Determination of age at death: Assessment of an algorithm of age prediction using numerical three-dimensional CT data from pubic bones

Pasquier, Elisabeth; Pernot, Luc De Saint Martin; Burdin, Valérie; Mounayer, Charbel; Rest, C. Le; Colin, D.; Mottier, Dominique; Rouxand, C.; Baccino, É.

doi:10.1002/(sici)1096-8644(199903)108:3<261::aid-ajpa2>3.0.co;2-b

Cited by 66 publications

(28 citation statements)

References 10 publications

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“…However, we think that the features useful for age estimation must be evaluated with a different approach, since the observers found several problems in scoring them. CT-images allow exploration of the subsurface features of the bones and they should be further investigated: Pasquier et al (1999) and Wade et al (2001) assessed the potential of trabecular bone structure for age estimation.…”

Section: Discussionmentioning

confidence: 99%

Technical Note: Reliability of suchey‐brooks and buckberry‐chamberlain methods on 3D visualizations from CT and laser scans

Villa

Buckberry

Cattaneo

et al. 2013

American J Phys Anthropol

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visualizations based on CT-scans and, for the first time, on 3D visualizations from laser scans.We examined how the bone features can be evaluated on 3D visualizations and whether the different modalities (direct observations of bones, 3D visualization from CT-scan and from laser scans) are alike to different observers. We found the best inter-observer agreement for the bones versus 3D visualizations, with the highest values for the auricular surface. Between the 3D modalities, less variability was obtained for the 3D laser visualizations. Fair interobserver agreement was obtained in the evaluation of the pubic bone in all modalities. In 3Dvisualizations of the auricular surfaces, transverse organization and apical changes could be evaluated, although with high inter-observer variability; micro-, macroporosity and surface texture were very difficult to score. In conclusion, these methods were developed for dry bones, where they perform best. The Suchey-Brooks method can be applied on 3Dvisualizations from CT or laser, but with less accuracy than on dry bone. The BuckberryChamberlain method should be modified before application on 3D visualizations. Future investigation should focus on a different approach and different features: 3D laser scans could be analyzed with mathematical approaches and sub-surface features should be explored on CT-scans.Villa C., Buckberry J., Cattaneo C., Lynnerup N. 2013.

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Section: Discussionmentioning

confidence: 99%

Technical Note: Reliability of suchey‐brooks and buckberry‐chamberlain methods on 3D visualizations from CT and laser scans

Villa

Buckberry

Cattaneo

et al. 2013

American J Phys Anthropol

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“…The reliably of the method in forensic cases was tested by Lynnerup et al [16], who obtained good results looking at the X-rayed trabecular changes in the proximal femur of living individuals. Computed Tomography (CT) was used to assess the trabecular structure changes on the pubic bone [17], the auricular surface [18] and the proximal epiphysis of the humerus and the femur [19]. Micro-CT scan, CT and X-ray were compared in a quantitative study of the trabecular changes in the pubic bone [20].…”

Section: Introductionmentioning

confidence: 99%

Forensic age estimation based on the trabecular bone changes of the pelvic bone using post-mortem CT

Villa

Hansen

Buckberry

et al. 2013

Forensic Science International

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Villa C., Hansen M.N., Buckberry J., Cattaneo C., Lynnerup N. AbstractWe analyzed the trabecular bone changes in the pubic bone (PB) and in the auricular surface (AS) of the ilium using 319 CT scans of cadavers to estimate the age. Although the sharpness of the trabecular structure decreases in CT images when soft tissues are present, we identified four phases for the changes in PB and five in AS; a juvenile trait in PB and a senile trait in AS helped narrow the age range. High correlation with age was identified for both sexes in PB (F 0.89; M 0.75) and in AS (F 0.85; M 0.71) used independently or combined (F 0.91; M 0.78). The old adults (> 60 years) could be evaluated with better accuracy and discriminated in several phases. We found low inter-observer error and low inaccuracy (about 6 years, mean for all age ranges). The method is robust with respect to slice thickness, display window and kernel within the tested ranges.

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“…In recent years, a new approach in anthropology has been developed called ''virtual anthropology,'' based on computed tomography (CT) studies (7)(8)(9). Over the last 20 years, developments in CT scan, and especially multislice acquisition, have resulted in significant improvement of spatial definition and isotropic image quality.…”

mentioning

confidence: 99%

Application of the Iscan Method to Two‐ and Three‐Dimensional Imaging of the Sternal End of the Right Fourth Rib*

Dédouit

Bindel

Gainza

et al. 2008

Journal of Forensic Sciences

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Age determination is a major field of interest in physical and forensic anthropology. Among the different methods based on macroscopic skeletal study, the Iscan method, which analyzes the sternal end of the right fourth rib, is one of the most reliable. We applied the Iscan method to two- and three-dimensional multislice computed tomography (MSCT) reconstructions of the sternal end of the right fourth rib on 39 ribs. The intra-observer variability on MSCT reconstructions was good (gamma coefficient equal to 0.86; value of the Krippendorff's alpha reliability equal to 0.79); inter-observer variability on MSCT reconstructions was also good (gamma coefficient ranging from 0.82 to 0.88; value of the Krippendorff's alpha reliability ranging from 0.78 to 0.86). We demonstrated excellent agreement between the results of analysis of bone samples and those of the two- and three-dimensional images, in particular regarding bone projections, morphology of the pit and of its rim. The accuracy of age estimation did not significantly differ between the Iscan method applied to dry bones and the same method applied to MSCT images. Determination of the Krippendorff's alpha reliability coefficient for the inter-error method confirmed the agreement between phase estimations obtained with the two methods (ranging from 0.55 to 0.71). The real civil age was comprised in 21 cases out of 36 for assessment performed on dry bones and in 23 cases out of 36 on MSCT reconstructions, which represented 58.3% and 63.9%, respectively. Use of MSCT reconstructions in forensic anthropology offers many advantages: no bone preparation, no damage to bone material, and the possibility of application to living individuals.

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Determination of age at death: Assessment of an algorithm of age prediction using numerical three-dimensional CT data from pubic bones

Cited by 66 publications

References 10 publications

Technical Note: Reliability of suchey‐brooks and buckberry‐chamberlain methods on 3D visualizations from CT and laser scans

Technical Note: Reliability of suchey‐brooks and buckberry‐chamberlain methods on 3D visualizations from CT and laser scans

Forensic age estimation based on the trabecular bone changes of the pelvic bone using post-mortem CT

Application of the Iscan Method to Two‐ and Three‐Dimensional Imaging of the Sternal End of the Right Fourth Rib*

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