動子アレイにそれぞれ対応した複数のA/Dコンバータ7で処理された受信信号を光信号に変換する電気-光変換手段8と、通信ケーブル3内に設けられ、電気-光変換手段8により光信号に変換された受信信号を伝送する光ファイバ9と、本体側コネクタ4に内蔵され、光ファイバ9で伝送された受信信号を光信号から電気信号に変換する光-電気変換手段11とを備えている。【選択図】図1