ACR Appropriateness Criteria® Nonvariceal Upper Gastrointestinal Bleeding: 2024 Update.

This document summarizes the relevant literature for the selection of the initial imaging in five clinical scenarios in patients with suspected or known nonvariceal upper gastrointestinal bleeding (UGIB). These clinical scenarios include suspected nonvariceal UGIB without endoscopy performed; endoscopically confirmed nonvariceal UGIB with clear source but treatment not possible or continued bleeding after endoscopic treatment; endoscopically confirmed nonvariceal UGIB without a confirmed source; suspected nonvariceal UGIB with negative endoscopy; and postsurgical or post-traumatic nonvariceal UGIB when endoscopy is contraindicated. The appropriateness of imaging modalities as they apply to each clinical scenario is rated as usually appropriate, may be appropriate, and usually not appropriate to assist the selection of the most appropriate imaging modality in the corresponding clinical scenarios of nonvariceal UGIB.

ACR Appropriateness Criteria® Screening for Abdominal Aortic Aneurysm.

Abdominal aortic aneurysm (AAA) is a significant vascular disease found in 4% to 8% of the screening population. If ruptured, its mortality rate is between 75% and 90%, and it accounts for up to 5% of sudden deaths in the United States. Therefore, screening of AAA while asymptomatic has been a crucial portion of preventive health care worldwide.

ACR Appropriateness Criteria® Pulmonary Arteriovenous Malformation (PAVM): 2023 Update.

Pulmonary arteriovenous malformations (PAVMs) occur in 30% to 50% of patients with hereditary hemorrhagic telangiectasia. Clinical presentations vary from asymptomatic disease to complications resulting from the right to left shunting of blood through the PAVM such as paradoxical stroke, brain abscesses, hypoxemia, and cardiac failure. Radiology plays an important role both in the diagnosis and treatment of PAVM.