# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=342

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

**Page:** 343

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## [vtkMRMLAnnotationROINode](https://discourse.slicer.org/t/vtkmrmlannotationroinode/11405)

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**Author:** [@rohan\_n](https://discourse.slicer.org/u/rohan_n)\
**Replies:** 1\
**Last updated:** [May 4, 2020, 7:28pm UTC](https://discourse.slicer.org/t/vtkmrmlannotationroinode/11405 "2020-05-04T19:28:54Z")

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I’m looking at this link because my Python scripted module will have 2 or 3 vtkMRMLAnnotationROINode objects open at the same time and I would like them to be distinguishable from each other by line color and/or text lab…

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## [Simulate mr noise and patient related artifacts in slicer](https://discourse.slicer.org/t/simulate-mr-noise-and-patient-related-artifacts-in-slicer/11386)

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**Author:** [@GMA](https://discourse.slicer.org/u/GMA)\
**Replies:** 3\
**Last updated:** [May 4, 2020, 6:34pm UTC](https://discourse.slicer.org/t/simulate-mr-noise-and-patient-related-artifacts-in-slicer/11386 "2020-05-04T18:34:50Z")

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is there a way to simulate image noise in MR images using slicer? Is it possible to simulate patient movement? I found in the simple itk filters “add gaussian noise” but i’m not sure this could be appropriate, for patie…

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## [Open TeraRecon segmentations on Slicer](https://discourse.slicer.org/t/open-terarecon-segmentations-on-slicer/11400)

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**Author:** [@medical](https://discourse.slicer.org/u/medical)\
**Replies:** 1\
**Last updated:** [May 4, 2020, 2:10pm UTC](https://discourse.slicer.org/t/open-terarecon-segmentations-on-slicer/11400 "2020-05-04T14:10:44Z")

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Hi! Does anyone of you know if it’s somehow possible to open a segmentation from TeraRecon on slicer? It seems that I can only open the original .dcm-scan and that I have to redo the segmentation work on slicer which is …

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## [Download.slicer.org and extension catalogue seems slows](https://discourse.slicer.org/t/download-slicer-org-and-extension-catalogue-seems-slows/10835)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 15\
**Last updated:** [May 4, 2020, 3:23am UTC](https://discourse.slicer.org/t/download-slicer-org-and-extension-catalogue-seems-slows/10835 "2020-05-04T03:23:18Z")

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I am not sure if it is my connection or just the server busy, but it takes a while to get a response. Once it starts downloading, speeds seems normal though…

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## [Couldn't not copy segmentation](https://discourse.slicer.org/t/couldnt-not-copy-segmentation/11375)

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**Author:** [@codecrazer](https://discourse.slicer.org/u/codecrazer)\
**Replies:** 3\
**Last updated:** [May 3, 2020, 11:24pm UTC](https://discourse.slicer.org/t/couldnt-not-copy-segmentation/11375 "2020-05-03T23:24:54Z")

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I couldn’t copy segmentation, what should I do? Thanks for your help!

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## [Batch mode skull stripping](https://discourse.slicer.org/t/batch-mode-skull-stripping/11388)

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**Author:** [@Mushfiqul\_alam](https://discourse.slicer.org/u/Mushfiqul_alam)\
**Replies:** 1\
**Last updated:** [May 2, 2020, 10:08pm UTC](https://discourse.slicer.org/t/batch-mode-skull-stripping/11388 "2020-05-02T22:08:04Z")

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Can i do batch skull stripping by using SwissSkullStripper extension by the help of python scripting??

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## [How do I merge DICOM files?](https://discourse.slicer.org/t/how-do-i-merge-dicom-files/11384)

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**Author:** [@CHRIS\_HUYNH](https://discourse.slicer.org/u/CHRIS_HUYNH)\
**Replies:** 1\
**Last updated:** [May 2, 2020, 6:57pm UTC](https://discourse.slicer.org/t/how-do-i-merge-dicom-files/11384 "2020-05-02T18:57:10Z")

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Hi, I have a document of a phantom spine that contains a lot of single DICOM files which i assume to be the different slices of the CT scan of the spine. How do I merge all these DICOM files into one DICOM file to uploa…

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## [Compute surface area in segment based on Hounsfield units (CT-images)](https://discourse.slicer.org/t/compute-surface-area-in-segment-based-on-hounsfield-units-ct-images/11167)

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**Author:** [@Justin](https://discourse.slicer.org/u/Justin)\
**Replies:** 7\
**Last updated:** [May 1, 2020, 9:22pm UTC](https://discourse.slicer.org/t/compute-surface-area-in-segment-based-on-hounsfield-units-ct-images/11167 "2020-05-01T21:22:30Z")

