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International Journal of Legal Medicine

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01-03-2020 | Computed Tomography | Original Article

Sex estimation in the cranium and mandible: a multislice computed tomography (MSCT) study using anthropometric and geometric morphometry methods

Authors: Claudia Gillet, Leonor Costa-Mendes, Camille Rérolle, Norbert Telmon, Delphine Maret, Frédéric Savall

Published in: International Journal of Legal Medicine | Issue 2/2020

Abstract

Introduction

The purpose of this study was to analyze the respective contribution of the skull and mandible to sex estimation in an entire cranium using metric and geometric morphometric methods and multislice computed tomography (MSCT) analysis.

Materials

The study sample comprised 120 individuals aged 23 to 84 years and divided into three groups (whole sample and over or under 40 years of age).

Methods

Forty-eight osteometric landmarks were positioned using Osirix®, 34 for the cranium and 14 for the mandible. The data were analyzed using univariate analyses and logistic regression using backward stepwise selection with cross-validation of the classification results. Generalized procrustes analysis (GPA) was used, and Goodall’s F test and Mahalanobis D² matrices allowed an assessment of statistical significance.

Results

The classification accuracy of cranium models ranged from 87% to 88.3%, and from 68% to 81.4% for the mandibular models. With geometric morphometry, accuracy was of 94–100% for the cranium and 84.2% for the mandible.

Discussion

We conclude that the mandible had a higher accuracy rate for individuals over 40 years than individuals under 40 years of age, although the accuracy of geometric morphometry did not differ significantly between the age groups. The cranium, however, presented greater predictability for all the parameters assessed.

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Title: Sex estimation in the cranium and mandible: a multislice computed tomography (MSCT) study using anthropometric and geometric morphometry methods
Authors: Claudia Gillet
Leonor Costa-Mendes
Camille Rérolle
Norbert Telmon
Delphine Maret
Frédéric Savall
Publication date: 01-03-2020
Publisher: Springer Berlin Heidelberg
Keywords: Computed Tomography
Computed Tomography
Published in: International Journal of Legal Medicine / Issue 2/2020
Print ISSN: 0937-9827
Electronic ISSN: 1437-1596
DOI: https://doi.org/10.1007/s00414-019-02203-0

ACC 2024 Congress

Springer Medicine

Sex estimation in the cranium and mandible: a multislice computed tomography (MSCT) study using anthropometric and geometric morphometry methods

Abstract

Introduction

Materials

Methods

Results

Discussion

ACC 2024 Congress

Springer Medicine

Abstract

Introduction

Materials

Methods

Results

Discussion

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