I'll give some info, but in the future, doing a little research online could provide answers. I would hope that the fact that Radiology is under the "Graduate Medical Education" section would have provided a clue, but here is some info:
Radiology is a medical specialty, meaning you must finish undergrad, medical school (same schools as every other MD), 1 year of clinical medicine or surgery, then 4 years of radiology residency. You are paid for the last 5 years of training as a resident.
If you want to be the person that takes x-rays, CTs, MRIs, ultrasound, then you are thinking of radiation technologists. They have 2 year training programs.