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Dear all, I hope you guys can help. I’m relatively new to 3D slicer. I am using the 4.11 version. My goal is to compute skeletal muscle area in a single CT-slice. I have loaded the CT and have created a segment using …

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## [Plus Luncher keeps saying "Launching"?](https://discourse.slicer.org/t/plus-luncher-keeps-saying-launching/11380)

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**Author:** [@kristjanq](https://discourse.slicer.org/u/kristjanq)\
**Replies:** 1\
**Last updated:** [May 1, 2020, 5:04pm UTC](https://discourse.slicer.org/t/plus-luncher-keeps-saying-launching/11380 "2020-05-01T17:04:06Z")

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Hello, I am trying to transmit some ultrasound images(NRRD format) thought Open IGTlink form PLUS to Slicer. The final goal is to reconstruct an accuracy evaluation phantom for evaluation of tracked Ultrasound. Here is…

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## [Slicer quits unexpectedly - Label statistics](https://discourse.slicer.org/t/slicer-quits-unexpectedly-label-statistics/11368)

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**Author:** [@LearningSlicerYay](https://discourse.slicer.org/u/LearningSlicerYay)\
**Replies:** 9\
**Last updated:** [May 1, 2020, 3:36pm UTC](https://discourse.slicer.org/t/slicer-quits-unexpectedly-label-statistics/11368 "2020-05-01T15:36:38Z")

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Slicer Version: 4.10.2 OS: Ubuntu Hi everyone, I’m not sure if this is the same issue as this thread, but Slicer has been quitting on me unexpectedly as well. Particularly, every time I try to calculate label statisti…

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## [Slicer Scissor Tool Cutting everything](https://discourse.slicer.org/t/slicer-scissor-tool-cutting-everything/11369)

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**Author:** [@fullerkj](https://discourse.slicer.org/u/fullerkj)\
**Replies:** 2\
**Last updated:** [May 1, 2020, 2:19pm UTC](https://discourse.slicer.org/t/slicer-scissor-tool-cutting-everything/11369 "2020-05-01T14:19:01Z")

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I have segmented and registered two images to one another as attached, but would like to cut the moving image segmentation as well as the fixed image down to just two vertebrae, however the moving segmentation when I try…

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## [How to load a .vol file of 4D ultrasound file](https://discourse.slicer.org/t/how-to-load-a-vol-file-of-4d-ultrasound-file/11367)

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**Author:** [@samsonaie](https://discourse.slicer.org/u/samsonaie)\
**Replies:** 6\
**Last updated:** [May 1, 2020, 1:39pm UTC](https://discourse.slicer.org/t/how-to-load-a-vol-file-of-4d-ultrasound-file/11367 "2020-05-01T13:39:59Z")

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I like to upload a vol file of 4D ultrasound file within the file there are also blood flow. Wondering what should I do . thanks

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## [Invalid NIFTI Orientation Reported](https://discourse.slicer.org/t/invalid-nifti-orientation-reported/11358)

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**Author:** [@Vincent\_Magnotta](https://discourse.slicer.org/u/Vincent_Magnotta)\
**Replies:** 13\
**Last updated:** [April 30, 2020, 7:30pm UTC](https://discourse.slicer.org/t/invalid-nifti-orientation-reported/11358 "2020-04-30T19:30:29Z")

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Operating system: Mac Slicer version: Slicer 4.10.0 Expected behavior: 4D NIFTI images load with an expected orientation of \[1 0 0\]\[0 1 0\] \[0 0 1\]. If I concatenate multiple 3D datasets together and load the resulting …

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## [Help for PerkLab's programming example](https://discourse.slicer.org/t/help-for-perklabs-programming-example/11347)

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**Author:** [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Replies:** 4\
**Last updated:** [April 30, 2020, 5:11pm UTC](https://discourse.slicer.org/t/help-for-perklabs-programming-example/11347 "2020-04-30T17:11:01Z")

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Hi, I have followed this tutorial . I have finished the code for the proposed exercise: “getting a sphere between two fiducial points”. The problem is know how to write the code to get the sphere between the two fiducial…

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## [Slicer quits unexpectedly](https://discourse.slicer.org/t/slicer-quits-unexpectedly/11333)

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**Author:** [@Allison\_Brea](https://discourse.slicer.org/u/Allison_Brea)\
**Replies:** 5\
**Last updated:** [April 30, 2020, 4:08am UTC](https://discourse.slicer.org/t/slicer-quits-unexpectedly/11333 "2020-04-30T04:08:34Z")

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Hello, I am working on a research with CT scans. I have a brand new Mac book pro with a lot of empty space and fully updated software. Every time I click segment editor the app unexpectedly crashes. After talking to App…

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## [How to get the color of segments from the segmentation node](https://discourse.slicer.org/t/how-to-get-the-color-of-segments-from-the-segmentation-node/11356)

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**Author:** [@xlucox](https://discourse.slicer.org/u/xlucox)\
**Replies:** 1\
**Last updated:** [April 30, 2020, 12:38am UTC](https://discourse.slicer.org/t/how-to-get-the-color-of-segments-from-the-segmentation-node/11356 "2020-04-30T00:38:43Z")

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Hello, I wonder how can I get the colors of the segments which belong to a segmentation node. Thank you very much.

