Radioactive materials — if handled improperly — or radiation accidentally released into the environment, can be dangerous because of the harmful effects of certain types of radiation on the body.
如果由于处理不当导致核物质或辐射不慎泄漏到环境中，将会非常危险，因为有些辐射对人体会造成有害影响。
2
Nuclear medicine - USES radioactive tracers which can be administered to examine how the body and organs function, for example the kidneys or heart.
核医学-使用放射性示踪剂，可管理，研究如何身体和器官的功能，例如肾脏或心脏。
3
Therefore, I view is that the human body with radioactive material should be said that the possibility of harm does not exist.