Table 2. CTA results and CACS among the groups with different severity of CHD.
| Project | Group 1 (normal) | Group 2 (mild CHD) | Group 3 (moderate CHD) | Group 4 (severe CHD) |
|---|---|---|---|---|
| No. of subjects | 412 | 288 | 200 | 100 |
| CACS (range) | 0 (0) | 34.6±28.4 (1–100) | 198.7±94.3 (101–400) | 687.4±412.6 (>400) |
| No. of stenosed segments | 0 | 1.2±0.4 | 2.4±0.6 | 3.6±0.8 |
| Degree of stenosis (%) | 0 | 32.4±8.7 | 58.6±6.4 | 82.4±7.8 |
| Plaque composition (mm3) | 0 | |||
| Calcified | 0.8±0.4 | 1.2±0.5 | 1.6±0.6 | |
| Mixed | 0.4±0.3 | 0.8±0.4 | 1.2±0.5 | |
| Non-calcified | 0.2±0.2 | 0.4±0.3 | 0.8±0.4 | |
| Plaque morphology (mm3) | 0 | |||
| Smooth | 0.9±0.3 | 1.1±0.4 | 1.3±0.5 | |
| Irregular | 0.3±0.2 | 0.7±0.3 | 1.1±0.4 | |
| Ulcerated | 0.1±0.1 | 0.2±0.2 | 0.4±0.3 | |
| Plaque vulnerability (mm3) | 0 | |||
| Positive remodeling | 0.1±0.1 | 0.2±0.2 | 0.3±0.3 | |
| Low-attenuation plaque | 0.1±0.1 | 0.2±0.2 | 0.3±0.3 | |
| Napkin-ring sign | 0.1±0.1 | 0.2±0.2 | 0.3±0.3 | |
| Spotty calcification | 0.1±0.1 | 0.2±0.2 | 0.3±0.3 |
Data are presented as mean ± standard deviation or number. CTA, computed tomography angiography; CACS, coronary artery calcium score; CHD, coronary heart disease.