Hello, As described in the subject line, I am having some weird experiences with the meshing tool and simulation interface. To begin, I have imported a geometry (STL) pieced together externally; actually, I used SV to make the vessels and another program for the aneurysm. I was able to import the ST...

Hello, I wanted to know if SimVascular is capable of meshing a model that has been imported? I extracted the surfaces/walls for my model, but I am unable to get the program to mesh it. I keep getting "Tetgen error code 10." No meshing happens, and I have tried changing the element size. I was able t...

Ex.PNG Hi Gabriel, I haven't had a ton of luck with getting the aneurysm to fill.. It seems that the colliding fronts move towards the ends instead of filling all "neighboring" space. Therefore, I've tried to place an end in the aneurysm instead. First, not sure if this will work? Secondly, I'm see...

Example.PNG As you can see in the image, I've got two inlets and two outlets leaving an aneurysm in the Circle of Willis. However, one inlet seed/outlet pair doesn't have any segmentation. I've tried various threshold levels, but I can't get it to work. In addition, The aneurysm itself isn't being ...

Hello Gabriel, Thank you for the information. That makes more sense. I can share photos in a little bit, but I wanted to check how the 3D segmentation progresses ("stops at the outlet"). I've placed the seeds at the entrance locations for my inlets, but the tool keeps segmenting down one vessel/neve...

Hello, I'm looking to use the 3D segmentation tool to model the Circle of Willis with an aneurysm. I've tried planting three 'inlet' seeds with six 'outlet' seeds. Is there a way to use multiple "normal/start" seeds for segmentation? Also, what should I be aiming to have the threshold set at? I keep...

Hello both,

I ended up getting the simulations to run through random combinations and looking at the bct.vtp files. That tip was very helpful.

I'll install the latest version, but I'm all finished up with this project for now. Thank you for the advice!

Joseph

As an update, Adam: I'm now viewing the bct.vtp files before running any simulations. I've tried to "flip normal" and add (-) signs to the flow file.

I continue to see a negative velocity profile created for the basilar artery.

Hi Adam, To setup multiple inlets, I am assigning velocity profiles/inflows to each of my 3 desired locations. For the outlets, I am assigning resistance values. I haven't run with multiple inlets before, but I've worked with single inflow simulations in SimVascular already. For the bct.vtp files, h...

As an update: I went ahead and estimated using the Measurement tool.

I think this works well enough as long as the image data came in 'mm' scale.

Joseph