LEADTOOLS Medical (Leadtools.Dicom assembly)
LEAD Technologies, Inc

SetModalityLut(Int32,DicomModalityLutAttributes,Int32[],DicomSetImageFlags) Method

Example 







Leadtools.Dicom Namespace > DicomDataSet Class > SetModalityLut Method : SetModalityLut(Int32,DicomModalityLutAttributes,Int32[],DicomSetImageFlags) Method
A zero-based index that identifies the frame number in the dataset. If the dataset does not support Multi-frames, this parameter is ignored.
The Modality LUT attributes to set.
Array of integers that holds the "LUT Data".
determines how the modality LUT is stored
Sets the attributes that describe the Modality LUT. .NET support WinRT support Silverlight support
Syntax
public void SetModalityLut( 
   int frameIndex,
   DicomModalityLutAttributes attributes,
   int[] data,
   DicomSetImageFlags flags
)
'Declaration
 
Public Overloads Sub SetModalityLut( _
   ByVal frameIndex As Integer, _
   ByVal attributes As DicomModalityLutAttributes, _
   ByVal data() As Integer, _
   ByVal flags As DicomSetImageFlags _
) 
'Usage
 
Dim instance As DicomDataSet
Dim frameIndex As Integer
Dim attributes As DicomModalityLutAttributes
Dim data() As Integer
Dim flags As DicomSetImageFlags
 
instance.SetModalityLut(frameIndex, attributes, data, flags)
public void SetModalityLut( 
   int frameIndex,
   DicomModalityLutAttributes attributes,
   int[] data,
   DicomSetImageFlags flags
)
ObjectiveC Syntax
 function Leadtools.Dicom.DicomDataSet.SetModalityLut(Int32,DicomModalityLutAttributes,Int32[],DicomSetImageFlags)( 
   frameIndex ,
   attributes ,
   data ,
   flags 
)

public:
void SetModalityLut( 
   int frameIndex,
   DicomModalityLutAttributes^ attributes,
   array<int>^ data,
   DicomSetImageFlags flags
)

Parameters

frameIndex
A zero-based index that identifies the frame number in the dataset. If the dataset does not support Multi-frames, this parameter is ignored.
attributes
The Modality LUT attributes to set.
data
Array of integers that holds the "LUT Data".
flags
determines how the modality LUT is stored
Remarks
This method will set the attributes of the "Modality LUT Module".

If you are trying to set the "Rescale Intercept" (0028,1052) and "Rescale Slope" (0028,1053), set IsRescaleSlopeIntercept to true, and populate RescaleIntercept and DicomModalityLutAttributes.RescaleSlope with the new values. You can also populate RescaleType if you want to set "Rescale Type" (0028,1054).

If you are trying to set the elements under "Modality LUT Sequence", set IsModalityLutSequence to true, and populate FirstStoredPixelValueMapped, NumberOfEntries, EntryBits, and LutType. In this case, data should hold the "LUT Data" (0028,3006).


The Multi-frame Functional Groups module may have a Shared Functional Groups Sequence item, and/or a Per-frame Functional Groups Sequence item. Either of these items may have a Pixel Value Transformation Sequence (0028,9145) item. The flags parameter can be used to add or modify existing information in the Pixel Value Transformation Sequence.

The following flags are used only if the Pixel Value Transformation Sequence does not already exist.
The specific elements that are read or updated when using these flags are shown below:

(0028,9145) Pixel Value Transformation Sequence child elements
Tag Name
(0028,1052) Rescale Intercept
(0028,1053) Rescale Slope
(0028,1054) Rescale Type


For a detailed discussion on Multi-frame Functional Groups see the topic Multi-frame Functional Groups.
Example
Copy CodeCopy Code   
''' 
   Private Sub DicomDataSet_SetModalityLut2Example()
      Dim ds As DicomDataSet = New DicomDataSet()
      Dim flags As DicomDataSetInitializeFlags = DicomDataSetInitializeFlags.ExplicitVR Or DicomDataSetInitializeFlags.LittleEndian Or _
         DicomDataSetInitializeFlags.AddMandatoryElementsOnly Or DicomDataSetInitializeFlags.AddMandatoryModulesOnly
      ' Initialize with class that supports multiframe functional groups
      ds.Initialize(DicomClassType.EnhancedMRImageStorage, flags)

      ' Delete these items -- they will get added again later in the sample
      ' * Shared Functional Group2 Sequence
      ' * Per-frame Functional Group2 Sequence

