The Registered Radiologic Technologist (RT(R)) credential is awarded by the American Registry of Radiologic Technologists (ARRT). It validates competency in radiography — producing medical images using X-rays. Many sonographers hold RT(R) as their initial credential before specializing in ultrasound. ARRT also offers specialty credentials including RT(S) for Sonography, RT(M) for Mammography, and RT(BD) for Bone Densitometry.
Issuing Body
American Registry of Radiologic Technologists (ARRT) — arrt.org