Measuring pelvises in 3D surface scans and in MDCT generated virtual environment: Considerations for applications in the forensic context

Article Article scientifique Article Measuring pelvises in 3D surface scans and in MDCT generated virtual environment: Considerations for applications in the forensic context eng 2023-09-01 2023-11 author Abegg Claudine 0000-0002-9854-9346 814502 author Hoxha Fatbardha 936818 author Campana Lorenzo 884869 author Ekizoglu Oguzhan 0000-0002-0194-595X 932808 author Schranz Sami 909094 author Egger Coraline 752680 author Grabherr Silke 746290 Institut de médecine légale (COLEG) author Besse Marie 0000-0002-4752-9070 28306 Forel Communs (FOREL) author Moghaddam Negahnaz 894070 111813 10.1016/j.forsciint.2023.111813 37742459 0379-0738 https://linkinghub.elsevier.com/retrieve/pii/S0379073823002633 Virtual Anthropology (VA) transposes the traditional methods of physical anthropology to virtual environments using imaging techniques and exploits imaging technologies to devise new methodological protocols. In this research, we investigate whether the measurements used in the Diagnose Sexuelle Probabiliste (DSP) and Ischio- Pubic Index (IPI) differ significantly when 3D models of a bone are generated using 3D surface scans (3DSS) and Multidetector Computed Tomography (MDCT) scans. Thirty pelvises were selected from the SIMON identified skeletal collection. An equal ratio of females to males was sought, as well as a good preservation of the bones. The pelvises were scanned using an MDCT scanner and a 3D surface scanner. The measurements of the DSP and IPI methods on the dry bones (referred to as macroscopic measurements here), and then to the 3D models. The intra- and interobserver, using the Technical Error of Measurement (TEM) and relative Technical Error of Measurement (rTEM) error was assessed, and we aimed to observe if the measurements made on the MDCT and 3DSS generated models were significantly different from those taken on the dry bones. Additionally, the normality of the data was tested (Shapiro-Wilk test) and the differences in measurements was evaluated using parametric (Student t-tests) and non-parametric (Wilcoxon) tests. The TEM and rTEM calculations show high intra and interobserver consistency in general. However, some measurements present insufficient inter- and intraobserver agreement. Student t and Wilcoxon tests indicate potentially significant differences of some measurements between the different environments. The results show that especially in the virtual environment, it is not easy to find the right angle for some of the DSP measurements, However, when comparing the mea- surement differences between dry and virtual bones, the results show that most of the differences are less than or equal to 2.5 mm. Considering the IPI, the landmarks are already difficult to determine on the dry bone, but they are even more difficult to locate in the virtual environment. Nevertheless, this study shows that quantitative methods may be better suited for application in the virtual environment, but further research using different methods is needed. Virtual Anthropology Paleoanthropology Computer Tomography Morphometrics Diagnose Sexuelle Probabiliste Pelvis Computed Tomography 3D Surface Scans Ischio-Pubic Index Collection SIMON Dewey 550 Dewey 614.1 41 Département F.-A. Forel des sciences de l'environnement et de l'eau 153 67 Institut de médecine légale 22A2 false 754 Laboratory of Prehistoric Archeology and Anthropology Forensic science international 352 31e7c39e-8fe0-42a3-b911-fead6e5ca238 Article (Published version) Public Abegg_EtAl_2023_VA_ForensicScienceI.pdf 2243126 application/pdf CC BY-4.0 0ccaea04b25b090972f8dff243db497825322ef035486eaaaf29a9d56ae72e77 0ec1f827-4d90-444e-8032-b9b22898fb6a Supplemental data Public ScienceDirect_files_13Nov2023_16-35.zip 131172 application/zip Supplementary material d3e6b669ec5e1ae8eecfc91118d3e9675e1eb033b22dc2661b3d98a60f23be58 openAccess Faculté des sciences / Section des sciences de la Terre et de l'Environnement / Département F.-A. Forel des sciences de l'environnement et de l'eau Faculté de médecine / Section de médecine clinique / Département de santé et médecine communautaires / Institut de médecine légale

Title	Published in	Year	Views	Downloads

Measuring pelvises in 3D surface scans and in MDCT generated virtual environment: Considerations for applications in the forensic context	Forensic science international	2023	106	106
Old Bones and New technologies in Virtual Anthropology: The reliability of sex estimation methods in virtual environments, and application in archaeology		2023	117	6

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