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## [question about sizing information](https://discourse.slicer.org/t/question-about-sizing-information/11330)

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**Author:** [@Glass](https://discourse.slicer.org/u/Glass)\
**Replies:** 2\
**Last updated:** [April 29, 2020, 7:22am UTC](https://discourse.slicer.org/t/question-about-sizing-information/11330 "2020-04-29T07:22:45Z")

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Operating system: Mac OS catalina 10.15.3 Slicer version: 4.10.2 Expected behavior: Actual behavior: Hello, I was wondering if someone could help me with something that is probably very simple. I have started using …

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## [Is there any way to add widgets defined in some scripted module to a new scripted module?](https://discourse.slicer.org/t/is-there-any-way-to-add-widgets-defined-in-some-scripted-module-to-a-new-scripted-module/11334)

<div class="topic-metadata">

**Author:** [@xlucox](https://discourse.slicer.org/u/xlucox)\
**Replies:** 1\
**Last updated:** [April 28, 2020, 10:00pm UTC](https://discourse.slicer.org/t/is-there-any-way-to-add-widgets-defined-in-some-scripted-module-to-a-new-scripted-module/11334 "2020-04-28T22:00:47Z")

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Hi !!! I’m developing a new scripted module and I would like to add to it some widgets with the same functionality that these have in another module. I wonder if there is any way to do this without copping and pasting a…

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## [Looking forward to the releasing of 3dslicer 5！](https://discourse.slicer.org/t/looking-forward-to-the-releasing-of-3dslicer-5/11332)

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**Author:** [@yf025](https://discourse.slicer.org/u/yf025)\
**Replies:** 2\
**Last updated:** [April 28, 2020, 3:24pm UTC](https://discourse.slicer.org/t/looking-forward-to-the-releasing-of-3dslicer-5/11332 "2020-04-28T15:24:17Z")

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Hi there，I really want to know when the 3d slicer 5 could be released ，please leave words if anyone know the exact releasing time，thx！ @lassoan ：）

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## [Accessing SlicerElastix from within python module](https://discourse.slicer.org/t/accessing-slicerelastix-from-within-python-module/9410)

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**Author:** [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Replies:** 7\
**Last updated:** [April 28, 2020, 3:17pm UTC](https://discourse.slicer.org/t/accessing-slicerelastix-from-within-python-module/9410 "2020-04-28T15:17:41Z")

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I am trying to use SlicerElastix module from my module as a cli call. However, all these fails slicer.cli.run(module=slicer.modules.slicerelastix, None, parameters, wait\_for\_completion=Tr…

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## [Getting HU values from one ROI applied to two different images](https://discourse.slicer.org/t/getting-hu-values-from-one-roi-applied-to-two-different-images/11307)

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**Author:** [@gmadevs](https://discourse.slicer.org/u/gmadevs)\
**Replies:** 1\
**Last updated:** [April 28, 2020, 1:58pm UTC](https://discourse.slicer.org/t/getting-hu-values-from-one-roi-applied-to-two-different-images/11307 "2020-04-28T13:58:07Z")

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Hi all, is there a way to extract ROI values as arrays by using the same ROI on different images? Suppose I want to register two CT scan in two different timepoints, I’d like to draw a ROI and then having the HU values …

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## [DRR Generation from 3D CT Volume](https://discourse.slicer.org/t/drr-generation-from-3d-ct-volume/11324)

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**Author:** [@Lachie\_Mactier](https://discourse.slicer.org/u/Lachie_Mactier)\
**Replies:** 1\
**Last updated:** [April 28, 2020, 1:36pm UTC](https://discourse.slicer.org/t/drr-generation-from-3d-ct-volume/11324 "2020-04-28T13:36:32Z")

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Hi all, I am looking for a method producing digitally reconstructed radiographs (DRR) from CT volumes and then exporting the DRR as a DICOM file. I have seen basic python scripts that do a similar type of thing and have…

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## [Jupyter notebook with Slicer Preview](https://discourse.slicer.org/t/jupyter-notebook-with-slicer-preview/11276)

