PROBLEM TO BE SOLVED: To provide an ultrasonograph which displays appropriate waveforms without specifically being aware of an analysis mode when an ultrasonographer performs a blood-flow signal analysis and a tissue signal analysis.SOLUTION: The ultrasonograph, equipped with a means (45) for optimizing a velocity range and a base line position by determining aliasing of a velocity from signal information on a Doppler spectrum out of received signals in a cardiovascular diagnostic region, is equipped with the changing and adjusting means (45) to change and adjust at least one out of transmitting and receiving conditions, a gain allocation, Wall Filter setting, a scroll speed, and a range gate size.COPYRIGHT: (C)2007,JPO&INPIT【課題】血流信号解析と組織信号解析を行う場合、特にそれらの解析モードを意識せずに適切な波形表示ができる超音波診断装置を提供すること。【解決手段】循環器診断領域において、受信信号のうちドプラスペクトラムの信号情報を元に、速度の折りかえり現象を判断して速度レンジ及び基線位置を最適化する手段(45)を備えた超音波診断装置において、送受信条件と、ゲイン配分と、Wall Filter設定と、スクロールスピードと、レンジゲートサイズの少なくとも1つを変更調整するための変更調整手段(45)を備えた。【選択図】 図1
