Table 5.
ROC analysis of first-pass perfusion for detecting microvascular dysfunction between AL-CA patients with preserved systolic function and normal controls
| Cutoff | AUC | Sensitivity (%) (95 % CI) | Specificity (%) (95 % CI) | |
|---|---|---|---|---|
| Basal segment | ||||
| Upslope | 5 | 0.888 | 87 (82–93) | 81 (74–87) |
| TTM | 20.8 | 0.843 | 79 (70–85) | 73 (66–80) |
| MaxSI | 42 | 0.816 | 68 (59–76) | 85 (78–90) |
| Mid-ventricular segment | ||||
| Upslope | 4 | 0.794 | 58 (49–67) | 90 (84–94) |
| TTM | 19.9 | 0.848 | 85 (78–91) | 67 (59–75) |
| MaxSI | 42 | 0.741 | 58 (49–67) | 82 (75–88) |
| Apical segment | ||||
| Upslope | 4 | 0.747 | 52 (41–63) | 94(87–98) |
| TTM | 21.87 | 0.795 | 77 (67–86) | 70 (60–79) |
| MaxSI | 41 | 0.610 | 37 (27–48) | 86 (78–92) |