1 — Posterior venous confluence; 2 — Basal vein; 3 — Inferior choroid vein; 4 — Interpeduncular vein; 5 — Optic tract; 6 — Anterior communicating vein; 7 — Olfactory nerve [I]; 8 — Superficial middle cerebral vein; 9 — Anterior cerebral vein; 10 — Deep middle cerebral vein;
11 — Cerebral peduncle; 12 — Internal cerebral veins; 13 — Great cerebral vein
