西南地区汉族男性CT颅面径线与身高的关系

Relationship between Body Height and Craniofacial Lines Measured by CT in Southwest Han Males

目的通过CT测量西南地区汉族男性颅面径线，建立该地区汉族男性颅面径线与身高的回归模型，为法医人类学研究积累数据。方法收集273例西南地区汉族男性头部CT资料，确定颅面部7条径线，运用图像后处理软件进行多平面重建和容积再现，对所选径线进行测量。对各测量指标与身高的相关性运用SPSS21．0进行分析，建立推断身高的回归方程，并重新选取50例样本代入该数学模型进行检验。结果建立了7条径线的线性回归方程（P〈0．05）;一元线性回归方程相关系数为0．190～0．439，标准估计误差（SEE）为4．597～5．023cm；多元线性回归方程复相关系数为0．494～0．524，SEE为4．418-4．458cm。回代检验得y=83．959＋3．589x6＋2．57322，±1SEE准确率最高，为30％；y=72．646＋3．31626＋1．586x2＋1．553x4＋2．211x3，±2SEE准确率最高，为92％。结论本研究所选取的7条径线与身高均有明显的直线相关性，所建立的多元回归方程适用于推断西南地区汉族男性身高。

Objective To establish regression model between craniofacial lines and body height by measuring craniofacial lines in Southwest Han males using CT and to accumulate data for the study of forensic anthropology. Methods Head CT data of 273 Han males in Southwest were collected and 7 craniofacial lines were determined. Multiplanar reconstruction and volume rendering were performed by image post-processing software and the selected lines were measured. The relationship between each measuring indicator and body height was analyzed using SPSS 21.0 soitware. The regression equation of body height estimation was established and 50 samples were selected again and put into the mathematics models to verify its accuracy. Results The linear regression equations of 7 lines were established （P〈0.05）. The correlation coefficients of the unary linear regression equations were 0.190-0.439 and the standard errors of the estimate （SEE） were 4.597-5.023 cm. The correlation coefficients of the multiple linear regression equation were 0.494-0.524 and the SEE were 4.418-4.458cm. The return tests showed that the highest ±1 SEE accuracy of the multiple regression equation： y=83.959＋3.589 x6＋2.573 x2, were 30%; and the highest ±2SEE accuracy of the multiple regression equation： y=72.646＋3.316x6＋1.586x2＋1.553 x4＋2.211 x3, were 92%. Conclusion There is significant linear correlation between 7 selected lines and the stature in this study, and the plural linear regression equation established could be applied for estimating the stature of Southwest Han males.