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- Title
Validation of the New Interpretation of Gerasimov's Nasal Projection Method for Forensic Facial Approximation Using CT Data.
- Authors
Maltais Lapointe, Genevieve; Lynnerup, Niels; Hoppa, Robert D.
- Abstract
The most common method to predict nasal projection for forensic facial approximation is Gerasimov's two-tangent method. Ullrich H, Stephan CN ( J Forensic Sci, 2011; 56: 470) argued that the method has not being properly implemented and a revised interpretation was proposed. The aim of this study was to compare the accuracy of both versions using a sample of 66 postmortem cranial CT data. The true nasal tip was defined using pronasale and nasal spine line, as it was not originally specified by Gerasimov. The original guidelines were found to be highly inaccurate with the position of the nasal tip being overestimated by c. 2 cm. Despite the revised interpretation consistently resulting in smaller distance from true nasal tip, the method was not statistically accurate ( p > 0.05) in positioning the tip of the nose (absolute distance >5 mm). These results support that Gerasimov's method was not properly performed, and Ullrich H, Stephan CN ( J Forensic Sci, 2011; 56: 470) interpretation should be used instead.
- Subjects
FACE perception; BIOMETRIC identification; FORENSIC anthropology; FORENSIC anthropology laboratories; FORENSIC science equipment; FORENSIC sciences
- Publication
Journal of Forensic Sciences, 2016, Vol 61, pS193
- ISSN
0022-1198
- Publication type
Article
- DOI
10.1111/1556-4029.12920