Dual-source CT in Diagnosis of Coronary Artery Fistula and its Value

Background: Coronary artery fistula refers to the symptom that the coronary artery trunk or branch connects with the heart cavity or the pulmonary circulation blood vessels in a congenital or an acquired manner. As early detection and diagnosis of CAF was necessary for the prevention and management of late symptoms and complications, we are supposed to master the imaging performance of CAFs so as to make a correct diagnosis. This paper seeks to investigate the imaging manifestations and application value of CT diagnosis of coronary fistula and its application value. Methods: To retrospectively analyze the clinical data and DSCT image data of 62 patients with coronary fistula, and summarize, analyze and summarize their image manifestations and types.Results: 62 CAFs originate from 58 LCA vessels, 32 RCA vessels. The distribution frequency of drainage site from high to low was as follows: 40 cases (63%) of the main pulmonary artery, 10 cases (16%) of the right atrium, 7 cases (11%) of the right ventricle, 3 cases (5%) of the left ventricle, 1 case (2%) of the left atrium, and 1 case of coronary sinus (2%), 1 case of the right lower pulmonary vein (2%). There were 39 cases (63%) of single fistula vessel, and 23 cases (37%) of multiple fistula vessel, including 21 cases of left and right coronary arteries. Coronary artery-pulmonary fistulae were the most common with a total of 40 cases. Conclusion: The popularization of CT improved the detection rate of CAFs. Coronary pulmonary-artery fistula was probably the most common seen type of CAFs. ECG-gating coronary artery CTA can accurately assess the origin of CAFs, the course of fistula vessels, and the drainage site, thereby providing important information for clinicians to treat coronary fistula.Trial registration: retrospectively registered