Abstract: Objective To explore the diagnostic value of DSA-guided precision catheterography technique in gastroduodenal diseases.Methods Clinical data from 139 patients with gastroduodenal diseases treated at the Third People's Hospital of Xinjiang Uygur Autonomous Region and Shufu County People's Hospital in Kashgar Prefecture between January 2016 and October 2024 were included in this study.Disease classifications included:38 cases of gastroduodenal obstruction;60 cases of gastroduodenal wall disruption (23 microgastric perforations,9 duodenal ruptures,17 gastroenteric anastomotic leaks,11 cholecystoduodenal fistulas);12 cases of superior mesenteric artery compression syndrome;16 cases of duodenal diverticulum;and 13 cases of gastroparesis.All patients underwent both CT examination (CT group) and DSA-guided precise cannulation radiography (DSA group).Using discharge diagnoses and clinical cure as evaluation standards,the disease diagnosis accuracy of the two methods was compared.Results Both the diagnostic accuracy for individual diseases (gastroduodenal obstruction,gastroduodenal wall disruption,superior mesenteric artery compression syndrome,duodenal diverticulum,and gastroparesis) and the overall diagnostic accuracy,as well as the accuracy in localizing lesions within gastroduodenal wall disruption cases,were significantly superior in the DSA group compared to the CT group.These differences were statistically significant (P<0.05).Conclusion DSA-guided precise cannulation radiography significantly improves the diagnostic accuracy for gastroduodenal obstruction,gastroduodenal wall disruption,superior mesenteric artery compression syndrome,duodenal diverticulum,and gastroparesis,as well as the accuracy in localizing lesions within gastroduodenal wall disruption cases.It could serve as an auxiliary diagnostic tool.

Key words: stomach, duodenum, DSA, guidewire guidance, angiography