Table 3.
CT and ICA finding in 27 patients.
| Segments (108)/vessels (81) | Per-segment analysis | Per-vessel analysis | ||||||
|---|---|---|---|---|---|---|---|---|
| CTA | CTP (stress induced) | ICA | CTA | CTP (stress induced) | ICA | |||
| Positive | Negative | Significant | Positive | Negative | Significant | |||
| 40–70% | 46 | 29 | 17 | 27 | 23 | 15 | 8 | 13 |
| Nonsignificant (40–49%) |
5 | 3 | 2 | 2 | 3 | 2 | 1 | 2 |
| Significant (50–70%) |
41 | 26 | 15 | 25 | 20 | 13 | 7 | 11 |
| 10–39% | 36 | 0 | 36 | 0 | 32 | 0 | 32 | 0 |
| >70% | 26 | 25 | 1 | 25 | 26 | 25 | 1 | 25 |
|
| ||||||||
| ≥50% | 67 | 54 | 52 | 46 | 40 | 38 | ||
| CTP overruling decision (falsely) | 3 (1) | 16 (1) | 2 (0) | 8 (1) | ||||
Only segments with minimal 10% stenosis were included for analysis. Cut-off for significant stenosis was 50%. CTA: computed tomography angiography; CTP: computed tomography perfusion; ICA: invasive coronary angiography.