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On the assessment of bridging vein rupture associated acute subdural hematoma through finite element analysis
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2017 (English)In: Computer Methods in Biomechanics and Biomedical Engineering, ISSN 1025-5842, E-ISSN 1476-8259, Vol. 20, no 5, p. 530-539Article in journal (Refereed) Published
Abstract [en]

Acute subdural hematoma (ASDH) is a type of intracranial haemorrhage following head impact, with high mortality rates. Bridging vein (BV) rupture is a major cause of ASDH, which is why a biofidelic representation of BVs in finite element (FE) head models is essential for the successful prediction of ASDH. We investigated the mechanical behavior of BVs in the KTH FE head model. First, a sensitivity study quantified the effect of loading conditions and mechanical properties on BV strain. It was found that the peak rotational velocity and acceleration and pulse duration have a pronounced effect on the BV strains. Both Young's modulus and diameter are also negatively correlated with the BV strains. A normalized multiple linear regression model using Young's modulus, outer diameter and peak rotational velocity to predict the BV strain yields an adjusted -value of 0.81. Secondly, cadaver head impact experiments were simulated with varying sets of mechanical properties, upon which the amount of successful BV rupture predictions was evaluated. The success rate fluctuated between 67 and 75%. To further increase the predictive capability of FE head models w.r.t. BV rupture, future work should be directed towards improvement of the BV representation, both geometrically and mechanically.

Place, publisher, year, edition, pages
Taylor & Francis, 2017. Vol. 20, no 5, p. 530-539
Keywords [en]
Bridging veins, acute subdural hematoma, mechanical properties, finite element modelling, head impact
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-205436DOI: 10.1080/10255842.2016.1255942ISI: 000395351500008PubMedID: 27838925Scopus ID: 2-s2.0-84994896188OAI: oai:DiVA.org:kth-205436DiVA, id: diva2:1097190
Note

QC 20170522

Available from: 2017-05-22 Created: 2017-05-22 Last updated: 2017-05-22Bibliographically approved

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Kleiven, Svein

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