Validation of the New Interpretation of Gerasimov's Nasal Projection Method for Forensic Facial Approximation Using CT Data

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Genevieve Maltais Lapointe, Niels Lynnerup, Robert D Hoppa

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.
OriginalsprogEngelsk
TidsskriftJournal of Forensic Sciences
Vol/bind61
Udgave nummerS1
Sider (fra-til)S193-S200
Antal sider8
ISSN0022-1198
DOI
StatusUdgivet - jan. 2016

ID: 147545526