目的 研究磁共振血管成像(MRA) 与CT血管成像(CTA)在诊断腹部内脏动脉 瘤(VAAs)中的应用价值。方法 选取2013 年6月至2018年6月我院同时行MRA和CTA 检查的104例疑似VAAs患者临床资料进行 回顾性分析，比较两种检查方法对不同 大小病灶以及瘤壁钙化、瘤内血栓、瘤 体带蒂等病理特征检出率，并以CTA检 查结果为“金标准”，分析MRA诊断价 值。结果 104例患者中确诊VAAs患者79 例(75.96%)，共检出VAAs病灶95枚，其中 MRA确诊73例(87枚)，灵敏度为92.41%， 特异度为92.00%，准确率为92.31%，与 CTA相比Kappa值为0.800，具有良好一致 性，且MRA与CTA对不同类型VAAs诊断结 果差异无统计学意义(P>0.05)；MRA测量 VAAs病灶平均直径大于CTA，对瘤壁钙 化检出率低于CTA，差异有统计学意义 (P<0.05)；结论 MRA对微小病灶和瘤壁钙 化显示效果较为欠缺，但诊断准确率与 CTA检查一致性良好，因此两种检查均可 作为内脏动脉瘤有效检查方法。

Objective To study the application value of magnetic resonance angiography (MRA) and CT angiography (CTA) in the diagnosis of abdominal visceral arteryaneurysms (VAAs). Methods The clinical data of 104 patients suspected as VAAs who underwent MRA and CTA in our hospital from June 2013 to June 2018 were retrospectively analyzed. Thedetection rates of pathological features of different sizes of lesions, tumor wall calcification, intratumoral thrombosis and tumor pedicle were compared between the two methods. The results of CTA test were taken as gold standards, and the diagnostic value of MRA was analyzed. Results Among 104 cases of patients, 79 cases (75.96%) were diagnosed with VAAs, and a total of 95 VAAs lesions were detected, and 73 cases (87 lesions) were diagnosed by MRA, and the sensitivity, specificityand accuracy rate were 92.41%, 92.00% and 92.31%. Compared with CTA, its Kappa value was 0.800 and it has good consistency, and there were no significant differences between MRA and CTA in the diagnosis of different types of VAAs (P>0.05). The average diameter of VAAs lesions by MRA was larger than that of CTA, and the detection rate of tumor wallcalcification was lower than that of CTA (P<0.05). Conclusion MRA is less effective in displaying small lesionsand tumor wallcalcification, but its diagnostic accuracy is in good consistency with CTA. Therefore, the two methods can be used as effective methods for visceral artery aneurysms.