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
[{'content': 'The investigation of choice for imaging of urinary tract tuberculosis is – \nSelect and explain. \nA. Plain X–ray, B. Intravenous urography, C. Ultrasound, D. Computed tomography', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Since demonstration of the typical calyceal, ureteral and vesical abnormalities is critical to establish the diagnosis of tuberculosis, conventional radiological studies (e.g. IVP) remain the procedures of choice, while USG and CT have a limited role.', 'role': 'assistant'}]