Low-rank motion correction for accelerated free-breathing first-pass myocardial perfusion imaging.

ABSTRACT:

Purpose

Develop a novel approach for accelerated 2D free-breathing myocardial perfusion via low-rank motion-corrected (LRMC) reconstructions.

Methods

Myocardial perfusion imaging requires high spatial and temporal resolution, despite scan time constraints. Here, we incorporate LRMC models into the reconstruction-encoding operator, together with high-dimensionality patch-based regularization, to produce high quality, motion-corrected myocardial perfusion series from free-breathing acquisitions. The proposed framework estimates beat-to-beat nonrigid respiratory (and any other incidental) motion and the dynamic contrast subspace from the actual acquired data, which are then incorporated into the proposed LRMC reconstruction. LRMC was compared with iterative SENSitivity Encoding

SUBMITTER: Cruz G 

PROVIDER: S-EPMC10952238 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature