Simultaneous Left & Right Coronary Artery Wall Imaging with Highly Efficient Beat-To-Beat Respiratory Motion Correction

Andrew David Scott^1,2, Jennifer Keegan^1,2, David Firmin^1,2

MR vessel wall imaging is commonly performed with alternate R-wave cardiac gating which improves SNR and robustness to variations in RR-interval, but results in one redundant cardiac cycle in every two. The redundant cardiac cycle has been used to image an additional parallel slice in 2D carotid wall imaging. Beat-to-beat respiratory motion correction (B2B-RMC) can obtain 3D coronary wall images with ~100% respiratory efficiency. We have used the redundant cardiac cycle to acquire an additional 3D volume in coronary vessel wall imaging with B2B-RMC, resulting in simultaneous targeted high resolution left and right 3D coronary vessel wall imaging in ~10minutes.