[vtkusers] Please help! How can I store all the images from a dicom file?

[gurugurupalm]

Dear VTK user:

  I am using vtk 4.4 to read in a Dicom file and try
to show the images to a MFC project. 
Will the following code store all the images from the
Dicom file I just read?  


				dcm_page=dicom_page.m_csPath;//get the dicom file
path location
	
				reader = vtkDICOMImageReader::New();
				viewer = vtkImageViewer2::New();
				
				reader->SetFileName(dcm_page);
	
	     //check how many images in this dicom file
				int number_of_frames = 1; 
				if (m_FileAttributes.GetSize() > 0) 
				{
					for (int i=0;i<m_FileAttributes.GetSize();i++)
					{
						CString cts; 
						cts = m_FileAttributes[i].Left(9);
						if (cts == "0028,0008") 
						{
							for (int j = 0; j <
m_FileAttributes[i].GetLength();j++)
								if (m_FileAttributes[i][j] == '[')
								{
									cts.Empty();
									j++;
									while (m_FileAttributes[i][j] != ',')
									{		
										cts += m_FileAttributes[i][j]; 
										j++;
									}

									number_of_frames =  _ttoi(cts); 
									break;
								}
						}
					}
				}

				//begin to put all the images to the list , where
std::list<vtkImageActor *>; 
			  for(int i=0;i<=number_of_frames;i++)
				{
					viewer->SetInput(reader->GetOutput());
					lst.push_back(viewer->GetImageActor());
					reader->Update();
				}
				
				reader->Delete();


Because when I try to display the image (say the first
one, then second one, ...), they all look the same. 
-----------------------------------------------
		renChild->SetViewport(0, 0.0, 1.0, 1.0);
		vtkImageActor *a = pDoc->GetDCMImage(15);//show a
particulr image from the dicom file
		renChild->GetProps()->RemoveAllItems();
		renChild->AddActor(a);
		renChild->GetActiveCamera()->SetViewUp (0, 1, 0);
		renChild->GetActiveCamera()->SetPosition (0, 0, 1);
		renChild->GetActiveCamera()->SetFocalPoint (0, 0,
0);
	
renChild->GetActiveCamera()->ComputeViewPlaneNormal();
		renChild->ResetCamera();
		renChild->GetActiveCamera()->Dolly(1.5);
		renChild->Render();
-------------------------------------------------		
vtkImageActor* CVtkDoc::GetDCMImage(int which_one)
{
	if( current_mode == DICOM)
	{
		int index = 0; 
		if (index == which_one) 
			return lst.front();
		else
		{
			std::list<vtkImageActor *>::iterator ptr =
lst.begin(); 
			for (ptr; ptr != lst.end();ptr++)
				if (index == which_one) 
					return (*ptr); 
				else 
					index ++; 
		}
	}
	return NULL;
}

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