[vtkusers] internal radiotherapy kernel

[Richard Brown]

Cory, 

Yes, that is an assumption we’re going with (but it is a 3D kernel function). I’ll take a look at vtkFastSplatter then.

Cheers,
Richard

> On 15 Oct 2015, at 17:52, Cory Quammen <cory.quammen at kitware.com> wrote:
> 
> Richard,
> 
> By spatially invariant, I mean that the 2D kernel function that is accumulated in the dose grid is the same no matter where the treatment point is. Is that the case?
> 
> Cory
> 
> On Thu, Oct 15, 2015 at 11:46 AM, Richard Brown <richard.j.brown at live.co.uk <mailto:richard.j.brown at live.co.uk>> wrote:
> Cory,
> 
> Thanks for the reply, but the kernel is not spatially invariant, it has a sharp peak in the centre (like the image in this link: http://www.jacmp.org/index.php/jacmp/article/viewFile/4371/3082/46375 <http://www.jacmp.org/index.php/jacmp/article/viewFile/4371/3082/46375>).
> 
> Thanks,
> Richard
> 
>> On 15 Oct 2015, at 15:14, Cory Quammen <cory.quammen at kitware.com <mailto:cory.quammen at kitware.com>> wrote:
>> 
>> Richard,
>> 
>> If your kernel is spatially invariant, you may want to look into vtkFastSplatter [1].
>> 
>> Thanks,
>> Cory
>> 
>> [1] http://www.vtk.org/doc/nightly/html/classvtkFastSplatter.html#a921b3de4b2b70437aa7273342fedfb74 <http://www.vtk.org/doc/nightly/html/classvtkFastSplatter.html#a921b3de4b2b70437aa7273342fedfb74>
>> 
>> On Thu, Oct 15, 2015 at 8:23 AM, mbcx9rb9 <richard.j.brown at live.co.uk <mailto:richard.j.brown at live.co.uk>> wrote:
>> Hi all,
>> 
>> Im working on internal radiotherapy and, currently, I calculate my absorbed
>> dose information (DVH etc.) by adding a kernel (vtkImageData) at each
>> treatment point to a large dose grid (vtkImageData) that covers the whole
>> treatment region. Then I pass by vtkImageAccumulate to do the dosimetry.
>> 
>> Is this the best way to do it? Because if the majority receives no absorbed
>> dose, it seems wasteful (in terms of memory) to have those voxels at the
>> same resolution as in my kernel, where I have a very steep gradient of
>> absorbed dose.
>> 
>> Are there any other approaches? Would it, for example, be possible to store
>> my kernel as a vtkUnstructuredGrid and still pass it by vtkImageAccumulate
>> and get the same results?
>> 
>> Thanks for any responses in advance.
>> 
>> 
>> 
>> --
>> View this message in context: http://vtk.1045678.n5.nabble.com/internal-radiotherapy-kernel-tp5734426.html <http://vtk.1045678.n5.nabble.com/internal-radiotherapy-kernel-tp5734426.html>
>> Sent from the VTK - Users mailing list archive at Nabble.com <http://nabble.com/>.
>> _______________________________________________
>> Powered by www.kitware.com <http://www.kitware.com/>
>> 
>> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html <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 <http://www.vtk.org/Wiki/VTK_FAQ>
>> 
>> Search the list archives at: http://markmail.org/search/?q=vtkusers <http://markmail.org/search/?q=vtkusers>
>> 
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/vtkusers <http://public.kitware.com/mailman/listinfo/vtkusers>
>> 
>> 
>> 
>> -- 
>> Cory Quammen
>> R&D Engineer
>> Kitware, Inc.
> 
> 
> 
> 
> -- 
> Cory Quammen
> R&D Engineer
> Kitware, Inc.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/vtkusers/attachments/20151016/dbf073d7/attachment.html>