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The three dimensional spatial relationship between the carotid artery and skull base

Zhang Haizhong,Bu Rongfa,Zhao Hong,et al. Department of Stomatology,General Hospital of PLA,Beijing 100853  
Objective:To compare the normal carotid artery and abnomal carotid artery inskull base via computerized topographic angiography (CTA).Methods:Contrast mediums were administrated intravenously during the three dimensional CT imaging in ten patients with tumor in mandible or neck.Three dimensional CTA imaging were reconstructed compared and analyzed on Easy Vision Workstaion.Results:Stenosis of extenal carotid artery and internal jugular artery were found in five cases.Displacement of the internal carotid artery in three of them was detected.The aneurysm in the left internal carotid artery was clearly located in another case.The images of the cervical vessels (external carotid artery,intemal carotid artery,carotid bifurcation and intemal jugular )of both sides and the skull bass were displayed in arbitrary views without disturbing superposition by cutting,rotating and 3D measurement procedures.Conclusions:Some large cervical tumor could change the position of the carotid artery.CTA was able to display the shape and localization of aneurysm and this could reduce the risk of operation.
【CateGory Index】: R602
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