If SV could calculate the WSS？

Runlei Ma · Post by **Runlei Ma** » Tue Nov 28, 2017 9:12 am

Hi, is this software able to calculate wss（wall shear stress）？
What is the meaning of shear constant in that result?
There are pressure results ，and can it be converted into FFR （fractional flow reserve）？

Adam Updegrove · Post by **Adam Updegrove** » Thu Nov 30, 2017 3:21 pm

Hi Runlei,

Yes, SimVascular calculates WSS, and this can be exported into the converted results.

I'm not sure what you are asking by what is the meaning? Can you elaborate?

SimVascular does not do an automatic FFR calculation, but that should be easy to calculate on your own as you can get pressures at the locations you would like to use for the FFR calculation.

Thanks!

SimVascular Development Team

Runlei Ma · Post by **Runlei Ma** » Sat Dec 02, 2017 1:17 pm

Thanks for your reply.
Where I can find the WSS results and how？
What the shear constant parameter mean？
And whether I can calculate by FFR=Pd/Pa ？

Gabriel Maher · Post by **Gabriel Maher** » Tue Dec 05, 2017 2:51 pm

Hi Runlei,

The wall shear stress should automatically be exported when you export simulation results from SimVascular, it will be in the .vtp files. See the instructions under postprocessing at http://simvascular.github.io/docsFlowSo ... ostprocess

The shear constant is the uniform shear constant for vessel walls and is used in deformable wall simulations.

You can calculate the fractional flow reserve using the exported simulation results, but you will need to identify which nodes in the mesh are upstream/downstream from the relevant coronary arteries in your model.

Best,

Gabriel

If SV could calculate the WSS？

If SV could calculate the WSS？

Re: If SV could calculate the WSS？

Re: If SV could calculate the WSS？

Re: If SV could calculate the WSS？