Using The Slab to Adjust The 3D Object Tutorial

This tutorial teaches you how to use the slab feature with a 3D object and three MPR orthogonal slices (Axial, Sagittal and Coronal).

  1. Start with the project you created in Creating a 3D object with MPR view.
  2. Run the program and you should see four cells: One for the 3D object and the other three for Axial, Sagittal and Coronal cells.
  3. This tutorial attains similar results to Creating a 3D object with MPR view but without the cross-hair. To remove the cross-hair, we need to edit the InitClass() method to set the ShowMPRCrossHair Property of all cells to false.

    VB
    axialCell.ShowMPRCrossHair = false 
    coronalCell.ShowMPRCrossHair = false 
    sagittalCell.ShowMPRCrossHair = false 
                                         
         

    C#
    axialCell.ShowMPRCrossHair = false; 
    coronalCell.ShowMPRCrossHair = false; 
    sagittalCell.ShowMPRCrossHair = false; 
                                                 
         

  4. Enable the slab property by adding the following line at the end of the method InitClass()

    VB
    control3D.ObjectsContainer.Objects(0).Slab.Enabled = True 
                                                 
         
    control3D.ObjectsContainer.Objects[0].Slab.Enabled = true; 
                                                 
         

  5. The InitClass() method should look as follows:

    VB
    Private Sub InitClass() 
         Dim MY_LICENSE_FILE As String = "d:\temp\TestLic.lic" 
                          
         ' Unlock DICOM support 
         Dim MY_DicomDEVELOPER_KEY As String = "xyz123abc" 
         RasterSupport.SetLicense(MY_LICENSE_FILE, MY_DicomDEVELOPER_KEY); 
                          
         ' Unlock Medical support 
         Dim MY_MedicalDEVELOPER_KEY As String = "abc123xyz" 
         RasterSupport.SetLicense(MY_LICENSE_FILE, MY_MedicalDEVELOPER_KEY); 
                          
         ' Unlock Medical 3D support 
         Dim MY_3DDEVELOPER_KEY As String = "123xyzabc" 
         RasterSupport.SetLicense(MY_LICENSE_FILE, MY_3DDEVELOPER_KEY); 
                          
         ' Create a new instance of the Codecs class, which will be used to load the images. 
         Dim _codecs As RasterCodecs = New RasterCodecs() 
         ' Create a new instance of the Medical Viewer. The layout will be divided to 2X2. 
         Dim viewer As MedicalViewer = New MedicalViewer(2, 2) 
         ' Fit the view to the whole form 
         viewer.Dock = DockStyle.Fill 
         ' Create the 3D control that will hold the 3D object. 
         Dim control3D As Medical3DControl = New Medical3DControl() 
         control3D.AddAction(MedicalViewerActionType.WindowLevel) 
         control3D.SetAction(MedicalViewerActionType.WindowLevel, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active) 
         Dim object3D As Medical3DObject = New Medical3DObject() 
         ' Add the newly created 3D object to the control. 
         control3D.ObjectsContainer.Objects.Add(object3D) 
         object3D.Image = _codecs.Load("C:\Users\Public\Documents\LEADTOOLS Images\image1.dcm") 
         ' Add the cell above to the MedicalViewer. 
         viewer.Cells.Add(control3D) 
         Controls.Add(viewer) 
                          
         ' Create a new cell that will hold the axial frame. 
         Dim axialCell As MedicalViewerMPRCell = New MedicalViewerMPRCell() 
         ' adjust some properties to view the cross hair. 
         axialCell.ShowMPRCrossHair = False 
         axialCell.DistinguishMPRByColor = True 
                          
         ' Assign this cell (axialCell) to the AxialFrame property of the Medical 3D control 
         control3D.AxialFrame = axialCell 
                          
         ' add the axial cell to the viewer 
         viewer.Cells.Add(axialCell) 
                          
         ' Create a new cell that will hold the coronal frame. 
         Dim coronalCell As MedicalViewerMPRCell = New MedicalViewerMPRCell() 
                          
         ' adjust some properties to view the cross hair. 
         coronalCell.ShowMPRCrossHair = False 
         coronalCell.DistinguishMPRByColor = True 
                          
         ' Assign this cell (coronalCell) to the CoronalFrame property of the Medical 3D control 
         control3D.CoronalFrame = coronalCell 
                          
         viewer.Cells.Add(coronalCell) 
                          
         ' Create a new cell that will hold the sagittal frame. 
         Dim sagittalCell As MedicalViewerMPRCell = New MedicalViewerMPRCell() 
                          
         ' adjust some properties to view the cross hair. 
         sagittalCell.ShowMPRCrossHair = False 
         sagittalCell.DistinguishMPRByColor = True 
                          
