Scan time reduction for readout-segmented EPI using simultaneous multislice acceleration: Diffusion-weighted imaging at 3 and 7 Tesla.

ABSTRACT:

Purpose

Readout-segmented echo-planar imaging (rs-EPI) can provide high quality diffusion data because it is less prone to distortion and blurring artifacts than single-shot echo-planar imaging (ss-EPI), particularly at higher resolution and higher field. Readout segmentation allows shorter echo-spacing and echo train duration, resulting in reduced image distortion and blurring, respectively, in the phase-encoding direction. However, these benefits come at the expense of longer scan times because the segments are acquired in multiple repetitions times (TRs). This study shortened rs-EPI scan times by reducing the TR duration with simultaneous multislice acceleration.

Methods

The blipped-CAIPI method for slice acceleration with reduced g-factor SNR loss was incorporated into t

SUBMITTER: Frost R 

PROVIDER: S-EPMC4854329 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature