This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Radiology
[{'content': 'Maximum radiation exposure \nSelect and explain. \nA. X-ray abdomen, B. Chest X ray, C. IV pyelography, D. Barium Enema', 'role': 'user'}, {'content': 'Answer: D \nExplanation: X-ray abdomen- Single spot film, therefore comparatively less radiation exposure. Chest X ray- Single spot film, therefore comparatively less radiation exposure. IV pyelography- Sequential/ multiple imaging but covers less area,* therefore, comparatively less radiation exposure. Barium Enema- Sequential/ multiple imaging, covers larger area. therefore comparatively maximum radiation exposure. PET CT - Has highest radiation exposure. Diagnostic Procedure Typical Effective Dose Chest Radiograph(PA) 0.02msv Extremities /limbs 0.01msv Skull 0.07msv pelvis 0.7msv Abdomen 1.0msv Mammography (bilateral in 2 planes) 0.5msv Intravenous pyelography 2.5msv Head Ct 2.3msv Chest CT 8 Abdominal CT 10 PET 7.2msv Barium Enema 7-8msv', 'role': 'assistant'}]