Coronary MR angiography using image-based respiratory motion compensation with inline correction and fixed gating efficiency.

ABSTRACT:

Purpose

The purpose of this study was to evaluate a new inline motion compensation approach called image-based navigation with Constant Respiratory efficiency UsIng Single End-expiratory threshold (iNAV-CRUISE) for coronary MR angiography (CMRA).

Methods

The CRUISE gating technique was combined with iNAV motion correction and implemented inline for motion-compensated CMRA on a 1.5 Tesla scanner. The approach was compared to conventional diaphragmatic navigator gating (dNAVG) in 10 healthy subjects. The CMRA images were compared for vessel sharpness and visual score of the right coronary artery (RCA), left anterior descending artery (LAD), left circumflex, and scan time.

Results

The scan time was similar between the methods (dNAV_G : 6:32 ± 1:09 vs. iNAV-CRUI

SUBMITTER: Henningsson M 

PROVIDER: S-EPMC5763408 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature