Final answer:
An Interventional Radiologist is a specialist who uses x-rays and radioactive materials to treat diseases, often employing radioembolization techniques to treat cancer with minimal invasiveness.
Step-by-step explanation:
A physician who specializes in the treatment of disease using x-rays and radioactive materials is known as an Interventional Radiologist. These medical professionals are skilled in conducting procedures that employ radiation therapy and radioisotopes to treat various diseases, particularly cancer. The interventional radiologist utilizes minimally invasive techniques that are cost-effective and cause less pain, leading to shorter hospital stays and quicker recovery times for patients. An example of such a procedure is radioembolization, where radioactive seeds are implanted within the blood vessels supplying tumors, effectively cutting off their blood supply and destroying tumor cells