Displacement voxelization to resolve mesh-image mismatch: Application in deriving dense white matter fiber strains.

ABSTRACT:

Background and objective

It is common to combine biomechanical modeling and medical images for multimodal analyses. However, mesh-image mismatch may occur that prevents direct information exchange. To eliminate mesh-image mismatch, we develop a simple but elegant displacement voxelization technique based on image voxel corner nodes to achieve voxel-wise strain. We then apply the technique to derive dense white matter fiber strains along whole-brain tractography (∼35 k fiber tracts consisting of ∼3.3 million sampling points) resulting from head impact.

Methods

Displacements at image voxel corner nodes are first obtained from model simulation via scattered interpolation. Each voxel is then scaled linearly to form a unit hexahedral element. This allows convenient and efficient

SUBMITTER: Ji S 

PROVIDER: S-EPMC8665149 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature