This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nuclear medicine, Subject name: Radiology
Bragg peak effect is most noticable in ? 
Select and explain. 
A. X ray, B. Proton, C. Neutron, D. Electron
B: Proton
Answer: B: Proton 
Explanation: Bragg peak effect Pronounced for protons Proton therapy targets tumors inside the body, spares the healthy cells Bragg curve - it plots the energy loss of ionizing radiation during its travel through matter