Free-breathing, non-ECG, simultaneous myocardial T₁ , T₂ , T₂ *, and fat-fraction mapping with motion-resolved cardiovascular MR multitasking.

ABSTRACT:

Purpose

To develop a free-breathing, non-electrocardiogram technique for simultaneous myocardial T₁ , T₂ , T₂ *, and fat-fraction (FF) mapping in a single scan.

Methods

The MR Multitasking framework is adapted to quantify T₁ , T₂ , T₂ *, and FF simultaneously. A variable TR scheme is developed to preserve temporal resolution and imaging efficiency. The underlying high-dimensional image is modeled as a low-rank tensor, which allows accelerated acquisition and efficient reconstruction. The accuracy and/or repeatability of the technique were evaluated on static and motion phantoms, 12 healthy volunteers, and 3 patients by comparing to the reference techniques.

Results

In static and motion phantoms, T₁

SUBMITTER: Cao T 

PROVIDER: S-EPMC9339519 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature