双能量CT血管造影在下肢动脉旁路移植术后随访中的应用  

Application of Dual Energy CT Angiography in Follow-up Study of Low Extremity Arteries After Artificial Vascular Graft

作　　者：沈东挥[1] 邹松[1] 陈春霞[1] 罗晓捷[1] 

机构地区：[1]福建医科大学附属协和医院放射科,福建福州350001

出　　处：《中国医学影像学杂志》2012年第9期664-666,668,共4页Chinese Journal of Medical Imaging

摘　　要：目的探讨双能量CT血管造影在下肢动脉旁路移植术后随访中的应用价值。资料与方法 10例下肢动脉旁路移植术后患者接受双源CT双能量血管造影检查,所获得的数据在双能去骨软件中去除钙化及骨质,再在3D软件中进行最大密度投影及容积再现重建,结合原始图像对移植血管进行评价。结果双能量CT血管造影显示10例患者移植血管清晰,管腔通畅,位置及形态正常,连接处以远血流部分恢复,达到临床诊断要求。结论双能量CT血管造影可清晰显示人工移植血管的位置及形态,可作为下肢动脉病变人工血管旁路移植术后随访的检查方法。Purpose To evaluate the diagnostic value of dual energy CT angiography （DE-CTA） in follow-up imaging of low extremity arteries after artificial vascular graft. Materials and Methods DE-CTA was performed in 10 cases with artificial vascular graft in the low extremity artery. Body bone and calcification were removed by using bone remove software. Maximum intensity projection （MIP） and volume rendering （VR） were performed using 3D software, and the assessment of vascular graft was done by combining with the raw images. Results The site and configuration of artificial vessels of l0 cases were clearly displayed, which met the requirement of diagnosis. The artificial vascular lumen was patency, and blood flow of the distance was partly restored. Conclusion DE-CTA can clearly show the position and the conformation of the artificial vascular graft, which can be used as the favorable modality in follow-up study after artificial vascular graft in lower extremity.

关 键 词：体层摄影术 X 线计算机 放射摄影术 双能扫描投影 血管造影术 数字减影 股动脉 腘动脉 髂动脉 血管移植 

分 类 号：R654.3[医药卫生—外科学] R445.3[医药卫生—临床医学]