Data Underlying the MSc Thesis: Computational Fluid Dynamics Modeling of Mesenteric Arteries for Chronic Mesenteric Ischemia Diagnosis

In this study, computational fluid dynamics (CFD) was employed to enhance the understanding and aid in the diagnosis of chronic mesenteric ischemia (CMI). Both idealized and patient-specific geometries of a patent celiac artery (CA) and a stenosed superior mesenteric artery (SMA) were modeled. Three idealized configurations were considered: a baseline model without collateral vessels (Model 0), a model with a collateral vessel connecting the CA and SMA (Model 1), and a model with an additional collateral branch (Model 2). Additionally, nine patient-specific geometries reconstructed from computed tomography (CT) images were analyzed. Blood flow simulations were performed under resting and hyperemic conditions, the latter defined by a hyperemic factor, using Ansys Fluent. At the outlets, either mass flow rate or resistance-based boundary conditions were applied. The resulting dataset includes mass flow rates and pressures at the inlet and outlets for all simulations, including those conducted as part of the mesh sensitivity analysis (MSA).

本研究采用计算流体动力学（CFD）手段，以深化对慢性肠系膜缺血（CMI）的认知并辅助其临床诊断。研究构建了通畅腹腔干动脉（CA）与狭窄性肠系膜上动脉（SMA）的理想化几何模型及患者特异性几何模型，共设置三类理想化构型：无侧支血管的基准模型（模型0）、连接CA与SMA的单侧支血管模型（模型1），以及增设额外侧支分支的模型（模型2）。此外，本研究还对9例由计算机断层扫描（CT）图像重建得到的患者特异性几何模型展开分析。血流模拟采用Ansys Fluent软件开展，工况涵盖静息状态与充血状态，其中充血状态通过充血因子进行定义。流道出口处分别采用质量流量或基于阻力的边界条件作为约束。本数据集涵盖所有模拟工况（含网格敏感性分析（MSA）相关模拟）的入口与出口处质量流量及压力数据。