X-rays and CT-scans (Medicine)

The advent of X-ray technology is intimately linked with the discovery of
radioactivity overall. Discuss this connection and how X-rays for the use of
medicine evolved over time. Use concrete nuclear reactions to examplify this
evolution.

Radioactivity is used in many different ways in medicine and for medical
treatments, for better or for worse. Highlight several or one of these ways (can
also be historical) and describe its main mechanism and how it is or was thought
to function as a treatment. If you are discussing an older treatment method, use
todays knowledge to discuss why it was not effective.

include: at least one mathematical/numerical calculation or estimate in
your essay, Show your calcuations.