# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=346

[Latest](https://discourse.slicer.org/latest.md) · [Categories](https://discourse.slicer.org/categories.md) · [Tags](https://discourse.slicer.org/tags.md)

**Page:** 347

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## [Making the 'Help' tab as the default tab to open](https://discourse.slicer.org/t/making-the-help-tab-as-the-default-tab-to-open/10944)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 5\
**Last updated:** [April 3, 2020, 5:10am UTC](https://discourse.slicer.org/t/making-the-help-tab-as-the-default-tab-to-open/10944 "2020-04-03T05:10:01Z")

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I have this strange issue. I need the Help section of the ‘Help and Acknowledgement’ tab to be the default tab to show. I can manually click the help, but when I open a new slicer, this always goes back displaying Ackno…

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## [How to predefine sets of segmentation labels?](https://discourse.slicer.org/t/how-to-predefine-sets-of-segmentation-labels/7724)

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**Author:** [@storno](https://discourse.slicer.org/u/storno)\
**Replies:** 2\
**Last updated:** [July 23, 2019, 6:15pm UTC](https://discourse.slicer.org/t/how-to-predefine-sets-of-segmentation-labels/7724 "2019-07-23T18:15:23Z")

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Hi there For a segmentation task in with MRI data I would like to predefine a set of segmentation labels, e.g. T1\_segmentations with segments T1\_Liver and T1\_spleen and the same for T2. Is there a button in the GUI I am…

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## [Need to convert vtkMRMLScalarVolumeNode and vtkMRMLCommandLineVolumeNode to Numpy Array](https://discourse.slicer.org/t/need-to-convert-vtkmrmlscalarvolumenode-and-vtkmrmlcommandlinevolumenode-to-numpy-array/226)

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**Author:** [@siddiqueodu](https://discourse.slicer.org/u/siddiqueodu)\
**Replies:** 1\
**Last updated:** [April 28, 2017, 9:30pm UTC](https://discourse.slicer.org/t/need-to-convert-vtkmrmlscalarvolumenode-and-vtkmrmlcommandlinevolumenode-to-numpy-array/226 "2017-04-28T21:30:03Z")

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I am using slicer module in my own module to get bias corrected volume. The following function is working correctly. def biascorrection(volumeNode1): parameters = {} parameters\["inputImageName"\] = volumeNode1.GetID(…

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## [Loading merged series](https://discourse.slicer.org/t/loading-merged-series/10960)

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**Author:** [@JanWitowski](https://discourse.slicer.org/u/JanWitowski)\
**Replies:** 2\
**Last updated:** [April 1, 2020, 8:16pm UTC](https://discourse.slicer.org/t/loading-merged-series/10960 "2020-04-01T20:16:30Z")

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Hello, I’m trying to load merged series DICOM images, i.e. arterial and venous phase are saved as the same Series ID and thus read by 3D Slicer as a single serie. It’s being loaded layer by layer from each acquisition: …

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## [How to set center of rotation for linear transformation in GUI](https://discourse.slicer.org/t/how-to-set-center-of-rotation-for-linear-transformation-in-gui/10903)

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**Author:** [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Replies:** 3\
**Last updated:** [March 31, 2020, 7:45pm UTC](https://discourse.slicer.org/t/how-to-set-center-of-rotation-for-linear-transformation-in-gui/10903 "2020-03-31T19:45:22Z")

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When I use transformation module there is a way to rotate one volume to match the other, but I can’t control the center of rotation. I thought that by setting a fiducial point will do the trick but no. So, is there a wa…

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## [Show scalar bar programmatically](https://discourse.slicer.org/t/show-scalar-bar-programmatically/9842)

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**Author:** [@Fernando](https://discourse.slicer.org/u/Fernando)\
**Replies:** 9\
**Last updated:** [March 31, 2020, 1:24pm UTC](https://discourse.slicer.org/t/show-scalar-bar-programmatically/9842 "2020-03-31T13:24:40Z")

