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
* V_A: Aneurysm volume
* Q_P: TA flow rate in the parent vessel just proximal to the aneurysm
* Q_A: TA flow rate into the aneurysm
* NQ_A: Q_A / Q_P
* WSS_P: Average TA WSS on the wall of a parent vessel segment just proximal to the aneurysm
* WSS_A: Average TA WSS on the aneurysm wall
* NWSS_A: WSS_A / WSS_P
* LWSS_A: Portion of the aneurysm wall with WSS < 0.4 Pa at ED
* MWSS_A: Maximum WSS on the aneurysm wall at PS
* 90WSS_A: 90th percentile value of the WSS on the aneurysm wall at PS
* 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.