Reproducibility of hemodynamic simulations of cerebral aneurysms across imaging modalities 3DRA and CTA: Geometric and hemodynamic data

This dataset was created as part of the following study: Geers AJ, Larrabide I, Radaelli AG, Bogunovic H, Kim M, Gratama van Andel HAF, Majoie CB, VanBavel E, Frangi AF. Patient-specific computational hemodynamics of intracranial aneurysms from 3D rotational angiography and CT angiography: An in vivo reproducibility study. American Journal of Neuroradiology, 32(3):581–586, 2011. The goal of the study was to determine the reproducibility of blood flow simulations of cerebral aneurysms. Patients with a total of 10 cerebral aneurysms were imaged with both 3D rotational angiography (3DRA) and computed tomographic angiography (CTA). Each image independently was segmented to obtain a vascular model, the same boundary conditions were imposed, and a CFD simulation was obtained. The dataset contains values for geometric and hemodynamic variables that were derived from the CFD simulations. The variables are defined as follows (TA: time-averaged; PS: peak systole; ED: end diastole): * A_N: Aneurysm neck area<br>* V_A: Aneurysm volume<br>* Q_P: TA flow rate in the parent vessel just proximal to the aneurysm<br>* Q_A: TA flow rate into the aneurysm<br>* NQ_A: Q_A / Q_P<br>* WSS_P: Average TA WSS on the wall of a parent vessel segment just proximal to the aneurysm<br>* WSS_A: Average TA WSS on the aneurysm wall<br>* NWSS_A: WSS_A / WSS_P<br>* LWSS_A: Portion of the aneurysm wall with WSS &lt; 0.4 Pa at ED<br>* MWSS_A: Maximum WSS on the aneurysm wall at PS<br>* 90WSS_A: 90th percentile value of the WSS on the aneurysm wall at PS<br>* N90WSS_A: 90WSS_A normalized by the average WSS on the aneurysm wall at PS See https://github.com/ajgeers/3dracta for an analysis of the data.本数据集基于以下研究创建：Geers AJ、Larrabide I、Radaelli AG、Bogunovic H、Kim M、Gratama van Andel HAF、Majoie CB、VanBavel E、Frangi AF。论文题为《基于3D旋转血管造影（3D rotational angiography, 3DRA）与CT血管造影（computed tomographic angiography, CTA）的颅内动脉瘤患者特异性计算血流动力学：一项体内可重复性研究》，发表于《美国神经放射学杂志》2011年，第32卷第3期，页码581–586。 本研究旨在明确脑动脉瘤血流模拟的可重复性。研究共纳入10例颅内动脉瘤患者，分别采用3DRA与CTA进行影像采集。对每一类影像独立进行分割以获取血管模型，施加相同的边界条件后完成计算流体动力学（computational fluid dynamics, CFD）模拟。 本数据集包含从CFD模拟中提取的几何与血流动力学变量数值，各变量定义如下（TA：时间平均；PS：收缩期峰值；ED：舒张末期）： * A_N：动脉瘤颈面积 * V_A：动脉瘤体积 * Q_P：动脉瘤近端紧邻的载瘤动脉内的时间平均流量 * Q_A：流入动脉瘤的时间平均流量 * NQ_A：Q_A与Q_P的比值 * WSS_P：动脉瘤近端紧邻的载瘤动脉段管壁的时间平均壁面切应力（wall shear stress, WSS） * WSS_A：动脉瘤壁的时间平均壁面切应力 * NWSS_A：WSS_A与WSS_P的比值 * LWSS_A：舒张末期时动脉瘤壁上壁面切应力小于0.4 Pa的区域占比 * MWSS_A：收缩期峰值时动脉瘤壁的最大壁面切应力 * 90WSS_A：收缩期峰值时动脉瘤壁壁面切应力的90百分位值 * N90WSS_A：以收缩期峰值时动脉瘤壁的平均壁面切应力为基准归一化后的90WSS_A值 可访问https://github.com/ajgeers/3dracta 查看该数据集的分析详情。