SPRING-RIO TSE: 2D T₂ -Weighted Turbo Spin-Echo brain imaging using SPiral RINGs with retraced in/out trajectories.

ABSTRACT:

Purpose

To develop a new approach to 2D turbo spin -echo (TSE) imaging using annular spiral rings with a retraced in/out trajectory, dubbed "SPRING-RIO TSE", for fast T₂ -weighted brain imaging at 3T.

Methods

A long spiral trajectory was split into annular segmentations that were then incorporated into a 2D TSE acquisition module to fully exploit the sampling efficiency of spiral rings. A retraced in/out trajectory strategy coupled with spiral-ring TSE was introduced to increase SNR, mitigate T₂ -decay induced artifacts, and self-correct moderate off-resonance while maintaining the target TE and causing no scan time penalty. Model-based k-space estimation and semiautomatic off-resonance correction algorithms were implemented to minimize effects of k-spa

SUBMITTER: Wang Z 

PROVIDER: S-EPMC9232877 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature