Table 2.
Lesion characteristics based on HRMRI and DSA.
| Variables |
All patients (n = 107) |
DWI– (n = 48) |
DWI+ (n = 59) |
P-value |
|---|---|---|---|---|
| Stenosis site (coronal view) | 0.506 | |||
| Low | 40 (37.4%) | 19 (39.6%) | 21 (35.6%) | |
| Middle | 62 (57.9%) | 28 (58.3%) | 34 (57.6%) | |
| Low & Middle | 5 (4.7%) | 1 (2.1%) | 4 (6.8%) | |
| Stenosis site (axial view) | 0.141 | |||
| Ventral | 37 (34.6%) | 11 (22.9%) | 26 (44.1%) | |
| Side | 31 (29.0%) | 16 (33.3%) | 15 (25.4%) | |
| Dorsal | 18 (16.8%) | 9 (18.8%) | 9 (15.5%) | |
| ≥2 quadrant | 21 (19.6%) | 12 (25.0%) | 9 (15.3%) | |
| Plaque morphology | 0.245 | |||
| Eccentric | 58 (54.2%) | 29 (60.4%) | 29 (49.2%) | |
| C type and circular | 49 (45.8%) | 19 (39.6%) | 30 (50.8%) | |
| Tandem lesion | 8 (7.5%) | 2 (4.2%) | 6 (10.2%) | 0.240 |
| Stenosis (%) | 77.8 ± 6.8% | 77.8 ± 6.2% | 77.8 ± 7.5% | 0.961 |
| Diameter at MLN (mm) | 0.6 ± 0.2 | 0.6 ± 0.2 | 0.6 ± 0.2 | 0.723 |
| Diameter at reference (mm) | 2.8 ± 0.6 | 2.7 ± 0.6 | 2.7 ± 0.5 | 0.565 |
| Plaque length (mm) | 6.6 ± 3.2 | 6.2 ± 2.8 | 6.9 ± 3.5 | 0.369 |
| Plaque length/Degree of stenosis | 8.5 ± 3.8 | 8.0 ± 3.5 | 8.9 ± 4.1 | 0.273 |
| VA at MLN (mm2) | 18.6 ± 7.6 | 18.4 ± 7.9 | 18.5 ± 7.1 | 0.666 |
| LA at MLN (mm2) | 1.2 ± 0.7 | 1.2 ± 0.8 | 1.2 ± 0.7 | 0.757 |
| WA at MLN (mm2) | 17.4 ± 7.4 | 17.2 ± 7.8 | 17.3 ± 6.8 | 0.539 |
| VA at reference (mm2) | 21.9 ± 7.0 | 23.2 ± 7.3 | 20.8 ± 6.7 | 0.076 |
| LA at reference (mm2) | 5.9 ± 2.6 | 6.1 ± 2.6 | 5.7 ± 2.6 | 0.324 |
| WA at reference (mm2) | 16.0 ± 5.0 | 17.1 ± 5.4 | 15.1 ± 4.5 | 0.040 |
| Plaque burden (%) | −1.8 ± 40.1 | −8.5 ± 33.2 | 3.7 ± 44.4 | 0.016 |
| Remodeling type | 0.028 | |||
| Positive remodeling | 29 (27.1%) | 8 (16.7%) | 21 (35.6%) | |
| Non-positive remodeling | 78 (72.9%) | 40 (83.3%) | 38 (64.4%) | |
| Enhancement ratio | 1.7 ± 0.6 | 1.7 ± 0.6 | 1.8 ± 0.7 | 0.965 |
MLN, maximal lumen narrowing; VA, vessel area; LA, lumen area; WA, wall area.