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《CT Theory and Applications》 2011-04
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CT Angiography in Assessment of Arterial Supply of the Femoral Head

YANG Xiu-jun,CHEN Fu-rong,LI Wei (Department of Radiology,Shanghai Eighth People's Hospital,Shanghai 200235,China)  
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.The 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 of 3D 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.
【Fund】: 上海市科委基础研究重点项目(05JC4089)
【CateGory Index】: R816.8
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