ObjectiveTo summarize the manifestations of acute mesenteric ischemia (AMI) on multidetector computed tomography (MDCT) and the diagnostic value of MDCT in the prognosis of AMI. MethodRecent studies on pathophysiology, CT features, and prognosis of AMI were retrieved and reviewed. ResultsVascular insufficiency of AMI could occur as a result of mesenteric arterial embolism, arterial thrombosis, venous thrombosis, or nonocclusive. Two stages of AMI, early and late, were associated with distinct prognosis. In early ischemia, the lesions were reversible. The late AMI was characterized by the development of irreversible transmural necrosis. A delayed diagnosis leaded to considerable mortality. MDCT findings in AMI could be divided into imaging findings related to vascular insufficiency and ischemic intestinal injury. Pneumoperitoneum could be considered a sign of transmural necrosis in the AMI. While, other imaging features predicting transmural necrosis were controversial because of the heterogeneity of diagnostic tests. ConclusionsAMI is a life-threatening abdominal emergency. Early diagnosis can improve the prognosis of patient. It is important for radiologists to identify prognostic features for differentiating early from late forms of AMI.
Objective To analyze the current status and hotspots of surgical transmural ablation of atrial fibrillation using CiteSpace and VOSviewer. MethodsThe Web of Science Core Collection database was used as the data source. The CiteSpace 5.8.R3 and VOSviewer software were used to analyze the related studies on surgical transmural ablation of atrial fibrillation about the authors, countries/institutions, literature co-citation and keywords. Results A total of 109 articles were enrolled. Damiano RJ was the most prolific researcher, while Cox JL was the author with the highest number of citations. The United States was the leading country in this research field. The University of Washington was an important institution in the study of atrial fibrillation transmural ablation. The main hotpots were the effectiveness of surgical ablation, especially Cox-maze procedure, selection of the energy source of surgical ablation, combination of surgical and catheter ablations, and pulmonary vein isolation. ConclusionThis study visualizes the current research status of surgical ablation of atrial fibrillation. How to improve the effectiveness and transmurality of surgical ablation is a hot research topic in the surgical treatment of atrial fibrillation. The combination of electrophysiology mapping and surgical ablation may be the development direction in the surgical treatment of atrial fibrillation.