Fat suppression is
required for visualization of coronary arteries with MRA. Studies have shown
that cardiac fat may provide diagnostic information and thus water/fat coronary
imaging is desirable. Respiratory motion is a major problem in whole-heart
coronary imaging as respiratory gating leads to long and unpredictable scan
times. Translational motion correction (TC) may be of limited value as it may
introduce ghosting artefacts from static fat tissue. Here, we propose a 100%
scan efficiency, two-step motion correction framework using translational and
nonrigid correction for water/fat coronary MRA. The proposed approach
outperforms TC, minimising ghosting artefacts from static tissues.
