MAGNETIC RESONANCE IMAGING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an MRI apparatus maintaining excellent image quality irrespective of the presence/absence of flow and motion and being capable of performing imaging in a short period of time.SOLUTION: An MRI apparatus comprises waveform setting means and imaging means. The waveform setting means sets a waveform of a compensation gradient magnetic field repeatedly applied in an RO direction for causing a gradient magnetic field moment to be zero or to be closer to zero at collection timing of an imaging MR signal on the basis of at least one of phase difference information of the MR signal varying depending upon at least a degree of one of flow and motion in an imaging portion or an imaging parameter having relevance to a phase difference, a kind and a speed range of an emphasis object and an imaging target continuously collected subsequent to application of an excitation pulse. The imaging means collects the imaging MR signal by repeatedly applying a gradient magnetic field including the compensation gradient magnetic field in the RO direction subsequent to the application of the excitation pulse and generates image data.SELECTED DRAWING: Figure 3