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A position- and time-dependent pressure profile to model viscoelastic mechanical behavior of the brain tissue due to tumor growth

Author

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  • Fatemeh Abdolkarimzadeh
  • Mohammad Reza Ashory
  • Ahmad Ghasemi-Ghalebahman
  • Alireza Karimi

Abstract

This study proposed a computational framework to calculate the resultant position- and time-dependent pressure profile on the brain tissue due to tumor growth. A finite element (FE) patch of the brain tissue was constructed and an inverse dynamic FE-optimization algorithm was used to calculate its viscoelastic mechanical properties under compressive uniaxial loading. Two patient-specific post-tumor resection FE models were input to the FE-optimization algorithm to calculate the optimized 3rd-order position-dependent and normal distribution time-dependent pressure profile parameters. The optimized viscoelastic material properties, the most suitable simulation time, and the optimized 3rd-order position- and -time-dependent pressure profiles were calculated.

Suggested Citation

  • Fatemeh Abdolkarimzadeh & Mohammad Reza Ashory & Ahmad Ghasemi-Ghalebahman & Alireza Karimi, 2023. "A position- and time-dependent pressure profile to model viscoelastic mechanical behavior of the brain tissue due to tumor growth," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 26(6), pages 660-672, April.
    • Handle: RePEc:taf:gcmbxx:v:26:y:2023:i:6:p:660-672
    DOI: 10.1080/10255842.2022.2082245
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