1 Precentral cerebellar veins
2 Superior sagittal sinus
3 Frontal veins
4 Superior cerebral veins
5 Internal cerebral veins
6 Parietal veins
7 Basal vein
8 Falcotentorial confluence of sinuses
9 Inferior anastomotic vein (Labbé)
10 Internal occipital vein
11 Superior petrosal sinus
12 Great cerebral vein
13 Cavernous sinus
14 Posterior cerebral veins
15 Inferior petrosal sinus
16 Straight sinus
17 Internal jugular vein
18 Superior veins of cerebellar hemisphere
19 Confluence of sinuses
20 Transverse sinus
21 Inferior veins of cerebellar hemisphere
22 Sigmoid sinus