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
Most reliable method of diagnosing pulmonary embolism is: September 2004 
Select and explain. 
A. Plain skiagram, B. Perfusion, C. Electrocardiography, D. Angiography
D: Angiography
Answer: D: Angiography 
Explanation: Ans. D i.e. Angiography Pulmonary angiography has been now replaced by CT and MR angiography