计算机辅助技术测量眼眶容积的实验研究

Experimental study of orbital volume using computer assissted technology

目的:提出一个基于螺旋CT测量眼眶容积简单有效的方法,验证Simplant软件测量眼眶容积的准确性。方法:选用5个头颅骨骼标本进行螺旋CT扫描,数据以DICOM格式刻录存盘,用Simplant软件读取数据,并进行眼眶容积测量,同时用量筒法测量眼眶容积。采用SAS6.12软件包对数据进行配对t检验,验证该方法的可靠性。结果:Simplant软件测得平均眼眶容积为(28.81±1.65)ml,量筒法为(28.82±1.65)ml,两者无显著差异(P=0.987)。2种方法相关分析,r=0.971,P<0.001,具有显著相关性。结论:Simplant软件测量眼眶容积是一种简单准确的方法。

PURPOSE： To evaluate the accuracy of the Simplant analytic software for orbital volumetric measurement. METHODS： The volume of 10 orbits from 5 skulls was evaluated with the Simplant analytic software, and compared with the volume obtained by direct measurement using the water displacement method. The accuracy of volume measurement using Simplant software was assessed statistically by paired t test with SAS6.12 software package. RESULTS： The mean volume was found to be （28.82±1.65）ml by direct impression and （28.81±1.65）ml by the Simplant analytic software. There was no significant difference between the two methods （P〉0.05）. The correlation between the techniques was found to be high （r=0.971）. CONCLUSION： The Simplant analytic software for orbital volumetric measurement is a simple and accurate method. Supported by Shanghai Leading Academic Discipline Project （Grant No.Y0203）.