Radiotherapy,Megavolt

《英文msh詞典》Radiotherapy,Megavolt
[入口詞] Radiotherapy,Megavolt
[主題詞] Radiotherapy,High-Energy
[英文釋義] Radiotherapy using high-energy (megavolt or higher) ionizing radiation. Types of radiation include gamma rays,produced by a radioisotope within a teletherapy unit; x-rays,electrons,protons,alpha particles (helium ions) and heavy charged ions,produced by particle acceleration; and neutrons and pi-mesons (pions),produced as secondary particles following bombardment of a target with a primary particle.