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Hi all, I’d like to show the scalar bar like when I do DataProbe -\> ScalarBar -\> Enable -\> Foreground. Do you know how I can do this? I’ve always had a hard time accessing the DataProbe stuff from Python. Cheers, Fern…

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## [SUV minimum value](https://discourse.slicer.org/t/suv-minimum-value/10902)

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**Author:** [@Nora](https://discourse.slicer.org/u/Nora)\
**Replies:** 0\
**Last updated:** [March 30, 2020, 10:45am UTC](https://discourse.slicer.org/t/suv-minimum-value/10902 "2020-03-30T10:45:39Z")

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Hello all, I hope you all in a good health. I tried to use quantitative indic tool to calculate the SUVs values. One of my cases got low uptake some values like the minimum was negative. Does that make sense?

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## [Pick and Paint SyntaxError](https://discourse.slicer.org/t/pick-and-paint-syntaxerror/10924)

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**Author:** [@Maila\_Portes](https://discourse.slicer.org/u/Maila_Portes)\
**Replies:** 1\
**Last updated:** [March 31, 2020, 3:07am UTC](https://discourse.slicer.org/t/pick-and-paint-syntaxerror/10924 "2020-03-31T03:07:24Z")

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Operating system: win10 Slicer version: 4.10.2 Expected behavior: Actual behavior: I´ve installed the extesion PickAndPaint but this error message appears File “C:/Users/myuser/AppData/Roaming/NA-MIC/Extensions-2825…

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## [Improving Slice overlay functionality to visualize registration differences using different color "channel" for fixed and moving](https://discourse.slicer.org/t/improving-slice-overlay-functionality-to-visualize-registration-differences-using-different-color-channel-for-fixed-and-moving/10920)

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**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 5\
**Last updated:** [March 30, 2020, 10:51pm UTC](https://discourse.slicer.org/t/improving-slice-overlay-functionality-to-visualize-registration-differences-using-different-color-channel-for-fixed-and-moving/10920 "2020-03-30T22:51:49Z")

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To support generating overlay like this one (useful to visualize registration differences): Image copied from here An idea would be to add a new blending mode. Currently we have the following: Would that generally…

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## [Using paint function results in segmentation on adjacent slice](https://discourse.slicer.org/t/using-paint-function-results-in-segmentation-on-adjacent-slice/10912)

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**Author:** [@cydneyma](https://discourse.slicer.org/u/cydneyma)\
**Replies:** 2\
**Last updated:** [March 30, 2020, 10:30pm UTC](https://discourse.slicer.org/t/using-paint-function-results-in-segmentation-on-adjacent-slice/10912 "2020-03-30T22:30:17Z")

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Hi all, New to the forum here. I am experiencing an issue wherein every time I try to “paint” a given slice, it paints the adjacent slice instead. I have checked that I don’t have “sphere brush” selected. I have also lo…

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## [Export and/or retrieve a folder's hierarchy](https://discourse.slicer.org/t/export-and-or-retrieve-a-folders-hierarchy/10906)

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**Author:** [@Melodicpinpon](https://discourse.slicer.org/u/Melodicpinpon)\
**Replies:** 1\
**Last updated:** [March 30, 2020, 10:29pm UTC](https://discourse.slicer.org/t/export-and-or-retrieve-a-folders-hierarchy/10906 "2020-03-30T22:29:09Z")

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Good afternoon, In the post about the 3D parts of the whole body, Andras Lasso achieved to recreate automatically the whole hierarchy and to get the names. Is there a way to export a readable folder hierarchy from 3D S…

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## [Why after all extensions were installed, the slicer would crash?](https://discourse.slicer.org/t/why-after-all-extensions-were-installed-the-slicer-would-crash/10909)

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**Author:** [@researchtomliu](https://discourse.slicer.org/u/researchtomliu)\
**Replies:** 1\
**Last updated:** [March 30, 2020, 8:19pm UTC](https://discourse.slicer.org/t/why-after-all-extensions-were-installed-the-slicer-would-crash/10909 "2020-03-30T20:19:20Z")

