I am currently enrolled in college and completing the prerequisites for the radiologic technology program offered at my college. I had some questions about obtaining certificates in other fields of radiation, after I receive my degree in radiologic technology do I have to go back to college to earn more certifcates or can I learn them on the job? Can I find work with just a degree in radiologic technology and become specialized in other fields of radiation later?

By the way, I live in America.

These are question best answered by your own college.
Normally various branches would require different training and therefore certification.

By the way, I live in America.

You will be able to work in the field you are trained and received a certificate for but if you want to upgrade you will have to take additional courses and get certificates for those as well.

Ashley, America is a BIG continent. Are you from the US or Canada?