Shuffled magnetization-prepared multicontrast rapid gradient-echo imaging.

ABSTRACT:

Purpose

To develop a novel acquisition and reconstruction method for magnetization-prepared 3-dimensional multicontrast rapid gradient-echo imaging, using Hankel matrix completion in combination with compressed sensing and parallel imaging.

Methods

A random k-space shuffling strategy was implemented in simulation and in vivo human experiments at 7 T for 3-dimensional inversion recovery, T₂ /diffusion preparation, and magnetization transfer imaging. We combined compressed sensing, based on total variation and spatial-temporal low-rank regularizations, and parallel imaging with pixel-wise Hankel matrix completion, allowing the reconstruction of tens of multicontrast 3-dimensional images from 3- or 6-min scans.

Results

The simulation result showed that the pro

SUBMITTER: Cao P 

PROVIDER: S-EPMC5772996 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature