49 year old diabetic man with no cardiorespiratory symptoms currently pre-op ACL repair with crackles at the right lung base and 71 year old man with COPD, normal CXR 12 months ago and no acute symptoms, pre-op knee replacement.
The ACR Appropriateness Criteria (AC) are evidence-based guidelines designed to help referring physicians and other providers choose the best imaging or treatment option for a specific clinical condition.
The primary goal of the ACR is to serve patients and society by empowering members to advance radiological care practice and science. The gold accreditation seal from the ACR represents the highest level of image quality and patient safety. After a peer-review evaluation by board-certified physicians and medical physicists who are experts in the field, it is only given to facilities that meet ACR Practice Guidelines and Technical Standards. Accreditation by the ACR is widely regarded as the gold standard in medical imaging.
To learn more about ACR appropriateness criteria, here
https://brainly.com/question/14866433
#SPJ4