目的 探索准确测量眶缘曲面面积的新方法。方法 入选NF1患者26例,对两侧眼眶进行CT扫描并三维成像,按照近似的冠状平面测量法和三维测量法得出眶缘面积,对所得数据进行统计学分析。结果 平面测量法的数据都偏小于三维测量方法,统计学上有显著差异。结论 眶缘面积三维测量法简单易操作,结果准确稳定,可以替代冠状面测量眶缘面积的方法。

Objective To explore a more accurate method in the area measurement of curved surface such as orbital rim. Methods Twenty-six NF1 patients were acquired. CT scan on both sides of the orbit and 3D reconstruction were completed. The orbital rim area was measured in approximate coronal plane and 3D curved plane respectively. The data were statistically analyzed. Results On average, the data of the plane method were underestimated, compared with the 3D method. There was statistical difference between the two groups. Conclusion The measurement in 3D curved plane is accurate, stable and easy to operate, which can replace the measurement in approximate coronal plane.