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When I downloaded the version 4.10.2 and installed all the extensions, I can’t open the software and the system showed me the information “the application was unable to start correctly (0Xc0000017).Click OK to close the …

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## [How to install pedicle screws simulator extension?](https://discourse.slicer.org/t/how-to-install-pedicle-screws-simulator-extension/1073)

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**Author:** [@kevincool98](https://discourse.slicer.org/u/kevincool98)\
**Replies:** 31\
**Last updated:** [March 30, 2020, 8:17pm UTC](https://discourse.slicer.org/t/how-to-install-pedicle-screws-simulator-extension/1073 "2020-03-30T20:17:53Z")

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Operating system:mac Slicer version:4.7 Expected behavior: a new downloaded extension for pedicle screws simulator ,I saw the video about that on youtube, and expected it work in 3d slicer. Actual behavior:i found the…

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## [error: Failed to obtain launcher executable name !](https://discourse.slicer.org/t/error-failed-to-obtain-launcher-executable-name/10913)

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**Author:** [@HugoTrentesaux](https://discourse.slicer.org/u/HugoTrentesaux)\
**Replies:** 1\
**Last updated:** [March 30, 2020, 8:06pm UTC](https://discourse.slicer.org/t/error-failed-to-obtain-launcher-executable-name/10913 "2020-03-30T20:06:44Z")

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Ubuntu 18.04, fresh install. Downloaded appimage v4.10 of 3D slicer which gives error error: Failed to obtain launcher executable name ! when launched from terminal (same for v4.11 preview). Problem has already been r…

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## [Colored orientation markers](https://discourse.slicer.org/t/colored-orientation-markers/10905)

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**Author:** [@Joshua\_Broder](https://discourse.slicer.org/u/Joshua_Broder)\
**Replies:** 0\
**Last updated:** [March 30, 2020, 4:14pm UTC](https://discourse.slicer.org/t/colored-orientation-markers/10905 "2020-03-30T16:14:10Z")

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Operating system: Windows 10 Slicer version: 4.11.0-2020-02-20 Expected behavior: import a colored model to use as an orientation marker Actual behavior: model is imported in single color I’m interested in importing …

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## [Get active cell from loaded table](https://discourse.slicer.org/t/get-active-cell-from-loaded-table/10882)

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**Author:** [@smrolfe](https://discourse.slicer.org/u/smrolfe)\
**Replies:** 4\
**Last updated:** [March 30, 2020, 3:18pm UTC](https://discourse.slicer.org/t/get-active-cell-from-loaded-table/10882 "2020-03-30T15:18:31Z")

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I’d like to access the active (highlighted) cell in a table in the MRML scene from the Python interactor. I thought this property might be in the vtkMRMLTableNode or vtkMRMLTableViewNode. Is there someplace else I should…

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## [Build fails on Linux : configuration incomplete](https://discourse.slicer.org/t/build-fails-on-linux-configuration-incomplete/10898)

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**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 4\
**Last updated:** [March 30, 2020, 2:59pm UTC](https://discourse.slicer.org/t/build-fails-on-linux-configuration-incomplete/10898 "2020-03-30T14:59:29Z")

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My weekly build fails today when configuring Slicer itself : – Setting CPACK\_PACKAGE\_INSTALL\_DIRECTORY to ‘Slicer 4.11.0-2020-03-28’ – Setting CPACK\_PACKAGE\_DESCRIPTION\_FILE to ‘/home/arc/src/Slicer/README.txt’ – Set…

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## [persistent errors - segmentation shifts](https://discourse.slicer.org/t/persistent-errors-segmentation-shifts/10873)

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**Author:** [@cepcep](https://discourse.slicer.org/u/cepcep)\
**Replies:** 4\
**Last updated:** [March 30, 2020, 4:38am UTC](https://discourse.slicer.org/t/persistent-errors-segmentation-shifts/10873 "2020-03-30T04:38:34Z")

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Hello. I’ve been doing brain segmentation for more than a week now, my goal is to break it into three parts for 3D printing. Frontal, parental lobes, septum pellucidum+Monro(little pars talamus) brain stem (with dienc…

