3D MERMAID: 3D Multi-shot enhanced recovery motion artifact insensitive diffusion for submillimeter, multi-shell, and SNR-efficient diffusion imaging.

ABSTRACT:

Purpose

To enhance SNR per unit time of diffusion MRI to enable high spatial resolution and extensive q-sampling in a feasible scan time on clinical scanners.

Methods

3D multi-shot enhanced recovery motion-insensitive diffusion (MERMAID) consists of a whole brain nonselective 3D multi-shot spin-echo sequence with an inversion pulse immediately before the excitation pulse to enhance the recovery of longitudinal magnetization. The excitation flip angle is reduced to the Ernst angle. The sequence includes a trajectory using radially batched internal navigator echoes (TURBINE) readout, where a 3D projection of the FOV is acquired at a different radial angle in every shot. An image-based phase-correction method combined with compressed sensing image reconstruction was developed t

SUBMITTER: Feizollah S 

PROVIDER: S-EPMC11971498 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature