The study of the cervical identiifed on CT iflm / 中国法医学杂志

ABSTRACT

Objective Selected the characteristic index of cervical CT tablets, and established stepwise regression equation, to explore the value of its application in forensic medicine identification. Method Each one cervical CT images of 130 cases were collected, 70 subjects were examined for 2 cervical CT images of each. Selected and measured 13 indicators of cervical CT iflms, the difference between the groups was calculated by the same measurement indicators after the random grouping of the inspectors, and the difference between the different measurement indexes of the same person. Using two classification logistic Stepwise regression analysis, establish the regression equation of the index and multiple regression equation of multinomial index, and the test of the equation was carried on blind test. Results Accuracy of 13 equations of the established element is 69.0%~90.4%,accuracy of 4 multiple regression equation is 90.4%~96.7%, blind accuracy rate is 100%. Conclusion 13 feature indicators selected from CT tablets can be used for the same identiifcation, in practice researchers should use multivariate index to get more accurate result.