         ' Assign this cell (sagittalCell) to the SagittalFrame property of the Medical 3D control 
         control3D.SagittalFrame = sagittalCell 
                          
         viewer.Cells.Add(sagittalCell) 
                          
         ' Add the viewer as a child to the form. 
         Me.Controls.Add(viewer) 
                          
         control3D.ObjectsContainer.Objects(0).Slab.Enabled = True 
                     
         

    C#
    void InitClass() 
    { 
         string MY_LICENSE_FILE = "d:\\temp\\TestLic.lic"; 
                        
         // Unlock DICOM support 
         string MY_DicomDEVELOPER_KEY = "xyz123abc"; 
         RasterSupport.SetLicense(MY_LICENSE_FILE, MY_DicomDEVELOPER_KEY); 
                          
         // Unlock Medical support 
         string MY_MedicalDEVELOPER_KEY = "abc123xyz"; 
         RasterSupport.SetLicense(MY_LICENSE_FILE, MY_MedicalDEVELOPER_KEY); 
                          
         // Unlock Medical 3D support 
         string MY_3DDEVELOPER_KEY = "123xyzabc"; 
         RasterSupport.SetLicense(MY_LICENSE_FILE, MY_3DDEVELOPER_KEY); 
                          
         // Create a new instance of the Codecs class, which will be used to load the images. 
         RasterCodecs _codecs = new RasterCodecs(); 
         // Create a new instance of the Medical Viewer. The layout will be divided to 2X2. 
         MedicalViewer viewer = new MedicalViewer(2, 2); 
         // Fit the view to the whole form 
         viewer.Dock = DockStyle.Fill; 
         // Create the 3D control that will hold the 3D object. 
         Medical3DControl control3D = new Medical3DControl(); 
         control3D.AddAction(MedicalViewerActionType.WindowLevel); 
         control3D.SetAction(MedicalViewerActionType.WindowLevel, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active); 
         Medical3DObject object3D = new Medical3DObject(); 
         // Add the newly created 3D object to the control. 
         control3D.ObjectsContainer.Objects.Add(object3D); 
         object3D.Image = _codecs.Load(@"C:\Users\Public\Documents\LEADTOOLS Images\image1.dcm"); 
         // Add the cell above to the MedicalViewer. 
         viewer.Cells.Add(control3D); 
         Controls.Add(viewer); 
                          
         // Create a new cell that will hold the axial frame. 
         MedicalViewerMPRCell axialCell = new MedicalViewerMPRCell(); 
         // adjust some properties to view the cross hair. 
         axialCell.ShowMPRCrossHair = false; 
         axialCell.DistinguishMPRByColor = true; 
                          
         // Assign this cell (axialCell) to the AxialFrame property of the Medical 3D control 
         control3D.AxialFrame = axialCell; 
                          
         // add the axial cell to the viewer 
         viewer.Cells.Add(axialCell); 
                          
         // Create a new cell that will hold the coronal frame. 
         MedicalViewerMPRCell coronalCell = new MedicalViewerMPRCell(); 
                          
         // adjust some properties to view the cross hair. 
         coronalCell.ShowMPRCrossHair = false; 
         coronalCell.DistinguishMPRByColor = true; 
                          
         // Assign this cell (coronalCell) to the CoronalFrame property of the Medical 3D control 
         control3D.CoronalFrame = coronalCell; 
                          
         viewer.Cells.Add(coronalCell); 
                          
         // Create a new cell that will hold the sagittal frame. 
         MedicalViewerMPRCell sagittalCell = new MedicalViewerMPRCell(); 
                          
         // adjust some properties to view the cross hair. 
         sagittalCell.ShowMPRCrossHair = false; 
         sagittalCell.DistinguishMPRByColor = true; 
                          
         // Assign this cell (sagittalCell) to the SagittalFrame property of the Medical 3D control 
         control3D.SagittalFrame = sagittalCell; 
                          
         viewer.Cells.Add(sagittalCell); 
                          
         // Add the viewer as a child to the form. 
         this.Controls.Add(viewer); 
                          
         control3D.ObjectsContainer.Objects[0].Slab.Enabled = true; 
    } 
                     
         

  6. Run the program and you should see four windows: One for the 3D object and the other three for the orthogonal frames. There should be a green dotted line surrounding the three orthogonal plane cells. Resize the rectangle by clicking-and- dragging the green border.

Note: Now you will need to have DICOMDIR files for the next step. You can download a sample from our site. Download the file from here (Download chest_ct_compressed_subset_for_3d_tutorial.zip), and extract the file to "C:\Leadtools_DICOMDIR". For more information on building 3D objects from a DICOMDIR, please see Loading a DICOMDIR To Create a 3D Object.

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