      Dim element As DicomElement = ds.FindFirstElement(Nothing, DicomTag.PerFrameFunctionalGroupsSequence, False)
      If Not element Is Nothing Then
         ds.DeleteElement(element)
      End If

      element = ds.FindFirstElement(Nothing, DicomTag.SharedFunctionalGroupsSequence, False)
      If Not element Is Nothing Then
         ds.DeleteElement(element)
      End If

      ' Add a modality LUT on 0th frame
      Dim modalityLutAttributes As DicomModalityLutAttributes = New DicomModalityLutAttributes()

      modalityLutAttributes.IsModalityLutSequence = False
      modalityLutAttributes.IsRescaleSlopeIntercept = True
      modalityLutAttributes.RescaleType = "UNSPECIFIED"
      modalityLutAttributes.RescaleIntercept = -128.0
      modalityLutAttributes.RescaleSlope = 1.0
      ds.SetModalityLut(0, modalityLutAttributes, Nothing, DicomSetImageFlags.MfgModalityLutPerFrame)

      ' Add a second modality LUT on the 1st frame
      modalityLutAttributes.RescaleIntercept = -156.0
      modalityLutAttributes.RescaleSlope = 1.1
      ds.SetModalityLut(1, modalityLutAttributes, Nothing, DicomSetImageFlags.MfgModalityLutPerFrame)

      ' Retrieve the modality LUT attributes from second frame (frameIndex == 1)
      Dim modalityLutAttributes2 As DicomModalityLutAttributes = ds.GetModalityLutAttributes(1)

      Dim sMsg As String = String.Format("Slope: {0}" & Constants.vbLf & "Intercept: {1}" & Constants.vbLf & "RescaleType {2}", _
                                         modalityLutAttributes2.RescaleSlope, modalityLutAttributes2.RescaleIntercept, modalityLutAttributes2.RescaleType)
      MessageBox.Show(sMsg)

      ' Finally, delete the second modality LUT
      ds.DeleteModalityLut(1, DicomSetImageFlags.None)

      ' Save the file
      ds.Save(Path.Combine(LEAD_VARS.ImagesDir, "Test.dcm"), DicomDataSetSaveFlags.None)
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
/// 
   void DicomDataSet_SetModalityLut2Example()
   {
      DicomDataSet ds = new DicomDataSet();
      DicomDataSetInitializeFlags flags =
         DicomDataSetInitializeFlags.ExplicitVR |
         DicomDataSetInitializeFlags.LittleEndian |
         DicomDataSetInitializeFlags.AddMandatoryElementsOnly |
         DicomDataSetInitializeFlags.AddMandatoryModulesOnly
         ;
      // Initialize with class that supports multiframe functional groups
      ds.Initialize(DicomClassType.EnhancedMRImageStorage, flags);

      // Delete these items -- they will get added again later in the sample
      // * Shared Functional Group2 Sequence
      // * Per-frame Functional Group2 Sequence

      DicomElement element = ds.FindFirstElement(null, DicomTag.PerFrameFunctionalGroupsSequence, false);
      if (element != null)
         ds.DeleteElement(element);

      element = ds.FindFirstElement(null, DicomTag.SharedFunctionalGroupsSequence, false);
      if (element != null)
         ds.DeleteElement(element);

      // Add a modality LUT on 0th frame
      DicomModalityLutAttributes modalityLutAttributes = new DicomModalityLutAttributes();

      modalityLutAttributes.IsModalityLutSequence = false;
      modalityLutAttributes.IsRescaleSlopeIntercept = true;
      modalityLutAttributes.RescaleType = "UNSPECIFIED";
      modalityLutAttributes.RescaleIntercept = -128.0;
      modalityLutAttributes.RescaleSlope = 1.0;
      ds.SetModalityLut(0, modalityLutAttributes, null, DicomSetImageFlags.MfgModalityLutPerFrame);

      // Add a second modality LUT on the 1st frame
      modalityLutAttributes.RescaleIntercept = -156.0;
      modalityLutAttributes.RescaleSlope = 1.1;
      ds.SetModalityLut(1, modalityLutAttributes, null, DicomSetImageFlags.MfgModalityLutPerFrame);

      // Retrieve the modality LUT attributes from second frame (frameIndex == 1)
      DicomModalityLutAttributes modalityLutAttributes2 = ds.GetModalityLutAttributes(1);

      string sMsg = string.Format("Slope: {0}\nIntercept: {1}\nRescaleType {2}", 
         modalityLutAttributes2.RescaleSlope, 
         modalityLutAttributes2.RescaleIntercept,
         modalityLutAttributes2.RescaleType);
      MessageBox.Show(sMsg);

      // Finally, delete the second modality LUT
      ds.DeleteModalityLut(1, DicomSetImageFlags.None);

      // Save the file
      ds.Save(Path.Combine(LEAD_VARS.ImagesDir, "Test.dcm"), DicomDataSetSaveFlags.None);
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
/// 
async Task DicomDataSet_SetModalityLut2Example()
{
   DicomDataSet ds = new DicomDataSet();
   DicomDataSetInitializeFlags flags =
      DicomDataSetInitializeFlags.ExplicitVR |
      DicomDataSetInitializeFlags.LittleEndian |
      DicomDataSetInitializeFlags.AddMandatoryElementsOnly |
      DicomDataSetInitializeFlags.AddMandatoryModulesOnly
      ;
   // Initialize with class that supports multiframe functional groups
   ds.Initialize(DicomClassType.EnhancedMRImageStorage, flags);

   // Delete these items -- they will get added again later in the sample
   // * Shared Functional Group2 Sequence
   // * Per-frame Functional Group2 Sequence

   DicomElement element = ds.FindFirstElement(null, DicomTagConstants.PerFrameFunctionalGroupsSequence, false);
   if (element != null)
      ds.DeleteElement(element);

   element = ds.FindFirstElement(null, DicomTagConstants.SharedFunctionalGroupsSequence, false);
   if (element != null)
      ds.DeleteElement(element);

   // Add a modality LUT on 0th frame
   DicomModalityLutAttributes modalityLutAttributes = new DicomModalityLutAttributes();

   modalityLutAttributes.IsModalityLutSequence = false;
   modalityLutAttributes.IsRescaleSlopeIntercept = true;
   modalityLutAttributes.RescaleType = "UNSPECIFIED";
   modalityLutAttributes.RescaleIntercept = -128.0;
   modalityLutAttributes.RescaleSlope = 1.0;
   ds.SetModalityLut(0, modalityLutAttributes, null, DicomSetImageFlags.MfgModalityLutPerFrame);

   // Add a second modality LUT on the 1st frame
   modalityLutAttributes.RescaleIntercept = -156.0;
   modalityLutAttributes.RescaleSlope = 1.1;
   ds.SetModalityLut(1, modalityLutAttributes, null, DicomSetImageFlags.MfgModalityLutPerFrame);

   // Retrieve the modality LUT attributes from second frame (frameIndex == 1)
   DicomModalityLutAttributes modalityLutAttributes2 = ds.GetModalityLutAttributes(1);

   string sMsg = string.Format("Slope: {0}\nIntercept: {1}\nRescaleType {2}",
      modalityLutAttributes2.RescaleSlope,
      modalityLutAttributes2.RescaleIntercept,
      modalityLutAttributes2.RescaleType);
   Debug.WriteLine(sMsg);

   // Finally, delete the second modality LUT
   ds.DeleteModalityLut(1, DicomSetImageFlags.None);

   // Save the file
   string dicomFileNameOutput = "Test.dcm";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(dicomFileNameOutput);
   ILeadStream streamOutput = LeadStreamFactory.Create(saveFile);
   using (IDisposable disposableOUT = streamOutput as IDisposable)
   {
      await ds.SaveAsync(streamOutput, DicomDataSetSaveFlags.None);
   }
}
void DicomDataSet_SetModalityLut2Example(Stream outputStream)
{
   DicomDataSet ds = new DicomDataSet();
   DicomDataSetInitializeFlags flags =
      DicomDataSetInitializeFlags.ExplicitVR |
      DicomDataSetInitializeFlags.LittleEndian |
      DicomDataSetInitializeFlags.AddMandatoryElementsOnly |
      DicomDataSetInitializeFlags.AddMandatoryModulesOnly
      ;
   // Initialize with class that supports multiframe functional groups
   ds.Initialize(DicomClassType.EnhancedMRImageStorage, flags);

   // Delete these items -- they will get added again later in the sample
   // * Shared Functional Group2 Sequence
   // * Per-frame Functional Group2 Sequence

   DicomElement element = ds.FindFirstElement(null, DicomTag.PerFrameFunctionalGroupsSequence, false);
   if (element != null)
      ds.DeleteElement(element);

   element = ds.FindFirstElement(null, DicomTag.SharedFunctionalGroupsSequence, false);
   if (element != null)
      ds.DeleteElement(element);