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## [Create an RT Structure in Slicer](https://discourse.slicer.org/t/create-an-rt-structure-in-slicer/10877)

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**Author:** [@Mohammad](https://discourse.slicer.org/u/Mohammad)\
**Replies:** 4\
**Last updated:** [March 28, 2020, 9:53pm UTC](https://discourse.slicer.org/t/create-an-rt-structure-in-slicer/10877 "2020-03-28T21:53:14Z")

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Hi Is it possible to create an RT Structure file from the binary mask in 3D Slicer?

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## [Runtime Error R6036 (microsoft visual c++ run time library)](https://discourse.slicer.org/t/runtime-error-r6036-microsoft-visual-c-run-time-library/10884)

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**Author:** [@xlucox](https://discourse.slicer.org/u/xlucox)\
**Replies:** 3\
**Last updated:** [March 28, 2020, 8:37pm UTC](https://discourse.slicer.org/t/runtime-error-r6036-microsoft-visual-c-run-time-library/10884 "2020-03-28T20:37:18Z")

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Hi everyone. I have had problems when importing Scipy in Slicer 4.10.2 on Windows 10. After write ‘import scipy’ I get a Runtime Error R6036. I have installed Scipy from Python interactor in Slicer with the following …

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## [Alternate glyph shapes for Markups?](https://discourse.slicer.org/t/alternate-glyph-shapes-for-markups/10579)

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**Author:** [@stl](https://discourse.slicer.org/u/stl)\
**Replies:** 7\
**Last updated:** [March 28, 2020, 2:27pm UTC](https://discourse.slicer.org/t/alternate-glyph-shapes-for-markups/10579 "2020-03-28T14:27:11Z")

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Hi, Right now in Slicer 4.11, there are two options for 3D Glyph Types: Sphere3D and Diamond3D. Can someone point me in the right direction for how to add or for code that I could use to add more 3D shapes? Thank you! …

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## [Segment and Volume Rendering views get misaligned upon re-Crop input volume](https://discourse.slicer.org/t/segment-and-volume-rendering-views-get-misaligned-upon-re-crop-input-volume/8336)

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**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 4\
**Last updated:** [September 11, 2019, 3:53am UTC](https://discourse.slicer.org/t/segment-and-volume-rendering-views-get-misaligned-upon-re-crop-input-volume/8336 "2019-09-11T03:53:50Z")

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Hello, The pictures below show that a segment gets displaced, or does not follow a re-cropped volume. To reproduce : Crop a volume (CTA-Cardio here) Paint anything with a big sphere brush in Segment Editor and show i…

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## [Update of Discourse posts to reference correct https://github.com/Slicer/Slicer/\<sha\> URL](https://discourse.slicer.org/t/update-of-discourse-posts-to-reference-correct-https-github-com-slicer-slicer-sha-url/10878)

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**Author:** [@sobiny](https://discourse.slicer.org/u/sobiny)\
**Replies:** 4\
**Last updated:** [March 27, 2020, 6:50pm UTC](https://discourse.slicer.org/t/update-of-discourse-posts-to-reference-correct-https-github-com-slicer-slicer-sha-url/10878 "2020-03-27T18:50:25Z")

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## [Thread for uploading data](https://discourse.slicer.org/t/thread-for-uploading-data/10185)

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**Author:** [@tbuikr](https://discourse.slicer.org/u/tbuikr)\
**Replies:** 13\
**Last updated:** [March 27, 2020, 12:35pm UTC](https://discourse.slicer.org/t/thread-for-uploading-data/10185 "2020-03-27T12:35:11Z")

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Thanks for great SDK and python support. I am using python and Slicer to upload dicom file to my server using requests.post. My dicom size about 20MB and it takes 1 mins to upload it to server. During uploading process…

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## [Is it okay to use sample data in research, as long as I cite?](https://discourse.slicer.org/t/is-it-okay-to-use-sample-data-in-research-as-long-as-i-cite/10872)

