Rotating single-shot acquisition (RoSA) with composite reconstruction for fast high-resolution diffusion imaging.

ABSTRACT:

Purpose

To accelerate high-resolution diffusion imaging, rotating single-shot acquisition (RoSA) with composite reconstruction is proposed. Acceleration was achieved by acquiring only one rotating single-shot blade per diffusion direction, and high-resolution diffusion-weighted (DW) images were reconstructed by using similarities of neighboring DW images. A parallel imaging technique was implemented in RoSA to further improve the image quality and acquisition speed. RoSA performance was evaluated by simulation and human experiments.

Methods

A brain tensor phantom was developed to determine an optimal blade size and rotation angle by considering similarity in DW images, off-resonance effects, and k-space coverage. With the optimal parameters, RoSA MR pulse sequence and recons

SUBMITTER: Wen Q 

PROVIDER: S-EPMC5607091 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature