Table 3.
Intravascular ultrasound findings.
| n = 126 | |
|---|---|
| Procedure quantitative assessment | |
| Distal reference lumen area, mm2 | 5.0 (4.0, 6.3) |
| Proximal reference lumen area, mm2 | 6.7 (5.9, 8.7) |
| MLA, mm2 | 2.3 (1.7, 2.9) |
| Minimum lumen diameter, mm | 1.9 (1.6, 2.1) |
| Minimum stent area, mm2 | 6.4 (5.6, 7.8) |
| Minimum stent area < 4.0 mm2 | 27 (21.4) |
| Maximal NIH area, % | 65.7 (50.4, 72.5) |
| Minimum stent expansion, % | 65.8 (52.7, 76.2) |
| Minimum stent expansion < 70% | 62 (49.2) |
| Minimum stent expansion < 50% | 23 (18.3) |
| MSA < 4.0 mm2 or stent expansion < 50% | 33 (26.2) |
| Largest stent area, mm2 | 9.2 (7.6, 10.2) |
| Stent eccentricity index | 0.79 (0.75, 0.82) |
| Maximum calcium arc behind the stent, ° | 165 (86, 282) |
| Maximum calcium arc within the stent, ° | 85 (0, 147) |
| Post-procedure quantitative assessment | |
| Minimum stent area*, mm2 | 7.0 (6.2, 9.0) |
| Minimum stent expansion, % | 71.8 (61.3, 80.6) |
Values are the mean ± standard deviation, number (%), or median (interquartile range).
SER stent edge restenosis, NIH neointimal hyperplasia, MLA minimum lumen area, DCB drug-coated balloon, DES drug-eluting stents.
*For cases where a new drug-eluting stent was implanted, the measured stent area corresponds to the newly placed stent; otherwise, it reflects the previous stent area following drug-coated balloon treatment.