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).本数据集包含用于生物力学仿真的有限元模型，涵盖完整颅骨状态与单侧去骨瓣减压状态（切除面积为170 cm²）。所有文件均以COMSOL多物理场仿真软件（COMSOL Multiphysics）格式存储（版本v6.2b；瑞典COMSOL AB公司出品）。 请注意：为保护患者隐私并符合数据监管要求，本数据集仅包含源自原始医学影像的经处理仿真模型文件，不包含任何原始DICOM医学影像数据。原始医学影像数据采集自福建省某省级医院神经外科，相关研究项目已获得伦理审批。 这些原始DICOM影像采用开源软件3D Slicer（版本v5.8.1；美国布莱根妇女医院开发）进行标准化预处理。研究人员通过基于阈值的标记方法对目标解剖结构进行分割。随后，通过移除孤立小结构、填补间隙、简化网格与平滑表面，重建得到完整颅骨三维几何模型。对该模型执行布尔运算，生成模拟单侧去骨瓣减压状态的有限元模型。生成的颅骨几何模型（STL格式）被导入COMSOL多物理场仿真软件以开展有限元仿真。 为优化计算效率，研究人员在保留关键生物力学特性的前提下，将颅骨几何模型简化为等效球体模型。脑组织的生物力学特性采用Neo-Hookean超弹性本构模型进行描述，所有相关材料参数均包含在模型定义文件中。使用本数据集需安装COMSOL多物理场仿真软件v6.2或兼容版本。