KHẢO SÁT ĐẶC ĐIỂM GIẢI PHẪU ĐỘNG MẠCH MẠC TREO TRÀNG DƯỚI Ở NGƯỜI VIỆT NAM TRƯỞNG THÀNH TRÊN CHỤP CẮT LỚP VI TÍNH

Abstract

Objective: Describing anatomy of vascular variations of Inferiror mesenteric atery (IMA) on computed tomography, in Vietnamese adult people. Methods: A cross-sectional study, retrospective; on 222 patients; with abdominal pelvic CT scan; utilizing arterial phase contrast-enhanced MDCT images; at the An Phuoc Hospital – Binh Thuan province from March 2024 to October 2024. Data of patient was collected, rescontructed and analyzed: the origin, length of IMA from origin to the first branch, branching patterns of IMA, and tracking patterns of the ascending branch of left colic artery (LCA), were examined, and their associations. Results: IMA displayed variations in the level of origin ranging from L2 to L4; 67,6% in L3.The mean length from origin to the first branch was 37,04 ± 10,15 mm, the median diameter is 2,6 mm; diameter in male group was wider than female group (p< 0,01). LCA arising from IMA and independent of the sigmoid artery with the highest proportion (49.1%). the LCA went straight upward and medial to the inner border of left kidney in 53,1% cases. Intersectional patterns of the LCA, IMA and IMV, the LCA was located lateral to IMV, was in the majority cases (55,1%). Conclusion: CTA is a useful equipment to understand anatomy of IMA, which will help the physician in preoperative step, to avoid poor outcomes.