Rigid motion-corrected magnetic resonance fingerprinting.

ABSTRACT:

Purpose

Develop a method for rigid body motion-corrected magnetic resonance fingerprinting (MRF).

Methods

MRF has shown some robustness to abrupt motion toward the end of the acquisition. Here, we study the effects of different types of rigid body motion during the acquisition on MRF and propose a novel approach to correct for this motion. The proposed method (MC-MRF) follows 4 steps: (1) sliding window reconstruction is performed to produce high-quality auxiliary dynamic images; (2) rotation and translation motion is estimated from the dynamic images by image registration; (3) estimated motion is used to correct acquired k-space data with corresponding rotations and phase shifts; and (4) motion-corrected data are reconstructed with low-rank inversion. MC-MRF was validated i

SUBMITTER: Cruz G 

PROVIDER: S-EPMC6519164 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature