# Error: Could not load: 801: Unnamed Series as a Scalar Volume

**URL:** <https://discourse.slicer.org/t/error-could-not-load-801-unnamed-series-as-a-scalar-volume/15119>\
**Category:** Support\
**Tags:** dicom\
**Created:** [December 17, 2020, 8:45pm UTC](https://discourse.slicer.org/t/error-could-not-load-801-unnamed-series-as-a-scalar-volume/15119 "2020-12-17T20:45:44Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Mgi](https://avatars.discourse-cdn.com/v4/letter/m/b19c9b/32.png) [@Mgi](https://discourse.slicer.org/u/Mgi)\
**Post date:** [December 17, 2020, 8:45pm UTC](https://discourse.slicer.org/t/error-could-not-load-801-unnamed-series-as-a-scalar-volume/15119/1 "2020-12-17T20:45:44Z")

</div>

Hi Forum, I’m tryin to load a DICOM file from PET series and DICOM RT from PET segmentation but an error message appear: “Could not load Unnamed Series as a Scalar Volume”. Help me! please! I’m using Windows 10 OS and 3D slicer version: 4.11.20200930  
I attached the bug report:  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - Session start time …: 2020-12-17 17:36:52  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - Slicer version …: 4.11.20200930 (revision 29402 / 002be18) win-amd64 - installed release  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - Operating system …: Windows / Personal / (Build 19041, Code Page 65001) - 64-bit  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - Memory …: 6019 MB physical, 16771 MB virtual  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - CPU …: GenuineIntel , 8 cores, 8 logical processors  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - VTK configuration …: OpenGL2 rendering, TBB threading  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - Qt configuration …: version 5.15.1, with SSL, requested OpenGL 3.2 (compatibility profile)  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - Developer mode enabled …: no  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - Prefer executable CLI …: yes  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - Application path …: C:/Users/MARCO/AppData/Local/NA-MIC/Slicer 4.11.20200930/bin  
[DEBUG][Qt] 17.12.2020 17:36:52 [] (unknown:0) - Additional module paths …: C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/DCMQI/lib/Slicer-4.11/cli-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PET-IndiC/lib/Slicer-4.11/cli-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PET-IndiC/lib/Slicer-4.11/qt-scripted-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PETDICOMExtension/lib/Slicer-4.11/cli-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PETDICOMExtension/lib/Slicer-4.11/qt-scripted-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PETTumorSegmentation/lib/Slicer-4.11/qt-loadable-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PETTumorSegmentation/lib/Slicer-4.11/qt-scripted-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/mpReview/lib/Slicer-4.11/qt-scripted-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/SlicerDevelopmentToolbox/lib/Slicer-4.11/qt-scripted-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/NvidiaAIAssistedAnnotation/lib/Slicer-4.11/qt-scripted-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/QuantitativeReporting/lib/Slicer-4.11/qt-scripted-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/SlicerRT/lib/Slicer-4.11/cli-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/SlicerRT/lib/Slicer-4.11/qt-loadable-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/SlicerRT/lib/Slicer-4.11/qt-scripted-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/SlicerRadiomics/lib/Slicer-4.11/cli-modules, C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/SlicerRadiomics/lib/Slicer-4.11/qt-scripted-modules  
[DEBUG][Python] 17.12.2020 17:37:08 [Python] (C:\Users\MARCO\AppData\Local\NA-MIC\Slicer 4.11.20200930\lib\Python\Lib\site-packages\pydicom\datadict.py:432) - Reversing DICOM dictionary so can look up tag from a keyword…  
[WARNING][Qt] 17.12.2020 17:37:18 [] (unknown:0) - libpng warning: iCCP: known incorrect sRGB profile  
[DEBUG][Python] 17.12.2020 17:37:29 [Python] (C:\Users\MARCO\AppData\Local\NA-MIC\Slicer 4.11.20200930\lib\Slicer-4.11\qt-scripted-modules\SubjectHierarchyPlugins\AbstractScriptedSubjectHierarchyPlugin.py:36) - Scripted subject hierarchy plugin registered: Annotations  
[DEBUG][Python] 17.12.2020 17:37:37 [Python] (C:\Users\MARCO\AppData\Local\NA-MIC\Slicer 4.11.20200930\lib\Slicer-4.11\qt-scripted-modules\SubjectHierarchyPlugins\AbstractScriptedSubjectHierarchyPlugin.py:36) - Scripted subject hierarchy plugin registered: SegmentStatistics  
[DEBUG][Python] 17.12.2020 17:37:37 [Python] (C:\Users\MARCO\AppData\Local\NA-MIC\Slicer 4.11.20200930\lib\Slicer-4.11\qt-scripted-modules\SubjectHierarchyPlugins\AbstractScriptedSubjectHierarchyPlugin.py:36) - Scripted subject hierarchy plugin registered: SegmentEditor  
[INFO][Python] 17.12.2020 17:37:42 [Python] (C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/NvidiaAIAssistedAnnotation/lib/Slicer-4.11/qt-scripted-modules/SegmentEditorNvidiaAIAA.py:32) - This plugin dir: C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/NvidiaAIAssistedAnnotation/lib/Slicer-4.11/qt-scripted-modules  
[DEBUG][Qt] 17.12.2020 17:37:39 [] (unknown:0) - Switch to module: “Welcome”  
[INFO][Stream] 17.12.2020 17:37:42 [] (unknown:0) - This plugin dir: C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/NvidiaAIAssistedAnnotation/lib/Slicer-4.11/qt-scripted-modules  
[DEBUG][Qt] 17.12.2020 17:37:49 [] (unknown:0) - Switch to module: “DICOM”  
[ERROR][Python] 17.12.2020 17:38:08 [Python] (C:\Users\MARCO\AppData\Local\NA-MIC\Slicer 4.11.20200930\lib\Slicer-4.11\qt-scripted-modules\DICOMLib\DICOMUtils.py:680) - DICOM Plugin failed: SUVFactorCalculator CLI did not complete cleanly  
[DEBUG][Qt] 17.12.2020 17:38:06 [] (unknown:0) - Found CommandLine Module, target is C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PETDICOMExtension/lib/Slicer-4.11/cli-modules/SUVFactorCalculator.exe  
[DEBUG][Qt] 17.12.2020 17:38:06 [] (unknown:0) - ModuleType: CommandLineModule  
[DEBUG][Qt] 17.12.2020 17:38:06 [] (unknown:0) - SUV Factor Calculator command line:

C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PETDICOMExtension/lib/Slicer-4.11/cli-modules/SUVFactorCalculator.exe --returnparameterfile C:/Users/MARCO/AppData/Local/Temp/Slicer/14456\_J0RfKqWdbF.params --petDICOMPath C:\Users\MARCO\AppData\Local\Temp\tmpkvj6usmj --petSeriesInstanceUID 1.2.826.0.1.3680043.2.228.6.2054.1608231753508 --rwvmDICOMPath C:/Users/MARCO/data/FCDN\_NEOADJ\_BREAST\_001\_NoPatientID\_4866\_12/RawVolume/12\_PET EANM STD 10.10 PET/CT MAMA PRONO --seriesDescription PET SUV Factors --seriesNumber 1000 --instanceNumber “1”  
[DEBUG][Qt] 17.12.2020 17:38:08 [] (unknown:0) - SUV Factor Calculator standard output:

saving numbers to C:/Users/MARCO/AppData/Local/Temp/Slicer/14456\_J0RfKqWdbF.params  
[ERROR][VTK] 17.12.2020 17:38:08 [vtkSlicerCLIModuleLogic (00000179590C7190): SUV Factor Calculator standard error:

WARNING: In D:\D\S\Slicer-0-build\ITK\Modules\IO\GDCM\src\itkGDCMSeriesFileNames.cxx, line 102  
GDCMSeriesFileNames (000001E2FD4C9850)] (D:\D\S\Slicer-0\Base\QTCLI\vtkSlicerCLIModuleLogic.cxx:2017) - No Series were found

Selected series instance UID not found in PET dicom path!  
ERROR: Failed to compute SUV  
[ERROR][VTK] 17.12.2020 17:38:08 [vtkSlicerCLIModuleLogic (00000179590C7190)] (D:\D\S\Slicer-0\Base\QTCLI\vtkSlicerCLIModuleLogic.cxx:2048) - SUV Factor Calculator completed with errors  
[INFO][VTK] 17.12.2020 17:38:08 [vtkMRMLScene (000001795CCB0D00)] (D:\D\S\Slicer-0\Libs\MRML\Core\vtkMRMLScene.cxx:316) - vtkMRMLScene::Clear  
[CRITICAL][Stream] 17.12.2020 17:38:08 [] (unknown:0) - Traceback (most recent call last):  
[CRITICAL][Stream] 17.12.2020 17:38:08 [] (unknown:0) - File “C:\Users\MARCO\AppData\Local\NA-MIC\Slicer 4.11.20200930\lib\Slicer-4.11\qt-scripted-modules\DICOMLib\DICOMUtils.py”, line 675, in getLoadablesFromFileLists  
[CRITICAL][Stream] 17.12.2020 17:38:08 [] (unknown:0) - loadablesByPlugin[plugin] = plugin.examine(fileLists)  
[CRITICAL][Stream] 17.12.2020 17:38:08 [] (unknown:0) - File “C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PETDICOMExtension/lib/Slicer-4.11/qt-scripted-modules/DICOMPETSUVPlugin.py”, line 127, in examine  
[CRITICAL][Stream] 17.12.2020 17:38:08 [] (unknown:0) - rwvmFile = self.generateRWVMforFileList(fileList)  
[CRITICAL][Stream] 17.12.2020 17:38:08 [] (unknown:0) - File “C:/Users/MARCO/AppData/Roaming/NA-MIC/Extensions-29402/PETDICOMExtension/lib/Slicer-4.11/qt-scripted-modules/DICOMPETSUVPlugin.py”, line 169, in generateRWVMforFileList  
[CRITICAL][Stream] 17.12.2020 17:38:08 [] (unknown:0) - raise RuntimeError(“SUVFactorCalculator CLI did not complete cleanly”)  
[CRITICAL][Stream] 17.12.2020 17:38:08 [] (unknown:0) - RuntimeError: SUVFactorCalculator CLI did not complete cleanly  
[CRITICAL][Stream] 17.12.2020 17:38:08 [] (unknown:0) - DICOM Plugin failed: SUVFactorCalculator CLI did not complete cleanly  
[ERROR][Python] 17.12.2020 17:38:09 [Python] (C:/Users/MARCO/AppData/Local/NA-MIC/Slicer 4.11.20200930/bin/…/lib/Slicer-4.11/qt-scripted-modules/DICOMScalarVolumePlugin.py:273) - Please install SlicerRT extension to enable loading of DICOM RT Structure Set objects  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - Please install SlicerRT extension to enable loading of DICOM RT Structure Set objects  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: ReferencedSOPClassUID (0008,1150) empty in ReferencedPatientSequence (type 1)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: ReferencedSOPInstanceUID (0008,1155) empty in ReferencedPatientSequence (type 1)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: OperatorsName (0008,1070) absent in RTSeriesModule (type 2)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: StructureSetLabel (3006,0002) absent in StructureSetModule (type 1)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: StructureSetDate (3006,0008) absent in StructureSetModule (type 2)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: StructureSetTime (3006,0009) absent in StructureSetModule (type 2)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: ReferencedSOPClassUID (0008,1150) absent in RTReferencedStudySequence (type 1)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: ROIInterpreter (3006,00a6) absent in RTROIObservationsSequence (type 2)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: RTROIInterpretedType (3006,00a4) violates VR definition in RTROIObservationsSequence  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: ROIInterpreter (3006,00a6) absent in RTROIObservationsSequence (type 2)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: ROIInterpreter (3006,00a6) absent in RTROIObservationsSequence (type 2)  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: RTROIInterpretedType (3006,00a4) violates VR definition in RTROIObservationsSequence  
[CRITICAL][Stream] 17.12.2020 17:38:09 [] (unknown:0) - W: ROIInterpreter (3006,00a6) absent in RTROIObservationsSequence (type 2)  
[WARNING][Python] 17.12.2020 17:38:18 [Python] (C:\Users\MARCO\AppData\Local\NA-MIC\Slicer 4.11.20200930\lib\Slicer-4.11\qt-scripted-modules\DICOMLib\DICOMBrowser.py:602) - Warning in DICOM plugin Scalar Volume when examining loadable 801: Unnamed Series: Multi-frame image. If slice orientation or spacing is non-uniform then the image may be displayed incorrectly. Use with caution.  
Reference image in series does not contain geometry information. Please use caution.  
[CRITICAL][Stream] 17.12.2020 17:38:18 [] (unknown:0) - Warning in DICOM plugin Scalar Volume when examining loadable 801: Unnamed Series: Multi-frame image. If slice orientation or spacing is non-uniform then the image may be displayed incorrectly. Use with caution.  
[CRITICAL][Stream] 17.12.2020 17:38:18 [] (unknown:0) - Reference image in series does not contain geometry information. Please use caution.  
[CRITICAL][Stream] 17.12.2020 17:38:18 [] (unknown:0) -  
[INFO][Python] 17.12.2020 17:38:25 [Python] (C:/Users/MARCO/AppData/Local/NA-MIC/Slicer 4.11.20200930/bin/…/lib/Slicer-4.11/qt-scripted-modules/DICOMScalarVolumePlugin.py:383) - Loading with imageIOName: GDCM  
[ERROR][Python] 17.12.2020 17:38:26 [Python] (C:/Users/MARCO/AppData/Local/NA-MIC/Slicer 4.11.20200930/bin/…/lib/Slicer-4.11/qt-scripted-modules/DICOMScalarVolumePlugin.py:389) - Could not read scalar volume using GDCM approach. Error is: FileFormatError  
[INFO][Python] 17.12.2020 17:38:26 [Python] (C:/Users/MARCO/AppData/Local/NA-MIC/Slicer 4.11.20200930/bin/…/lib/Slicer-4.11/qt-scripted-modules/DICOMScalarVolumePlugin.py:383) - Loading with imageIOName: DCMTK  
[ERROR][Python] 17.12.2020 17:38:26 [Python] (C:/Users/MARCO/AppData/Local/NA-MIC/Slicer 4.11.20200930/bin/…/lib/Slicer-4.11/qt-scripted-modules/DICOMScalarVolumePlugin.py:389) - Could not read scalar volume using DCMTK approach. Error is: FileFormatError  
[INFO][Stream] 17.12.2020 17:38:25 [] (unknown:0) - Loading with imageIOName: GDCM  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkITKArchetypeImageSeriesScalarReader (0000017956B10830)] (D:\D\S\Slicer-0\Libs\vtkITK\vtkITKArchetypeImageSeriesReader.cxx:514) - vtkITKArchetypeImageSeriesReader::ExecuteInformation: Cannot open C:/Users/MARCO/data/FCDN\_NEOADJ\_BREAST\_001\_NoPatientID\_4866\_12/RawVolume/12\_PET EANM STD 10.10 PET/CT MAMA PRONO/patientIDNoPatientID\_studyID4866\_seriesNumber12\_seriesUnitSUVbw\_SOPInstance1.2.840.113619.2.290.1460327308.1559660000.401563.dcm. ITK exception info: error in unknown: Could not create IO object for reading file C:/Users/MARCO/data/FCDN\_NEOADJ\_BREAST\_001\_NoPatientID\_4866\_12/RawVolume/12\_PET EANM STD 10.10 PET/CT MAMA PRONO/patientIDNoPatientID\_studyID4866\_seriesNumber12\_seriesUnitSUVbw\_SOPInstance1.2.840.113619.2.290.1460327308.1559660000.401563.dcm  
Tried to create one of the following:  
BMPImageIO  
BioRadImageIO  
DCMTKImageIO  
GDCMImageIO  
GiplImageIO  
JPEGImageIO  
LSMImageIO  
MGHImageIO  
MINCImageIO  
MRCImageIO  
MetaImageIO  
NiftiImageIO  
NrrdImageIO  
PNGImageIO  
StimulateImageIO  
TIFFImageIO  
VTKImageIO  
MRMLIDImageIO  
Bruker2dseqImageIO  
GE4ImageIO  
GE5ImageIO  
HDF5ImageIO  
JPEG2000ImageIO  
You probably failed to set a file suffix, or  
set the suffix to an unsupported type.  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkCompositeDataPipeline (000001795CDE07C0)] (D:\D\S\Slicer-0-build\VTK\Common\ExecutionModel\vtkExecutive.cxx:782) - Algorithm vtkITKArchetypeImageSeriesScalarReader(0000017956B10830) returned failure for request: vtkInformation (000001795CD2DFD0)  
