Decompressive Craniectomy Finite Element Model

This dataset contains finite element models for biomechanical simulations, representing both the closed skull state and the unilateral decompressive craniectomy state (with a resection area of 170 cm²). All files are provided in COMSOL Multiphysics format (v6.2b; COMSOL AB, Sweden). PLEASE NOTE: To protect patient privacy and comply with data regulations, this dataset contains ONLY processed simulation model files derived from original medical images and DOES NOT CONTAIN any original DICOM medical imaging data. The original medical imaging data originated from the Department of Neurosurgery at a Fujian Provincial-level Hospital, and the associated research project has received ethical approval. These original DICOM images underwent standardized preprocessing using the open-source software 3D Slicer (v5.8.1; Brigham and Women's Hospital, USA). Target anatomical structures were segmented using a threshold-based labeling method. Subsequently, isolated small structures were removed, gaps were filled, meshes were simplified, and surfaces were smoothed to reconstruct a closed skull 3D geometric model. Boolean operations were applied to this model to generate the finite element model simulating unilateral decompressive craniectomy. The resulting skull geometry (in STL format) was imported into COMSOL Multiphysics for finite element simulation. To optimize computational efficiency, the skull geometry was simplified into an equivalent sphere model while preserving key biomechanical characteristics. Brain tissue biomechanics are described using the Neo-Hookean hyperelastic constitutive model, with all relevant material parameters included within the model definition files. Using this dataset requires COMSOL Multiphysics v6.2 (or a compatible version).