PROBLEM TO BE SOLVED: To set such delay time that image quality is prevented from being degraded as much as possible.SOLUTION: With a time point ts at which a blood flow becomes slowest as a reference, an imaging sequence IS is positioned on blood flow signals SB. Then, the delay time TDq for the blood flow signals from the blood flow peak q of the blood flow signals SB to the execution of the imaging sequence IS is calculated. After the delay time TDq for the blood flow signals is calculated, a time difference Δt between the blood flow peak q and a pulse wave peak p is calculated. Then, whether or not it is TDq>Δt is determined and the delay time TDp for pulse wave signals is calculated.COPYRIGHT: (C)2013,JPO&INPIT【課題】画質の劣化ができるだけ生じないような遅延時間を設定する。【解決手段】血流が最も遅くなる時点tsを基準にして、血流信号SB上に、イメージングシーケンスISを位置決めする。次に、血流信号SBの血流ピークqからイメージングシーケンスISが実行されるまでの血流信号用の遅延時間TDqを算出する。血流信号用の遅延時間TDqを算出した後、血流ピークqと脈波ピークpとの時間差Δtを算出する。そして、TDq>Δtであるか否かを判断し、脈波信号用の遅延時間TDpを算出する。【選択図】図10