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Synthesizing dental radiographs for human identification

S. Tohnak ; Andrew Mehnert (Institutionen för signaler och system) ; M. Mahoney ; S. Crozier
Journal of Dental Research (0022-0345). Vol. 86 (2007), 11, p. 1057-1062.
[Artikel, refereegranskad vetenskaplig]

The task of identifying human remains based on dental comparisons of post mortem (PM) and ante mortem (AM) radiographs is labor-intensive, subjective, and has several drawbacks, including: inherently poor image quality, difficulty matching the viewing angles in PM radiographs to those taken AM, and the fact that the state of the dental remains may entirely preclude the possibility of obtaining certain types of radiographs PM. The aim of the present study was to investigate the feasibility of using radiograph-like images reconstructed from PM x-ray computed tomography (CT) data to overcome the shortcomings of conventional radiographic comparison. Algorithms for computer synthesis of panoramic, periapical, and bitewing images are presented. The algorithms were evaluated with data from clinical examinations of two persons. The results demonstrate the efficacy of the CT-based approach and that, in comparison with conventional radiographs, the synthesized images exhibit minimal geometric distortion, reduced blurring, and reduced superimposition of oral structures.

Nyckelord: computed tomography, radiograph, radon transform, dental comparison, forensic identification, x-ray images, system, teeth, ct



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Denna post skapades 2012-04-10. Senast ändrad 2012-04-17.
CPL Pubid: 156523

 

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Institutionen för signaler och system

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Övrig odontologi

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