This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroradiology, Subject name: Radiology
Which of the following is associated with hyperdensities in sulcal spaces,basal cisterns and anterior hemispheric fissure? 
Select and explain. 
A. Subdural hematoma, B. Extradural hematoma, C. Subarachnoid hematoma, D. intraparenchymal bleed
C: Subarachnoid hematoma
Answer: C: Subarachnoid hematoma 
Explanation: Subarachnoid Hemorrhage Bleeding in area between arachnoid and piamater mambranes (subarachnoid space) Usually presents with sudden onset of severe headache/ worst headache of life. mostly around the circle of willis. m/c/c of SAH is head trauma. Diagnosis :- On NCCT shows Hyperdensities in sulcal spaces,Syln fissure, Basal cisterns and Anterior interhemispheric fissure. Xanthochromia (of CSF) is indicative of SAH; if CT scan is negative. IOC for Acute SAH(<48 hrs)- NCCT IOC for Chronic SAH(>48hrs)- MRI Management :- Tripple H therapy (Hypeension/Hypervolemia and Hemodilution) is used to treat and prevent cerebral vasospasm after aneurysmal subarachnoid hemorrhage(SAH). Repair of aneurysm- endovascular coiling and surgical clipping.