Question

What are Radioisotopes are often used in ?

Answer 1

In medicine, radioisotopes are used for diagnostic purposes such as for PET scans.

In scientific research, radioisotopes are used to label specific types of molecules, so that they can be visualized more easily (e.g. on an X-ray film).

These are just two common examples of what radioisotopes are used for, but a quick Google will give you tons more information!