Free-breathing volumetric fat/water separation by combining radial sampling, compressed sensing, and parallel imaging.

ABSTRACT:

Purpose

Conventional fat/water separation techniques require that patients hold breath during abdominal acquisitions, which often fails and limits the achievable spatial resolution and anatomic coverage. This work presents a novel approach for free-breathing volumetric fat/water separation.

Methods

Multiecho data are acquired using a motion-robust radial stack-of-stars three-dimensional GRE sequence with bipolar readout. To obtain fat/water maps, a model-based reconstruction is used that accounts for the off-resonant blurring of fat and integrates both compressed sensing and parallel imaging. The approach additionally enables generation of respiration-resolved fat/water maps by detecting motion from k-space data and reconstructing different respiration states. Furthermore, a

SUBMITTER: Benkert T 

PROVIDER: S-EPMC5344788 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature