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目的:应用螺旋CT三维重建技术探讨正常婴幼儿鼻泪管的解剖学特征。方法:应用螺旋CT对27例(54眼)正常婴幼儿和15例(30眼)成人骨性鼻泪管三维重建后,测量骨性鼻泪管长度,鼻泪管长轴与正中矢状切面,水平切面,冠状切面投影的夹角等解剖学数据,同时用解剖学方法测量7例(14眼)儿童尸头骨性鼻泪管长度作对照,应用SPSS13.0软件进行统计学处理。结果:螺旋CT三维重建测量婴幼儿骨性鼻泪管长度为10.06±0.29mm,儿童尸头骨性鼻泪管长度为9.95±0.31mm,成人骨性鼻泪管长度为11.51±1.54mm,前两者之间的差异无统计学意义,而两者与成人鼻泪管长度之间的差异有统计学意义。婴幼儿鼻泪管长轴与正中矢状切面投影的夹角为7.96°±1.62°,与水平切面投影的夹角为73.24°±6.75°,与冠状切面投影的夹角为12.31°±2.03°;成人鼻泪管长轴与正中矢状切面,水平切面,冠状切面投影的夹角分别为8.08°±0.63°,72.69°±3.85°,12.09°±1.21°,两者之间无显著性差异。结论:螺旋CT三维重建技术是测量婴幼儿鼻泪管解剖学数据的一种有效方法,所得解剖学数据对婴幼儿泪道疾病的手术治疗有重要的指导作用。
Objective: To investigate the anatomic characteristics of nasolacrimal duct in normal infants by spiral CT three-dimensional reconstruction. Methods: Spiral CT was used to measure the length of nasolacrimal duct, the length of nasolacrimal duct and the median sagittal plane of nasolacrimal duct after three-dimensional reconstruction of nasal lacrimal duct in 27 cases (54 eyes), normal infants and 15 eyes (30 eyes) , Horizontal section and coronal section projection. The length of nasolacrimal duct in 7 cases (14 eyes) was measured by anatomical method, and SPSS13.0 software was used for statistical analysis. Results: The length of nasolacrimal duct was 10.06 ± 0.29mm, the length of corpse nasolacrimal duct was 9.95 ± 0.31mm, the length of adult nasal lacrimal duct was 11.51 ± 1.54mm, There was no significant difference between the two groups and the length of nasolacrimal duct between the two groups. The angle between the nasolacrimal duct long axis and the median sagittal section projection is 7.96 ° ± 1.62 ° and the angle with the horizontal section projection is 73.24 ° ± 6.75 ° and the angle with coronal section projection is 12.31 ° ± 2.03 ° ; The included angles of adult nasolacrimal duct long axis and median sagittal section, horizontal section and coronal section projection were 8.08 ° ± 0.63 °, 72.69 ° ± 3.85 ° and 12.09 ° ± 1.21 °, respectively, with no significant difference between the two . Conclusion: Three-dimensional reconstruction of spiral CT is an effective method to measure the anatomic data of nasolacrimal duct in infants and young children. The anatomical data obtained from this study have important guiding significance for the surgical treatment of lacrimal duct disease in infants.