Table 1.
Physical, CT acquisition condition, FFRCT, vessel, and myocardial characteristics in the right coronary artery
| All n = 443 |
FFRCT ≤ 0.80 n = 60 |
FFRCT > 0.80 n = 383 |
|
|---|---|---|---|
| Physical characteristics | |||
| Age (years) | 67.2 ± 9.9 | 69.3 ± 7.8 | 66.9 ± 10.2 |
| Men, n (%) | 304 (69%) | 36 (60%) | 310 (81%) |
| Height (cm) | 172.6 ± 9.5 | 171.4 ± 11.2 | 172.8 ± 9.2 |
| Body weight (kg) | 81.0 ± 15.2 | 77.7 ± 17.2 | 81.5 ± 14.8 |
| Body surface area (m2) | 1.9 ± 0.2 | 1.9 ± 0.3 | 1.9 ± 0.2 |
| Body mass index (kg/m2) | 27.1 ± 4.3 | 26.2 ± 4.3 | 27.2 ± 4.3 |
| Hypertension, n (%) | 92 (51%) | 11 (58%) | 81 (51%) |
| Dislipidemia, n (%) | 73 (41%) | 8 (42%) | 65 (41%) |
| Diabetes, n (%) | 33 (19%) | 5 (26%) | 28 (18%) |
| Current smoking, n (%) | 57 (32%) | 7 (35%) | 50 (31%) |
| CT images acquisition condition | |||
| Time phase in the cardiac cycle during CT imaging | 75.0 ± 5.4 | 74.7 ± 4.6 | 75.1 ± 5.5 |
| Heart rate (beats/min) | 60.3 ± 8.6 | 62.5 ± 9.2 | 59.9 ± 8.5 |
| Atrial fibrillation, n (%) | 46 (10%) | 7 (12%) | 39 (10%) |
| Systolic blood pressure (mmHg) | 143.8 ± 19.8 | 147.2 ± 10.9 | 142.3 ± 19.3 |
| Diastolic blood pressure (mmHg) | 83.1 ± 12.1 | 87.8 ± 12.8 | 82.4 ± 11.9 |
| Interval between FFRCT and invasive coronary angiography (days) | 22.0 ± 18.4 | 21.0 ± 15.0 | 22.1 ± 18.8 |
| FFRCT characteristics | |||
| Proximal FFRCT | 1.00 ± 0.00 | 1.00 ± 0.00 | 1.00 ± 0.00 |
| Distal FFRCT | 0.88 ± 0.08 | 0.72 ± 0.09† | 0.90 ± 0.04 |
| ΔFFRCT | 0.12 ± 0.08 | 0.28 ± 0.09† | 0.10 ± 0.04 |
| Vessel morphology | |||
| Vessel length (mm) | 114.0 ± 18.1 | 118.3 ± 22.3 | 113.4 ± 17.4 |
| Lumen volume (mm3) | 1074.0 ± 342.3 | 825.7 ± 255.0† | 1113.0 ± 337.9 |
| Proximal vessel diameter (mm) | 4.5 ± 1.0 | 3.9 ± 0.8† | 4.6 ± 1.0 |
| Distal vessel diameter (mm) | 2.8 ± 0.6 | 2.4 ± 0.5† | 2.9 ± 0.6 |
| V/L ratio (mm3/mm) | 9.4 ± 2.6 | 6.5 ± 1.6† | 9.9 ± 2.4 |
| LAP volume (mm3) | 15.6 ± 18.5 | 18.6 ± 18.0 | 15.1 ± 18.6 |
| IAP volume (mm3) | 156.6 ± 174.9 | 224.7 ± 194.5† | 145.9 ± 169.4 |
| CP volume (mm3) | 29.6 ± 68.2 | 67.7 ± 89.9† | 23.6 ± 62.2 |
| Myocardial morphology | |||
| LV mass (g) | 109.6 ± 31.9 | 107.6 ± 31.2 | 109.8 ± 32.0 |
| LV mass index (g/m2) | 56.0 ± 14.6 | 57.4 ± 15.8 | 55.8 ± 14.4 |
CP, calcified plaque; IAP, intermediate-attenuation plaque; LAP, low-attenuation plaque; LV, left ventricular
*p < 0.05 vs. FFRCT > 0.80. †p < 0.01 vs. FFRCT > 0.80