I am trying to prepare a surface mesh for use in a simulation. I need a surface with open ends that are perpendicular to the centerlines of the vessels. I have a segmentation that looks like this: [image] I would like to cut the ends normal to the centrelines to obtain a model with open ends sim…

Thank you, this is exactly what I was looking for. I can get it to work when the vessels attached to the aneurysm are relatively long. [clip-vessel-long] However, if I try to shorten the segments as required for our analysis the top of the aneurysm gets clipped as well. Is there any way to avoid …

The issue here is that there is no centerline associated with the aneurysm so the logic does not recognize it as a separate region and hence exclude it from the clipping. It may work if you are able to add a centerline to the tip of the aneurysm. Otherwise I think you will have to clip it above the …

Thanks @DavidM I got it to work by adding a few centerlines within the aneurysm. [clip-vessel-short-more-centerlines]

Are there any examples for how to use VMTK scripts from within 3D Slicer? For example, I would like to do the following after I clip the geometry: vmtksurfacenormals -ifile "../processed NRRDs/artery_cut_remesh_clip.stl" -ofile "artery_cut_remesh_clip_vmtksurfacenormals.stl" \ --pipe vmtksurface…

The VMTK extension for Slicer ( https://github.com/vmtk/SlicerExtension-VMTK ) has several examples of using VMTK features from python. For example, https://github.com/vmtk/SlicerExtension-VMTK/blob/master/ExtractCenterline/ExtractCenterline.py shows how to extract a centerline using VMTK and is a py…

Preparing a surface for meshing

Community VMTK

mikebind (Mike Bindschadler) April 29, 2024, 7:12pm 2

Sounds like this might be helpful: Vmtk surface clipping contribution

Topic		Replies	Views
Trimming normal to boundary VMTK	2	298	March 8, 2024
Vmtk surface clipping contribution Development vmtk	16	737	June 7, 2024
Cutting vessels - CFD Support segmentation	14	490	July 23, 2024
Automatation of Centerline VMTK	4	758	May 25, 2026
Prepare a coronary artery model for CFD simulation. Support	0	578	March 8, 2022

Preparing a surface for meshing

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