JOURNAL OF SHANDONG UNIVERSITY (OTOLARYNGOLOGY AND OPHTHALMOLOGY)

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Imaging anatomy of the sphenoid sinus and optic canal with 3D reconstruction of MS CT

LIU Li-ting,QIUYi-zhou, LIU Dan, WANG Shao-mei,WANG Qi,HAN Zai-wen   

  1. 1.Department of Otolaryngology, Weifang People′s Hospital, Weifang 261041, Shandong, China; 2.Department of Eye, ear, nose and throat, People′s Hospital of Hanting District, Weifang 261100,
  • Received:2006-06-29 Revised:1900-01-01 Online:2006-08-24 Published:2006-08-24
  • Contact: LIU Li-ting

Abstract: To probe into the normal imaging anatomy of the sphenoid sinus and optic canal and its clinical significance. Methods: The sphenoid sinuses and optic canals of 40 normal subjects were examined by MS CT through threedimensional reconstruction method. Results:The length of medial wall, lateral wall ,roof and floor of the optic canal was 12.08±0.62?mm, 10.16±1.73?mm, 9.16±1.17?mm, and 10.24±1.35?mm, respectively. The width and the height of the intracranial opening ,middle portion, and the intraorbital opening of the optic canal was 5.57±0.95 mm and 4.53±0.78mm,4.40±0.67?mm and 4.36±0.67?mm, 5.09±0.85?mm and 5.90±0.98?mm, respectively. The distance between the anterior edge of the nasal columella and the middle portion of sphenoid sinus was 7.08±0.54?cm. The maximum transversal diameter of the sphenoid sinus was 17.83±4.38?mm, the maximum vertical diameter was 18.40±3.76?mm, the maximum sagittal diameter was 23.19±6.73?mm. Conclusions: The imaging anatomy of optic canal and sphenoid sinus could be accurately and easily measured by means of threedimentional reconstruction of MS CT, which is of great value to the nasal endoscopic operation of this area.

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