# Support

**URL:** https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=33

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

**Page:** 34

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## [Can I study prostate cancer using this software ](https://discourse.slicer.org/t/can-i-study-prostate-cancer-using-this-software/43798)

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**Author:** [@bujji\_babu](https://discourse.slicer.org/u/bujji_babu)\
**Replies:** 2\
**Last updated:** [July 21, 2025, 8:52pm UTC](https://discourse.slicer.org/t/can-i-study-prostate-cancer-using-this-software/43798 "2025-07-21T20:52:23Z")

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Can I study prostate cancer with this as I am a radiologist

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## [How versatile is the HD Brain Extraction extension?](https://discourse.slicer.org/t/how-versatile-is-the-hd-brain-extraction-extension/43426)

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**Author:** [@sulli419](https://discourse.slicer.org/u/sulli419)\
**Replies:** 1\
**Last updated:** [July 21, 2025, 8:40pm UTC](https://discourse.slicer.org/t/how-versatile-is-the-hd-brain-extraction-extension/43426 "2025-07-21T20:40:43Z")

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Hi, I am wondering how well the HD Brain Extraction extension might work on anatomical scans of mouse brains. Has anyone tried this? Were any efforts made to make this trained model more robust/generalizable/versatile…

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## [Help in Mandibular Canal Segmentation ](https://discourse.slicer.org/t/help-in-mandibular-canal-segmentation/43762)

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**Author:** [@rahim](https://discourse.slicer.org/u/rahim)\
**Replies:** 2\
**Last updated:** [July 21, 2025, 3:10pm UTC](https://discourse.slicer.org/t/help-in-mandibular-canal-segmentation/43762 "2025-07-21T15:10:52Z")

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Hi I am Rahim, working on project to automate mandibular canal segmentation. For this project, I need to annotate my data, specially segment Mandibular canal in 3D slicer. I am new and mandibular canal segmentation in q…

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## [t1 t2 mr registration](https://discourse.slicer.org/t/t1-t2-mr-registration/43651)

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**Author:** [@rafet](https://discourse.slicer.org/u/rafet)\
**Replies:** 1\
**Last updated:** [July 21, 2025, 9:20am UTC](https://discourse.slicer.org/t/t1-t2-mr-registration/43651 "2025-07-21T09:20:18Z")

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hello ı am trying to merge two mri of the same patient one is t1 weighted with good sagittal view but limited to the right side of the head and other one is t2 weighted with good axiak view but its contains the whole hea…

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## [undefined symbol woes on launch](https://discourse.slicer.org/t/undefined-symbol-woes-on-launch/43782)

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**Author:** [@Daniel\_Drucker](https://discourse.slicer.org/u/Daniel_Drucker)\
**Replies:** 1\
**Last updated:** [July 20, 2025, 4:57pm UTC](https://discourse.slicer.org/t/undefined-symbol-woes-on-launch/43782 "2025-07-20T16:57:48Z")

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I’m trying to run ./Slicer (in 5.8.1) on RHEL8.9. I get: $ ./Slicer /home/ddrucker/Slicer-5.8.1/bin/SlicerApp-real: symbol lookup error: /lib64/libk5crypto.so.3: undefined symbol: EVP\_KDF\_ctrl, version OPENSSL\_1\_1\_1b I…

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## [Unable to display two sets of data simultaneously](https://discourse.slicer.org/t/unable-to-display-two-sets-of-data-simultaneously/43784)

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**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 1\
**Last updated:** [July 20, 2025, 1:33pm UTC](https://discourse.slicer.org/t/unable-to-display-two-sets-of-data-simultaneously/43784 "2025-07-20T13:33:37Z")

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## [Can't launch latest preview (7/17) on Windows 11](https://discourse.slicer.org/t/cant-launch-latest-preview-7-17-on-windows-11/43771)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 6\
**Last updated:** [July 18, 2025, 11:38pm UTC](https://discourse.slicer.org/t/cant-launch-latest-preview-7-17-on-windows-11/43771 "2025-07-18T23:38:53Z")

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I just installed the latest preview on a windows 11 machine, and Slicer fails to launch after the splash screen. There is no failure in the error log either. I tried launching from the command line and same story, no err…

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## [Registering T2\* Maps from MRI](https://discourse.slicer.org/t/registering-t2-maps-from-mri/43660)

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**Author:** [@aceegreene](https://discourse.slicer.org/u/aceegreene)\
**Replies:** 5\
**Last updated:** [July 18, 2025, 6:59pm UTC](https://discourse.slicer.org/t/registering-t2-maps-from-mri/43660 "2025-07-18T18:59:20Z")

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Hi everyone - I’m very new to 3D Slicer and had a question about coregistration. We have 3D T2\* maps of menisci which I want to coregister and come up with a 3D T2\* map that is the average of all the individual 3D T2\* ma…

