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Sex determination method using the third cervical vertebral body by head and neck CT
Akihiro Ochiai1, Atsushi Iwawaki1, Yusei Otaka2
1Division of Forensic Odontology, Department of Diagnostic and Therapeutic Sciences, Meikai University School of Dentistry, Saitama, Japan.
Journal of Oral Biosciences
|December 29, 2024
Summary
Forensic anthropologists can determine sex using third cervical vertebra volume from CT scans. This method achieved an 80% accuracy rate in classifying sex, aiding identification in skeletal remains.
Area of Science:
- Forensic Anthropology
- Radiology
- Anatomy
Background:
- Sex determination is crucial in forensic anthropology.
- Cervical vertebrae morphology can exhibit sexual dimorphism.
Purpose of the Study:
- To measure third cervical vertebra volume using multi-detector computed tomography (MDCT).
- To develop a sex determination model based on third cervical vertebra volume differences between sexes.
Main Methods:
- Head and neck CT scans of 85 patients were analyzed.
- Three-dimensional image analysis software was used to measure the volume of the third cervical vertebra.
- Binomial logistic regression was performed to create a sex determination model.
Main Results:
- Mean third cervical vertebra volume was significantly higher in males than females.
- The developed sex determination model achieved an 80% correct sex classification rate.
Conclusions:
- Third cervical vertebra volume is a viable metric for sex determination.
- This CT-based method can supplement existing forensic identification techniques.
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