Simultaneous multislice cardiac multimapping based on locally low-rank and sparsity constraints.

ABSTRACT:

Background

Although quantitative myocardial T1 and T2 mappings are clinically used to evaluate myocardial diseases, their application needs a minimum of six breath-holds to cover three short-axis slices. The purpose of this work is to simultaneously quantify multislice myocardial T1 and T2 across three short-axis slices in one breath-hold by combining simultaneous multislice (SMS) with multimapping.

Methods

An SMS-Multimapping sequence with multiband radiofrequency (RF) excitations and Cartesian fast low-angle shot readouts was developed for data acquisition. When 3 slices are simultaneously acquired, the acceleration rate is around 12-fold, causing a highly ill-conditioned reconstruction problem. To mitigate image artifacts and noise caused by the ill-conditioning, a recons

SUBMITTER: Emu Y 

PROVIDER: S-EPMC11663759 | biostudies-literature | 2024 Winter

REPOSITORIES: biostudies-literature