This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fundamentals in Radiology, Subject name: Radiology
[{'content': 'Regarding HRCT, all are true except - \nSelect and explain. \nA. Means high reconstruction CT imaging, B. Has narrow beam collimation, C. Investigation of choice for interstitial lung disease, D. Has small field of vision', 'role': 'user'}, {'content': 'Answer: A \nExplanation: HRCT means High Resolution CT Principles of HRCT : Thin collimation (1-2 mm) High frequency reconstruction algorithm (Eg : Bone algorithm).', 'role': 'assistant'}]