下肢动脉阻塞性病变多层螺旋CT低剂量扫描成像初探  

Low-Dose Spiral CT Scan Imaging for Lower Extremity Arterial Occlusive Disease

作　　者：薛海林[1] 顾建平[1] 吴前芝[1] 宋进华[1] 吴刚[1] 姜玲[1] 

机构地区：[1]南京医科大学附属南京第一医院放射影像科,江苏南京210006

出　　处：《现代生物医学进展》2011年第14期2671-2673,共3页Progress in Modern Biomedicine

基　　金：国家科技部"十一五"支撑计划项目(2007BAI05B04)

摘　　要：目的:探讨低剂量CT扫描在下肢动脉脉阻塞性病变诊断中的应用价值。方法:选择127段经DSA确诊的不同部位下肢动脉阻塞性病变行低剂量CT扫描,并采用MPR,VR,MIP等重建方法获得各下肢动脉CTA图像,将CTA图像与DSA图像的诊断结果利用统计学软件SAS8.1行加权Kappa一致性检验,检验水准为:Kaapa.系数大于0.75。结果:所得CTA图像与DSA图像诊断结果的一致性检验的kappa系数为0.8058,两种诊断结果的一致性为优。结论:采用低剂量扫描条件获得高质量的CTA图像在下肢动脉阻塞性病变的诊断上有肯定的价值。Objective： To investigate the application value of low-dose CT scanning in lower extremity arterial occlusive disease.Methods： Select 127 segments different parts of lower extremity arterial occlusive disease confirmed by DSA in low dose CT scan,By MPR,VR,MIP reconstruction methods to obtain images of the lower limb CTA,The CTA and DSA image diagnosis using statistical software SAS8.1 consistency test by weighted Kappa,Inspection standards： Kappa coefficient greater than 0.75.Results： CTA and DSA images for the diagnosis obtained the consistency test kappa coefficient 0.8058,the consistency of the two excellent diagnostic results.Conclusion： Low-dose CTA scanning conditions to obtain high quality images in lower extremity arterial occlusive lesions have positive value.

关 键 词：低剂量CT 血管造影术 下肢 动脉 阻塞性病变 

分 类 号：R814[医药卫生—影像医学与核医学]