Repeatability and robustness of MP-GRASP T₁ mapping.

ABSTRACT:

Purpose

To demonstrate the repeatability of fast 3D T₁ mapping using Magnetization-Prepared Golden-angle RAdial Sparse Parallel (MP-GRASP) MRI and its robustness to variation of imaging parameters including flip angle and spatial resolution in phantoms and the brain.

Theory and methods

Multiple imaging experiments were performed to (1) assess the robustness of MP-GRASP T₁ mapping to B₁ inhomogeneity using a single tube phantom filled with uniform MnCl₂ liquid; (2) compare the repeatability of T₁ mapping between MP-GRASP and inversion recovery-based spin-echo (IR-SE; over 12 scans), using a commercial T1MES phantom; (3) evaluate the longitudinal variation of T₁ estimation using MP-GRASP with varying imaging par

SUBMITTER: Li Z 

PROVIDER: S-EPMC10061203 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature