The American Registry of Radiologic Technologists (ARRT) is the world’s largest organization offering credentials in medical imaging, interventional procedures, and radiation therapy. We certify and register technologists in a range of disciplines by overseeing and administering education, ethics, and examination requirements.

The mission of the American Society of Radiologic Technologists (ASRT) is to advance and elevate the medical imaging and radiation therapy profession and to enhance the quality and safety of patient care.

The Association of Educators in Imaging and Radiologic Sciences (AEIRS) is an international professional organization providing resources for education, networking, and research.

The Occupational Outlook Handbook is a publication of the United States Department of Labor's Bureau of Labor Statistics that includes information about the nature of work, working conditions, training and education, earnings and job outlook for hundreds of different occupations in the United States.