CAJ | 학술논문

目的：探讨多层螺旋 CT 血管成像(MSCTA)与 DSA 对下肢动脉硬化闭塞症诊断价值的差异。方法对41例下肢动脉硬化闭塞症患者，先后行下肢动脉 MSCTA 和 DSA 检查，两者检查间隔不超过2周。以 DSA 为金标准，对比分析 MSCTA 与 DSA对下肢动脉各节段动脉狭窄程度、狭窄或闭塞周围侧支的显示。结果 MSCTA 与 DSA 在下肢动脉狭窄(≥50%)、狭窄或阻塞病变周围的代偿侧支血管的显示能力上无明显差异。MSCTA 诊断下肢动脉狭窄(≥50%)的敏感度为97.2%，特异度为98.2%，诊断符合率93.8%，阳性预测值94.6%，阴性预测值98.2%。结论下肢动脉 MSCTA 对下肢动脉硬化闭塞症的诊断具有较高的敏感度和特异度，能有效指导其治疗方案的选择。
목적：탐토다층라선 CT 혈관성상(MSCTA)여 DSA 대하지동맥경화폐새증진단개치적차이。방법대41례하지동맥경화폐새증환자，선후행하지동맥 MSCTA 화 DSA 검사，량자검사간격불초과2주。이 DSA 위금표준，대비분석 MSCTA 여 DSA대하지동맥각절단동맥협착정도、협착혹폐새주위측지적현시。결과 MSCTA 여 DSA 재하지동맥협착(≥50%)、협착혹조새병변주위적대상측지혈관적현시능력상무명현차이。MSCTA 진단하지동맥협착(≥50%)적민감도위97.2%，특이도위98.2%，진단부합솔93.8%，양성예측치94.6%，음성예측치98.2%。결론하지동맥 MSCTA 대하지동맥경화폐새증적진단구유교고적민감도화특이도，능유효지도기치료방안적선택。
Objective To discuss the value of multi-slice spiral CT angiography (MSCTA)and digital subtraction angiography (DSA)in lower extremity arteriosclerosis obliterans.Methods MSCTA and DSA of lower extremity arteries were performed in 41 patients with lower extremity arteriosclerosis obliterans sequentially.The interval of these two examinations was no more than 2 weeks.DSA served as the reference standard and compared with MSCTA in terms of grading of stenoocclusive lesions,visualization of collaterals in lower extremity arteries.Results No significant differences of grading of stenoocclusive lesions,visualization of col-laterals were observed between MCTA and DSA in lower extremity arteries.Compared with the results of DSA,the sensitivity,spe-cificity,accuracy,positive and negative predictive value of MSCTA in the detection of arterial stenosis (≥ 50%)were 97.2%, 98.2%,93.8%,94.6%,98.2%,respectively.Conclusion MSCTA shows relatively high sensitivity and specificity in the diagnosis of lower extremity arteriosclerosis obliterans,can provide effective guidance of planning treatment in lower extremity arteriosclerosis obliterans.