Debug: Off  
Modified Time: 256902  
Reference Count: 1  
Registered Events: (none)  
Request: REQUEST\_INFORMATION  
FORWARD\_DIRECTION: 0  
ALGORITHM\_AFTER\_FORWARD: 1  
[CRITICAL][Stream] 17.12.2020 17:38:26 [] (unknown:0) - Could not read scalar volume using GDCM approach. Error is: FileFormatError  
[INFO][Stream] 17.12.2020 17:38:26 [] (unknown:0) - Loading with imageIOName: DCMTK  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkITKArchetypeImageSeriesScalarReader (0000017956B100F0)] (D:\D\S\Slicer-0\Libs\vtkITK\vtkITKArchetypeImageSeriesReader.cxx:514) - vtkITKArchetypeImageSeriesReader::ExecuteInformation: Cannot open C:/Users/MARCO/data/FCDN\_NEOADJ\_BREAST\_001\_NoPatientID\_4866\_12/RawVolume/12\_PET EANM STD 10.10 PET/CT MAMA PRONO/patientIDNoPatientID\_studyID4866\_seriesNumber12\_seriesUnitSUVbw\_SOPInstance1.2.840.113619.2.290.1460327308.1559660000.401563.dcm. ITK exception info: error in unknown: Could not create IO object for reading file C:/Users/MARCO/data/FCDN\_NEOADJ\_BREAST\_001\_NoPatientID\_4866\_12/RawVolume/12\_PET EANM STD 10.10 PET/CT MAMA PRONO/patientIDNoPatientID\_studyID4866\_seriesNumber12\_seriesUnitSUVbw\_SOPInstance1.2.840.113619.2.290.1460327308.1559660000.401563.dcm  
Tried to create one of the following:  
BMPImageIO  
BioRadImageIO  
DCMTKImageIO  
GDCMImageIO  
GiplImageIO  
JPEGImageIO  
LSMImageIO  
MGHImageIO  
MINCImageIO  
MRCImageIO  
MetaImageIO  
NiftiImageIO  
NrrdImageIO  
PNGImageIO  
StimulateImageIO  
TIFFImageIO  
VTKImageIO  
MRMLIDImageIO  
Bruker2dseqImageIO  
GE4ImageIO  
GE5ImageIO  
HDF5ImageIO  
JPEG2000ImageIO  
You probably failed to set a file suffix, or  
set the suffix to an unsupported type.  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkCompositeDataPipeline (000001795CDDE6F0)] (D:\D\S\Slicer-0-build\VTK\Common\ExecutionModel\vtkExecutive.cxx:782) - Algorithm vtkITKArchetypeImageSeriesScalarReader(0000017956B100F0) returned failure for request: vtkInformation (000001795CD2CEF0)  
Debug: Off  
Modified Time: 256985  
Reference Count: 1  
Registered Events: (none)  
Request: REQUEST\_INFORMATION  
FORWARD\_DIRECTION: 0  
ALGORITHM\_AFTER\_FORWARD: 1  
[CRITICAL][Stream] 17.12.2020 17:38:26 [] (unknown:0) - Could not read scalar volume using DCMTK approach. Error is: FileFormatError  
[WARNING][Python] 17.12.2020 17:38:27 [Python] (C:\Users\MARCO\AppData\Local\NA-MIC\Slicer 4.11.20200930\bin\Python\slicer\util.py:1951) - Could not load: 801: Unnamed Series as a Scalar Volume  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkSlicerDicomRtReader (000001795C52BD00)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtReader.cxx:2045) - LoadContour: Contour sequence for ROI named ‘C1’ with number 1 is empty  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkSlicerDicomRtReader (000001795C52BD00)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtReader.cxx:2045) - LoadContour: Contour sequence for ROI named ‘C1\_nestle’ with number 2 is empty  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkSlicerDicomRtReader (000001795C52BD00)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtReader.cxx:2045) - LoadContour: Contour sequence for ROI named ‘C2’ with number 4 is empty  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkSlicerDicomRtReader (000001795C52BD00)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtReader.cxx:2045) - LoadContour: Contour sequence for ROI named ‘C2\_nestle’ with number 8 is empty  
