The basic characteristics of the 2 study groups according to the occurrence of contrast stasis
| No Contrast Stasis (n = 197, 65.4%) | Contrast Stasis (n = 104, 34.6%) | P Value | |
|---|---|---|---|
| Male | 38 (19.3%) | 27 (26.0%) | .188 |
| Age (yr) | 57.4 ± 10.49 | 59.1 ± 9.76 | .159 |
| Type | <.001 | ||
| Sidewall | 114/199 (57.3%) | 85/199 (42.7%) | |
| Bifurcation | 83/102 (81.4%) | 19/102 (18.6%) | |
| Diameter | <.001 | ||
| Small (≤5 mm) | 130/173 (75.1%) | 43/108 (24.9%) | |
| Medium (5∼15 mm) | 63/119 (52.9%) | 56/119 (47.1%) | |
| Large (≥15 mm) | 4/9 (44.4%) | 5/9 (55.6%) | |
| Neck | <.001 | ||
| ≤4 mm | 142/192 (74.0%) | 50/192 (26.0%) | |
| >4 mm | 55/109 (50.5%) | 54/109 (49.5%) | |
| Dome-to-neck ratio | 1.22 ± 0.531 | 1.18 ± 0.578 | .521 |
| Volume (cm3) | 0.101 ± 0.290 | 0.297 ± 0.915 | .035 |
| Method | .001 | ||
| Catheter only | 129/175 (73.7%) | 46/175 (26.3%) | |
| Balloon-assisted | 48/86 (55.8%) | 38/86 (44.2%) | |
| Stent-assisted | 20/40 (50.0%) | 20/40 (50.0%) | |
| Obliteration grade | .641 | ||
| 0 (complete) | 29/42 (69.0%) | 13/42 (31.0%) | |
| 1 (≥90%) | 74/106 (69.8%) | 32/106 (30.2%) | |
| 2 (70–89%) | 78/125 (62.4%) | 47/125 (37.6%) | |
| 3 (50–69%) | 13/23 (56.5%) | 10/23 (43.5%) | |
| 4–5 (<50%) | 3/5 (60.0%) | 2/5 (40.0%) | |
| Packing attenuation (%) | 33.0 ± 12.11 | 30.7 ± 11.18 | .113 |