64排螺旋CT三维重建技术在鼻背缩窄截骨术中的应用

Application of 64-slice spiral CT 3D reconstruction technique in the nasal dorsum narrow osteotomy

目的:探讨64排螺旋CT三维重建技术在鼻背缩窄截骨术中的应用价值。方法:收集实施鼻背缩窄截骨术并出现及未出现鼻泪管损伤的患者各20例,分别作为观察组及对照组,应用64排螺旋CT三维重建技术检测2组患者骨性鼻泪管长度、鼻泪管内壁厚度、鼻面角度、鼻泪管长轴与矢状切面投影夹角、鼻泪管长轴与水平切面夹角、鼻泪管长轴与冠状切面夹角,并对比分析。结果:观察组患者应用64排螺旋CT三维重建技术检出骨性鼻泪管长度为(11.58±1.23)mm,鼻泪管内壁厚度为(1.25±0.36)mm,鼻面角度为(128.51±5.65)°,鼻泪管长轴与矢状切面投影夹角为(8.63±0.38)°,鼻泪管长轴与水平切面夹角为(73.81±3.26)°,鼻泪管长轴与冠状切面夹角为(12.25±0.69)°,均明显高于对照组(P<0.01)。结论:术前64排螺旋CT三维重建技术鼻泪管测量,能精确指导鼻背缩窄截骨术安全操作,具有重要临床意义。

Objective ：To explore the application value of 64-slice spiral CT 3D reconstruction technique in the nasal dorsum narrow osteotomy. Methods：Twenty nasolacrimal duct injury patients and 20 non-nasolacrimal duct injury treated with the nasal dorsum narrow osteotomy were divided into the observation group and control group. The nasolacrimal duct length, nasolacrimal duct wall thickness, nose angle, projection angle between nasolacrimal tube axial and sagittal section, angle between nasal length axis and horizontal plane and angle between nasolacrimal tube axial and coronal plane in two groups were detected using the 64-slice spiral CT 3D the 64-slice spiral CT 3 D reconstruction, and analyzed. Results：The detection of 64-slice spiral CT 3D reconstruction showed that nasolacrimal duct length, nasolacrimal duct wall thickness, nose angle, projection angle between nasolacrimal tube axial and sagittal section, angle between nasal length axis and horizontal plane and angle between nasolacrimal tube axial and coronal plane in observation group were（ 11.58 ± 11.58 ） mm, （ 1.25 ± 0.36 ） mm, （ 128.51 ± 5.65 ） °, （ 8.63 ± 0.38 ） °, （73.81 ± 3.26 ） ° and （ 12.25 ± 0.69 ） °, respectively, which was significantly higher than those in control group（P 〈 0.01 ）. Conclusions：The preoperative measurement of nasolacrimal duct with 64- slice spiral CT 3D reconstruction technique can accurately guide the nasal dorsum osteotomy,which has important clinical significance.