[vtkusers] create vtkImageaData from a CT or MR Serie with diferrent spacing

[David Gobbi]

Oh, I understand now.  No, vtkImageData does not allow different
slices to have different spacings.

The simplest solution is to read the first 50 slices and the last 50
slices with different readers.  Then, you can resample the 2mm slices
to 1mm with vtkImageReslice.  Then, since all slices are now 1mm, you
can use vtkImageAppend to put them together again.

  David


On Tue, Feb 16, 2010 at 7:50 AM, Martin Schmitz
<meindatenlaufwerk at googlemail.com> wrote:
> hallo David,
>
> thank you for the answer,
> the distance between x-y is the same, the slice thickness can be different.
> In some series for example the first 50 files have a thickness of 1mm, the
> next 50 files a thickness of 2mm.
> Now I want to use VtkImageImageReslice to show the MPR viewes, must the data
> in VtkImageData have the same thickness???
> or i have to calculate a new spacing for the serie which contains files with
> different thickness???
>
> thank you
> Martin
>
>
>
> 2010/2/16 David Gobbi <david.gobbi at gmail.com>
>>
>> The Z spacing can be anything, the X, Y, and Z spacings do not have to
>> be equal.  All of the VTK classes that you mentioned will use the
>> spacing properly.  Are you seeing squashed or stretched-looking
>> images?
>>
>>   David
>>
>>
>> On Tue, Feb 16, 2010 at 3:38 AM, Orlinn
>> <MeinDatenLaufwerk at googlemail.com> wrote:
>> >
>> > hello VTK world,
>> >
>> > may be is my question very simple but i did not any answer.
>> > For volume rendering i read DICOM files but sometimes i have files which
>> > has
>> > different spacing in z direction.
>> > can i get problem when i use these data with different spacing  for
>> > example
>> > in
>> > MIP(vtk classes: vtkVolume,vtkVolumeRayCastMIPFunction), MPR(vtk class:
>> > vtkImageReslice) or
>> > Surface Rendering???
>> >
>> > thank you in advance
>> > Martin
>> > --
>> > View this message in context:
>> > http://old.nabble.com/create-vtkImageaData-from-a-CT-or-MR-Serie-with-diferrent-spacing-tp27606336p27606336.html
>> > Sent from the VTK - Users mailing list archive at Nabble.com.
>> >
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