American College of Radiology
The American College of Radiology, with more than 30,000 members, is the principal organization of radiologists, radiation oncologists, and clinical medical physicists in the United States.

American Institute of Ultrasound in Medicine
The American Institute of Ultrasound in Medicine is a multidisciplinary organization dedicated to advancing the art and science of ultrasound in medicine and research through its educational, scientific, literary and professional activities.

Radiologic Society of North America
The purpose of the Radiological Society of North America is to promote and develop the highest standards of radiology and related sciences through education and research.

Protecting the public health by providing reasonable assurance of the safety and effectiveness of medical devices and by eliminating unnecessary human exposure to radiation emitted from electronic products.

Association of Physicists in Medicine
The AAPM is an educational nonprofit organization devoted to the discipline of physics in medicine.