In case of subarachnoid haemorrhage, investigation of choice is: March 2011: (A) Non contrast CT scan, (B) MRI, (C) MRI angio with imaging, (D) Ultrasound
Answer is A. Ans. A: Non contrast CT scan The diagnosis of SAH can be made on CT, but a negative result does not exclude the diagnosis since small amounts of blood in the subarachnoid space cannot be detected by CT