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Magnetic resonance imaging apparatus, phase correcting method, and imaging controlling method

Grant US12575756B2 Kind: B2 Mar 17, 2026

Assignee

CANON MEDICAL SYSTEMS CORPORATION

Inventors

Takahiro Tamura, Mitsuhiro Bekku

Abstract

A MRI apparatus according to an embodiment includes processing circuitry. The processing circuitry obtains MR data acquired by implementing an IR method under a condition where a phase difference in a complex signal related to observed elements is equal to π, due to a difference in longitudinal magnetization relaxation time between the observed elements; generates phase data on the basis of the MR data; multiplies a phase angle in the phase data by 2n; unfolds the phase of phase data having the phase angle multiplied by 2n; multiplies the phase angle in the unfolded phase data by 1/(2n); generates a phase correction map used for correcting a phase with respect to the complex signal, by applying a complex conjugate to phase data having the phase angle multiplied by 1/(2n); and performs a phase correction on the MR data by using the phase correction map.

CPC Classifications

A61B 5/055 A61B 5/0033 G16H 30/40 G06T 7/0002 G06T 2207/10088

Filing Date

2023-05-16

Application No.

18318190

Claims

4