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Reference.org
American College of Radiology
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<p>The American College of Radiology (ACR), founded in 1923, is a professional medical society representing nearly 40,000 diagnostic <a href="/facts/Radiology/FMXvDL3u">radiologists</a>, radiation <a href="/facts/Oncology/t2CUAEJQ">oncologists</a>, interventional radiologists, nuclear medicine <a href="/facts/Physician/qJ3woFvG">physicians</a> and medical <a href="/facts/Physicist/cQcgvSIm">physicists</a>. </p><p>The ACR has 54 chapters in the United States, Canada and the Council of Affiliated Regional Radiation Oncology Societies (CARROS). </p>