Table 1

 Absence of contact (0) or contact (1) of the artery–trigeminal root entry zone (TREZ) or vein–TREZ relationship on the symptomatic and asymptomatic sides in patients with unilateral persistent idiopathic facial pain (3D magnetic resonance imaging visualisation)

Patient noArtery–TREZ contactVein–TREZ contact
Symptomatic sideAsymptomatic sideSymptomatic sideAsymptomatic side
10001
21101
30011
41110
50000
61001
70000
80110
90001
100000
110111
121000
Total4446