PROBLEM TO BE SOLVED: To distinguish a harmonic signal which originates in a contrast medium from a harmonic signal which originates in a living body.SOLUTION: The ultrasonograph relating to the embodiment includes: an ultrasonic probe a transmitting part which transmits a first ultrasound and at least one of a second ultrasound in which the first ultrasound is amplitude-modulated in a prescribed ratio to a subject into which a contrast medium is injected through the ultrasonic probe a received signal generating section which generates a first received signal based on a reflected wave of the first ultrasound and generates a second received signal based on a reflected wave of the second ultrasound a harmonic signal extraction section which extracts a harmonic signal contained in the first and second received signals a harmonic component extraction section which extracts a harmonic signal component originated in the contrast medium from a harmonic signal based on the first and second received signals and an image generating section which generates an ultrasonic image based on an extracted harmonic component.COPYRIGHT: (C)2012,JPO&INPIT【課題】造影剤に起因する高調波信号と生体に起因する高調波信号とを区別すること。【解決手段】本実施形態に係る超音波診断装置は、超音波プローブと、超音波プローブを介して、造影剤を注入された被検体へ向けて第1超音波と第1超音波を所定の比率にて振幅変調させた少なくとも1種類の第2超音波とを送信する送信部と、第1超音波の反射波に基づいて第1受信信号を発生し、第2超音波の反射波に基づいて第2受信信号を発生する受信信号発生部と、第1、第2受信信号に含まれる高調波信号を抽出する高調波信号抽出部と、第1または第2受信信号を用いて、高調波信号から、造影剤に由来する高調波成分を抽出する高調波成分抽出部と、抽出された高調波成分に基づいて超音波画像を発生する画像発生部と、を具備することを特徴とする。【選択図】図1
