Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New technique to determine the age of immigrant minors through ribs and teeth

07.11.2007
Researchers from the Laboratory of Anthropology at the have devised a new technique to determine the age of living subjects using chest and dental x-rays.

The study was carried out by Dr. Pedro Manuel Garamendi González and directed by professors Miguel Botella López, and Inmaculada Alemán Aguilera. This is of special interest in the case of alleged illegal minors, since this technique will make it possible to determine the age of an individual by analysing the x-rays of their bones, when used in legal medicine.

For the study, UGR researchers conducted a comprehensive analysis of 123 digital postero-anterior chest x-rays and 742 digital ortopantomographies, using the “Image J” computer programme, which analyzes digital x-rays.

In radiology, what is the maturation rate of specific anatomical bone structures? The research carried out at the UGR aimed at answering this question. “In this particular case we have focused on the hyoid bone, the proximal clavicular epiphysis, the costal cartilage of the first rib, degenerative parameters of clavicle joints, certain abnormalities of the clavicle (conoid tubercle and the floor of the fourth ventricle) and cortical calvicular indicators”, stated Pedro Manuel Garamendi González.

Better than other techniques
The results of the project are of great interest for the legal medical practice, since they show the relative limits of current methods, nonetheless widely used and acknowledged by international study groups, such us the AGFAD (German group on age diagnostics). For instance, the fusion of the proximal epiphysis of the clavicle to diagnose ages of up to 21 years or the fusion of the greater horn of the hyoid to determine ages over 30 years are some of the methods applied by professionals.

The conclusions of the research carried out by the UGR suggest that it is impossible to establish the age of a subject by solely looking at the greater horn of the hyoid bone because it may or may not be fused (as part of the normal ageing process). When dealing with autopsy cases of strangulation and hanging (where hyoid bone fractures are likely to appear), it is advisable to always carry out a cervical x-ray in order to avoid errors in the differential diagnosis with pre-mortem and post-mortem fractures and non-fusion states.

More criteria for diagnosis
In the diagnosis of age in living subjects, the project considers new criteria with a sound scientific base and legal certainty. For instance, the use of the costal cartilage of the first rib has been suggested as a key factor in determining the age of individuals over 21 years.

The study opens the door to new research lines on age diagnosis based on the analysis of both the acromioclavicular and sternoclavicular joints using more appropriate image techniques.

A general assessment of the research parameters shows that, due to their technical features, the use of digital x-rays is not the most adequate method to be applied in Anthropologic research which will be based on metric measures. “Nevertheless, digital x-rays are appropriate for determining osteologic features of important bone areas in x-ray studies within the field of Physical Anthropology,” conclude the authors of the study.

Some of the research results have already been published in the magazine 'Notes on Forensic Medicine', currently the main magazine in Spanish on forensic medicine.

Antonio Marín Ruiz | alfa
Further information:
http://prensa.ugr.es/prensa/research/index.php

More articles from Studies and Analyses:

nachricht Antarctic Ice Sheet mass loss has increased
14.06.2018 | Technische Universität Dresden

nachricht WAKE-UP provides new treatment option for stroke patients | International study led by UKE
17.05.2018 | Universitätsklinikum Hamburg-Eppendorf

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Graphene assembled film shows higher thermal conductivity than graphite film

22.06.2018 | Materials Sciences

Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle

22.06.2018 | Earth Sciences

Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View

22.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>