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

Tue May 4 11:59:32 EDT 2010

Thanks for the information.  I may revisit this later.  Maybe I did something wrong that causes the performance issue.

I use a dual Xeon computer.  Although I have eight processing cores, the speed of each core is not very fast (2GHz).

Another reason I am not using  vtkVoxelContoursToSurfaceFilter is that it requires contours with integer vertices while dicom RT contour points can be off voxel centers.  I wonder what do you do to make sure you don't loss resolution.

Thanks!

Xiaofeng

> Date: Tue, 4 May 2010 17:50:37 +0200
> From: lars-friedrich at gmx.net
> Subject: Re: RE: [vtkusers] Fwd: Re: RE: Create an approximate cross-section of a RT ROI
> To: xf10036 at hotmail.com; vtkusers at vtk.org
> 
> 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
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > _________________________________________________________________
> > > > > > The New Busy is not the old busy. Search, chat and e-mail from
> > your
> > > > inbox.
> > > > > >
> > > >
> > http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_3
> > > > > 
> > > > > -- 
> > > > > GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
> > > > > Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
> > > > 
> > > > _________________________________________________________________
> > > > Hotmail is redefining busy with tools for the New Busy. Get more from
> > your
> > > > inbox.
> > > >
> > http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_2
> > > 
> > > -- 
> > > GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
> > > Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
> > > 
> > > -- 
> > > GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
> > > Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
> > > _______________________________________________
> > > Powered by www.kitware.com
> > > 
> > > Visit other Kitware open-source projects at
> > http://www.kitware.com/opensource/opensource.html
> > > 
> > > Please keep messages on-topic and check the VTK FAQ at:
> > http://www.vtk.org/Wiki/VTK_FAQ
> > > 
> > > Follow this link to subscribe/unsubscribe:
> > > http://www.vtk.org/mailman/listinfo/vtkusers
> > 
> > _________________________________________________________________
> > The New Busy is not the old busy. Search, chat and e-mail from your inbox.
> > http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_3
> 
> -- 
> GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
> Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01

_________________________________________________________________
Hotmail has tools for the New Busy. Search, chat and e-mail from your inbox.
http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_1
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20100504/8ec6d7e7/attachment.htm>