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## [Generate volume from non parallel frames. ](https://discourse.slicer.org/t/generate-volume-from-non-parallel-frames/42862)

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**Author:** [@derradji](https://discourse.slicer.org/u/derradji)\
**Replies:** 5\
**Last updated:** [July 18, 2025, 5:18pm UTC](https://discourse.slicer.org/t/generate-volume-from-non-parallel-frames/42862 "2025-07-18T17:18:28Z")

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Hi I’m using an endocavity linear ultrasound. The patient is scanned by rotating the probe on its own axe. So the série is a set of a non parallel frames. I get from the device (mindray z60) only one file per series c…

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## [Issues Related to the Python Environment in 3D Slicer Software](https://discourse.slicer.org/t/issues-related-to-the-python-environment-in-3d-slicer-software/42472)

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**Author:** [@lirongyaoper](https://discourse.slicer.org/u/lirongyaoper)\
**Replies:** 4\
**Last updated:** [July 18, 2025, 11:26am UTC](https://discourse.slicer.org/t/issues-related-to-the-python-environment-in-3d-slicer-software/42472 "2025-07-18T11:26:08Z")

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Why does 3D Slicer bundle its own Python environment instead of using a user-configured Python environment? Can we modify settings to make 3D Slicer use a custom Python environment?

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## [Pancreatic CTA Vascular Reconstruction](https://discourse.slicer.org/t/pancreatic-cta-vascular-reconstruction/43764)

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**Author:** [@HenryClein](https://discourse.slicer.org/u/HenryClein)\
**Replies:** 1\
**Last updated:** [July 18, 2025, 12:01am UTC](https://discourse.slicer.org/t/pancreatic-cta-vascular-reconstruction/43764 "2025-07-18T00:01:18Z")

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Dear R&D staff, the blood vessels around the pancreas are very complex and it is very easy to have massive bleeding during surgery. I hope to build a vascular reconstruction model. Is there a good learning tutorial? Than…

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## [DICOM Exporting After Hardened Transformation](https://discourse.slicer.org/t/dicom-exporting-after-hardened-transformation/43760)

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**Author:** [@ThymusTheTrain](https://discourse.slicer.org/u/ThymusTheTrain)\
**Replies:** 0\
**Last updated:** [July 17, 2025, 4:20pm UTC](https://discourse.slicer.org/t/dicom-exporting-after-hardened-transformation/43760 "2025-07-17T16:20:59Z")

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When I try exporting a DICOM series after hardening a transform, I find that my DICOMs still look like they were before the transform when they are loaded into Horos, but not ITK-Snap. I did not have this problem when I …

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## [nnInteractive limitation](https://discourse.slicer.org/t/nninteractive-limitation/43733)

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**Author:** [@Sebastiets](https://discourse.slicer.org/u/Sebastiets)\
**Replies:** 9\
**Last updated:** [July 17, 2025, 3:13pm UTC](https://discourse.slicer.org/t/nninteractive-limitation/43733 "2025-07-17T15:13:22Z")

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Hi, I’m currently exploring the use of nnInteractive slicer’s version and noticed that the segmentation cuts pretty steaply not finishing the segmentation of the tibia or femur for example. Maybe Andras or Steve could te…

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## [Prevent 3D Slicer to close on missing RAM](https://discourse.slicer.org/t/prevent-3d-slicer-to-close-on-missing-ram/43748)

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**Author:** [@calvinsuzuki](https://discourse.slicer.org/u/calvinsuzuki)\
**Replies:** 1\
**Last updated:** [July 17, 2025, 4:46am UTC](https://discourse.slicer.org/t/prevent-3d-slicer-to-close-on-missing-ram/43748 "2025-07-17T04:46:21Z")

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Typically, computers with 8 GB of RAM are enough to run my module, but sometimes I need 12 GB. Is there any way to prevent Slicer from silently and instantly crashing when it reaches the PC’s RAM limit? The crashes occ…

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## [How do I view the 3D rendering of CT dental images?](https://discourse.slicer.org/t/how-do-i-view-the-3d-rendering-of-ct-dental-images/43718)

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**Author:** [@Wonderer](https://discourse.slicer.org/u/Wonderer)\
**Replies:** 6\
**Last updated:** [July 16, 2025, 10:29pm UTC](https://discourse.slicer.org/t/how-do-i-view-the-3d-rendering-of-ct-dental-images/43718 "2025-07-16T22:29:29Z")

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Dr. “A” provided a USB drive with 348 zipped {dot} dcm images which are just that, images. I took the drive to another Dr.'s office Dr. “B” and they were unable to generate any 3D renderings and could only see the images…

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## [Variations in Volume: Segment Endocranium Utility in Slicermorph](https://discourse.slicer.org/t/variations-in-volume-segment-endocranium-utility-in-slicermorph/43747)

