A radiologic technologist is someone who works under the supervision of a radiologist and helps them complete their daily tasks. This person will complete tasks like operating MRI machines, taking X-rays and CAT scans, and assisting patients. They will also perform various other duties throughout the work day as needed. A radiologic technologist is not the same thing as a radiologist. While their names may be extremely similar, they have very different jobs. Radiologic technologists require a lot less education and have far less responsibilities than radiologists do. Radiologic technologists, sometimes called radiologic technicians, are directly supervised by radiologists.