Preliminary Development and Validation of an Atlas-Based Finite Element Brain Model

Area of Science:

• Biomechanics
• Neuroscience
• Computational modeling

Background:

• Traumatic brain injury (TBI) is a significant cause of death and disability.
• Finite element models are crucial for understanding TBI.
• Accurate models require detailed anatomical data.

Purpose of the Study:

• To develop an anatomically accurate finite element model of the brain.
• To compare the model's brain displacement predictions with cadaveric experimental data.
• To validate the model for understanding TBI biomechanics.

Main Methods:

• Developed an atlas-based brain model (ABM) using voxel-based mesh generation from ICBM data.
• Applied identical boundary conditions to the ABM as used in cadaveric experiments.
• Recorded and computed relative brain displacements using neutral density targets (NDTs) in simulations and experiments.

Main Results:

• The finite element model demonstrated good agreement with experimental cadaveric data.
• Simulated relative brain displacements closely matched recorded NDT motion.
• The model successfully replicated key biomechanical responses observed in experiments.

Conclusions:

• The developed atlas-based brain model is a valid tool for TBI research.
• This model can enhance understanding of head injury biomechanics.
• Further development will improve prediction and prevention of brain injuries.