  Computational simulations using methods such as the finite element (FE)
method rely on high-quality meshes for achieving accurate results. This study
introduces a method for creating a high-quality hexahedral mesh using the Open
Anatomy Project's brain atlas. Our atlas-based FE hexahedral mesh of the brain
mitigates potential inaccuracies and uncertainties due to segmentation - a
process that often requires input of an inexperienced analyst. It accomplishes
this by leveraging existing segmentation from the atlas. We further extend the
mesh's usability by forming a two-way correspondence between the atlas and
mesh. This feature facilitates property assignment for computational
simulations and enhances result analysis within an anatomical context. We
demonstrate the application of the mesh by solving the electroencephalography
(EEG) forward problem. Our method simplifies the mesh creation process,
reducing time and effort, and provides a more comprehensive and contextually
enriched visualisation of simulation outcomes.
