Figure 2
From: Eliminating dark-rim artifacts in first-pass myocardial perfusion imaging
Representative first-pass CMR perfusion images from 4 of the 12 studied healthy humans: top Panels (a-1) to (d-1) show Cartesian images (arrows point to DRAs); Bottom Panels (a-2) to (d-2) show the corresponding radial images. All images correspond to similar early myocardial enhancement phase (7 heart beats after initial LV contrast uptake). Panel (e) shows summary of artifact scores assigned by two expert readers (consensus 0-4 scale scoring, 0: no DRA, 4: severe DRA). Panel (f) shows the maximum measured width of the artifact (along polar directions).