Table 2. Performance of DeepDiscern segment recognition DNN for different coronary artery segments.
| Coronary artery segment | Accuracy % (95% CI) | Sensitivity % (95% CI) | Specificity % (95% CI) | PPV % (95% CI) | NPV % (95% CI) |
| All segments | 98.4 (98.3-98.4) | 85.2 (84.8-85.6) | 99.1 (99.1-99.1) | 76.2 (75.7-76.6) | 99.5 (99.5-99.5) |
| LM | 99.9 (99.9-99.9) | 91.8 (91.1-92.5) | 99.9 (99.9-99.9) | 80.7 (79.4-82.0) | 99.9 (99.9-99.9) |
| LAD proximal | 99.8 (99.8-99.8) | 92.6 (91.9-93.2) | 99.9 (99.8-99.9) | 80.9 (79.5-82.4) | 99.9 (99.9-99.9) |
| LAD mid | 99.8 (99.7-99.8) | 90.8 (90.1-91.4) | 99.8 (99.8-99.8) | 82.1 (81.0-83.2) | 99.9 (99.9-99.9) |
| LAD apical | 99.7 (99.7-99.7) | 84.5 (83.0-86.1) | 99.8 (99.8-99.8) | 67.8 (66.1-69.5) | 99.9 (99.9-99.9) |
| 1st DIA | 99.4 (99.4-99.5) | 78.1 (75.9-80.4) | 99.6 (99.6-99.6) | 60.0 (58.1-62.0) | 99.8 (99.8-99.9) |
| 2nd DIA | 99.7 (99.7-99.8) | 73.7 (68.0-79.3) | 99.8 (99.8-99.8) | 41.2 (36.5-45.9) | 99.9 (99.9-99.9) |
| LCX proximal | 99.8 (99.8-99.8) | 87.9 (86.4-89.4) | 99.9 (99.9-99.9) | 78.8 (77.1-80.5) | 99.9 (99.9-99.9) |
| LCX distal | 99.7 (99.6-99.7) | 81.3 (79.6-83.1) | 99.8 (99.8-99.8) | 78.3 (76.3-80.2) | 99.9 (99.8-99.9) |
| Intermediate | 99.6 (99.5-99.6) | 74.1 (69.8-78.4) | 99.7 (99.7-99.8) | 63.2 (58.1-68.4) | 99.9 (99.8-99.9) |
| OM | 99.7 (99.6-99.7) | 79.2 (75.9-82.5) | 99.8 (99.7-99.8) | 53.0 (48.8-57.2) | 99.9 (99.9-99.9) |
| L-PLA | 99.5 (99.5-99.5) | 80.6 (78.3-82.8) | 99.7 (99.6-99.7) | 69.1 (66.7-71.4) | 99.8 (99.8-99.9) |
| L-PDA | 99.6 (99.5-99.7) | 83.1 (79.6-86.6) | 99.7 (99.7-99.8) | 72.5 (69.1-75.9) | 99.9 (99.9-99.9) |
| RCA proximal | 99.8 (99.8-99.8) | 87.9 (87.0-88.8) | 99.9 (99.9-99.9) | 86.7 (85.9-87.5) | 99.9 (99.9-99.9) |
| RCA mid | 99.7 (99.7-99.8) | 85.6 (84.5-86.7) | 99.8 (99.8-99.9) | 76.6 (75.3-77.9) | 99.9 (99.9-99.9) |
| RCA distal | 99.8 (99.8-99.8) | 83.2 (82.0-84.4) | 99.9 (99.9-99.9) | 88.2 (87.1-89.3) | 99.9 (99.9-99.9) |
| PDA | 99.7 (99.7-99.7) | 75.4 (73.4-77.4) | 99.8 (99.8-99.9) | 70.6 (68.7-72.5) | 99.9 (99.9-99.9) |
| PLA | 99.5 (99.5-99.5) | 77.2 (75.6-78.7) | 99.7 (99.7-99.7) | 72.0 (70.3-73.7) | 99.8 (99.8-99.8) |
| CI: confidence interval; DIA: diagonal; LAD: left anterior descending artery; LCX: left circumflex artery; LM: left main; L-PDA: left posterior descending; L-PLA: left posterolateral; NPV: negative predictive value; OM: obtuse marginal; PDA: posterior descending; PLA: posterolateral; PPV: positive predictive value; RCA: right coronary artery | |||||