摘要
目的:探讨64层螺旋CT血管成像术在下肢动脉疾病中的应用价值及技术优势。方法:对21例疑有下肢动脉疾病患者行64层螺旋CT增强扫描,扫描范围从肾动脉水平达足底。薄层重建横断面图像传入Wizard工作站,进行血管三维重建。其中21例结合常规血管造影评价64层螺旋CT血管成像术(CTA)的准确性。结果:在441个动脉节段中,435个节段在CTA与DSA均可以显示,在DSA图像上,狭窄闭塞的节段共130个(轻度狭窄16段,中度狭窄12段,重度狭窄22段,闭塞80段),最大密度投影(MIP)显示中度以上狭窄的敏感性、特异性及准确性分别为:99.1%、99.7%、99.5%。结论:64层CT血管成像是一种高度准确、非侵袭性的成像技术,在评估下肢动脉疾病方面与常规血管造影结果无明显差别,是下肢动脉疾病较好的影像学检查手段。
Objective：To assess the role of 64-slice spiral CT angiography for lower limb arterial diseases and its technique superiority. Methods;28 cases of diseases of lower limb arteries were studied, the helical scans cover renal artery to the artery of the lower extremity. We used Siemens Wizard workstation for 3D reconstruction. And we analyed images with MPR, MIP, VR. In 21 cases, the manifestations of MSCTA were compared with that of conventional angiography. Results： Of the 441 segments,435 were assessable on both DSA and CTA. On DSA images, 130 stenoocclusive segments （16 mild stenosis, 12 moderate stenosis, 22 severe stenosis, and 80 occlusion） were detected. With regard to segments that had more than moderate stenosis, the sensitivity, specificity and accuracy of MIP were 99.1%, 99.7% ,99.5%. Conclusion：The assessment of angiography of diseases of lower limb arteries with 64-slice spiral CT is equal to DSA basically, it is a highly accurate and non-invasive angiography in diagnosing arterial diseases of the lower extremities.
出处
《医学影像学杂志》
2005年第11期988-991,共4页
Journal of Medical Imaging
