摘要
目的:探讨CTA评价股骨头动脉血供的临床价值与限度。方法:在AW4.2工作站,对115例非髋关节病变患者的201组股骨头颈部薄层动脉期4排螺旋CT图像进行回顾性3D重建,观察股骨头动脉血供显示情况。结果:CTA显示MCFA、LCFA敏感性为100%,其近段显示较好、中远段显示模糊或未显示;显示RA的敏感性为28.57%(287/1005),仅显示它的始段。适当缩小FOV,极小、极大阈值数值分别选取75～80Hu、250～300Hu,且多角度3DVR旋转、动态观察,对这些血管解剖及毗邻关系显示较好。结论:4排CTA评价股骨头动脉血供临床价值有限。
Objective： To determine preliminary the values and limits of computed tomographic angiography （CTA） in assessment of arterial supplying to the femur head. Methods： Two thousand and one sets of femoral head thin slice CT axial images in arterial phase were retrospectively 3D reconstructed on AW 4.2 workstation. CTA was obtained by using the 4-detector row CT scanning after single-bolus injection of 95 mL contrast media at 4 mL/s from the peripheral vein. Tile supply arteries was observed. Results： The CTA sensitivity of MCFA, LCFA and RA were 100%, 100% and 28.57% respectively. What were depicted clearly on CTA were their origin, main trunk and proximal portion, and their distal portions were not shown clearly. The method of3D VR rotation view, using small FOV and minimal value of 75 - 80 Hu and maximal value of 250 - 300 Hu, gave good visualization of these vascular structures. Conclusion： It was limited for 4-detector CTA to evaluate the arterial supply of femoral head,
出处
《CT理论与应用研究（中英文）》
2011年第4期565-571,共7页
Computerized Tomography Theory and Applications
基金
上海市科委基础研究重点项目(05JC4089)
