Baseline characteristics (n = 22)
| Mean (SD) age (years) | 55.7 (9.3) |
| Coronary risk factors | |
| Smoking (n (%)) | 15 (68) |
| Hypercholesterolaemia (n (%)) | 12 (55) |
| Family history (n (%)) | 12 (55) |
| Hypertension (n (%)) | 11 (50) |
| Diabetes (n (%)) | 6 (26) |
| Treated vessel | |
| LAD (n (%)) | 12 (55) |
| LCX (n (%)) | 6 (26) |
| RCA (n (%)) | 4 (18) |
| Prescribed dose | |
| 16 Gy (n (%)) | 9 (41) |
| 14 Gy (n (%)) | 5 (23) |
| 12 Gy ( n (%)) | 8 (36) |
LAD, left anterior descending coronary artery; LCX, left circumflex coronary artery; RCA, right coronary artery.