There is evidence of subarachnoid blood: location by sulcus anatomic site.   [Yes/No]

There is evidence of intra ventricular blood products.   [Yes/No]

There is evidence of parenchymal blood products or hematoma.   [Yes/No]

There is evidence of SAH in relationship to cortical vein(s) consistent with cortical vein thrombosis.   [Yes/No]

There is evidence of SAH near falx (possibly post traumatic).   [Yes/No]

There is evidence of vertex sulcal blood (possibly vasoconstrictive vasc. disorders or vasculitis or coagulopathy source).   [Yes/No]

There is evidence of thrombosed major arterial vessel.   [Yes/No]

There is evidence of thrombosed vascular malformation simulating acute SAH.   [Yes/No]

There is evidence of acute or subacute intercurrent stroke (with or without hemorrhage, or completed stroke with chronic blood products following coagulative necrosis.   [Yes/No]

There is evidence of acute cytogenic edema consistent with acute hemorrhagic or nonhemorrhagic stroke.   [Yes/No]

There is evidence of completed stroke: subacute, chronic with completed encephalomalacia.   [Yes/No]

There is evidence of an atherosclerotic sacculo-fusiform aneurysm with or without internal thrombus.   [Yes/No]

There is evidence of giant aneurysm with or without internal thrombus.   [Yes/No]

There is evidence of mycotic aneurysm with or without internal thrombus or even abscess.   [Yes/No]

There is evidence of arteriosclerotic dolichoectasia.   [Yes/No]

There is evidence of meningoangiomatosis, of any non shunting vascular malformations simulating parenchymal hemorrhage.   [Yes/No]

There is evidence of hemorrhagic met, or other tumor as basis for SAH.   [Yes/No]

There is evidence of multicentric bleeding sites for coagulopathy as cause for bleeding.   [Yes/No]

There is evidence of hydrocephalus or pial siderosis from prior SAH.   [Yes/No]

There is evidence of intercurrent hydrocephalus or herniation syndromes.   [Yes/No]

Other abnormalities.   [Yes/No]