Table 1.

Diameter and angle of bridging veins entering the superior sagittal sinus

Groups	Diameter (mm)	Angle (°)
Anterior group	2.0 ± 0.9 (0.6–5.2)	93 ± 34 (40–170)
Posterior group	3.0 ± 1.1 (0.8–5.8)**	43 ± 25 (10–90)**
Total	2.6 ± 1.1 (0.6–5.8)	66 ± 39 (10–170)

** Compared with bridging veins in anterior group, P < 0.01