Nuclear Medicine Physicians are medical doctors who specialize in using radioactive materials to diagnose and treat diseases. They utilize imaging techniques, such as PET scans and SPECT scans, to visualize how organs and tissues function in the body. This helps in identifying conditions like cancer, heart disease, and various other disorders. In addition to diagnosis, these physicians also administer therapeutic treatments using radioactive substances. This can involve targeting specific areas, such as tumors, to deliver radiation directly to the affected tissue while minimizing damage to surrounding healthy cells. Their expertise is crucial in the field of radiology and patient care.