Table 6.
ROC analysis of first-pass perfusion for detecting microvascular dysfunction between AL-CA patients with impaired systolic function and normal controls
| Cutoff | AUC | Sensitivity (%) (95 % CI) | Specificity (%) (95 % CI) | |
|---|---|---|---|---|
| Basal segment | ||||
| Upslope | 4.1 | 0.969 | 92 (83–98) | 93 (88–97) |
| TTM | 21.9 | 0.932 | 97 (90–100) | 76 (68–83) |
| MaxSI | 42 | 0.852 | 79 (67–88) | 85 (78–90) |
| Mid-ventricular segment | ||||
| Upslope | 4 | 0.941 | 89 (79–96) | 90 (84–94) |
| TTM | 21.68 | 0.941 | 98 (92–100) | 77 (69–83) |
| MaxSI | 36 | 0.772 | 61 (48–72) | 94 (89–97) |
| Apical segment | ||||
| Upslope | 4.57 | 0.906 | 77(62–88) | 94 (87–98) |
| TTM | 23 | 0.886 | 95 (85–99) | 74 (64–82) |
| MaxSI | 43 | 0.638 | 52 (37–68) | 77 (68–85) |