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Table 2 3 months post-ablation threshold levels selected by expert observers

From: Rapid automatic segmentation of abnormal tissue in late gadolinium enhancement cardiovascular magnetic resonance images for improved management of long-standing persistent atrial fibrillation

  Observer 1 Observer 2 Observer 3
Patient 1 1 5/8 1 5/8 1 5/8
Patient 2 1 5/8 1 5/8 1 5/8
Patient 3 1 4/8 1 5/8 1 4/8
Patient 4 1 5/8 1 5/8 1 5/8
Patient 5 1 6/8 1 5/8 1 5/8
Patient 6 1 5/8 1 5/8 1 5/8
Patient 7 1 5/8 1 5/8 1 5/8
Patient 8 1 5/8 1 5/8 1 5/8
Patient 9 1 5/8 1 6/8 1 6/8
Patient 10 1 5/8 1 5/8 1 5/8
  1. The normalized intensity levels that were selected by the expert observers to mark out the lower boundary of enhanced tissue in the training (N = 10) 3 months post-ablation LGE CMR data-sets. Possible threshold levels ranged from 1 to 6 in increments of 1/8