PROBLEM TO BE SOLVED: To provide an ultrasonic diagnosis apparatus that requires no complex circuit and inhibits a frame rate from reducing with increase in the number of frequencies, to improve both of a SNR and image quality.SOLUTION: An ultrasonic diagnosis apparatus performs, using a code string, phase modulation on each of a plurality of carrier waves having different frequencies multiplexes a plurality of modulation signals generated by the phase modulation makes an ultrasonic probe perform sounding drive, by using the multiplexed signal as a transmission signal acquires a reception signal based on a reflected ultrasonic wave received by the ultrasonic probe and performs processing of calculating a mutual correlation value between a reference signal generated by using a code string obtained by performing phase modulation on a carrier wave and some or all of frequency components of the reception signal, to generate a time-series signal.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】複雑な回路を必要とせず、フレームレートが周波数の数に依存して低下しないように、SNRと画質向上を両立した超音波画像を得る超音波診断装置を提供する。【解決手段】周波数の異なる複数の搬送波を、それぞれ符号列で位相変調し、位相変調により生成した複数の変調信号を多重化し、多重化した信号を送信信号として超音波探触子を発音駆動させ、超音波探触子が受信した反射超音波に基づく受信信号を取得し、搬送波に位相変調を施した符号列を用いて生成した参照信号と、受信信号の一部または全部の周波数成分との相互相関値を算出する処理を行い、時系列信号を生成する。【選択図】図1
