Motion corrected water/fat whole-heart coronary MR angiography with 100% respiratory efficiency.

ABSTRACT:

Purpose

To develop a framework for respiratory motion-corrected 3D whole-heart water/fat coronary MR angiography (CMRA) at 3T with reduced and predictable scan time.

Methods

A 3D dual-echo acquisition and respiratory motion-corrected reconstruction framework for water/fat CMRA imaging was developed. The acquisition sequence integrates a 2D dual-echo image navigator (iNAV), enabling 100% respiratory scan efficiency. Respiratory motion estimated from both the 2D iNAVs and the 3D data itself is used to produce nonrigid motion-corrected water/fat CMRA images. A first study to investigate which iNAV (water, fat, in-phase or out-of-phase) provides the best translational motion estimation was performed in 10 healthy subjects. Subsequently, nonrigid motion-corrected water/fat images

SUBMITTER: Munoz C 

PROVIDER: S-EPMC6563440 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature