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https://www.readbyqxmd.com/read/27930820/a-bayesian-approach-to-age-at-death-estimation-from-osteoarthritis-of-the-shoulder-in-modern-north-americans
#1
Ashley L Brennaman, Kim R Love, Jonathan D Bethard, James T Pokines
Osteoarthritis (OA) is a marker of degeneration within the skeleton, frequently associated with age. This study quantifies the correlation between OA and age-at-death and investigates the utility of shoulder OA as a forensic age indicator using a modern North American sample of 206 individuals. Lipping, surface porosity, osteophyte formation, eburnation, and percentage of joint surface affected were recorded on an ordinal scale and summed to create composite scores that were assigned a specific phase. Spearman's correlation indicated a positive relationship between each composite score and age (right shoulder = 0...
December 8, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27924404/magnetic-resonance-imaging-of-the-distal-radial-epiphysis-a-new-criterion-of-maturity-for-determining-whether-the-age-of-18-has-been-completed
#2
M Timme, C Ottow, R Schulz, H Pfeiffer, W Heindel, V Vieth, A Schmeling, S Schmidt
To improve the accuracy of forensic age estimation where there is no legal basis for carrying out x-ray examinations, it would be useful to establish non-x-ray imaging techniques. The objective of this study was to provide reference data for the magnetic resonance imaging-based evaluation of the ossification stage of the distal radius. Furthermore, we tested a new criterion of the maturity of the distal radial epiphysis for determining whether an individual has completed the age of 18. We investigated 668 MRI scans of the distal radial epiphysis from 333 female and 335 male subjects ranging in age from 12 to 24...
December 6, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27909868/dental-age-estimation-in-the-living-after-completion-of-third-molar-mineralization-new-data-for-gustafson-s-criteria
#3
M Timme, W H Timme, A Olze, C Ottow, S Ribbecke, H Pfeiffer, R Dettmeyer, A Schmeling
There is a need for dental age estimation methods after completion of the third molar mineralization. Degenerative dental characteristics appear to be suitable for forensic age diagnostics beyond the 18th year of life. In 2012, Olze et al. investigated the criteria studied by Gustafson using orthopantomograms. The objective of this study was to prove the applicability and reliability of this method with a large cohort and a wide age range, including older individuals. For this purpose, 2346 orthopantomograms of 1167 female and 1179 male Germans aged 15 to 70 years were reviewed...
December 1, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27908672/forensic-age-estimation-in-anti-piracy-trials-in-seychelles-experiences-and-challenges-faced
#4
S A Gunawardena, U A Liyanage, J B Weeratna, N D N A Mendis, H J M Perera, R W Jayasekara, R Fernando
Forensic age estimation (FAE) was conducted using a multifactorial method on thirteen Somali detainees claiming juvenile status during the anti-piracy trials of the Seychelles Supreme Court in 2014/2015. A multidisciplinary team, comprising of four of the authors covering specialties in forensic medicine, forensic odontology and radiology, conducted the FAE using a five-stage protocol. Each detainee was interviewed with an interpreter and examined for disorders affecting dental/skeletal development and for assessment of genital development through Tanner staging...
November 14, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27885641/apophyseal-ossification-of-the-iliac-crest-in-forensic-age-estimation-computed-tomography-standards-for-modern-australian-subadults
#5
Nicolene Lottering, Clair L Alston-Knox, Donna M MacGregor, Maree T Izatt, Caroline A Grant, Clayton J Adam, Laura S Gregory
This study contrasts the ontogeny of the iliac crest apophysis using conventional radiography and multislice computed tomography (MSCT), providing probabilistic information for age estimation of modern Australian subadults. Retrospective abdominopelvic MSCT data acquired from 524 Australian individuals aged 7-25 and surveillance radiographs of adolescent idiopathic scoliosis patients included in the Paediatric Spine Research Group Progression Study (n = 531) were assessed. Ossification scoring of pseudo-radiographs and three-dimensional (3D) volume-rendered reconstructions using Risser (1958) quantitative descriptors indicate discrepancies in age estimates, stage allocation, and conflicting morphological progression...
November 25, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27885431/forensic-age-assessment-of-asylum-seekers-in-finland
#6
Mari Metsäniitty, Olli Varkkola, Janna Waltimo-Sirén, Helena Ranta
In Finland, forensic age assessment is strictly regulated by legislation. According to the Aliens Act (301/2004) and the amendment of the Act (549/2010), the police authorities, the frontier guard authorities, and the immigration authorities have the right to refer asylum seekers to the University of Helsinki, Department of Forensic Medicine, for age assessment. These assessments are especially performed to solve if the person is of major age, the cutoff being 18 completed years. The forensic age assessment is largely based on dental development, since the special permit of the Radiation and Nuclear Safety Authority (STUK) to the Department of Forensic Medicine of the University of Helsinki, allowing the use of ionizing radiation for non-medical purposes, includes dental and hand X-rays...
November 25, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27825336/dental-age-assessment-in-6-to-14-year-old-german-children-comparison-of-cameriere-and-demirjian-methods
#7
Thomas Gerhard Wolf, Benjamín Briseño-Marroquín, Angelika Callaway, Michael Patyna, Victor Thomas Müller, Ines Willershausen, Vicky Ehlers, Brita Willershausen
BACKGROUND: The aim of the study was to compare two frequently used dental age estimation methods for accuracy. METHODS: A total of 479 panoramic radiographs in age groups 6-14 years from a German population were evaluated. The dental age of 268 boys and 211 girls was assessed by means of the method of Demirjian (1973) and Cameriere (2006) and compared with their actual chronological age. RESULTS: Demirjan's method showed an overestimation of dental age compared to chronological age in all age groups for boys (mean difference -0...
November 8, 2016: BMC Oral Health
https://www.readbyqxmd.com/read/27770721/forensic-age-estimation-of-living-persons-from-the-knee-comparison-of-mri-with-radiographs
#8
Fei Fan, Kui Zhang, Zhao Peng, Jing-Hui Cui, Na Hu, Zhen-Hua Deng
To perform a study to clarify how strong the chronological age relates to ossification of the knee in Chinese on X-rays and the MRI when a similar four-stage grading system was used. 322 individuals with conventional radiographs and MRI were collected from routine medical investigations and evaluated retrospectively. Bland Altman plots were performed to reveal the agreement of grading of MRI and radiograph. Regression analysis was conducted to establish a mathematical model for age estimation. The ossification process of the knee occurs earlier in females than in males for about 1-2 years...
October 12, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27658782/systematic-procedure-for-identifying-the-five-main-ossification-stages-of-the-medial-clavicular-epiphysis-using-computed-tomography-a-practical-proposal-for-forensic-age-diagnostics
#9
Daniel Wittschieber, Ronald Schulz, Heidi Pfeiffer, Andreas Schmeling, Sven Schmidt
In forensic age estimations of living individuals, computed tomography of the clavicle is widely used for determining the age of majority. To this end, the degree of ossification of the medial clavicular epiphysis can be determined by means of two classification systems complementing each other: a 5-stage system and an additional 6-stage system that further sub-classifies the stages 2 and 3. In recent years, practical experience and new data revealed that difficulties and even wrong stage determinations may occur especially when following the short descriptions of the fundamental 5-stage system only...
September 22, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27650301/forensic-age-estimation-based-on-magnetic-resonance-imaging-of-third-molars-converting-2d-staging-into-3d-staging
#10
Jannick De Tobel, Elke Hillewig, Koenraad Verstraete
BACKGROUND: Established methods to stage development of third molars for forensic age estimation are based on the evaluation of radiographs, which show a 2D projection. It has not been investigated whether these methods require any adjustments in order to apply them to stage third molars on magnetic resonance imaging (MRI), which shows 3D information. AIM: To prospectively study root stage assessment of third molars in age estimation using 3 Tesla MRI and to compare this with panoramic radiographs, in order to provide considerations for converting 2D staging into 3D staging and to determine the decisive root...
September 20, 2016: Annals of Human Biology
https://www.readbyqxmd.com/read/27631994/optimising-magnetic-resonance-imaging-based-evaluation-of-the-ossification-of-the-medial-clavicular-epiphysis-a-multi-centre-study
#11
S Schmidt, C A Henke, D Wittschieber, V Vieth, T Bajanowski, F Ramsthaler, K Püschel, H Pfeiffer, A Schmeling, R Schulz
Evaluation of the ossification of the medial clavicular epiphysis plays a key role in forensic age estimation, particularly in determining whether the age of 18 has been attained. A key research objective in the forensic age estimation field at present is to establish non-X-ray methods for investigating the clavicle. This paper looks at the use of magnetic resonance imaging for evaluating the developmental state of the medial clavicular epiphysis. Clavicle specimens obtained from autopsies of 125 female and 270 male subjects aged from 10 to 30 were examined using a 3-T magnetic resonance scanner...
November 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27622753/third-molar-maturity-index-by-measurements-of-open-apices-in-a-libyan-sample-of-living-subjects
#12
Ashref Ali Khalifa Dardouri, Roberto Cameriere, Stefano De Luca, Stefano Vanin
In most countries, forensic age estimation in living subjects has become increasingly important in the last few years. In addition, as the age of legal majority ranges from 14 to 18 in many countries, and in Libya it is 18 years, radiographic assessment of the degree of third molar development is essential for forensic age estimation of adolescents and young adults. The aim of this paper is to assess the accuracy of the cut-off value of 0.08, by measurements of third molar index (I3M), in determining if a subject is adult or not in Libyan population...
October 2016: Forensic Science International
https://www.readbyqxmd.com/read/27582472/correction-to-de-tobel-hillewig-bogaert-deblaere-and-verstraete-magnetic-resonance-imaging-of-third-molars-developing-a-protocol-suitable-for-forensic-age-estimation
#13
(no author information available yet)
No abstract text is available yet for this article.
August 31, 2016: Annals of Human Biology
https://www.readbyqxmd.com/read/27555734/pulp-tooth-ratio-of-mandibular-first-and-second-molars-on-panoramic-radiographs-an-aid-for-forensic-age-estimation
#14
Palak H Shah, Rashmi Venkatesh
OBJECTIVE: To determine and compare the accuracy of pulp/tooth ratio method in mandibular first and second molar teeth in forensic age estimation. MATERIALS AND METHODS: A total 300 panoramic radiographs of the Gujarati population (187 males and 113 females) were studied. The measurements of Pulp Chamber Height (PCH) and Crown Root Trunk Height (CRTH) were performed on the mandibular first and second molar teeth. The acquired data was subjected to correlation and regression...
May 2016: Journal of Forensic Dental Sciences
https://www.readbyqxmd.com/read/27544359/the-completely-fused-medial-clavicular-epiphysis-in-high-frequency-ultrasound-scans-as-a-diagnostic-criterion-for-forensic-age-estimations-in-the-living
#15
Michael Gonsior, Frank Ramsthaler, Christoph Birngruber, Martin Obert, Marcel A Verhoff
The assessment of ossification of the medial clavicular epiphysis plays a decisive role in the forensic age estimation of living subjects. Primarily for reasons of minimizing the radiation exposure currently associated with such evaluations, non-ionizing methods would be an advance.This study pursued the question whether full union of the medial clavicular epiphysis, visualized by high-frequency sonography, is a reliable criterion for age-threshold determinations. The ossification stage of the medial clavicular epiphysis of 215 female and 195 male volunteers, aged between 14 and 26 years, was evaluated in bilateral sonograms...
