Accelerated motion-robust abdominal 3D T1ρ mapping using diamond radial sampling.

ABSTRACT:

Purpose

To develop and validate a fast, motion-robust, free-breathing abdominal 3D T1ρ mapping method by combining variable-density diamond radial k-space sampling with fast-MAPSS (magnetization-prepared angle-modulated partitioned-k-space spoiled gradient-echo snapshots).

Methods

3D MAPSS T1ρ imaging was performed at 3T using five spin-lock time (TSL) pairs in phantom scans and three TSL pairs in nine healthy volunteers. Phantom experiments compared Cartesian sampling (reference) with stack-of-stars and diamond radial sampling. Volunteer scans utilized stack-of-stars and diamond sampling. T1ρ values were calculated using mono-exponential fitting with MAPSS (five or three TSL pairs) and fast-MAPSS (three TSLs). These values were compared across sampling methods and T1ρ techn

SUBMITTER: Panwar Jogi S 

PROVIDER: S-EPMC12832187 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature