Declaration
property DICOM_Range: TIEDicomRange;
Description
Specifies how to handle the pixel visibility range when loading a DICOM image.
Either the pixel values are automatically scaled (image is modified) or the display values are adjusted (image is not modified).
| Value | Description |
| iedrAdjust | Pixels values within the image are scaled to the appropriate visual range |
| iedrSetBlackWhite | Pixels values are maintained, but WhiteValue and BlackValue are set to display the image correctly |
Note:
- If you are using a
TIEMultiBitmap or
TImageEnMView, you can use
DuplicateCompressionInfo to propogate the parameter to all frames
- DICOM_Range range must be set to iedrAdjust when saving (which will remove the
DICOM_RescaleSlope and
DICOM_RescaleIntercept tags)
- If you use iedrSetBlackWhite, you will need to reset the
WhiteValue and
BlackValue before loading the next image, i.e.
ImageEnView1.IEBitmap.BlackValue := 0;
ImageEnView1.IEBitmap.WhiteValue := 0;Default: iedrAdjust (Specified by
IOParamDefaults)
Example
ImageEnView1.IO.NativePixelFormat := true;
ImageEnView1.IO.Params.DICOM_Range := iedrSetBlackWhite;
ImageEnView1.IO.LoadFromFile( 'D:\slice91.dcm' );
dcenter := ImageEnView1.IO.Params.DICOM_WindowCenterOffset + StrToFloat( edtLevel.Text );
dMin := dcenter - 0.5 - StrToFloat( edtWidth.Text ) - 1) / 2;
dMax := dcenter - 0.5 + StrToFloat( edtWidth.Text ) - 1) / 2;
ImageEnView1.IEBitmap.BlackValue := dMin;
ImageEnView1.IEBitmap.WhiteValue := dMax;
ImageEnView1.Update();