[WARNING][VTK] 17.12.2020 17:38:26 [vtkSlicerDicomRtImportExportModuleLogic (0000017943BDC870)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtImportExportModuleLogic.cxx:1480) - LoadRtStructureSet: Invalid structure ROI data for ROI named ‘C1’ in file ‘C:/Users/MARCO/data/FCDN\_NEOADJ\_BREAST\_001\_NoPatientID\_4866\_12/RoiVolume/patientIDNoPatientID\_studyID4866\_seriesNumber12\_all\_RTSTRUCT.dcm’ (internal ROI index: 0)  
[WARNING][VTK] 17.12.2020 17:38:26 [vtkSlicerDicomRtImportExportModuleLogic (0000017943BDC870)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtImportExportModuleLogic.cxx:1480) - LoadRtStructureSet: Invalid structure ROI data for ROI named ‘C1\_nestle’ in file ‘C:/Users/MARCO/data/FCDN\_NEOADJ\_BREAST\_001\_NoPatientID\_4866\_12/RoiVolume/patientIDNoPatientID\_studyID4866\_seriesNumber12\_all\_RTSTRUCT.dcm’ (internal ROI index: 1)  
[WARNING][VTK] 17.12.2020 17:38:26 [vtkSlicerDicomRtImportExportModuleLogic (0000017943BDC870)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtImportExportModuleLogic.cxx:1480) - LoadRtStructureSet: Invalid structure ROI data for ROI named ‘C2’ in file ‘C:/Users/MARCO/data/FCDN\_NEOADJ\_BREAST\_001\_NoPatientID\_4866\_12/RoiVolume/patientIDNoPatientID\_studyID4866\_seriesNumber12\_all\_RTSTRUCT.dcm’ (internal ROI index: 2)  
[WARNING][VTK] 17.12.2020 17:38:26 [vtkSlicerDicomRtImportExportModuleLogic (0000017943BDC870)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtImportExportModuleLogic.cxx:1480) - LoadRtStructureSet: Invalid structure ROI data for ROI named ‘C2\_nestle’ in file ‘C:/Users/MARCO/data/FCDN\_NEOADJ\_BREAST\_001\_NoPatientID\_4866\_12/RoiVolume/patientIDNoPatientID\_studyID4866\_seriesNumber12\_all\_RTSTRUCT.dcm’ (internal ROI index: 3)  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkMRMLSubjectHierarchyNode (0000017957246A40)] (D:\D\S\Slicer-0\Modules\Loadable\SubjectHierarchy\Logic\vtkSlicerSubjectHierarchyModuleLogic.cxx:123) - vtkSlicerSubjectHierarchyModuleLogic::InsertDicomSeriesInHierarchy: Subject hierarchy item with DICOM UID ‘1.2.826.0.1.3680043.2.228.6.2054.1608232401761’ cannot be found  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkMRMLScene (000001793DA76570)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtImportExportModuleLogic.cxx:2944) - vtkSlicerDicomRtImportExportModuleLogic::InsertSeriesInSubjectHierarchy: Patient item has not been created for series with Instance UID 1.2.826.0.1.3680043.2.228.6.2054.1608232401761  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkMRMLScene (000001793DA76570)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtImportExportModuleLogic.cxx:2985) - vtkSlicerDicomRtImportExportModuleLogic::InsertSeriesInSubjectHierarchy: Study item has not been created for series with Instance UID 1.2.826.0.1.3680043.2.228.6.2054.1608232401761  
[ERROR][VTK] 17.12.2020 17:38:26 [vtkMRMLScene (000001793DA76570)] (D:\D\S\S-0-E-b\SlicerRT\DicomRtImportExport\Logic\vtkSlicerDicomRtImportExportModuleLogic.cxx:3004) - vtkSlicerDicomRtImportExportModuleLogic::InsertSeriesInSubjectHierarchy: Failed to insert series with Instance UID 1.2.826.0.1.3680043.2.228.6.2054.1608232401761  
[CRITICAL][Stream] 17.12.2020 17:38:27 [] (unknown:0) - Could not load: 801: Unnamed Series as a Scalar Volume

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<div class="post-metadata">

**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [December 17, 2020, 10:14pm UTC](https://discourse.slicer.org/t/error-could-not-load-801-unnamed-series-as-a-scalar-volume/15119/2 "2020-12-17T22:14:28Z")

</div>

Did you try the [dicom troubleshooting](https://slicer.readthedocs.io/en/latest/user_guide/modules/dicom.html#troubleshooting) steps?