Table 2.
CCTA, NIRS measurements and functional indexes
| Location of lesions | (n = 105 lesions) |
|---|---|
| LAD, n (%) | 45 (42.9%) |
| LCX, n (%) | 27 (25.7%) |
| RCA, n (%) | 33 (31.4%) |
| Proximal lesion, n (%) | 52 (49.5%) |
| Mid lesion, n (%) | 38 (36.2%) |
| Distal lesion, n (%) | 13 (12.4%) |
| Far distal lesion, n (%) | 2 (1.9%) |
| CCTA findings at maxLCBI4mm lumen | |
| Duration of days between CT and PCI, (days, IQR) | 4.0 (0-8.8) |
| Vessel area, (mm2, IQR) | 13.7 (9.9–16.7) |
| Lumen area, (mm2, IQR) | 4.9 (3.3–6.6) |
| Plaque area, (mm2, IQR) | 8.3 (5.9–10.8) |
| Plaque density, (HU, IQR) | 41.0 (26.0–60.0) |
| % diameter stenosis, (%, IQR) | 41.0 (30.0–51.0) |
| Remodeling index, (IQR) | 1.0 (0.95–1.1) |
| Spotty calcification, n (%) | 28 (26.7%) |
| Napkin-ring sign, n (%) | 9 (8.6%) |
| NIRS-IVUS findings | |
| Plaque burden at the site of maxLCBI4mm (%, IQR) | 61 (47.5–68) |
| Minimal lumen area at the site of maxLCBI4mm (mm2, IQR) | 4.8 (3.6–6.7) |
| Plaque area with minimal lumen area at the site of maxLCBI4mm (mm2, IQR) | 7.6 (5.6–11.0) |
| MaxLCBI4mm, (IQR) | 350 (220.5-483.5) |
| MaxLCBI4mm ≧ 400 | 46 (43.8%) |
| Functional indexes at the site of maxLCBI4mm | |
| ΔFFRCT (IQR) | 0.05 (0.03–0.12) |