Dependence of scar contrast in LGE images on the time interval after contrast injection

Introduction It was shown that LGE imaging can be used to evaluate post-ablation scar [1,2] and pre-ablation remodeling of left atrium [3]. Visibility of scar depends on a time interval between contrast agent injection and LGE scan. In this study, we try to determine, what time post contrast injection would give optimal contrast between post-ablation scar and blood (CNRSB) and scar and normal myocardium (CNRSM).