Modeling of the Aorta: Complexities and Inadequacies

Area of Science:

• Biomedical Engineering
• Computational Biology
• Cardiovascular Science

Background:

• The aorta, a vital organ, possesses intricate structural complexities including multiple layers and tissue types.
• Existing mathematical models of the aorta often fail to incorporate these essential features.
• This necessitates a re-evaluation of modeling approaches for the aorta.

Purpose of the Study:

• To identify and discuss critical features required for developing a meaningful mathematical model of the aorta.
• To highlight the limitations of current aorta modeling techniques.
• To guide future research in creating more accurate aorta biomechanical models.

Main Methods:

• Review and analysis of the aorta's structural and material properties.
• Identification of key anisotropic, inhomogeneous, and multiconstituent characteristics.
• Comparative assessment of existing aorta models against biological complexities.

Main Results:

• The aorta's complexity arises from its three layers and four tissue types.
• Anisotropic, inhomogeneous, and multiconstituent properties are crucial for accurate modeling.
• Current models inadequately represent these fundamental aspects of aortic structure.

Conclusions:

• A comprehensive mathematical model of the aorta must integrate its layered structure and diverse tissue composition.
• Accounting for anisotropic and inhomogeneous material properties is essential for realistic biomechanical simulations.
• Future modeling efforts should prioritize these features to improve understanding of aortic function and disease.