What are the various uses of radioactivity in healthcare? What are the future trends in healthcare with respect to the use of radioactivity?

minimum of 2 3 paragraphs

Provided an in depth explanation or analysis of subject or topic. 4
Used a clear, logical and organized line of reasoning. 4
Provided adequate justification and evidence that support the opinion expressed. 4
Used clear and understandable language with no grammar and spelling mistakes. 2
Used vocabulary relevant to the current and previous weeks topics at least five terms.