Frequency of vessel–trigeminal root entry zone (TREZ) contact on the symptomatic and asymptomatic sides in patients. Sensitivity (symptomatic side) and specificity (asymptomatic side) in the subgroups of vessel–TREZ contacts are given in parentheses
| Relationship | Contact | Symptomatic side | Asymptomatic side | p (McNemar test) |
|---|---|---|---|---|
| Artery–TREZ | Present (1) | 4 (33%) | 4 | |
| Absent (0) | 8 | 8 (66%) | 1.0 | |
| Vein–TREZ | Present (1) | 4 (33%) | 6 | |
| Absent (0) | 8 | 6 (50%) | >0.3 | |
| Artery/vein–TREZ | Present (1) | 7 (58%) | 8 | |
| Absent (0) | 5 | 4 (33%) | >0.9 |