Table 1.
Patient, scan and vessel characteristics of all study patients.
CACS: coronary artery calcium score, DLPe: extended Dose Length Product.
CCTA: coronary CT angiography, FFR: fractional flow reserve.
| 66 patients | |
|---|---|
| Age | 67.1 ± 9.7 |
| Gender (M/F) | 43/23 |
| Body mass index (kg/㎡) | 24.2 ± 3.4 |
| Diabetes mellitus (%) | 34(51.5) |
| Hypertension (%) | 41(62.1) |
| Dyslipidemia (%) | 51(77.3) |
| Smoking (never/former/current) | 25/28/13 |
| Total CACS | 424.7 ± 554.8 |
| Mean heart rate | 54.3 ± 5.0 |
| Tube voltage(kV) | 100 kV:58(87.9%) 120 kV:8(12.1%) |
| Tube current (mA) | 547.4 ± 15.9 |
| DLPe (mGy·cm) | 189.2 ± 86.2 |
| Effective dose (mSV) | 5.4 ± 2.6 |
| 81 vessels | |
|---|---|
| Vessels with CCTA maximum stenosis>50% | 76.5% (62/81) |
| Vessels with CT-FFR≦0.8 | 48.1% (39/81) |
| Vessels with invasive coronary angiography maximum stenosis>50% | 55.6% (45/81) |
| Vessels with invasive FFR≦0.8 | 34.6% (28/81) |
| RCA/LAD/LCX | 17/50/14 |
| Positive remodeling | 25.9% (21/81) |
| Low attenuation plaque | 14.8% (12/81) |
| Positive remodeling + low attenuation plaque | 7.4% (6/81) |
| Bifurcation | 45.7% (37/81) |
| Non-calcified plaque | 23.5% (19/81) |
| Partially calcified plaque | 34.6% (28/81) |
| Calcified plaque | 42.0% (34/81) |