PROBLEM TO BE SOLVED: To provide a technique for removing a global phase change due to static magnetic field nonuniformity contained in a nuclear magnetic resonance signal.SOLUTION: Focusing on the fact that a phase component generated in a nuclear magnetic resonance signal due to the static magnetic field nonuniformity is in a predetermined frequency band (a low frequency band), a phase component of a frequency band due to the static magnetic field nonuniformity is removed from an image generated from a nuclear magnetic resonance signal of final imaging. A predetermined frequency band of a phase component due to the static magnetic field nonuniformity is obtained from a nuclear magnetic resonance signal obtained by preliminary imaging.COPYRIGHT: (C)2014,JPO&INPIT【課題】核磁気共鳴信号に含まれる、静磁場不均一に起因する大域的な位相変化を除去する技術を提供する。【解決手段】静磁場不均一に起因して核磁気共鳴信号に生じる位相成分が、所定の周波数帯域(低周波帯域)であることに着目し、静磁場不均一に起因する周波数帯域の位相成分を、本撮像の核磁気共鳴信号から生成した画像から除去する。静磁場不均一に起因する位相成分の所定の周波数帯域は、予備撮像により取得した核磁気共鳴信号から求める。【選択図】 図3
