title: Radiological physics of pions.
mesh_terms: D004735:Energy Transfer; D008962:Models, Theoretical; D011095:Polyethylenes; D011851:Radioactivity; D011874:Radiometry; D011882:Radiotherapy, High-Energy / Q000295:instrumentation*; D014867:Water
chemical_list: D011095:Polyethylenes; D014867:Water