Re: [vmtk-users] Problems with sigmoid mask

[Vincent Ip <drv...@gm...>]

Thank you so much!

Sent from my iPhone

On 27 May, 2013, at 8:08 AM, Luca Antiga <luc...@gm...> wrote:

> 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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