This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
Non-contrast spiral CT is investigation of choice for 
Select and explain. 
A. Acute ureteric colic, B. Acute pulmonary embolism, C. Acute mesenteric ischemia, D. Acute prolapsed interveebral disc
A: Acute ureteric colic
Answer: A: Acute ureteric colic 
Explanation: NCCT (Non-contrast spiral/helical CT) is widely used and currently study of choice for renal colic.