[vtkusers] Fwd: Re: RE: Create an approximate cross-section of a RT ROI

[Lars Friedrich Lars]

Xiaofeng,

I use a quite comparable approach for the same purpose as you, I guess: I cut multiple (!) 3D RT structures in 3 orthogonal planes simultaneously and cut the referenced RT volume (CT) at the same time. The structures include quite complex anatomy such as the skeletons with many vertices.
In my implementation (and that is nothing more than I wrote in the morning) this works 'very' interactively. For me that is real-time enough ;)

regards,

lars


-------- Original-Nachricht --------
> Datum: Tue, 4 May 2010 09:37:22 -0400
> Von: Xiaofeng Z <xf10036 at hotmail.com>
> An: lars-friedrich at gmx.net
> Betreff: RE: [vtkusers] Create an approximate cross-section of a RT ROI

> 
> lars,
> 
>  
> 
> I consider the method you described a more accurate way to do it. 
> Unfortunately, vtkCutter is too slow to be used in real time.
> 
>  
> 
> Thanks for your reply though!
> 
> Xiaofeng
> 
> 
>  
> > Date: Tue, 4 May 2010 07:55:33 +0200
> > From: lars-friedrich at gmx.net
> > Subject: Re: [vtkusers] Create an approximate cross-section of a RT ROI
> > To: xf10036 at hotmail.com; vtkusers at vtk.org
> > 
> > Hi Xiaofeng,
> > 
> > just an idea:
> > - produce a surface from the axial contours by using
> vtkVoxelContoursToSurfaceFilter (which works quite well provided your source contours are
> evenly distributed)
> > - take vtkCutter(s) with plane implicit functions that define your new
> contouring orientation(s) and cut the volume to produce new contours from
> that directions
> > 
> > HTH,
> > lars
> > 
> > 
> > -------- Original-Nachricht --------
> > > Datum: Mon, 3 May 2010 20:12:22 -0400
> > > Von: Xiaofeng Z <xf10036 at hotmail.com>
> > > An: VTK <vtkusers at vtk.org>
> > > Betreff: [vtkusers] Create an approximate cross-section of a RT ROI
> > 
> > > 
> > > Hi vtkUsers,
> > > 
> > > I have a set of contours in axial orientation representing a ROI. I
> need
> > > to sketch the ROI in coronal and sagittal plane, by connection the
> points
> > > made from the intersection of the contours and the cutting plane. Is
> there
> > > a function to do that in vtk or in ITK?
> > > 
> > > I know the result is not "precise" in a sense that the contours make
> this
> > > way is not always consistent between themselves. But it seemed to be
> the
> > > only viable way to sketch a ROI in a multi-planar rendering in real
> time.
> > > 
> > > Many thanks!
> > > Xiaofeng
> > > 
> > > 
> > > 
> > > 
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