鼻背缩窄截骨术中泪道系统的三维重建研究

Application of 128 slice spiral CT 3D reconstruction in dorsum narrow osteotomy

目的:探讨128层螺旋CT三维重建技术在鼻背缩窄截骨术中的应用价值。方法:收集2014-01-2015-06期间实施鼻背缩窄截骨术并出现鼻泪管损伤的患者及健康体检成人各20例,分别设为观察组及对照组。应用128层螺旋CT三维重建技术对2组泪囊的最大前后径及左右径、泪囊顶底距离、骨性鼻泪管长度、鼻泪管内壁厚度、鼻额角、中鼻甲腋到泪囊顶底的距离进行比较。结果:观察组患者的骨性鼻泪管长度为(11.58±1.23)mm,鼻泪管内壁厚度为(1.25±0.36)mm,泪囊的最大前后径为(0.89±0.14)cm,泪囊的最大左右径为(0.66±0.06)cm,泪囊顶底距离为(1.85±0.04)cm,与对照组相比均差异有统计学意义(均P<0.05)。结论:应用128层螺旋CT三维重建技术对鼻背缩窄截骨术患者的泪道系统进行检测,不仅可以有效预防术后泪道系统损伤,而且对术后泪道系统损伤的诊断具有重要的参考价值。

Objective：To explore the value of 128 slice spiral CT 3D reconstruction in dorsum narrow osteotomy. Method：Twenty cases of nasolacrimal duct injury patients were collected from January 2014 to June 2015 as observation group; and other 20 cases healthy adults were for control group. Maximum anteroposterior diameter and left-right diameter of lacrimal sac, distance of top and bottom of lacrimal sac, the nasoiacrimal duct length, nasolacrimal duct wall thickness, nasofrontal angleand the distance of middle turbinate to the top and bottom of the lacrimal sac were analyzed by 128 slice spiral CT 3D reconstruction. Result： In the observation group, the duct length was（11. 58±11.58）mm,and nasolacrimal duet wall thickness was（1.25±0.36）mm. Maximum anteroposterior diameter of lacrimal sac was（0.89 ±0.14）cm, and left-right diameter of lacrimal sac was（0.66 ±0.06）cm. The distance of top and bottom of lacrimal sac was（1.85±0.04）era. All the parameters were statistically significant compared with the control group（P〈0.05）. Conclusion：The application of 128 slice spiral CT 3D reconstruction in dorsum narrow osteotomy of lacrimal duet system, not only could efficiently prevent postoperative lacrimal duct system damage, but also has important reference value in the diagnosis of postoperative lacrimal duct system damage.