Quantification of perspective-induced shape change of clavicles at radiography and 3D scanning to assist human identification

Stephan, Carl N. and Guyomarc'h, Pierre (2014) Quantification of perspective-induced shape change of clavicles at radiography and 3D scanning to assist human identification. Journal of Forensic Sciences, 59 2: 447-453. doi:10.1111/1556-4029.12325


Author Stephan, Carl N.
Guyomarc'h, Pierre
Title Quantification of perspective-induced shape change of clavicles at radiography and 3D scanning to assist human identification
Journal name Journal of Forensic Sciences   Check publisher's open access policy
ISSN 0022-1198
1556-4029
Publication date 2014-03-01
Year available 2013
Sub-type Article (original research)
DOI 10.1111/1556-4029.12325
Open Access Status Not yet assessed
Volume 59
Issue 2
Start page 447
End page 453
Total pages 7
Place of publication Hoboken, NJ, United States
Publisher Wiley-Blackwell
Language eng
Abstract Change in perspective between antemortem and postmortem imaging sessions (radiograph to radiograph and surface scan to radiograph) may cause different 2D renderings of the same osseous element complicating comparisons for identification. In this study, clavicle shape changes due to radiographic positioning and 3D laser scanning were examined in 20 right-side specimens, as pertinent to chest radiograph comparisons. Results indicate substantial changes in clavicle form with short source-to-image receptor distance, elevation of the element from the image receptor, and movement of the element away from the center beam (10% mean square for shape). Although quantitative shape differences were small when the clavicle was in close opposition to the image receptor (3% mean square), important qualitative differences remained with large distances from the center beam (e.g., conoid tubercle presence/absence). The significance of these results for image superimposition and computer-automated-shape-based searches of radiographic libraries to find matching candidates is discussed.
Keyword Deformation grid
Distortion
Forensic anthropology
Forensic science
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Biomedical Sciences Publications
 
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