CT片观察指标分析在新旧眶内壁骨折鉴别中的应用  

The discriminant analysis of the CT observation indicators for the fresh degree of medial orbital wall blow-out fracture

作　　者：刘莹[1] 张鑫[1] 高晓东[1] 封华[1] 卞晶晶[1] 

机构地区：[1]北京市公安局法医检验鉴定中心,北京100192

出　　处：《中国法医学杂志》2015年第5期485-487,共3页Chinese Journal of Forensic Medicine

摘　　要：目的筛选骨折影像学检验CT片上的观察指标,建立新旧眶内壁骨折的鉴别方法。方法收集70例新鲜和51例陈旧性爆裂性眶内壁骨折CT影像学资料,筛选出与新旧骨折相关的8项指标,使用SPSS 13.0软件对各指标进行分析,建立单一指标判别方程;根据分析结果,剔除准确率低的观察指标。再使用SPSS 13.0软件逻辑回归分析的方法,建立多指标综合判别方程,并进行准确性验证。结果各单一指标方程验证结果显示,综合判别准确率最高为95.9%,最低为57.9%,剔除准确率最低的两个指标后建立两个多指标判别方程,经验证,方程(1)判别准确率为99.2%(χ2=124.382,P=0.000),方程(2)判别准确率为95.0%(χ2=159.339,P=0.000)。结论利用CT片上的形态学指标,建立相关判别方程式,可有效鉴别新旧爆裂性眶壁骨折。联合使用多指标的判别方程,结果更准确。Objective This research was aimed to establish a function to identify the fresh medial orbital wall blow-out fracture using the CT characteristics. Methods After observation of CT characteristics of 70 patients with fresh medial orbital wall blow-out fracture and 51 patients with dated fracture,eight indicators were selected for analysis. Discriminate analysis was carried out among the eight indicators,and the one with lowest accuracy rate would be eliminated. And the other indicators were used to establish a multivariate discriminate function. Results The highest accuracy rate in the discriminate analysis was95. 9% and the lowest one was 57. 9%. After eliminating the two less accurate indicators,two functions with multiple indicators were established. The accuracy rate of two functions were 99. 2%（ χ2= 124. 382,P = 0. 000） and 95. 0%（ χ2= 159. 339,P = 0. 000）,respectively. Conclusion The discriminate functions based on the CT observation indicators were effective to discriminate the fresh medial orbital wall blow-out fracture. And the multivariate functions was more accurate.

关 键 词：法医临床学 爆裂性眶内壁骨折 CT 鉴别 

分 类 号：D919[医药卫生—法医学]