Re: [vmtk-users] Problems with sigmoid mask

[Luca A. <luc...@gm...>]

Hi Vincent,
 I'll find some time to give this a shot in the next few hours.
I don't guarantee I'll succeed but stay tuned.

Luca


On May 13, 2013, at 4:20 AM, Vincent Ip wrote:

> Dear VMTK users,
> 
> I followed the tutorial from VMTK website and tried to extract the geometry of right internal carotid artery from a CT DICOM images. As the right ICA is embedded in bone, I made the sigmoid mask followed by the usual steps in getting the surface (I used colliding fronts in this case). Despite repeated attempts with various threshold level, I still could not get the surface properly and here I come to seek the advice from you guys.
> 
> <Screen Shot 2013-05-12 at 7.10.05 PM.png>
> 
> This is the 'lump' I got when I tried to extract the C4 segment of the right ICA. I have already added the sigmoid function to this level set with isosurface for bone as 550 and -50 for air.
> 
> Here I attached the image_voi & the sigmoid feature files and I sincerely hope that someone could give me some hints on how to extract the surface without the bone in my way.
> 
> Many thanks in advance!
> 
> Vincent
> 
> <sigmoid_feature.vti><image_volume_voi.vti>------------------------------------------------------------------------------
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