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Mathematical models used in TBI
KTH, School of Technology and Health (STH), Neuronic Engineering.ORCID iD: 0000-0003-0125-0784
2010 (English)Conference paper (Other academic)
Abstract [en]

In Sweden, head injuries causes about 78% of the deaths in motor vehicle accidents. The total annual rate of head injuries in Sweden over the last 14 years is also relatively constant. Thus, in spite of several national preventive strategies, there has not been an important impact on the total burden of head injury. Neurotrauma is the physical damage that results when the human skull and brain are suddenly subjected to intolerable levels of energy that is usually transmitted mechanically. Most of the research in the injury prevention area was initiated by the military aircraft industry in the sixties and seventies. Today the research is to a greater extent sponsored by the car manufacturing industry, partly as a result of the demands from the customers and the media. However, there is a long way to go before a complete understanding of the pathophysiological events following an accident is reached. This paper primarily focuses on summarizing current efforts, and to outline future strategies in human head injury modeling. Although the finite element (FE) modeling of the human head has been advancing over the past decades, it is still far from being able to explain all brain injury mechanisms and predict all types of impact injuries. However, using proper material characterization, correct boundary conditions and detailed geometric representation, a finite element model of the human head can provide us a powerful tool. A detailed and parameterized FE model of the adult human head is presented. It includes the scalp, skull, brain, meninges, cerebrospinal fluid (CSF), and eleven pairs of bridging veins. Separate representations of gray and white matter, and inclusion of the ventricles were also implemented. Non-linear and viscoelastic models are derived for the central nervous system (CNS) and meninges and the importance for injury prediction is outlined. The fluids were modelled using an Eulerian FE formulation, and constrains between fluids and solids were defined. Proposed injury measures for the CNS are also evaluated. Application of the FE head model to reconstructions of real head injury cases will also be discussed.

Place, publisher, year, edition, pages
Keyword [en]
accident reconstruction, brain injury prevention, Finite element analysis, traumatic brain injury
National Category
Other Medical Engineering
URN: urn:nbn:se:kth:diva-89233OAI: diva2:502840
Karolinska Institutet 200 years anniversary Symposium on Traumatic Injuries in the Nervous System, Stockholm, Sweden, 15 Sep - 16 Sep, 2010
QC 20120418Available from: 2012-02-14 Created: 2012-02-14 Last updated: 2012-04-18Bibliographically approved

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Kleiven, Svein
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