Virtual Determination of Sex:Estimating Cut off Value of Digital Metric Traits of Foramen Magnum on Three-dimensional Computed Tomography with Receiver Operating Characteristic and Logistic Regression Analysis

作     者：Harish Kumar S Agarwal Pardaman Singh Setia Suryamani Pandey 

作者机构：Department of Forensic Medicine and ToxicologyMaharaja Agrasen Medical CollegeHisarHaryanaIndia Department of RadiodiagnosisMaharaja Agrasen Medical CollegeHisarHaryanaIndia Department of Community MedicineMaharaja Agrasen Medical CollegeHisarHaryanaIndia 

出 版 物：《Journal of Forensic Science and Medicine》 (法庭科学与法医学杂志（英文）)

年 卷 期：2021年第7卷第1期

页      面：1-8页

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

主　　题：Binary logistic regression analysis foramen magnum sex determination three-dimensional multi-detector computed tomography volume rendering technique 

摘      要：Background:Radiological imaging plays a pivotal role in forensic *** have the imaging techniques advances,so have the digital skeletal measurements inched towards *** trends of the population keep on changing in modem ***,finding the precise technique of bone measurement,with greater reproducibility,in modem population is always needed in making population specific biological *** and Objective:The aim of this study was to estimate the accuracy of the foramen magnum measurement,obtained by three dimensional multi-detector computed tomography using volume rendering technique with the cut off value of each variable,in sex determination of an *** and Methods:Two metric traits,an antero-posterior diameter(APD)and transverse diameter(TD),were measured digitally in an analysis of 130 radiological images having equal proportion of male and female *** magnum index and area of foramen magnum(Area by Radinsky s[AR],Area by Teixeira5s[AT])were derived from APD and ***:Descriptive statistical analysis,using unpaired t-test,showed significant higher value in males in all the *** Pearson correlation analysis,maximum correlation was observed between area(AT and AR r=0.999)and between area and TD(AR r=0.955 and AT r=0.945 respectively).When used individually,TD had the highest predictive value(67.7%)for sex detennination among all the parameters followed by AT(65.4%)and AR(64.6%).Cutoff value of variables TD,AR and AT were 29.9 mm,841.80 mm2 and 849.70 mm2 *** operating characteristic curve predicted male and female sex with 96.2%and 89.2%accuracy *** overall accuracy of the model was 92.7%.Conclusion:Measurements from 3D CT using volume rendering technique were precise,and the application of logistic regression analysis predicted the sex with more accuracy.