[Insight-users] Help me out!!!

[Luis Ibanez]

Hi Krishna,


1) ITK have classes for reading the entire set of DICOM
    files. Please look at the example:

      Insight/Examples/IO/
        DicomSeriesReadImageWrite.cxx


2) Qt is a GUI library, you will not find functionalities
    for reading DICOM files there. However you will find
    classes for displaying images.



For a demo application using a Qt GUI for displaying ITK
images you can look at

    InsightApplications/Auxiliary/QtImageViewer


You could simply modify this application by integrating
in it the code of the example in (1). In that way you
will have a (Qt+ITK) application capable of reading
DICOM series and displaying them slice by slice.

--

Before you go too far... you are *strongly* encouraged
to read the first five sessions of the Tutorials

      http://www.itk.org/HTML/Tutorials.htm

and the first two chapters of the software guide

      http://www.itk.org/ItkSoftwareGuide.pdf


That will save you a lot of time once you start
writing code. In particular you must get familiar
with the data pipeline architecture used in ITK.



Regards,


   Luis


---------------------------
krishna kanth dodda wrote:
> Hai ,
>        I am using ITK and I have small problem in reading the DICOM file 
> set. First I want to know wether there is any in built function in  
> either Itk or Qt for reading the whole set of DICOM files and displaying 
> one file after the other.
>  
>  what I have done is intially i have selected one file then the image 
> was loaded ,the next thing i have done is i have implemented two buttons 
> one previous and one Next, file loading but when i click these buttons I 
> am getting a message that the loading image was sucessfull , But  the 
> Image is not getting updated.
>  
> I am very new to Itk so please some body help me out .
> the code was already exists in Itk applications  and i have made small 
> changes and the changes are shown below .
>  
> the code in Qtslicer.cxx
> (it is for the process to be done when clicked on "previous" button the 
> files are named as "0001.dcm"..........."0035.dcm" ......."0120.dcm".)
> void QtSlicer::PreImage()
> {
>  
>  QString tmp=leImage->text();
>  string temp = tmp.latin1();
>  string k(temp,0,temp.size()-8);
>  int i=sBimageno->value();
>  i=i-1;
>  //QtSlicer mGUi( 0, 0, TRUE );
>  
>  
>  
>  ReaderType::Pointer reader1 = ReaderType::New();
>  char num[4];
>  
>  if(i>=1 && i<10)
>  {
>   
>   if (i<=1) pBprevious->setProperty("enabled",QVariant(false));
>   _itoa(i,num,10);
>   k+="000";
>   k+=num;
>   k+=".dcm";
>  }
>  else if(i<100)
>  {
>   _itoa(i,num,10);
>   k+="00";
>   k+=num;
>   k+=".dcm";
>  }
>  else if(i<1000)
>  {
>   _itoa(i,num,10);
>   k+="0";
>   k+=num;
>   k+=".dcm";
>  }
>  
>  r eader1->SetFileName( k.c_str());
>  std::cout << "loading image " << k<<" ... ";
>  
>  reader1->Update();
>  
>   std::cout << "Done!" << std::endl;
>  QtSlicer::SetInputImage( reader1->GetOutput() );
>  ImageType::Pointer Image = reader1->GetOutput();
>  sBimageno->setValue(i);
> }
>  
>  
> the code in QtslicerTest.cxx
>  
> int main( int argc, char* argv[] )
> {
>   string QtoC;
>   QApplication myApp( argc, argv );
>   QtSlicer m_GUI( 0, 0, TRUE );
>   myApp.setMainWidget(&m_GUI);
>   m_GUI.setCaption( "Insight Qt Slicer" );
>   myApp.setStyle( new QPlatinumStyle );
>   QPalette p( QColor( 239, 239, 239 ) );
>   myApp.setPalette( p, TRUE );
>   typedef double                            PixelType;
>   typedef itk::Image<PixelType, 3>          ImageType;
>   typedef itk::ImageFileReader<ImageType>   ReaderType;
>   ReaderType::Pointer reader = ReaderType::New();
>  
>   QString s = QFileDialog::getExistingDirectory("/home",0,"get existing 
> directory","Choose a directory",TRUE );
>   QtoC=s.latin1();
>   QtoC=QtoC+"/0024.dcm";
>   s=QtoC;
>   m_GUI.leImage->setText(s);
>   reader->SetFileName( QtoC.c_str());
>   std::cout << "loading image " << QtoC.c_str() << " ... ";
>   try
>     {
>     reader->Update();
>     }
>   catch (itk::ExceptionObject & e)
>     {
>     std::cerr << "Exception in file reader " << std::endl;
>     std::cerr << e << std::endl;
>     return EXIT_FAILURE;
>     }
>  
>   std::cout << "Done!" << std::endl;
>   m_GUI.SetInputImage( reader->GetOutput() );
>  
>   try
>     {
>     m_GUI.exec();
>     }
>   catch (itk::ExceptionObject & e)
>     {
>     std::cerr << "Exception during GUI execution" << std::endl;
>     std::cerr << e << ; std::endl;
>     return EXIT_FAILURE;
>     }
>  
>   return 0;
> }
> 
> 
> _______________________________________________
> Insight-users mailing list
> Insight-users at itk.org
> http://www.itk.org/mailman/listinfo/insight-users