Different types of occlusion on HR-VWI versus DSA
| HR-VWI | DSA | Total | |||
|---|---|---|---|---|---|
| IICA Occlusion | EICA Occlusion | Tandem Occlusion | Near-Occlusion | ||
| IICA occlusion | 4 (8.9%) | 0 (0.0%) | 2 (4.4%) | 0 (0.0%) | 6 (13.3%) |
| EICA occlusion | 0 (0.0%) | 1 (2.2%) | 6 (13.3%) | 0 (0.0%) | 7 (15.6%) |
| Tandem occlusiona | 0 (0.0%) | 0 (0.0%) | 18 (40.0%) | 0 (0.0%) | 18 (40.0%) |
| Near-occlusion | 0 (0.0%) | 0 (0.0%) | 8 (17.8%) | 6 (13.3%) | 14 (31.1%) |
| Total | 4 (8.9%) | 1 (2.2%) | 34 (75.6%) | 6 (13.3%) | 45 (100%) |
āµa Tandem occlusion, concomitant extracranial ICA ipsilateral to the intracranial ICA occlusion. Fisher exact test: Pā<ā.001.