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Hello,
We've been running simulations on SimVascular focused around patient cerebrovasculature (OSMSC patient 0079_0000). We calculated the resistance based on the expectant pressures and then split the resistances on SimVascular. Normal pressure in the area is supposed to be in the range of 60-150mmHg, but we've been getting pressures of 0-11000mmHg. We've attached an image of our ParaView output.
Thank you in advance.

You can take a look at the outlets with almost 0 pressures. Use the mean outflow rate to multiple outlet resistance. If the outlet pressure doesn't match with QxR, the outflow boundary condition is not correctly prescribed. You can check all outlet faces are correctly tagged in the svpre file and the ids are consistent with those in the solver.inp. In addition, you can check your model and mesh if there are extra faces that share the same name with the outlet face. Thirdly, you can load a cylinder model into simvascular and apply cerebral inflow and resistance. This may help you to check your consistency in the procedure to run a simulation.

Thank you for all of your suggestions. I'm going to try all of them!