PROBLEM TO BE SOLVED: To minimize a rise in the temperature of an ultrasonic probe pertaining to the ultrasonic probe with a receiving circuit built in and to an ultrasonic diagnostic system with the ultrasonic probe.SOLUTION: The ultrasonic probe 3 comprises a group 27 of oscillators containing a plurality of oscillators which convert ultrasonic waves to electric reception signals, a plurality of LNAs 29 and a receiving circuit such as a sub array beam former 30 for carrying out a receiving processing of the reception signals, a sequence control part 31, and a bias control part 32. The sequence control part 31 and the bias control part 32 control the LNAs 29 and the sub array beam former 30 so as to stop their operations during a specified period of time.COPYRIGHT: (C)2009,JPO&INPIT【課題】超音波プローブの温度上昇を小さく抑える。【解決手段】超音波プローブ3は、超音波を電気的な受信信号に変換する振動子を複数含んだ振動子群27と、受信信号に対して受信処理を施す複数のLNA29およびサブアレービームフォーマ30などの受信回路と、シーケンス制御部31およびバイアス制御部32とを備える。シーケンス制御部31およびバイアス制御部32は、所定期間において動作を停止するようにLNA29およびサブアレービームフォーマ30を制御する。【選択図】 図1
