Sex estimation from the hyoid bone measurements in an adult Eastern Turkish population using 3D CT images, discriminant function analysis, support vector machines, and artificial neural networks☆.

Journal: Legal medicine (Tokyo, Japan)
PMID:

Abstract

The hyoid bone is one of the bones in the human body that shows sexual dimorphism. The anthropological and anthropometric characteristics that determine sexual dimorphism are influenced by demographic differences. The aim of this study was to investigate the rate of sexual dimorphism of the hyoid bone in the adult Eastern Turkish population from the examination of the 3D computed tomography images of 240 patients, using discriminant function analysis (DFA), support vector machines (SVM), and artificial neural networks (ANN). These evaluations were based on eight hyoid measurements that have been frequently used in previous CT studies. The results showed that all eight measurements were higher in males than in females (p = 0.000). It was determined that sex could be estimated accurately at up to 93.3 % using DFA, 93.8 % using SVM and 95.4 % using ANN. The maximum accuracy rate achieved to 94.2 % in males using SVM, and 95.8 % in females using ANN. These high rates of sexual dimorphism found using DFA, SVM, and ANN in this study indicate that characteristics of the hyoid bone can be utilized to determine sex in the Eastern Turkish population.

Authors

  • Gizem Demet Mutlu
    Council of Forensic Medicine, Istanbul, Turkey. Electronic address: gizem.demet.mutlu@atk.gov.tr.
  • Mahmut Asirdizer
    Department of Forensic Medicine, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey. Electronic address: mahmutasirdizer@yyu.edu.tr.
  • Erhan Kartal
    Head of Forensic Medicine Department, Medical Faculty of Van Yuzuncu Yil University, Van, Turkey. Electronic address: erhankartal@yyu.edu.tr.
  • Siddik Keskin
    Department of Biostatistics, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey. Electronic address: skeskin@yyu.edu.tr.
  • İsmail Mutlu
    Council of Forensic Medicine, Istanbul, Turkey. Electronic address: ismail_mutlu@atk.gov.tr.
  • Cemil Goya
    Head of Radiodiagnostic Department, Medical School of Van Yuzuncu Yil University, Van, Turkey. Electronic address: cemilgoya@yyu.edu.tr.