Table 1.
ACSNet cardiac magnetic resonance imaging with late gadolinium enhancement segmentation performance
| Measure | Apex | Location Middle |
Base | Total | |
|---|---|---|---|---|---|
| LV ROI | |||||
| MYO | BA (%) | 96.3 ± 0.4 | 96.3 ± 0.4 | 96.2 ± 0.5 | 96.3 ± 0.2 |
| Dice | 0.92 ± 0.02 | 0.95 ± 0.01 | 0.94 ± 0.01 | 0.93 ± 0.01 | |
| HD (mm) | 6.9 ± 1.6 | 6.1 ± 0.8 | 6.6 ± 1.5 | 6.5 ± 0.8 | |
| Enhancement region | BA (%) | 93.3 ± 1.1 | 93.1 ± 1.2 | 92.9 ± 1.4 | 93.1 ± 0.7 |
| Dice | 0.75 ± 0.04 | 0.82 ± 0.02 | 0.80 ± 0.04 | 0.79 ± 0.02 | |
| HD (mm) | 6.4 ± 0.7 | 6.6 ± 0.7 | 7.2 ± 1.5 | 6.7 ± 0.6 | |
| Core scar region | BA (%) | 69.9 ± 2.3 | 69.8 ± 2.6 | 70.4 ± 2.6 | 70.0 ± 1.4 |
| Dice | 0.51 ± 0.06 | 0.48 ± 0.07 | 0.59 ± 0.09 | 0.51 ± 0.04 | |
| HD (mm) | 16.8 ± 3.4 | 24.0 ± 6.6 | 19.8 ± 8.7 | 19.9 ± 3.3 | |
| BA (%) | 74.9 ± 2.8 | 74.3 ± 3.1 | 75.5 ± 3.3 | 74.9 ± 1.8 | |
| Dice | 0.57 ± 0.08 | 0.52 ± 0.09 | 0.63 ± 0.11 | 0.57 ± 0.05 | |
| HD (mm) | 14.9 ± 3.7 | 24.4 ± 6.7 | 18.1 ± 8.9 | 18.9 ± 3.5 |
Balanced accuracy (BA), Dice coefficient (Dice), and Hausdorff distance (HD) are shown for 4 regions of interest (ROI) segmented by ACSNet: whole left ventricle (LV ROI), myocardial tissue (MYO), area of enhancement (Enhancement region), and scar tissue (Core scar region).
BA is expressed in percentage terms, Dice is adimensional, and HD is in millimeters. All numbers are averages ± 95% confidence interval size over apex/middle/base/total slices of all patients in the test set.