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Updated: May 29, 2026
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Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
Published on: January 8, 2013
An anisotropic microsphere-based approach for fiber orientation adaptation in soft tissue
Pablo Sáez1, Estefanía Peña, Manuel Doblaré
1Group of Structural Mechanics and Materials Modeling, Aragón Institute of Engineering Research (I3A), Universidad de Zaragoza, Zaragoza 50010, Spain. psaez@unizar.es
IEEE Transactions on Bio-Medical Engineering
|September 1, 2011
Summary
Biological tissue remodeling involves collagen fibril reorientation. This study models fibril adaptation to stimuli, showing increased material stiffness and a stable state, aligning with known biological tissue responses.
Area of Science:
- Biophysics
- Materials Science
- Computational Biology
Background:
- Biological tissue adaptation and remodeling are crucial evolutionary processes.
- Fibrous structures, like collagen bundles, exhibit complex directional properties.
- Understanding tissue response to stimuli is key in regenerative medicine and biomechanics.
Purpose of the Study:
- To develop a multiscale model for simulating the remodeling of fibered biological tissues.
- To investigate the role of fibril orientation in tissue adaptation.
- To provide a computational tool for analyzing microstructural changes in collagen bundles.
Main Methods:
- Introduction of a von Mises statistical distribution to model fibril directional dispersion.
- Remodeling of fibrils through orientation changes.
- Application of the microsphere approach for multiscale homogenization (microstructure to macroscale).
Main Results:
- The model demonstrates fibril reorientation in response to external stimuli.
- Simulated reorientation leads to increased material stiffness.
- The remodeling process eventually reaches a stationary state, indicating adaptation.
Conclusions:
- The multiscale model accurately captures biological tissue adaptation.
- Fibril reorientation is a key mechanism for tissue stiffening and response to stimuli.
- Findings are consistent with existing literature on tissue mechanics and adaptation.
