Radioisotopes has many uses in science and technology here is this article i will explain some situations which radioisotopes are used.
Radioisotopes are formed by artificial radioactivity. Let us look various uses of that.

• Radioisotopes are used for the treatment of cancer
• Radioisotopes are used for sterilizing surgical instruments.
• Radioisotopes are used as a tracer for diagnosing various diseases 
• Radioisotopes are used as a tracer for determining efficiency of thyroid gland, kidney etc....
• Radioisotopes are used to identify defects in metallic castings and pipes.
• Radioisotopes are used a s a tracer for determining effects of chemical substance in plants and animals.
• Radioisotopes are used for sterilizing food stuffs.
• Radioisotopes used for calculating blood circulation.

This is a good way to treat cancer. The gamma rays of this Radioisotopes has high penetrating power and also it has a power to destroy cells. So doctors allow this gamma rays to fall on parts where cancer affected and thereby the cancer affected cells are destroyed. 
These are some brief uses there are also many other variety of use for this. It will be on our coming posts. 
Bye take care. Please do a comment.