PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus having a function of generating an ultrasonic image in which effects of spontaneous echoes are reduced.SOLUTION: The ultrasonic diagnostic apparatus includes: an ultrasonic probe a transmission/receiving part for feeding driving signals to respective ultrasonic transducers and generating receiving signals based on echo signals a signal extraction part for extracting a harmonic signal and a fundamental signal from the receiving signals a calculation part for calculating a quantity of characteristics over a scanned region based on the value corresponding to the amplitude of the harmonic signal and the value corresponding to the amplitude of the fundamental signal a region determining part for determining a prescribed region in the scanned region based on the quantity of characteristics and a prescribed threshold a changing part for changing the value corresponding to the amplitude of the harmonic signal in the prescribed region and an image generation part for generating a corrected harmonic image based on the harmonic signal in the scanned region including the prescribed region with the changed value corresponding to the amplitude of the harmonic signal.COPYRIGHT: (C)2013,JPO&INPIT【課題】スポンティニュアスエコーによる影響を低減した超音波画像を発生する機能を有する超音波診断装置を提供する。【解決手段】超音波プローブと、駆動信号を超音波振動子各々に供給しエコー信号に基づいて受信信号を発生する送受信部と、受信信号から高調波信号と基本波信号とを抽出する信号抽出部と、高調波信号の振幅に対応する値と基本波信号の振幅に対応する値とに基づいて、特徴量を、被走査領域に亘って計算する計算部と、特徴量と所定の閾値とに基づいて被走査領域における所定領域を決定する領域決定部と、所定領域における高調波信号の振幅に対応する値を変更する変更部と、変更された高調波信号の振幅に対応する値を有する所定領域を含む被走査領域における高調波信号に基づいて、補正高調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
