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

Tue May 4 11:50:37 EDT 2010

No, using a 'modern' PC is usually sufficient, all keeps flowing when a user interactively modifies the cut plane (although 3 planes are cut simultaneously and a 3D scene is updated as well). In our case we usually represent the 3D structures with transparency; as we update the 3D scene as well this makes the application sometimes a bit stuttering. But as I understand your plan you do not have to update any 3D scene during cutting. The cutting is really fast.

lars

-------- Original-Nachricht --------
> Datum: Tue, 4 May 2010 11:12:05 -0400
> Von: Xiaofeng Z <xf10036 at hotmail.com>
> An: lars-friedrich at gmx.net, VTK <vtkusers at vtk.org>
> Betreff: RE: [vtkusers] Fwd: Re: RE: Create an approximate cross-section of a RT ROI

> 
> Lars,
> 
>  
> 
> Is there any noticable lagging at all?
> 
>  
> 
> Thanks!
> Xiaofeng
> 
> 
>  
> > Date: Tue, 4 May 2010 16:34:24 +0200
> > From: lars-friedrich at gmx.net
> > To: vtkusers at vtk.org
> > Subject: [vtkusers] Fwd: Re: RE: Create an approximate cross-section of
> a RT ROI
> > 
> > 
> > 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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