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Three dimensional reconstruction study of multi-slice helical CT imaging on optic canal area

LI Zhihai~1 GAO Qixue~2 CAI Zhiyi~1 TAO Baohong~1 L Jingyao~1(~1Department of Otolaryngology, Taizhou Municipal Hospital,Taizhou, 318000,China;~2Depar-tment of Otolaryngology ,Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology)  
Objective:To investigate the accuracy and clinical application of multi-slice spiral CT imaging on optic canal area.Method:Forty intact specimens of human corpse head were tested with three dimensional reconstruction of multi-slice spiral CT imaging. The results of radiology and anatomy were compared on adjacent structures of optic canal interior wall and its developmental relationship with sphenoid sinus.Result:①The high spatial resolution of integrity could be obtained with dimensional processing technique.The anatomical structure of optic canal and its surrounding area could be demonstrated clearly. ②With the technique of virtual endoscopy, the interior reconstruction of optic canal could demonstrate the inner topography of optic canal, the reconstruction image of which was identical to that of the control subjects. ③There was no significant difference between the data of multi-slice spiral CT imaging and that of anatomy(P0.05).Conclusion:Associated application of dimensional processing technique and virtual endoscopy, not only can the subtle structures of optic canal be demonstrated and measured, but also the detailed information on spatial relationships of optic canal area can be provided for operation.
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