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

Fatemeh Abdolkarimzadeh, Mohammad Reza Ashory, Ahmad Ghasemi-Ghalebahman and Alireza Karimi

Computer Methods in Biomechanics and Biomedical Engineering, 2023, vol. 26, issue 6, 660-672

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.

Date: 2023
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DOI: 10.1080/10255842.2022.2082245

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