Smoothing should fix that. You can also use VMTK extension’s level set segmentation to get a nicely smoothed vessel wall.
If you want to print a shell (so that you can try placement of intravascular devices) then you can create that easily in Segment Editor:
- Go to Logical operators effect, set Overwrite other segments = None in Masking section (to allow segments to overlap)
- Create a new segment and copy the existing vessel lumen segment into it
- Grow the new segment using Margin effect, by as much as shell thickness you would like to have
- Subtract the original vessel lumen segment from the enlarged segment using Logical operators effect
