Development of non-invasive procedure for evaluating absolute intracranial pressure based on finite element modeling
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Date
2010-09-09T19:55:37Z
Authors
Li, Zhaoxia
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Abstract
Elevated intracranial pressure (ICP) in closed head injury may lead to a vegetative state and even death. Current methods available for measuring ICP may cause infection, haemorrhage or not reliable. A patient-specific correlation between ICP and an external vibration response was used for ICP evaluation, which based on finite element (FE) modeling. In FE modeling, a two dimensional FE model of human head was built in ANSYS. Geometry information was obtained from a magnetic resonance image of the human head, while the material properties were acquired from literatures. Vibration responses, e.g., displacement, velocity, acceleration and equivalent strain, were obtained for applied ICPs in FE analyses. Correlations between ICP and vibration responses were established. Effects of impact magnitude and impact duration were studied. Response sensitivity was defined to find a vibration response that is sensitive to ICP change. A procedure based on response sensitivity was proposed for ICP evaluation.
Description
Keywords
Intracranial pressure, Non-invasive method, Finite element modeling
Citation
Z. Li, Y. Luo, H.Chen, Q. Zhang, and M.Del Bigio (2010). On evaluation of intracranial pressure in closed head injury. International Journal for Multiscale Materials Modeling, 1: 9-23.
Z. Li and Y. Luo (2010). Finite element study of correlation between intracranial pressure and dynamic responses of human head. Advances in Theoretical and Applied Mechanics, 3(3):139 – 149.
Z. Li and Y. Luo (2010). Tentative non-invasive procedure for evaluating intracranial pressure. In Proceedings of the Canadian Society for Mechanical Engineering Forum, Victoria, BC, Canada, June 7 - June 9.
Z. Li and Y. Luo (2010). Finite element study of correlation between intracranial pressure and dynamic responses of human head. Advances in Theoretical and Applied Mechanics, 3(3):139 – 149.
Z. Li and Y. Luo (2010). Tentative non-invasive procedure for evaluating intracranial pressure. In Proceedings of the Canadian Society for Mechanical Engineering Forum, Victoria, BC, Canada, June 7 - June 9.