[Insight-users] Reading Dicom files

[Mathieu Malaterre]

Andrew,

	Could you share a copy of a DICOM RT image. I would like to add it to 
the gdcmData baseline to run regression testing on it. So that in the 
future we directly support this DICOM IOD.

Thanks for your help
Mathieu

Bill Lorensen wrote:
> Andrew,
> You can still get at this information. We store all dicom tags in the 
> meta data dictionary for the image. Look at the dicom processing 
> examples in Examples/IO to see how to get the meta data dictionary. Once 
> you have it, you can use the ExposeMetaData method to get the values for 
> a given tag.
>  
> Bill
> 
>  
> On 6/1/06, *Hoole, Andrew* <andrew.hoole at addenbrookes.nhs.uk 
> <mailto:andrew.hoole at addenbrookes.nhs.uk>> wrote:
> 
>     Hi Bill
> 
>      
> 
>     The image which I have been using is a DRR from our planning system
>     - RTImage modality. I have looked in the DICOM and the spacing is in
>     (0x3002,0x0011) and the position is in  (0x3002,0x0012). This is
>     probably the issue - it handles normal images not DICOM RT images.
> 
>      
> 
>     *Andrew Hoole *
> 
>     -------------------------------------------------------------------------
> 
> 
>     Medical Physics, Box 152
> 
>     Cambridge University Hospitals NHS Trust
>     Addenbrooke's Hospital
> 
>     Hills Rd
> 
>     Cambridge         Tel: (+44) (0)1223-216544
> 
>     CB2 2QQ           Fax: (+44) (0)1223-257137
> 
>     UK                    Email: andrew.hoole at addenbrookes.nhs.uk
>     <mailto:andrew.hoole at addenbrookes.nhs.uk>
> 
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>     -----Original Message-----
>     *From:* Bill Lorensen [mailto: bill.lorensen at gmail.com
>     <mailto:bill.lorensen at gmail.com>]
>     *Sent:* 01 June 2006 17:35
>     * To:* Hoole, Andrew
>     *Cc:* insight-users at itk.org <mailto:insight-users at itk.org>
>     * Subject:* Re: [Insight-users] Reading Dicom files
> 
>      
> 
>     Andrew,
> 
>      
> 
>     The reader does read the pixel spacing and origin. What is the
>     source of your dicom images?
> 
>      
> 
>     Bill
> 
>      
> 
>     On 6/1/06, *Hoole, Andrew* < andrew.hoole at addenbrookes.nhs.uk
>     <mailto:andrew.hoole at addenbrookes.nhs.uk>> wrote:
> 
>     Hi All
> 
>      
> 
>     I'm new to the ITK stuff and having been working through the User
>     guide. I have used the code in the guide to read a DICOM file and
>     display it in a window. When I read the file it doesn't appear to
>     read the information related to the pixel size or the origin of the
>     image. This information is embedded in the DICOM is there a way to
>     make the reader get this data or is the problem with the image which
>     I hook onto the output of the reader. The code I am using is as
>     follows:
> 
>      
> 
>                 typedef signed short InputPixelType;
> 
>                 const unsigned int   InputDimension = 2;
> 
>      
> 
>                 typedef itk::Image< InputPixelType, InputDimension >
>     InputImageType;
> 
>                 typedef itk::ImageFileReader< InputImageType > ReaderType;
> 
>      
> 
>                 ReaderType::Pointer reader = ReaderType::New();
> 
>                 reader->SetFileName("c:\\temp\\test.dcm");
> 
>                 typedef itk::GDCMImageIO           ImageIOType;
> 
>      
> 
>                 ImageIOType::Pointer gdcmImageIO = ImageIOType::New();
> 
>      
> 
>                 reader->SetImageIO( gdcmImageIO );
> 
>                 try {
> 
>                             reader->Update();
> 
>                 }
> 
>                 catch (itk::ExceptionObject & e){
> 
>                             AfxMessageBox("Exception in file reader
>     ",MB_OK,NULL);
> 
>                             return;
> 
>                 }
> 
>      
> 
>                 typedef itk::Point< double,
>     InputImageType::ImageDimension > PointType;
> 
>                 PointType point;
> 
>                 InputImageType::IndexType pixelIndex;
> 
>                 InputImageType::PixelType pixelValue;
> 
>                 InputImageType::Pointer image = reader->GetOutput();
> 
>      
> 
>                 InputImageType::SpacingType spacing;
> 
>                 spacing[0] = 0.5; // spacing along X
> 
>                 spacing[1] = 0.5; // spacing along Y
> 
>                 image->SetSpacing( spacing );
> 
>                
> 
>                 InputImageType::PointType origin;
> 
>                 origin[0] = -128.0; // coordinates of the
> 
>                 origin[1] = -128.0; // first pixel in N-D
> 
>                 image->SetOrigin( origin );         
> 
>                
> 
>     As you can see I am manually setting the pixel size and origin which
>     is not ideal.
> 
>      
> 
>     Regards
> 
>      
> 
>     *Andrew Hoole *
> 
>     -------------------------------------------------------------------------
> 
> 
>     Medical Physics, Box 152
> 
>     Cambridge University Hospitals NHS Trust
>     Addenbrooke's Hospital
> 
>     Hills Rd
> 
>     Cambridge         Tel: (+44) (0)1223-216544
> 
>     CB2 2QQ           Fax: (+44) (0)1223-257137
> 
>     UK                    Email: andrew.hoole at addenbrookes.nhs.uk
>     <mailto:andrew.hoole at addenbrookes.nhs.uk>
> 
>     --------------------------------------------------------------------------
> 
> 
>     The information contained in this EMAIL and any attachments is
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>     http://www.addenbrookes.org.uk/email_disclaimer.html_>_
> 
>      
> 
> 
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