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**Author:** [@smrolfe](https://discourse.slicer.org/u/smrolfe)\
**Replies:** 9\
**Last updated:** [April 27, 2020, 10:20pm UTC](https://discourse.slicer.org/t/jupyter-notebook-with-slicer-preview/11276 "2020-04-27T22:20:20Z")

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I’m working on a Slicer Jupyter notebook using the latest preview version (Mac OS 4.11.0-2020-04-19) but am getting an error when I try to display any images. The output is a broken image icon with no errors. I get the e…

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## [Registering whole body CT with a SPECT/CT](https://discourse.slicer.org/t/registering-whole-body-ct-with-a-spect-ct/11317)

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**Author:** [@Gunjan\_Kayal](https://discourse.slicer.org/u/Gunjan_Kayal)\
**Replies:** 1\
**Last updated:** [April 27, 2020, 4:25pm UTC](https://discourse.slicer.org/t/registering-whole-body-ct-with-a-spect-ct/11317 "2020-04-27T16:25:01Z")

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Hi, When we try to perform the elastic registration (using Elastix), the whole body model is cropped to the size of the real SPECT/CT. We need to preserve the whole body and resample this whole body as per the real SPEC…

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## [Error installing SlicerRT on custom built Slicer](https://discourse.slicer.org/t/error-installing-slicerrt-on-custom-built-slicer/11305)

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**Author:** [@cacalsonari](https://discourse.slicer.org/u/cacalsonari)\
**Replies:** 3\
**Last updated:** [April 27, 2020, 3:25pm UTC](https://discourse.slicer.org/t/error-installing-slicerrt-on-custom-built-slicer/11305 "2020-04-27T15:25:34Z")

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Hi! I builded 3DSlicer in my computer, and tried to install the SlicerRT extension on Extension Manager, but when I tried to open my DICOM images I had this issue: Traceback (most recent call last): File "\<string\>", …

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## [Paint in any orientation in segment editor](https://discourse.slicer.org/t/paint-in-any-orientation-in-segment-editor/11306)

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**Author:** [@siyuanSsun](https://discourse.slicer.org/u/siyuanSsun)\
**Replies:** 2\
**Last updated:** [April 27, 2020, 1:47am UTC](https://discourse.slicer.org/t/paint-in-any-orientation-in-segment-editor/11306 "2020-04-27T01:47:09Z")

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Hi there I was wondering whether I could paint slice of any orientation in segment editor. The three default views work just fine but I want to paint in other direction because some of my structure doesn’t display well …

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## [Wrap Solidify error](https://discourse.slicer.org/t/wrap-solidify-error/11278)

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**Author:** [@SHRABANI\_GHOSH](https://discourse.slicer.org/u/SHRABANI_GHOSH)\
**Replies:** 10\
**Last updated:** [April 26, 2020, 5:16pm UTC](https://discourse.slicer.org/t/wrap-solidify-error/11278 "2020-04-26T17:16:48Z")

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Hi, I am trying to use wrap solidify extension. And I am following these steps But when I am using apply button I am getting this error. Why I am getting this error?

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## [Display both the data and segmentation result in one view](https://discourse.slicer.org/t/display-both-the-data-and-segmentation-result-in-one-view/11290)

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**Author:** [@Patrice\_Gaofei](https://discourse.slicer.org/u/Patrice_Gaofei)\
**Replies:** 7\
**Last updated:** [April 26, 2020, 8:06am UTC](https://discourse.slicer.org/t/display-both-the-data-and-segmentation-result-in-one-view/11290 "2020-04-26T08:06:45Z")

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Dear members of the 3DSlicer community, I am very new to Slicer and I need your help and suggestions for visualizing my segmentation results. In effect, my task consists of a binary segmentation. I would li…

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## [Accessing Slicer's Transform Module through terminal](https://discourse.slicer.org/t/accessing-slicers-transform-module-through-terminal/11301)

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**Author:** [@MachadoL](https://discourse.slicer.org/u/MachadoL)\
**Replies:** 4\
**Last updated:** [April 26, 2020, 1:53am UTC](https://discourse.slicer.org/t/accessing-slicers-transform-module-through-terminal/11301 "2020-04-26T01:53:34Z")

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Hey Guys, I am trying to do a bash script to run several times the routine converter from Slicer Transforms module. But no clue so far. I google it for a while. Any help is appreciated. Thanks.

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## [Confusing "save dialog" behavior](https://discourse.slicer.org/t/confusing-save-dialog-behavior/11251)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 15\
**Last updated:** [April 25, 2020, 10:00pm UTC](https://discourse.slicer.org/t/confusing-save-dialog-behavior/11251 "2020-04-25T22:00:25Z")

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