A critical review of Kahana and Hiss' study on identification from bone trabecular pattern and a test of their method conducted on the humerus are presented. Bone trabecular pattern was studied through the generation of a numerical file representing the gray scale. Using the correlation coefficient, several pairwise comparisons between numerical files were performed. The test gave nearly 30% of incorrect exclusions (the method did not recognize couples of radiographs belonging to the same subject) and 50% of misidentifications (the method recognized couples of radiographs belonging to different subjects, as belonging to the same subject); therefore, this research shows that at the present time, it is not possible to safely quantify identification through bone density patterns, of the proximal humerus taken from thoracic X-rays. Thus, an "easy"-but dangerous-use of trabecular density patterns on this specific type of radiogram as an identification method should be currently avoided.
Identification from chest x-rays: reliability of bone density patterns of the humerus / R. Ciaffi, D. De Angelis, P.F. Gherardini, G. Arcudi, R. Nessi, G.P. Cornalba, M. Grandi, C. Cattaneo. - In: JOURNAL OF FORENSIC SCIENCES. - ISSN 0022-1198. - 55:2(2010 Feb), pp. 478-481. [10.1111/j.1556-4029.2009.01297.x]
Identification from chest x-rays: reliability of bone density patterns of the humerus
D. De AngelisSecondo
;M. GrandiPenultimo
;C. CattaneoUltimo
2010
Abstract
A critical review of Kahana and Hiss' study on identification from bone trabecular pattern and a test of their method conducted on the humerus are presented. Bone trabecular pattern was studied through the generation of a numerical file representing the gray scale. Using the correlation coefficient, several pairwise comparisons between numerical files were performed. The test gave nearly 30% of incorrect exclusions (the method did not recognize couples of radiographs belonging to the same subject) and 50% of misidentifications (the method recognized couples of radiographs belonging to different subjects, as belonging to the same subject); therefore, this research shows that at the present time, it is not possible to safely quantify identification through bone density patterns, of the proximal humerus taken from thoracic X-rays. Thus, an "easy"-but dangerous-use of trabecular density patterns on this specific type of radiogram as an identification method should be currently avoided.Pubblicazioni consigliate
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