标题：无扩张Riolan动脉弓的CTA表现及临床应用价值

      作者：赵建春，张慎忠，季国军，邓广均    (南通市通州区人民医院放射科，江苏 南通 226300)

      卷次： 2018年29卷9期

      【摘要】 目的 探讨无扩张Riolan动脉弓的CT血管成像(CTA)表现及临床应用价值。方法 回顾性分析2014年7月至2017年8月期间南通市通州区人民医院收治的216例患者的肠系膜CTA及临床资料，将其中的143例有腹部病变患者作为研究组，73例无腹部病变患者作为对照组，采用容积再现(VR)、最大密度投影(MIP)、曲面重组(CPR)对Riolan动脉弓进行重建，测量Riolan动脉弓的平均管径，观察其结果与临床资料的关系。结果 (1)无扩张Riolan动脉弓的总体显示率为 23.6%；研究组Riolan动脉弓显示率为 30.1%，平均管径(1.31±0.32) mm，对照组Riolan动脉弓显示率为11.0%，平均管径(1.00±0.13) mm，研究组与对照组的上述指标比较差异均具有统计学意义(P<0.05)；(2)血管性病变Riolan动脉弓显示率为27.9%，平均管径(1.36±0.31) mm，肿瘤性病变Riolan动脉弓显示率为 30.9%，平均管径(1.36±0.42) mm，血管性病变组与肿瘤性病变组患者的上述指标比较差异均无统计学意义(P>0.05)；(3)肠系膜上动脉(SMA)狭窄和闭塞时，Riolan动脉弓平均管径为(1.71±0.22) mm，肠系膜下动脉(IMA)狭窄和闭塞时，Riolan动脉弓平均管径为(1.07±0.08) mm，SMA、IMA狭窄程度与平均管径比较差异均具有统计学意义(P<0.05)。结论 无扩张Riolan动脉弓的显示常提示腹腔内存在肠道病变或肠道供血异常，CTA为临床诊疗方案的选择提供重要的、客观的参考信息。
      【关键词】 无扩张Riolan动脉弓；CT血管成像；肠系膜上动脉；肠系膜下动脉；侧支循环
      【中图分类号】 R445 【文献标识码】 A 【文章编号】 1003—6350（2018）09—1250—04

Manifestations of non-dilated Riolan's arcade on CT angiography and their clinical significance.
ZHAOJian-chun, ZHANG Shen-zhong, JI Guo-jun, DENG Guang-jun. Department of Radiology, Nantong Tongzhou DistrictPeople's Hospital, Nantong 226300, Jiangsu, CHINA
【Abstract】 Objective To investigate the manifestations of non-dilated Riolan's arcade on CT angiography andto analyze their clinical significance. Methods The mesenteric CTA and clinical data of 216 patients admitted to Nan-tong Tongzhou District People's Hospital from July 2014 to August 2017 were retrospectively analyzed, of which 143 pa-tients with abdominal disease were enrolled as study group and 73 patients without abdominal lesions were selected ascontrol group. Volume rendering (VR), maximum intensity projection (MIP), curve plane reformation (CPR) were usedto reconstruct Riolan's arcade, and the average diameter of Riolan's arcade was measured. Results (1) The overall dis-play rate of the non-dilated Riolan's arcade was 23.6%. The display rate and average diameter were 30.1% and (1.31±0.32) mm in the study group, versus 11.0% and (1.00±0.13) mm in the control group (P<0.05). (2) The display rate andaverage diameter of Riolan's arcade in patients with vascular lesions were 27.9% and (1.36±0.31) mm, versus 30.9% and(1.36±0.42) mm in patients with neoplastic lesions (P>0.05). (3) The average diameter of Riolan's arcade was (1.71±0.22) mm when the superior mesenteric artery (SMA) was constricted and occluded versus (1.07±0.08) mm when the in-ferior mesenteric artery (IMA) was constricted and blocked (P<0.05). Conclusion The display of non-dilated Riolan'sarcade often indicates a bowel lesion or abnormal bowel blood supply, providing an important and objective referencefor the selection of clinical protocols.
      【Key words】 Non-dilated Riolan's arcade; CT angiography; Superior mesenteric artery; Inferior mesenteric ar-tery; Collateral circulation·论 著·doi:10.3969/j.issn.1003-6350.2018.09.021