PROBLEM TO BE SOLVED: To emphasize a fluid which flows at a comparatively lower speed than a fluid which flows at a higher speed.SOLUTION: A collecting means including a sequencer 10 and parts and the like controlled by the sequencer 10 collects magnetic resonance signals which are generated in a photographing region before an administration of a contrast agent by making the magnetic resonance signals be dephased in such a manner that magnetic resonance signals for the fluid which flows in a first flow-rate range makes greater signal reducion than those for the fluid which flows in a second flow rate range of a lower flow rate. At the same time, the collecting means collects the magnetic resonance signals which are generated in the photographing region after the administration of the contrast agent in a manner to make the magnetic resonance signals have an intensity in response to the concentration of the contrast agent. An operation unit 11 respectively reconstructs base images and dynamic images indicating spacial distribution of the fluids in the photographing region on the basis of the magnetic resonance signals respectively collected by reflecting the intensity of the magnetic resonance signals, and forms images for diagnosis indicating the degree of the changs of the fluids after the administration of the contrast agent with respect to the fluid before the administration of the contrast agent based on those images.COPYRIGHT: (C)2011,JPO&INPIT【課題】 比較的低速に流動する流体を、より高速に流動する流体より強調する。【解決手段】 シーケンサ10とこれにより制御される各部等を含んだ収集手段は、造影剤投与前の撮像領域内で生じる磁気共鳴信号を、第1の流速範囲内で流れる流体に関する磁気共鳴信号をより低い第2の流速範囲で流れる流体に関する磁気共鳴信号よりも大きく信号低下させるようにディフェーズさせるように収集するとともに、造影剤投与後の撮像領域内で生じる磁気共鳴信号を、造影剤濃度に応じた大きさとするように収集する。演算ユニット11は、上記のそれぞれ収集された磁気共鳴信号に基づいて、流体の撮像領域における空間的分布を磁気共鳴信号の大きさを反映して表したベース画像およびダイナミック画像をそれぞれ再構成し、これらの画像に基づいて造影剤投与前に対する投与後の流体の変化の度合いを表した診断用画像を生成する。【選択図】 図1
