ACR

ACR is an acronym used for several organizations and technologies across medicine, media, and other fields. The most widely encountered referents are the American College of Radiology, the American College of Rheumatology, and Automatic Content Recognition.

The American College of Radiology (ACR) is a professional medical society in the United States dedicated to radiology and imaging. Founded in 1915, it develops accreditation standards, clinical guidelines, and quality assurance programs for imaging practices. It administers the ACR Accreditation Program and publishes widely used guidelines such as the ACR Appropriateness Criteria and BI-RADS for breast imaging. The organization supports education, research, and policy advocacy, and convenes an annual scientific meeting for radiology professionals.

The American College of Rheumatology (ACR) is a professional association for rheumatologists and researchers. Founded in 1934, it advances research, education, and patient care in rheumatic diseases. The ACR develops and disseminates clinical guidelines and classification criteria, including collaborative efforts with other organizations such as ACR/EULAR criteria for various conditions. It organizes meetings, funds research, and provides patient information resources.

Automatic Content Recognition (ACR) is a technology used by media platforms to identify content within audio or video streams. It typically relies on acoustic fingerprints or embedded watermarks to match material against a reference database. Applications include targeted advertising, content recommendations, usage analytics, and rights management. Privacy and consent considerations often accompany ACR deployments.