PROBLEM TO BE SOLVED: To obtain a spin echo signal image of high quality, by always placing linear artifacts that are created in an image at its endmost portion in measuring spin echo signals, even when the artifacts are detected at positions deviated from the center of the magnetic field in the phase encode direction, so that bad effects can be removed.SOLUTION: This magnetic resonance imaging apparatus comprises a static magnetic field generation means for generating a static magnetic field, a transmission means for applying high-frequency magnetic waves to a subject lying in the static magnetic field, an inclined magnetic field generation means for giving a magnetic gradient to the static field, a receiving means for detecting nuclear magnetic resonance signals generated from the subject, a transmission means for transmitting the signals, a control means for controlling the transmission means, the inclined magnetic field generation means and the receiving means in accordance with spin echo pulse sequence, and an image processing means for processing images based upon the detected magnetic resonance signals. The control means is provided with an adjustment means for adjusting the phase of the high-frequency magnetic field and the measurement phase of the nuclear magnetic resonance signals, according to how much the center of the measured region is deviated from the center of the static magnetic field.COPYRIGHT: (C)2008,JPO&INPIT【課題】 スピンエコー信号計測時に、画像中に発生する線状アーチファクトを、位相エンコード方向に磁場中心からずれた位置で計測した場合にも、常に画像の最端部に配置することによって、悪影響を取り除き、高画質なスピンエコー信号画像を取得する。【解決手段】 静磁場を発生する静磁場発生手段、静磁場中に置かれた被検体に対して、高周波電磁波を印加する送信手段、静磁場に磁場勾配を与える傾斜磁場発生手段、被検体から発生する核磁気共鳴信号を計測する受信手段、これら送信手段、傾斜磁場発生手段および受信手段をスピンエコーパルスシーケンスに従い制御する制御手段、計測された磁気共鳴共信号に基づいて画像処理を行う画像処理手段を備え、制御手段は、静磁場の中心に対する計測領域中心のずれ量に応じて高周波磁場の位相および核磁気共鳴信号の計測位相を調整する手段を備える。【選択図】 図2
