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

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posted on 2017-05-29, 18:00 authored by Arjan J. GeersArjan J. Geers, Ignacio Larrabide, Alessandro G. Radaelli, Hrvoje Bogunovic, Minsuok Kim, Hugo A.F. Gratama van Andel, Charles B. Majoie, Ed VanBavel, Alejandro F. Frangi

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
* 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 for an analysis of the data.