肠系膜上动脉夹层MSCT影像学特征分析  

Analysis of MSCT Imaging Features of Superior Mesenteric Artery Dissection

作　　者：方晓熠 黄科峰 宋君 邓辉 周怡 王燕 FANG Xiao-yi;HUANG Ke-feng;SONG Jun;DENG Hui;ZHOU Yi;WANG Yan(Department of Radiology,991st Hospital,Joint Logistics Support Force,Xiangyang 441003,Hubei Province,China)

机构地区：[1]联勤保障部队第九九一医院放射诊断科,湖北襄阳441003

出　　处：《中国CT和MRI杂志》2025年第3期171-172,共2页Chinese Journal of CT and MRI

摘　　要：目的探讨肠系膜上动脉(SMA)夹层的多层螺旋CT(MSCT)表现,进一步提高对SMA夹层影像特征的认识。方法回顾性分析15例经MSCT证实的SMA夹层患者的临床和影像资料,9例行CTA,6例行全腹部CT平扫及动态增强扫描,结合CT轴位图像及后处理重建分析总结SMA夹层影像特征。结果(1)15例均可见真假双腔(15/15)。(2)15例均显示内膜片征(15/15)。(3)11例假腔内显示血栓征(11/15)。(4)显示内膜破口(显示假腔入口11/15,显示假腔出口3/15。(5)5例显示肠系膜上动脉增粗(5/15)。(6)4例显示肠系膜上动脉周围脂肪间隙模糊征(4/15)。(7)2例显示肠管缺血征(2/15)。(8)4例由主动脉夹层累及SMA(4/15)。(9)3例同时合并腹腔干夹层(3/15)。结论MSCT能够无创、快速、准确地显示SMA夹层及邻近血管病变、评价肠管的血供情况,为临床诊断和治疗提供有价值的信息。Objective To investigate the features of superior mesenteric artery(SMA)intersections on multislice spiral CT(MSCT),and to further improve the understanding of the imaging features of SMA intersections.Methods The clinical and imaging data of 15 patients with SMA dissection confirmed by MSCT were retrospectively analyzed.9 patients underwent CTA and 6 patients underwent full abdominal CT plain scan and dynamic enhanced scan.The imaging features of SMA dissection were analyzed and summarized in combination with CT transsectional images and post-processing reconstruction techniques.Results(1)True and false double lumen were observed in 15 cases(15/15).(2)All the 15 cases showed internal diaphragm sign(15/15).(3)Thrombus was found in 11 cases(11/15).(4)Show the intima break(show the entrance of the false cavity 11/15,show the exit of the false cavity 3/15.(5)5 cases showed thickened superior mesenteric artery(5/15).(6)4 cases showed blurred adipose space around superior mesenteric artery(4/15).(7)2 cases showed intestinal ischemia sign(2/15).(8)4 cases involved SMA by aortic dissection(4/15).(9)3 cases were combined with abdominal dry dissection(3/15).Conclusion MSCT can show the lesions of SMA intersections and adjacent vessels in a non-invasive,rapid and accurate manner,and evaluate the blood supply of the intestinal tube,providing valuable information for clinical diagnosis and treatment.

关 键 词：肠系膜上动脉 夹层 MSCT 

分 类 号：R657.2[医药卫生—外科学]