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
PET scan uses – 
Select and explain. 
A. 2–Fluorodeoxyglucose, B. Technetium, C. Chromium, D. Cobalt
A: 2–Fluorodeoxyglucose
Answer: A: 2–Fluorodeoxyglucose 
Explanation: Fluorodeoxyglucose is a radiopharmaceutical used in medical imaging modality positron emission tomography (PET).