This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2018, Subject name: Radiology
Radio pharmaceutical used for phagocyte study scan:- 
Select and explain. 
A. Sulfur colloid scan, B. Thallium 201, C. Technetium peechnetate scan, D. MDP scan
A: Sulfur colloid scan
Answer: A: Sulfur colloid scan 
Explanation: - Tc99m-Sulfur Colloid:- Taken up by 1. Phagocytes2. Reticulo endothelial cells | Used to evaluate:1. Occult abscess2. Splenic diseases3. Focal Nodular hyperplasia-| Kupffer cells - Hot uptake4. Fibrolamellar variant HCC - No Kupffer cells-Cold uptake