November 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27497326/forensic-age-prediction-for-dead-or-living-samples-by-use-of-methylation-sensitive-high-resolution-melting
#16
Yuya Hamano, Sho Manabe, Chie Morimoto, Shuntaro Fujimoto, Munetaka Ozeki, Keiji Tamaki
Age prediction with epigenetic information is now edging closer to practical use in forensic community. Many age-related CpG (AR-CpG) sites have proven useful in predicting age in pyrosequencing or DNA chip analyses. In this study, a wide range methylation status in the ELOVL2 and FHL2 promoter regions were detected with methylation-sensitive high resolution melting (MS-HRM) in a labor-, time-, and cost-effective manner. Non-linear-distributions of methylation status and chronological age were newly fitted to the logistic curve...
July 2016: Legal Medicine
https://www.readbyqxmd.com/read/27441983/development-of-a-reference-data-set-rds-for-dental-age-estimation-dae-and-testing-of-this-with-a-separate-validation-set-vs-in-a-southern-chinese-population
#17
Jayakumar Jayaraman, Hai Ming Wong, Nigel M King, Graham J Roberts
BACKGROUND: Many countries have recently experienced a rapid increase in the demand for forensic age estimates of unaccompanied minors. Hong Kong is a major tourist and business center where there has been an increase in the number of people intercepted with false travel documents. An accurate estimation of age is only possible when a dataset for age estimation that has been derived from the corresponding ethnic population. Thus, the aim of this study was to develop and validate a Reference Data Set (RDS) for dental age estimation for southern Chinese...
October 2016: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/27352083/evaluation-of-age-estimation-in-forensic-medicine-by-examination-of-medial-clavicular-ossification-from-thin-slice-computed-tomography-images
#18
Murat Serdar Gurses, Nursel Turkmen Inanir, Gokhan Gokalp, Recep Fedakar, Eren Tobcu, Gokhan Ocakoglu
Forensic age estimation, a recent topic of research in forensic medicine, is of primary importance to criminal and civil law. Previous studies indicate that the observation of medial clavicular ossification allows for age discrimination along the completed 18th and 21st years of life. Experts recommend that the Schmeling and Kellinghaus methods be used together. In this study, we used these staging methods to retrospectively analyze 725 case studies (385 males, 340 females) of thin-slice computed tomography (CT) images, ranging from 0...
September 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27344264/applicability-of-greulich-pyle-and-tanner-whitehouse-grading-methods-to-mri-when-assessing-hand-bone-age-in-forensic-age-estimation-a-pilot-study
#19
Martin Urschler, Astrid Krauskopf, Thomas Widek, Erich Sorantin, Thomas Ehammer, Martin Borkenstein, Kathrin Yen, Eva Scheurer
Determination of skeletal development is a key pillar in forensic age estimation of living persons. Radiological assessment of hand bone age is widely used until the age of about 17-18 years, applying visual grading techniques to hand radiographs. This study investigated whether Greulich-Pyle (GP) and Tanner-Whitehouse (TW2) grading can be equally used for magnetic resonance imaging (MRI) data, which would offer the huge benefit of avoiding ionizing radiation. In 18 subjects aged between 7 and 17 years a radiograph and an MRI scan of the hand were performed...
September 2016: Forensic Science International
https://www.readbyqxmd.com/read/27337627/development-of-a-methylation-marker-set-for-forensic-age-estimation-using-analysis-of-public-methylation-data-and-the-agena-bioscience-epityper-system
#20
A Freire-Aradas, C Phillips, A Mosquera-Miguel, L Girón-Santamaría, A Gómez-Tato, M Casares de Cal, J Álvarez-Dios, J Ansede-Bermejo, M Torres-Español, P M Schneider, E Pośpiech, W Branicki, Á Carracedo, M V Lareu
Individual age estimation has the potential to provide key information that could enhance and extend DNA intelligence tools. Following predictive tests for externally visible characteristics developed in recent years, prediction of age could guide police investigations and improve the assessment of age-related phenotype expression patterns such as hair colour changes and early onset of male pattern baldness. DNA methylation at CpG positions has emerged as the most promising DNA tests to ascertain the individual age of the donor of a biological contact trace...
September 2016: Forensic Science International. Genetics
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