A 40 years old female is came in the depament by describing "1 have worst headache of my life". The investigation of choice for this patient

Answer- B. Computed tomography (CT)It is a case of "acute subarachnoid hemorrhage".The explosive onset of severe, excruciating headache is a common feature of subarachnoid haemonhage (SAH).Diagnosis of Subarachnoid hemorrhageThe hallmark of aneurysmal rupture is blood in the cerebrospinalfluid.More than 95% cases have enough blood to be visualized on a high quality non contract CT scan obtained within 72h.MRI can also be used to diagnose subarachnoid hemorrhage but CT is more sensitive than MRI for acute blood