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: Medicine
Investigation of choice for detection and characterization of interstitial lung disease is 
Select and explain. 
A. MRI, B. Chest x-ray, C. Venlaon perfusion scan, D. High resoluon CT
D: High resoluon CT
Answer: D: High resoluon CT 
Explanation: High Resoluon CT (HRCT) is investigation of choice for interstitial lung disease as it can delineate the lung parenchyma upto the level of secondary pulmonary lobule.