目的探讨薄层高分辨CT（High Resolution Computed Tomography, HRCT）及三维(3D)重建技术对视神经管骨 折的诊断价值。方法 回顾性分析41例临 床或CT确诊为视神经管骨折患者的眼眶常 规CT、视神经HRCT及三维重建后处理结 果，分别比较常规CT和HRCT以及HRCT和三 维重建后处理技术对视神经管骨折的显 示率。结果 41例患者经常规CT扫描发现 视神经管骨折11例(26.8%)；HRCT扫描发 现视神经管骨折32例(78.0%)；三维重建 后处理发现视神经管骨折39例(95.1%)。 前组图像二者对骨折显示率有明显差异 (P<0.05) ,后组图像二者对骨折显示率无 明显差异(P＞0.05)。结论 HRCT结合三维 后处理技术能够有效的提高视神经管骨折 的诊断率，指导临床治疗。

Objective The purpose of this study is to explore the diagnostic accuracy of the fracture of optic canal using HRCT and 3D reconstruction. Methods 41 patients with fracture of optic canal were enrolled in our study and who have undergone routine CT, HRCT and 3D reconstruction. The point of the study is to analysis the diagnostic accuracy of the fracture of optic canal among the methods of routine CT, HRCT and 3D reconstruction. Results In all the patients, 11 cases (26.8%) were diagnosed the fracture of optic canal by using routine CT, 32 cases (78.0%) by HRCT and 39 cases (95.1%) by 3D reconstruction. There are significant differences between routine CT and HRCT ( P<0.05). However, HRCT is no significant difference 3D reconstruction for diagnosing the fracture of optic canal (P＞0.05). Conclusion HRCT and 3D reconstruction could significantly improve the diagnostic accuracy of the fracture of optic canal. Therefore, HRCT and 3D reconstruction may play a crucial role for diagnosing the fracture of optic canal.