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DICOM Set Window Level and Window Width

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T O P I C R E V I E W
PatrickH	Posted - Jan 30 2019 : 02:34:21 Hi, we have a DICOM-File with Preset-Values (Window Level 2047 and Window Width 4095).. a good view would be by Level=152, Width=1616. Is it possible to change this values to customize the view? Like ImageEnView1->Proc->SetWWWL(x, y) Best Regards, Patrick
9 L A T E S T R E P L I E S (Newest First)
xequte	Posted - Oct 29 2019 : 16:21:43 Hi Please email me for a fix for this. Nigel Xequte Software www.imageen.com
rbeaulieu	Posted - Oct 26 2019 : 12:52:56 Hi Nigel, Sorry, I forgot to tell that I want open the image in a window width and level ajustement goal, so I load image with this code : IEV1.IO.NativePixelFormat := true; IEV1.IO.Params.DICOM_Range := iedrSetBlackWhite; IEV1.IO.LoadFromFile(AFName); The image at le left is WW and WC adjusted by setting black and white level. The function work well for DICOM image with rescale slope set to 1.0. The same image at the right is correctly show in a popular DICOM viewer. Regards.
xequte	Posted - Oct 23 2019 : 15:34:07 Hi Regent This image looks OK to me. Can you clarify your requirements: Nigel Xequte Software www.imageen.com
rbeaulieu	Posted - Oct 22 2019 : 18:08:36 Hi, How can I correctly display the attached DICOM image using WWidth and WLevel (range iedrSetBlackWhite). I think the issue has something to do with rescaleslope, wich is 2.81 and data type valid range exceed in code (word = trunc(double) causing word value restart from 0). Someone can help ? (sample dicom file attached) Regent. attach/rbeaulieu/2019102218416_Chest.zip 2322.62 KB Regards.
xequte	Posted - Feb 03 2019 : 17:46:44 Hi In the next release you can control it using IEGlobalSettings().IOParamDefaults: https://www.imageen.com/help/TIEImageEnGlobalSettings.IOParamDefaults.html You can email me for a pre-release. Nigel Xequte Software www.imageen.com
PatrickH	Posted - Feb 01 2019 : 05:53:00 Hi Nigel, if i load the file (multiple frames) like this: ImageEnMView1->MIO->NativePixelFormat = true; ImageEnMView1->MIO->LoadFromFile("D:\\ZZ_Temp\\Multi\\I24.dcm"); // multiframe file the PixelValues are adjusted (maybe) in "iedicom.pas" procedure TDicomReadContext.AdjustRange16g(); begin case IOParams.DICOM_Range of iedrAdjust: AdjustRange16g_adjust(); iedrSetBlackWhite: AdjustRange16g_set(); end; end; The Usermanual says: TIOParams.DICOM_Range Declaration property DICOM_Range: TIEDicomRange; Description Specifies how to handle the pixel visibility range. Default: iedrAdjust so if i load the File the Bitmaps are already modified. Is there a way to set DICOM_Range to iedrSetBlackWhite before loading a file to ImageEnMView to get the unmodified Images? Regards Patrick
xequte	Posted - Jan 31 2019 : 14:56:52 Hi Patrick After loading you can iterate through the bitmaps using ImageEnMView1.GetTIEBitmap(); https://www.imageen.com/help/TImageEnMView.GetTIEBitmap.html Wrap this and the loading code in LockUpdate/UnlockUpdate calls to prevent onscreen ugliness. Alternatively, you can load your dicom image into a TIEBitmap, and then append that to the TImageEnMView (iterating if the image has multiple frames). Nigel Xequte Software www.imageen.com
PatrickH	Posted - Jan 31 2019 : 05:38:50 Hi, ok, now it works great with TImageEnView TIEBitmap bmp = new TIEBitmap(); TImageEnIO pIO = new TImageEnIO(bmp); pIO->NativePixelFormat = true; pIO->Params->DICOM_Range = iedrSetBlackWhite; pIO->LoadFromFile("D:\\slice-205.dcm"); double dcenter = pIO->Params->DICOM_WindowCenterOffset + this->edLevel->Text.ToDouble(); double dMin = dcenter - 0.5 - (this->edWidth->Text.ToDouble() -1) /2; double dMax = dcenter - 0.5 + (this->edWidth->Text.ToDouble() -1) /2; bmp->BlackValue = dMin; bmp->WhiteValue = dMax; this->img->IEBitmap->Assign(bmp); The only thing left is the same with MultiSlice-Files. Here we use TImageEnMView to load the File. ImageEnMView1->MIO->Params->DICOM_Range = iedrSetBlackWhite; ImageEnMView1->MIO->LoadFromFile("D:\\Multi\\I24.dcm"); Params is here not possible because ImageEnMView1->MIO->Params = NULL Is it possible to set the DICOM_Range before loading the File to TImageEnMView? Patrick
xequte	Posted - Jan 30 2019 : 19:17:23 Hi You can apply custom Windows center and width values by setting ImageEnView1.BlackValue and WhiteValue: ImageEnView1.IEBitmap.BlackValue := WindowCenter - Round(0.5 * WindowWidth); ImageEnView1.IEBitmap.WhiteValue := WindowCenter + Trunc(0.5 * WindowWidth); ImageEnView1.Update(); Also see: https://www.imageen.com/help/TIOParams.DICOM_WindowCenterOffset.html https://www.imageen.com/help/TIOParams.DICOM_Range.html Nigel Xequte Software www.imageen.com