Figure 2
From: Atrial fibrosis segmentation thresholds: a theoretical and empirical study
A) 3D maps of left atrial enhancement ratio (ER in %) compared to B) bipolar voltage (in mV) in one patient. Arrows indicate regions of highest ER (blue) matched with lowest voltage (red). C-D) After fusion of bipolar voltage maps with LGE signal intensity maps, the voltage at each pixel was compared to the corresponding CNR and ER (averaged over 8 subjects). C) CNR vs. voltage. B) ER vs. voltage). The trend displays a “knee” shape, after which high intensity corresponding to lower voltage.