America Chicago Radiological Society Annual Meeting & Expo(RSNA), also known as the Radiological Society of North America, is a regional radiology academic society formed by the United States and Canada. Founded in 1915, it is the 92nd session, originally called the Western Roentgen Society, renamed RSNA in 1919.

RSNA is one of the earliest established, largest in membership, highest in scientific level, and most active in academic activities among international societies. The majority of its members are in the United States and Canada, divided into members, associate members, and honorary members, etc. International members are distributed in many countries and regions in Europe, Asia, and Oceania, divided into members and honorary members.

The goal of RSNA is to promote the high-level development of radiology and related sciences through educational and research activities. RSNA provides continuing education programs and high-quality learning materials for radiologists and health professionals, constantly improving the content of these educational activities. RSNA is committed to research in all aspects of radiology and related disciplines, including promoting basic clinical medical research for health checks, and encourages exchanges and cooperation between radiologists as well as between its members and other medical specialties and professional healthcare personnel.

As one of the world's largest and most influential authoritative academic group organizations, the Annual Meeting of the Radiological Society of North America (RSNA) is the largest, highest-level, and highest academic level global academic conference in the field of radiology. Every year, more than 50,000 experts, scholars, and enterprise representatives from about 130 countries around the world participate in this event.

America Chicago Radiological Society Annual Meeting & Expo (RSNA) promotes the high-level development of radiology and related sciences through educational and research activities, is committed to research in all aspects of radiology and related disciplines, and encourages exchanges, discussions, and presentations of the latest research results in the international field of radiology. RSNA is not only a platform for academic exchange but also an important venue for showcasing the latest products and technologies in the medical imaging industry, playing a significant role in promoting the development of medical imaging.