A cancer patient may see many doctors, but if regular radiation treatments are needed, the person she's going to get super-tight with is her radiation therapist. These licensed healthcare pros are responsible for not only administering radiation itself, which must be done correctly and safely, but also explaining the treatment to patients, monitoring them for reactions, and keeping detailed records. Radiation is usually booked for working hours, so as a therapist you will likely have a set, manageable schedule that isn't always easy to find in the healthcare industry. This is also a field that's expected to grow as the country's elderly population increases and more people need cancer treatment. It's important to realize that clients will be dealing with the physical and emotional difficulties that accompany a cancer diagnosis. But the ability to help them stay positive mentally and hopefully recover from the disease physically is what makes this work worth doing.