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**Author:** [@sck84](https://discourse.slicer.org/u/sck84)\
**Replies:** 1\
**Last updated:** [July 16, 2025, 8:23pm UTC](https://discourse.slicer.org/t/variations-in-volume-segment-endocranium-utility-in-slicermorph/43747 "2025-07-16T20:23:11Z")

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Hello, I am segmenting the endocranial cavity of mouse skulls using the Segment Endocranium utility in SlicerMorph. I noticed that there are pretty significant differences in the resulting segments when I run it a serie…

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## [HU ranges for tissue types in TotalSegmentator (visceral fat, subcutaneous fat, skeletal muscle, etc.)](https://discourse.slicer.org/t/hu-ranges-for-tissue-types-in-totalsegmentator-visceral-fat-subcutaneous-fat-skeletal-muscle-etc/43726)

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**Author:** [@Seok\_Jin\_Hong](https://discourse.slicer.org/u/Seok_Jin_Hong)\
**Replies:** 1\
**Last updated:** [July 16, 2025, 8:22pm UTC](https://discourse.slicer.org/t/hu-ranges-for-tissue-types-in-totalsegmentator-visceral-fat-subcutaneous-fat-skeletal-muscle-etc/43726 "2025-07-16T20:22:00Z")

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Hi, I’m using the TotalSegmentator module in 3D Slicer, specifically the tissue types segmentation task. It automatically separates tissues into visceral fat, subcutaneous fat, skeletal muscle, and intramuscular fat. C…

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## [New Dynamic Modeler tool: Revolve](https://discourse.slicer.org/t/new-dynamic-modeler-tool-revolve/43715)

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**Author:** [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Replies:** 1\
**Last updated:** [July 16, 2025, 5:47pm UTC](https://discourse.slicer.org/t/new-dynamic-modeler-tool-revolve/43715 "2025-07-16T17:47:05Z")

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Dynamic Modeler module allows parametric editing of models. In this post I present a new tool that will be available on tomorrow’s Slicer Preview release Revolve tool: creates an output mesh from revolving an input prof…

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## [Install Slicer for all users on Windows](https://discourse.slicer.org/t/install-slicer-for-all-users-on-windows/28421)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 7\
**Last updated:** [July 16, 2025, 3:11pm UTC](https://discourse.slicer.org/t/install-slicer-for-all-users-on-windows/28421 "2025-07-16T15:11:26Z")

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We are setting up some JIT space for SlicerMorph usage. People will login with their own user accounts. I don’t want everyone to download and install Slicer and the extensions under their account, as everyone will be usi…

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## [CUDA is not currently available on your system -DentalSegmentator problem](https://discourse.slicer.org/t/cuda-is-not-currently-available-on-your-system-dentalsegmentator-problem/43738)

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**Author:** [@tarikau](https://discourse.slicer.org/u/tarikau)\
**Replies:** 1\
**Last updated:** [July 16, 2025, 11:41am UTC](https://discourse.slicer.org/t/cuda-is-not-currently-available-on-your-system-dentalsegmentator-problem/43738 "2025-07-16T11:41:01Z")

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Hello, I’ve installed DentalSegmentator extension together with PyTorch extension. When I click on Apply, it says: “Selected device (CUDA) is not currently available on your system and will default to CPU device. Runn…

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## [segment visibility in 2D and 3D](https://discourse.slicer.org/t/segment-visibility-in-2d-and-3d/43707)

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**Author:** [@apeneck](https://discourse.slicer.org/u/apeneck)\
**Replies:** 3\
**Last updated:** [July 15, 2025, 5:05pm UTC](https://discourse.slicer.org/t/segment-visibility-in-2d-and-3d/43707 "2025-07-15T17:05:26Z")

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In segment editor, if I click the eye icon next to a segment, it turns it off in the 2D views, but not in the 3D view. I’ve been away from the program for a few weeks, but when I last used it, clicking the eye icon made …

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## [ROI of 3 stl files](https://discourse.slicer.org/t/roi-of-3-stl-files/43722)

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**Author:** [@PLET](https://discourse.slicer.org/u/PLET)\
**Replies:** 3\
**Last updated:** [July 15, 2025, 2:55pm UTC](https://discourse.slicer.org/t/roi-of-3-stl-files/43722 "2025-07-15T14:55:41Z")

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I have 3 .stl files of a forearm segment (muscle, skin, bone). I want to use 3D Slicer to crop a specific section, but I can only do it with one layer. I don’t know how to crop all three layers together at the same time.…

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## [qMRMLSubjectHierarchyComboBox as parameter node](https://discourse.slicer.org/t/qmrmlsubjecthierarchycombobox-as-parameter-node/43711)

