In the recent years various simulation challenges have been
organized in order 
to check the applicability of the computational hemodynamics
for intracranial 
aneurysms. Radaelli et al. [1] performed a comparison for
virtually stented 
patient-specific cases using flow diverters. Steinman et al.
[2] compared the 
velocity and pressure values obtained by various groups in a
giant aneurysm. 
One of the main difficulties when performing computational
fluid dynamics 
(CFD) for patient-specific cases is the prediction of the
rupture probability. 
The current challenge involves two patient-specific
MCA-aneurysms that should 
be analyzed by CFD in a blind test. One of the provided data
sets corresponds 
to a ruptured aneurysm, while the other one can be
considered as unruptured. 
The ruptured case is documented with intra-operative video
recording. 
Therefore, the exact ruptured site of the aneurysm is known.

-The reconstructed surface geometries will be provided after
sending an e-mail 
to janiga_at_ovgu.de
-The participants are free to choose their computational
model, software, 
boundary condition etc.
-The participants are also free to use any criteria to
analyze the obtained 
solutions with a view to rupture prediction. It is expected
that the participants 
should predict: 1) which one was the ruptured aneurysm based
on their 
computational results; 2) at which location the rupture took
place. 

[1]Radaelli, AG et al.: Reproducibility of haemodynamical
simulations in a 
subject-specific stented aneurysm model - a report on the
Virtual Intracranial 
Stenting Challenge 2007. J Biomech. 2008 Jul 19;41(10):2069-81.
[2]Steinman, DA et al.: Variability of computational fluid
dynamics solutions for 
pressure and flow in a giant aneurysm: the ASME 2012 Summer
Bioengineering 
Conference CFD Challenge. J Biomech Eng. 2013 Feb;135(2):021016