Meet the people working in the Radiology Department which is a medical specialty that uses imaging to diagnose and treat diseases seen within the body. Radiologists use a variety of imaging techniques such as X-ray, ultrasound, computed tomography (CT), nuclear medicine including positron emission tomography (PET) and magnetic resonance imaging (MRI) to diagnose and/or treat diseases. Nuclear Medicine Technologists prepare radioactive drugs and administer them to patients for Imaging and for treatment of specific diseases.