Technique preference by vessel location*
| Vessel | CT/CTA (%) | Equal (%) | MRI/MRA (%) | Total |
|---|---|---|---|---|
| ICA | 5 (33) | 9 (60) | 1 (7) | 15 (60) |
| VA | 8 (80) | 2 (20) | 0 (0) | 10 (40) |
| Total | 13 (52) | 11 (44) | 1 (4) | 25 (100) |
Note:—MRI indicates MR imaging; ICA, internal carotid artery; VA, vertebral artery.
* CT/CTA was preferred for diagnosis of VA dissection (P = .041, Fisher exact test), whereas there was no statistical significance to technique preference for the ICA dissections.