Patient demographics and clinical characteristics
| CT Angiography | Contrast-Enhanced MR Imaging, Brain | Contrast-Enhanced MR Imaging, IAC | Total | |
|---|---|---|---|---|
| No. of patients | 228 | 304 | 266 | 798 |
| No. of males (%) | 106 (47) | 115 (38) | 98 (37) | 319 (40) |
| Age (yr) (mean) (range) | 56 (19–90) | 55 (15–90) | 54 (6–93) | 55 (6–93) |
| Emergency setting (%) | 191 (84) | 63 (21) | 3 (1) | 257 (32) |
| Diagnostic efficacy | 5 (2.2%) | 4 (1.3%) | 4 (1.5%) | 13 (1.6%) |
| Therapeutic efficacy | 3 (1.3%) | 2 (0.7%) | 3 (1.1%) | 8 (1.0%) |
Note:—IAC indicates internal auditory canal.