64层螺旋CT血管造影诊断肾脏动静脉瘘18例分析

Diagnosis of renal arteriovenous fistulas by using 64-slice spiral CT angiography: 18 cases analysis

目的探讨肾脏动静脉瘘(renal arteriovenous fistulas,r AVF)的CT血管造影(CT angiography,CTA)征象,以减少误诊及漏诊。方法分析18例经数字减影血管造影技术(digital substraction angiography,DSA)确诊的r AVF患者的CTA影像学资料,所有扫描图像均进行容积再现(VR)、多平面重建(MPR)、最大密度投影(MIP)和曲面重建(CPR)等后处理。结果 18例r AVF共发现18个病灶,检查结果与DSA相符。CTA均清晰显示供血动脉、引流静脉及畸形血管团,其中8例清楚显示肾动脉与静脉间的瘘口。结论 r AVF具有典型的CTA征象,CTA检查可以提供可靠的无创性诊断依据。

Objective To analyze the image features of CT angiography（ CTA） of renal arteriovenous fistulas（ rAVF） in order to reduce the misdiagnosis and missed diagnosis.Methods The CTA images of 18 patients with rAVF that was confirmed by digital substraction angiography（ DSA） were retrospectively analyzed.All the images were post processed in volume rendering（ VR） ,multipla-nar reconstruction （ MPR ） , curved planar reformation （ CPR ） and＆nbsp;maximum intensity projection（ MIP） .Results Eighteen foci were detected in the 18 patients with rAVF,which were consistent with the results of DSA.CTA clearly displayed the feeding artery,draining vein and mass of malformed vascular.The renal artery and vein fistula were clearly shown in 8 foci.Conclusion rAVF has typical signs of CTA which may provide a noninvasive and reliable diagnosis for the disease.