because they detect cancer .
in making machines
Isotopes are used for diagnostic or treatment.
The medical test used isotopes.
Helium-3 is used in experiments for nuclear fusion, neutron detection, cryogeny installations and RMN for medical use.
Presumably you mean radio-isotopes? These are produced usually in small reactors built for the purpose and possibly for other experimental purposes. Short lived isotopes are the most useful for medical tracer purposes as the activity soon dies away. Longer lived and higher energy ones are useful for radioactive treatment of tumors and other conditions. This question is not really relevant to Nuclear Energy and I will transfer it to Medical questions.
Medical billing and coding is an important field these days. Most colleges and community colleges offer programs in medical assistance, which include medical billing and coding.
Radioactive isotopes for medical diagnosis are used for sterilizing medical apparatus. These isotopes are also used to figure out the actual function of a person's organ and to treat it if necessary.
carbon-14
On long term, the useful isotopes of plutonium are not renewable.
radioactive isotopes are used to detect medical problems and to treat some diseases.
why did you choose the medical field?
brain scan