title: Clinical experience and expectations with helium and heavy ion irradiation.
mesh_terms: D006371:Helium; D006801:Humans; D007477:Ions; D009369:Neoplasms / Q000532:radiotherapy*; D010315:Particle Accelerators; D011882:Radiotherapy, High-Energy
chemical_list: D007477:Ions; D006371:Helium