Subarachnoid hemorrhage [430], Reason for Study: ^Reason: eval for bleeding History: s/p SAH, failing EVD clamping trials Motion artifacts degraded exam quality.No evidence of new ischemic infarct on the scan.Previously seen minimal subdural hematomas on tentorium, posterior fossa and left hemisphere appears to be slightly reduced or no change since prior scan.The interpeduncular fossa subarachnoid hemorrhage has been reduced in its extent since prior scan. On gradient echo image, there is evidence of susceptibility artifacts on the surface of corresponding area indicating possible hemosiderin deposition.Ventricle size is stable with right frontal approached ventriculostomy tube which is clamped.The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. No evidence of new acute ischemic or hemorrhagic lesion on this scan.2. Interval decrease of interpeduncular fossa subarachnoid hemorrhage extent with hemosiderin deposition on the surface of corresponding area.3. No change of ventricle size since prior scan.4. No abnormal enhancement.