This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
IOC for removascular hypertension 
Select and explain. 
A. IVP, B. Captopril induced radio nucleotide scan, C. Spiral CT, D. MR angiography
D: MR angiography
Answer: D: MR angiography 
Explanation: IOC for Renovascular hypertension - MR angio.
Catopril renal scintigraphy - preferred screening test.
Spiral CT : Most sensitive and specific screening (after angio).