| Characteristic | Total (N = 15) |
| Age (years) | 70.6 ± 9.3 |
| Male | 13 (86.7) |
| Diabetes | 5 (33.3) |
| Hypertension | 10 (66.7) |
| Angina | 14 (93.3) |
| Estimated glomerular filtration rate (mL/min/1.73m2) | 74.6 ± 12.1 |
| Target lesion vessel |
|
| Left anterior descending artery | 9 (60.0) |
| Left circumflex artery | 2 (13.3) |
| Right coronary artery | 4 (26.7) |
| Pre-procedure minimum lumen diameter (mm) | 0.5 ± 0.3 |
| Pre-procedure reference vessel diameter (mm) | 3.3 ± 0.4 |
| Pre-procedure total length of calcium (mm) | 24.6 ± 10.3 |
| Pre-procedure average stenosis (%) | 84.4 ± 8.3 |