T2-weighted spoiled gradient echo sequence (MERGE): A different perspective on the forensic age estimation

Ekizoglu, Oguzhan, Er, Ali, Basa, Can Dokur, Kacmaz, Ismail E, Can, Ismail O, García-Donas, Julieta G., Elena F, Kranioti (2017) T2-weighted spoiled gradient echo sequence (MERGE): A different perspective on the forensic age estimation. La Revenue de Médecine Légale, 8 (4). pp. 189-190. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
https://doi.org/10.1016/j.medleg.2017.10.030

Abstract

Introduction Age estimation methods using MRI are dependent on staging systems used in T1, T2 and fast spin-echo proton density-weighted sequences. The staging system created by Dedouit [1] from images obtained by fast spin-echo proton density-weighted MRI sequences depends on the assessment of horizontal cartilage hyperintensity. Images obtained by this method, detecting 1.5 mm hyperintensity thickness, and in some cases, detecting continuity of hyperintensity could be challenging. The purpose of this preliminary study was to investigate the utility of T2-weighted spoiled gradient echo sequence in determining the degree of ossification of epiphyses. Material and methods In this study, fast spin-echo proton density-weighted and MERGE T2-weighted spoiled gradient echo sequences of the knee of 25 patients (10–30 years, 10 female and 15 male) were evaluated using Dedouit et al.’s [1] five-stage method. Results The horizontal cartilages assessed with MERGE exhibited hyperintensity and clearly visible borders (Fig. 1). Stage 2 and 3 were easily distinguishable and the epiphyseal scar line observed in stage 5 (complete fusion) was easily observed in contrast to the fast spin-echo proton density-weighted sequence. The hyperintense line that was assessed in fast spin-echo proton density-weighted sequence in stage 3 cases was seen as continuous and intermittent hypointense line in MERGE sequence. It was suggested that substages may be necessary for the distinction of stage 3 and 4. Discussion At present, due to the ethical concerns, non-ionized methods (ultrasound and MRI) are more frequently used in living individuals’ age estimations. MRI assessments in spoiled T2-weighted spoiled gradient echo sequence for age determination may be advantageous in the examination of epiphyseal lines and may produce different options in staging

Item Type: Article
Uncontrolled keywords: Age estimation MERGE Forensic Sciences
Subjects: Q Science > Q Science (General)
Q Science > QM Human anatomy
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation
Faculties > Social Sciences > School of Anthropology and Conservation > Biological Anthropology
Depositing User: Julieta Garcia Donas
Date Deposited: 09 Oct 2018 21:16 UTC
Last Modified: 29 May 2019 21:15 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/69481 (The current URI for this page, for reference purposes)
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