Operating system: windows 8.1 Pro Slicer version: 4.3.1 Expected behavior: to have the possibility to transform surface models (mesh in stl format) to smooth geometry models (nurbs e.g. in IGES format) Actual behavior: 3D models are surface meshes, not real geometries

Andras: thanks for the reply. I will look again, but it looks like you admit that the Slicer is not the right tool for what gregorio and I want to do: import 3D structures of segmented tissue in some FEM packages. This is fine ofcourse! But I just hoped there would be some interest in seeing this as…

Thanks for the additional information. What is still not clear for me that if you can do all compositing of CAD models with anatomical structures in Slicer then why do you need NURBS export? Why cannot you use the volumetric mesh that Slicer generates directly in the FEM solver? I don’t think that F…

@gregorio and @moondrake99 is it possible to provide some images/videos showing comparison cases e.g slicer output and output from other tools.

[image] moondrake99: import 3D structures of segmented tissue in some FEM packages By FEM package, do you mean modeling tool, where you edit/combine 3D models? It is their limitation that they can only work with NURBS representation, and not with arbitrary segmented labelmaps (and not very we…

brhoom: yes. But this will take me some time (which I am rather short of atm). Will try. lassoan: By FEM package i mean a tool that does both the solving, but also preprocessing. And yes, it has some CAD ability in that it can edit and combine models. This has good reasons. One could for example e…

Thank you for the detailed explanation. I think I now understand your needs better. Updating of CAD models It can be certainly useful to update your CAD model as you combine it with anatomical shapes. We plan to implement real-time synchronization with selected modeling software (Blender and Free…

@moondrake99 thank you very much for the way you carried out the discussion. I’m sorry for my absence in the meantime, but I found you highlighted the problem in a more exhaustive way than I can. I try to explain again my simplier challenge, the reason why I need geometry: with anatomical structure…

[image] gregorio: D models are surface meshes, Hi Andras, I was looking at this extension. Does it need a segmented image as input to produce mesh? is there any explanation on how to use segment mesher extension? Is there any extension available that can create volumetric tetrahedral meshes …

[image] Saima: Does it need a segmented image as input to produce mesh? You need a segmentation node as input. You can create segmentation node from an existing labelmap volume or model node (surface mesh). If all you have is an grayscale input volume, then you can create a segmentation node …

Dear Lasso, I tried to use the segment mesher extension. Followed these steps: Downloaded Braintumor data Labeled tumor and brain using editor in segmentation [image] Mesh generation >> Clever [image] Settings Selected labels as inputs Output models new >> output model1 and output model 2 …

Use segmentations in CAD or FEM software

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Use segmentations in CAD or FEM software

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