Patent ID: 11892533
Assignee: FUJIFILM HEALTHCARE CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. The magnetic resonance imaging device according to claim 1, wherein
the pulse sequence is a multi-shot echo planar sequence that collects echoes for image reconstruction by using two or more excitation RF pulses, the navigator scan includes a first navigator scan in which an applied polarity of phase encoding is the same as that of the main scan, and a second navigator scan in which the applied polarity of the phase encoding is opposite to that of the main scan,
the image calculation unit further includes a multi-shot reconstruction unit configured to synthesize the echo signal obtained in the main scan of each shot, and a navi-distortion correction unit configured to generate a distortion-corrected navigator scan image by using a navigator scan image obtained by the first navigator scan and a navigator scan image obtained by the second navigator scan, and
the multi-shot reconstruction unit uses phase information on a distortion-corrected navigator scan image generated by the navi-distortion correction unit to perform phase correction and synthesize the image obtained in the main scan of each shot.