PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus which is highly versatile and can improve the quality of images, transmits RF signals to a subject in a magnetostatic space, executes an imaging sequence in which magnetic resonance signals generated in the subject are obtained as imaging data by transmitting gradient pulses to the subject to which the RF pulses has been transmitted, and generates an image of the subject on the basis of the imaging data obtained by the execusion of the imaging sequence.SOLUTION: As preparation pulses, a first RF pulse RF1 to flip along the yz plane spins oriented in a magnetostatic field direction z in a subject SU a velocity encoding gradient pulse Gv which, in spins flipped by that first RF pulse RF1, mutually shifts the phase of spins S1 in a static state and the phase of spins S2 in a moving state and a second RF pulse RF2 to flip along the yz plane spins S1 and S2 whose phase has been shifted by the velocity encoding gradient pulse Gv are successively transmitted. After that, a killer pulse Gk is transmitted to extinguish the transverse magnetizations of the spins flipped by the second RF pulse RF2.COPYRIGHT: (C)2007,JPO&INPIT【課題】汎用性および画像品質を向上する。【解決手段】プリパレーションパルスとして、被検体SUにおいて静磁場方向zに向いたスピンをyz面に沿ってフリップさせる第1RFパルスRF1と、その第1RFパルスRF1によってフリップされたスピンにおいて、停止状態であるスピンS1の位相と、移動状態であるスピンS2の位相とを互いにシフトさせる速度エンコード勾配パルスGvと、その速度エンコード勾配パルスGvによって位相がシフトされたスピンS1,S2をyz面に沿ってフリップさせる第2RFパルスRF2とを順次送信する。その後、キラーパルスGkを送信し、第2RFパルスRF2によりフリップされたスピンの横磁化を消失させる。【選択図】図3