   // Add a modality LUT on 0th frame
   DicomModalityLutAttributes modalityLutAttributes = new DicomModalityLutAttributes();

   modalityLutAttributes.IsModalityLutSequence = false;
   modalityLutAttributes.IsRescaleSlopeIntercept = true;
   modalityLutAttributes.RescaleType = "UNSPECIFIED";
   modalityLutAttributes.RescaleIntercept = -128.0;
   modalityLutAttributes.RescaleSlope = 1.0;
   ds.SetModalityLut(0, modalityLutAttributes, null, DicomSetImageFlags.MfgModalityLutPerFrame);

   // Add a second modality LUT on the 1st frame
   modalityLutAttributes.RescaleIntercept = -156.0;
   modalityLutAttributes.RescaleSlope = 1.1;
   ds.SetModalityLut(1, modalityLutAttributes, null, DicomSetImageFlags.MfgModalityLutPerFrame);

   // Retrieve the modality LUT attributes from second frame (frameIndex == 1)
   DicomModalityLutAttributes modalityLutAttributes2 = ds.GetModalityLutAttributes(1);

   string sMsg = string.Format("Slope: {0}\nIntercept: {1}\nRescaleType {2}",
      modalityLutAttributes2.RescaleSlope,
      modalityLutAttributes2.RescaleIntercept,
      modalityLutAttributes2.RescaleType);
   Debug.WriteLine(sMsg);

   // Finally, delete the second modality LUT
   ds.DeleteModalityLut(1, DicomSetImageFlags.None);

   // Save the file
   ds.Save(outputStream, DicomDataSetSaveFlags.None);
}
Private Sub DicomDataSet_SetModalityLut2Example(ByVal outputStream As Stream)
   Dim ds As DicomDataSet = New DicomDataSet()
      Dim flags As DicomDataSetInitializeFlags = DicomDataSetInitializeFlags.ExplicitVR Or _
                                                 DicomDataSetInitializeFlags.LittleEndian Or _
                                                 DicomDataSetInitializeFlags.AddMandatoryElementsOnly Or _
                                                 DicomDataSetInitializeFlags.AddMandatoryModulesOnly
   ' Initialize with class that supports multiframe functional groups
   ds.Initialize(DicomClassType.EnhancedMRImageStorage, flags)

   ' Delete these items -- they will get added again later in the sample
   ' * Shared Functional Group2 Sequence
   ' * Per-frame Functional Group2 Sequence

   Dim element As DicomElement = ds.FindFirstElement(Nothing, DicomTag.PerFrameFunctionalGroupsSequence, False)
   If Not element Is Nothing Then
      ds.DeleteElement(element)
   End If

   element = ds.FindFirstElement(Nothing, DicomTag.SharedFunctionalGroupsSequence, False)
   If Not element Is Nothing Then
      ds.DeleteElement(element)
   End If

   ' Add a modality LUT on 0th frame
   Dim modalityLutAttributes As DicomModalityLutAttributes = New DicomModalityLutAttributes()

   modalityLutAttributes.IsModalityLutSequence = False
   modalityLutAttributes.IsRescaleSlopeIntercept = True
   modalityLutAttributes.RescaleType = "UNSPECIFIED"
   modalityLutAttributes.RescaleIntercept = -128.0
   modalityLutAttributes.RescaleSlope = 1.0
   ds.SetModalityLut(0, modalityLutAttributes, Nothing, DicomSetImageFlags.MfgModalityLutPerFrame)

   ' Add a second modality LUT on the 1st frame
   modalityLutAttributes.RescaleIntercept = -156.0
   modalityLutAttributes.RescaleSlope = 1.1
   ds.SetModalityLut(1, modalityLutAttributes, Nothing, DicomSetImageFlags.MfgModalityLutPerFrame)

   ' Retrieve the modality LUT attributes from second frame (frameIndex == 1)
   Dim modalityLutAttributes2 As DicomModalityLutAttributes = ds.GetModalityLutAttributes(1)

      Dim sMsg As String = String.Format("Slope: {0}" _
                                         & Constants.vbLf _
                                         & "Intercept: {1}" _
                                         & Constants.vbLf _
                                         & "RescaleType {2}", _
                                         modalityLutAttributes2.RescaleSlope, _
                                         modalityLutAttributes2.RescaleIntercept, _
                                         modalityLutAttributes2.RescaleType)
   Debug.WriteLine(sMsg)

   ' Finally, delete the second modality LUT
   ds.DeleteModalityLut(1, DicomSetImageFlags.None)

   ' Save the file
   ds.Save(outputStream, DicomDataSetSaveFlags.None)
End Sub
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

DicomDataSet Class
DicomDataSet Members
Overload List
GetModalityLutData Method
GetModalityLutAttributes Method
DeleteModalityLut Method

 

 

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