2.
血管水平影像学特征
Imaging characteristics at the vascular level
| Characteristics | Overall (n=124) | FFR在0.8(n=37) | FFR > 0.8 (n=87) | P |
| LAD: Left anterior descending; LCX: Left circumflex artery; RCA: Right coronary artery; MDS: Maximum diameter stenosis; MAS: Maximum area stenosis; TPB: Total plaque burden; FAI: Fat attenuation index; CT-FFR: Fractional flow reserve. | ||||
| Lesions distribution (n, %) | ||||
| LAD | 89(71.8) | 32 (86.5) | 57 (65.5) | 0.018 |
| LCX | 10(8.1) | 1 (2.7) | 9 (10.3) | 0.279 |
| RCA | 25 (20.2) | 4 (10.8) | 21 (24.1) | 0.091 |
| CACS/vessel | 43.3 (2.4, 168.2) | 85.8 (6.8, 234.1) | 42.5 (0.6, 110.2) | 0.024 |
| Lesion length (mm) | 24.8±10.7 | 27.8±12.8 | 23.5±9.5 | 0.075 |
| MDS (%) | 59.6±10.0 | 63.8±9.9 | 57.6±9.5 | 0.003 |
| MAS (%) | 67.9±9.5 | 73.3±9.4 | 65.5±8.7 | 0.000 |
| TPB (%) | 54.7±12.3 | 58.2±11.3 | 53.1±12.5 | 0.042 |
| Perivascular FAI(HU) | -78.4±8.8 | -73.3±9.5 | -80.6±7.5 | 0.000 |
| CT-FFR | 0.83±0.06 | 0.77±0.04 | 0.86±0.04 | 0.000 |
| Invasive FFR | 0.83±0.10 | 0.71±0.09 | 0.87±0.04 | 0.000 |