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**Author:** [@Adam\_Trusty](https://discourse.slicer.org/u/Adam_Trusty)\
**Replies:** 1\
**Last updated:** [March 27, 2020, 12:26pm UTC](https://discourse.slicer.org/t/is-it-okay-to-use-sample-data-in-research-as-long-as-i-cite/10872 "2020-03-27T12:26:50Z")

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Operating system: Windows Slicer version: 4.10.2 So I’m in medical school, working on a project. I’d like to use the MRI brain sample data, am I allowed to do that, legally, as long as I cite slicer v4? I have looked …

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## [Slicer removes the volume in Segment Editor](https://discourse.slicer.org/t/slicer-removes-the-volume-in-segment-editor/10206)

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**Author:** [@JanWitowski](https://discourse.slicer.org/u/JanWitowski)\
**Replies:** 6\
**Last updated:** [February 13, 2020, 12:29am UTC](https://discourse.slicer.org/t/slicer-removes-the-volume-in-segment-editor/10206 "2020-02-13T00:29:59Z")

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Hi, I’ve been trying to work with 2020-02-08 build of Slicer and encountered an error in Segment Editor. After choosing Master volume and adding a new layer, the volume set as Master is being detached/removed from the sl…

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## [How to export all structures to STL file?](https://discourse.slicer.org/t/how-to-export-all-structures-to-stl-file/10848)

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**Author:** [@taehyeong\_kim](https://discourse.slicer.org/u/taehyeong_kim)\
**Replies:** 1\
**Last updated:** [March 26, 2020, 1:42pm UTC](https://discourse.slicer.org/t/how-to-export-all-structures-to-stl-file/10848 "2020-03-26T13:42:40Z")

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Hi everyone I’ll ask you to how to export the dicom slice. I implemented as follows. A Dicom file containing the structure(OAR, spinal cord, eye… etc) was imported into the 3D slicer from Varian Eclipse. The segment …

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## [How to export all structures to STL file](https://discourse.slicer.org/t/how-to-export-all-structures-to-stl-file/10866)

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**Author:** [@taehyeong\_kim](https://discourse.slicer.org/u/taehyeong_kim)\
**Replies:** 0\
**Last updated:** [March 27, 2020, 12:37am UTC](https://discourse.slicer.org/t/how-to-export-all-structures-to-stl-file/10866 "2020-03-27T00:37:06Z")

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Hi everyone I’ll ask you to how to export the dicom slice. I implemented as follows. A Dicom file containing the structure(OAR, spinal cord, eye… etc) was imported into the 3D slicer from Varian Eclipse. The segment …

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## [Can't open saved MRML file](https://discourse.slicer.org/t/cant-open-saved-mrml-file/10628)

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**Author:** [@getiwh](https://discourse.slicer.org/u/getiwh)\
**Replies:** 5\
**Last updated:** [March 11, 2020, 9:27pm UTC](https://discourse.slicer.org/t/cant-open-saved-mrml-file/10628 "2020-03-11T21:27:40Z")

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Operating system: Mac OSX Slicer version: 4.11.0 Expected behaviour: Open saved MRML file of MRI Actual behaviour: Zero bytes file and blank screen I’m not very technically inclined, and have just recently downloaded…

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## [Change of the sign of space directions and space origin due to interpolation / cropping](https://discourse.slicer.org/t/change-of-the-sign-of-space-directions-and-space-origin-due-to-interpolation-cropping/10864)

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**Author:** [@MMMPPPMMM](https://discourse.slicer.org/u/MMMPPPMMM)\
**Replies:** 1\
**Last updated:** [March 26, 2020, 11:14pm UTC](https://discourse.slicer.org/t/change-of-the-sign-of-space-directions-and-space-origin-due-to-interpolation-cropping/10864 "2020-03-26T23:14:03Z")

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Hello Is it intended that the sign of space directions and space origin change due to interpolated cropping? From the header files of the volumes: Before interpolation / cropping: type: float dimension: 3 space: l…

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