PROBLEM TO BE SOLVED: To provide an MRI (Magnetic Resonance Imaging) apparatus which can detect movement of a site such as the diaphragm with high accuracy.SOLUTION: An MRI apparatus 100 comprises a setting part 26a and a control part 10. The setting part 26a sets a first application region to which an excitation pulse for detecting a respiratory time phase is applied and a second application region to which refocusing pulse is applied, in such a way that a volume of a region to which both of the excitation pulse and the refocusing pulse are applied becomes a prescribed volume value. A control part 10 executes first imaging to detect the respiratory time phase on the basis of first imaging data obtained from the region and second imaging to collect second imaging data within a range including an object on the basis of the respiratory time phase obtained by the first imaging while applying the excitation pulse and the refocusing pulse to the first application region and the second application region respectively.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】精度良く横隔膜などの部位の動きを検出することができるMRI装置を提供する。【解決手段】MRI装置100において、設定部26aは、呼吸時相を検出するための励起パルス及びリフォーカスパルスの双方が印加される領域の体積が所定の体積値となるように、前記励起パルスが印加される第1印加領域と、前記リフォーカスパルスが印加される第2印加領域とを設定する。制御部10は、前記励起パルス及び前記リフォーカスパルスそれぞれを前記第1印加領域及び前記第2印加領域に印加しながら、前記領域から得られた第1撮像データに基づいて呼吸時相を検出する第1撮像と、前記第1撮像により得られた呼吸時相に基づいて、対象を含む範囲の第2撮像データを収集する第2撮像とを実行する。【選択図】図1
