Table 3.
Computed tomography angiographic features and successful insertion
| Insertion of a 9Fr BGC | P | ||
|---|---|---|---|
| Success | Failure | ||
| The left carotid artery | |||
| Bovine aortic arch cases | 4 | 0 | |
| In nonbovine cases | |||
| Take-off (ltC_B) angle (°) | |||
| ≥23 | 3 | 0 | <0.05 |
| <23 | 0 | 5 | |
| The right carotid artery | |||
| Take-off (rtC_rtS) angle (°) | |||
| ≥25 | 10 | 0 | NS |
| <25 | 1 | 1 | |
ltC_B angle: Take-off angle between the left common carotid artery and the brachiocephalic artery, rtC_rtS angle: Take-off angle between the right common carotid artery and the right subclavian artery, BGC: Balloon guide catheter