Table 2.
ACSNet cardiac magnetic resonance imaging with late gadolinium enhancement clinical feature performance
| Feature | LV Volume Tertile |
Total | ||
|---|---|---|---|---|
| Lower | Middle | Upper | ||
| LV ROI | ||||
| GT (cc) | 226 (186–259) | 307 (280–327) | 405 (334–573) | 312 (186–573) |
| Pred (cc) | 237 (193–273) | 312 (279–339) | 424 (342–614) | 323 (193–614) |
| Norm. MAE (%) | 10.3 (4.8–18.8) | 4.5 (0.6–8.0) | 4.4 (1.3–10.3) | 6.3 (0.6–18.8) |
| MYO | ||||
| GT (cc) | 121 (85–159) | 171 (110–215) | 180 (114–274) | 158 (85–274) |
| Pred (cc) | 144 (109–186) | 187 (144–226) | 217 (159–351) | 183 (109–351) |
| Norm. MAE (%) | 24.1 (12.6–41.1) | 12.7 (1.8–30.8) | 24.7 (2.2–53.7) | 20.1 (1.8–53.7) |
| Enhancement region | ||||
| GT (cc) | 27 (15–46) | 24 (3–39) | 30 (7–47) | 27 (3–47) |
| Pred (cc) | 21 (7–43) | 19 (0–33) | 26 (3–38) | 22 (0–43) |
| Norm. MAE (%) | 26.6 (5.9–53.4) | 31.1 (3.8–100.0) | 45.4 (15.9–87.5) | 34.2 (3.8–100.0) |
| Core scar region | ||||
| GT (cc) | 13 (6–21) | 11 (1–19) | 17 (4–30) | 13 (1–30) |
| Pred (cc) | 11 (5–20) | 9 (0–17) | 14 (2–22) | 12 (0–22) |
| Norm. MAE (%) | 14.4 (1.2–41.2) | 42.5 (18.2–100.0) | 42.7 (32.1–72.0) | 33.7 (1.2–100.0) |
Ground truth (GT) and predicted (Pred.) volumes and mean absolute error normalized by GT volume (Norm. MAE), together with ranges (parentheses), 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). GT and Pred. are expressed in cubic centimeters and Norm. MAE in percentage terms. Numbers represent averages across all patients in the test set (Total) and patients grouped by GT LV volume tertile (lower/middle/upper).