摘要
目的:明确枕骨基底部低密度影的形成机理及其与舌下神经管的关系。方法:采用40侧矢状切正常成人颅的横切面标本和84例在门诊行颅底扫描者的正常CT片。结果:枕骨基底部骨松质发育不良区及其影像表现以椭圆形为常见。在骨标本上测得骨松质发育不良区长9.5±2.9mm,宽6.4±3.1mm,高5.4±1.8mm。指出了在CT图像上区分枕骨基底部发育不良影和舌下神经管影的方法。结论:枕骨基底部低密度影系枕骨基底部骨松质局部发育不良所致。
bjective:To understand the formation of lowdensity occipital basis transparent image and its relation to hypoglossal canal.Methods:CT transparent image of the occipital basis was studied on 40 sides of sagittalcut adult skull specimens (male 20, female 20) and 84 normal skulls (male 50,female 34)which was combined with cross section of the occipital basis. Results:The rate of maldeveloped cancellous bone in the occipital basis is 42.5%.The shape of the maldeveloped part is mainly elliptical with a size about 9.5±2.9 mm to 6.4±3.1 mm to 5.4±1.8 mm.Conclusion:Lowdensity transparent image in the occipital basis is due to maldeveloped canellous bone in the region.
出处
《中国临床解剖学杂志》
CSCD
北大核心
1998年第2期141-142,共2页
Chinese Journal of Clinical Anatomy