[Insight-users] re:re:why not ITK can read the spacing correctly?

[Yixun Liu]

Hi Luis,
Thank your help!
Yes I compare it with the dicom header.

One question. If the dicom files are not consecutive. Could ITK read them correctly?

Another question. I use DICOMImageIO2 and DicomImageIO to read a same series. The DICOMImageIO2 can read  the spacing[2] correctly, but DICOMImageIO is error. Why? 

Regards,

Yixun Liu




----- Original Message ----- 
From: "Luis Ibanez" <luis.ibanez at kitware.com>
To: "Yixun Liu" <yxliu at fudan.edu.cn>
Cc: "ITK" <insight-users at itk.org>
Sent: Friday, April 28, 2006 9:17 PM
Subject: Re: [Insight-users] why not ITK can read the spacing correctly?


> 
> Hi Yixun,
> 
> What lead you to think that the value of spacing[2] is incorrect ?
> 
> Are you comparing the value of spacing[2] against the value in
> the DICOM header ?
> 
> 
> If so, then it is normal that they differ.
> 
> The spacing[2] is computed using the difference in
> origin between consecutive slices. This value does not
> have to match the spacing value in the DICOM header.
> 
> 
> 
>   Regards,
> 
> 
>      Luis
> 
> 
> 
> ------------------------
> Yixun Liu wrote:
> > Hi,
> >  
> > I use the below codes to read a series of MRI,
> >  
> >  this->dicomReader = ReaderType_Short::New();//itk
> >  itk::DICOMSeriesFileNames::Pointer nameGenerator = 
> > itk::DICOMSeriesFileNames::New();
> >  nameGenerator->SetDirectory( (const char*)strPath );
> >  typedef std::vector<std::string> fileNamesContainer;
> >  fileNamesContainer fileNames;
> >  fileNames = nameGenerator->GetFileNames();
> >  this->dicomReader->SetImageIO( itk::DICOMImageIO2::New() );
> >  this->dicomReader->SetFileNames( fileNames ); 
> >  this->dicomReader->Update();
> >  
> > However, the spacing[2], namely spacing between slices, is uncorrect.
> >  
> > Hope your help!
> >  
> >  
> > Regards,
> >  
> > Yixun Liu
> > 
> > 
> > ------------------------------------------------------------------------
> > 
> > _______________________________________________
> > Insight-users mailing list
> > Insight-users at itk.org
> > http://www.itk.org/mailman/listinfo/insight-users
> 
> 
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