3. Basilar Artery Anterior inferior cerebellar artery Superior cerebellar artery Posterior cerebral artery –Posterior choroidal arteries Blood supply to the thalamus, midbrain, pons, medulla, cerebellum

6. Vertebral Artery Dural entry Anterior spinal artery Ant/post meningeal arteries Posterior inferior cerebellar artery –Anterior medullary segment –Lateral medullary segment –Tonsillomedullary –Telovelotonsillar –Cortical

8. Venous Anatomy Superficial vs deep veins Sinuses Symptoms with venous congestion

9. Clinical Cases

10. Subarachnoid Hemorrhage 71 year old man Headache, no deficit Interpeduncular blood

11. Cause of Subarachnoid Hemorrhage?

12. Pre-nidal Aneurysm

13. Selective Posterior Cerebral Arteries

14. Post- treatment

15. Risk of Bleed Eliminated? Incomplete L IIIrd n palsy No other deficits Treatment of AVM