This invention designates that the territory where it has the interest of penanbura and the like without another photographing device and needing photographing method at the time of the appraisal of flow, is depicted precisely as topic. For example as for the magnetic resonance image processing device which is connected to the magnetic resonance device which outputs the magnetic resonance picture, there is an interest 0 - 1000 [the expedient which collects the spread emphasis picture series which corresponds to expedient and each b value which b values which display the sensitivity of the spread which includes the range of s/mm2] plural are set from the magnetic resonance device and, by the signal processing the spread emphasis picture series which collected, the expedient which extracts the component picture of the penanbura territory and, it has.本発明は、灌流の評価に際して別な撮影装置や撮影方法を必要とすることなく、ペナンブラなどの関心のある領域を精密に描出することを課題とする。磁気共鳴画像を出力する磁気共鳴装置に接続される磁気共鳴画像処理装置は、0~1000[s/mm2]の範囲を含む拡散の感度をあらわすb値を複数個設定する手段と、各b値に対応した拡散強調画像系列を磁気共鳴装置から収集する手段と、収集した拡散強調画像系列を信号処理することにより、関心のある例えばペナンブラ領域の成分画像を抽出する手段と、を備えている。