[vtkusers] Re: [Insight-users] Re: [Insight-developers] DICOM series

[Bill Lorensen]

Jean-Piere,

Thanks, that's probably the best solution for Ivan.

Bill
On Nov 22, 2007 2:16 PM, Jean-Pierre Roux <jpr at creatis.insa-lyon.fr> wrote:

> Bill Lorensen wrote:
> > Ivan,
> >  This seems to be a vtk question. In the future, please post questions
> > like this to vtk-users at vtk.org <mailto:vtk-users at vtk.org>.
> >
> > I notice you are using the vtkDICOMImageReader. itk has much better
> > support for DICOM than vtk. In itk, your can use the
> > itkGDCMSeriesFilenames class to get the list of files in multiple
> > dicom series. Also, the itk dicom reader based on GDCM is a robust,
> > full featured reader.
> > A dicom filename has nothing to do with the ordering of images in a
> > series. The position information is stored within the file itself. It
> > may be that your files always are named with a numerical suffix that
> > corresponds to the order of the images, but this is not in general
> > true, nor guaranteed.
> > If you are using vtk, you will have to retrieve the
> > ImagePositionPatient for each file and sort the file names accordingly.
> That's right.
> But, if you want to go on using vtk only (and not ITK), you can download
> GDCM, that comes with a vtkGdcmReader, and use the gdcm::SerieHelper,
> that allows you task for file sorting, and them reading the whole file
> set into a single vtkImageData.
>
> http://www.creatis.univ-lyon1.fr/Public/Gdcm
>
> Jean-Pierre Roux
> > Your real question I think will be best answered by the vtkusers list.
> >
> > Bill
> >
> > On Nov 22, 2007 1:20 PM, ivan gm <ivan.gm.itk at gmail.com
>  > <mailto:ivan.gm.itk at gmail.com>> wrote:
> >
> >     Hello:
> >
> >     I'm trying to show images with C++ in an MFC GUI. I have 79 images
> >     to read in DICOM format, nowadays I'm reading each image separate
> >     with a vtkDICOMImageReader with this code:
> >
> >     std::string path = cFileDialog.GetPathName();
> >     std::string file = cFileDialog.GetFileName();
> >     path = path.erase(path.rfind(file),file.length());
> >     this->readerDirectory = path;
> >     this->nameGenerator->SetDirectory( path.c_str());
> >     this->nameGenerator->SetFileNameSortingOrderToSortByImageNumber();
> >     this->fileNames = this->nameGenerator->GetFileNames();
> >     // read new data
> >     n_value = 0;
> >     if (!this->pvtkDICOMReader)
> >     this->pvtkDICOMReader = vtkDICOMImageReader::New();
> >
> this->pvtkDICOMReader->SetFileName(this->fileNames[n_value].c_str());
> >
> >     After that, I show the image in my form with this code:
> >
> >             this->pvtkDICOMReader->Update();
> >
> >     this->pvtkImageMapper->SetInput(this->pvtkDICOMReader->GetOutput());
> >             this->pvtkImageMapper->SetColorWindow(8192);
> >             this->pvtkImageMapper->SetColorLevel(128);
> >             this->pvtkActor2D->SetMapper(this->pvtkImageMapper);
> >             this->pvtkRenderer->AddActor(this->pvtkActor2D);
> >
> >     I read the first image showing it in the form and when i push a
> >     button I read the second and then the third... It runs perfectly
> >     but what I want to do is to read all my 79 images with the
> >     vtkDICOMImageReader and after that show the image with an index
> >     number from 0 to 78 as an example. I don't know how to do that and
> >     if it is possible. Do you have any suggestions?
> >
> >     Thanks a lot and
> >     sorry for my English.
> >
> >     _______________________________________________
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> >     Insight-developers at itk.org <mailto:Insight-developers at itk.org>
> >     http://www.itk.org/mailman/listinfo/insight-developers
> >
> >
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> >
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