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**Author:** [@Amy\_Morton](https://discourse.slicer.org/u/Amy_Morton)\
**Replies:** 2\
**Last updated:** [July 15, 2025, 1:52pm UTC](https://discourse.slicer.org/t/qmrmlsubjecthierarchycombobox-as-parameter-node/43711 "2025-07-15T13:52:30Z")

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I’d like to programmatically assign a subject hierarchy group to a qMRMLSubjectHierarchyComboBox in my module. After setting SlicerParameterName property to hNode, in designer I add hNode to my parameterNodeWrapper hNod…

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## [Secgmentation of a small dental CBCT](https://discourse.slicer.org/t/secgmentation-of-a-small-dental-cbct/43731)

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**Author:** [@Multipack](https://discourse.slicer.org/u/Multipack)\
**Replies:** 0\
**Last updated:** [July 15, 2025, 1:25pm UTC](https://discourse.slicer.org/t/secgmentation-of-a-small-dental-cbct/43731 "2025-07-15T13:25:53Z")

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Operating system: Windows Slicer version: 5.8.1 Expected behavior: Segment a small volume CBCT of the anterior maxilla i.e divide teeth from bone. Actual behavior: no 3D image is created, I get an error message: Fail…

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## [Volume or Surface Area for 2D Ultrasound Segmentation?](https://discourse.slicer.org/t/volume-or-surface-area-for-2d-ultrasound-segmentation/43706)

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**Author:** [@Arian\_Amini](https://discourse.slicer.org/u/Arian_Amini)\
**Replies:** 2\
**Last updated:** [July 14, 2025, 5:24pm UTC](https://discourse.slicer.org/t/volume-or-surface-area-for-2d-ultrasound-segmentation/43706 "2025-07-14T17:24:49Z")

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Hello, I posted this a few weeks ago but received no response, and wanted to try my luck again. I won’t continue to spam with this question if there are no responses again. Thank you for understanding. I have segmented…

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## [Having trouble with TotalSegmentator](https://discourse.slicer.org/t/having-trouble-with-totalsegmentator/43710)

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**Author:** [@Celina\_Hallal](https://discourse.slicer.org/u/Celina_Hallal)\
**Replies:** 1\
**Last updated:** [July 14, 2025, 2:32pm UTC](https://discourse.slicer.org/t/having-trouble-with-totalsegmentator/43710 "2025-07-14T14:32:46Z")

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Operating system: MacOS Sequoia 15.5 Slicer version: 5.9.0 Expected behavior: Automated segmentation of organs, segmentation of liver segments Actual behavior: Extension fails to compute results I am trying to use To…

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## [Problems with a microtomography and growing from seeds](https://discourse.slicer.org/t/problems-with-a-microtomography-and-growing-from-seeds/43681)

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**Author:** [@JaredAmudeo](https://discourse.slicer.org/u/JaredAmudeo)\
**Replies:** 15\
**Last updated:** [July 14, 2025, 2:56am UTC](https://discourse.slicer.org/t/problems-with-a-microtomography-and-growing-from-seeds/43681 "2025-07-14T02:56:13Z")

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Hello! I need a little help understanding the ideal hardware for this feature to work quickly, or fast enough. On my personal computer, I haven’t had any “issues” with files requiring more RAM than I have, and when I do,…

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## [Getting the preview working on newer MacOS](https://discourse.slicer.org/t/getting-the-preview-working-on-newer-macos/43670)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 3\
**Last updated:** [July 12, 2025, 5:44pm UTC](https://discourse.slicer.org/t/getting-the-preview-working-on-newer-macos/43670 "2025-07-12T17:44:24Z")

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On Mac when I download a preview version and copy the package contents to my Desktop, I usually have to command+Click and then choose Open Anyways to disregard the warning message about Slicer being potentially a dangero…

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## [Model/Markups Coordinate systems](https://discourse.slicer.org/t/model-markups-coordinate-systems/43691)

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**Author:** [@Ryan\_Jones](https://discourse.slicer.org/u/Ryan_Jones)\
**Replies:** 2\
**Last updated:** [July 12, 2025, 2:41pm UTC](https://discourse.slicer.org/t/model-markups-coordinate-systems/43691 "2025-07-12T14:41:43Z")

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I have a model, that I am exporting from 3D slicer by right clicking the model and exporting to file- selecting stl. There is no option to choose coordinate system. I also have a list of closed curves that I want to outp…

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## [Scene views broken?](https://discourse.slicer.org/t/scene-views-broken/43682)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 3\
**Last updated:** [July 11, 2025, 7:04pm UTC](https://discourse.slicer.org/t/scene-views-broken/43682 "2025-07-11T19:04:42Z")

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When I try to use scene views, I can capture the node state but cannot restore from it. This is on latest preview on Mac. There are also messages like this in the log file: Switch to module: "SceneViews" "Segmentation"…

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