This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CT SCAN, Subject name: Radiology
For pericardial calcifications, which is the best investigation- 
Select and explain. 
A. MRI, B. Transesophageal echocardiography, C. USG, D. CT scan
D: CT scan
Answer: D: CT scan 
Explanation: Calcification anywhere in the body - IOC is CT scan Except for gall stones - IOC is USG So, for pericardial calcifications, the best investigation is CT scan. Figure: An incidental discovery of focal calcific plaque within the visceral pericardium. The patient was asymptomatic.