Table 2.
Results of CCTA, ICA, and FFR across CAC score categories in vessels.
| CAC = 0 (N = 77) | CAC > 0 to <100 (N = 149) | CAC ≥ 100 to <400 (N = 97) | CAC ≥ 400 (N = 25) | P | |
|---|---|---|---|---|---|
| FFR | 0.81 ± 0.14 | 0.78 ± 0.13 | 0.78 ± 0.11 | 0.74 ± 0.14 | 0.016 |
| CT-FFR | 0.81 ± 0.15 | 0.78 ± 0.15 | 0.75 ± 0.16 | 0.75 ± 0.15 | 0.008 |
| FFR ≤ 0.8 (%) | 27 (35.1) | 73 (49.0) | 47 (48.5) | 15 (60.0) | 0.094 |
| ICA ≥ 50% (%) | 52 (67.5) | 94 (63.1) | 58 (59.8) | 17 (68.0) | 0.719 |
| CCTA ≥ 50% (%) | 59 (76.6) | 109 (73.2) | 72 (74.2) | 25 (100) | 0.032 |
ICA, invasive coronary angiography; CT-FFR, computed tomography derived fractional flow reserve; CCTA, coronary computed tomography angiography; FFR, fractional flow reserve; CAC, coronary artery calcium. Values are or n (%). FFR: mean ± SD.