subarachnoid hemorrhage well seen on T2 fl2d coronal GRE, subarachnoid hemorrhage of unknown reason, may have small thrombosed cortical vein – very small, on pre-contrast T1, also likely small adjacent skull hemangioma, seen on both CT and MR

Part of the on-line supplement to Neuroradiology – The Essentials with MR and CT (© 2015)