# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=218

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

**Page:** 219

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## [How to install extensions from past versions of 3D slicer](https://discourse.slicer.org/t/how-to-install-extensions-from-past-versions-of-3d-slicer/23994)

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**Author:** [@spencer.t.brinker](https://discourse.slicer.org/u/spencer.t.brinker)\
**Replies:** 1\
**Last updated:** [June 21, 2022, 11:59pm UTC](https://discourse.slicer.org/t/how-to-install-extensions-from-past-versions-of-3d-slicer/23994 "2022-06-21T23:59:10Z")

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I have Slicer-4.8.0-win-amd64 on a windows 10 system. I can no longer interface the extension-manager. I have a very specific hierarchy design in a human trial and need to keep version 4.8.0 running on a new computer but…

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## [Can I do segmentation and quantification on volume-rendering image?](https://discourse.slicer.org/t/can-i-do-segmentation-and-quantification-on-volume-rendering-image/23978)

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**Author:** [@user4](https://discourse.slicer.org/u/user4)\
**Replies:** 3\
**Last updated:** [June 21, 2022, 6:27pm UTC](https://discourse.slicer.org/t/can-i-do-segmentation-and-quantification-on-volume-rendering-image/23978 "2022-06-21T18:27:25Z")

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Hi all, I can use Segement Editor Module to make a segmentation in 2D view here Then, I can use Segement Statistics Module to do some quantitative things here. As the above results shown,I can get the Minimum,Max…

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## [Slicer Black screen on opening software](https://discourse.slicer.org/t/slicer-black-screen-on-opening-software/18091)

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**Author:** [@Lucky\_Girish](https://discourse.slicer.org/u/Lucky_Girish)\
**Replies:** 11\
**Last updated:** [June 21, 2022, 5:38pm UTC](https://discourse.slicer.org/t/slicer-black-screen-on-opening-software/18091 "2022-06-21T17:38:50Z")

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Operating system: Windows 10 Home Slicer version: 4.13.0 Expected behavior: Starting with Slicer 3d Actual behavior: A blank black screen is appearing Pls help , i am unable to see any icons/ or options to upload dat…

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## [Slicer opens with black screen on Windows with Slicer-4.11.20210226](https://discourse.slicer.org/t/slicer-opens-with-black-screen-on-windows-with-slicer-4-11-20210226/16531)

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**Author:** [@Hapietsch](https://discourse.slicer.org/u/Hapietsch)\
**Replies:** 9\
**Last updated:** [June 21, 2022, 5:37pm UTC](https://discourse.slicer.org/t/slicer-opens-with-black-screen-on-windows-with-slicer-4-11-20210226/16531 "2022-06-21T17:37:26Z")

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Hi. I had two versions of Slicer on my PC - older stable and preview versions. I downloaded the latest preview build and the latest stable build. I realized that the latest stable build now includes the area measure for …

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## [How to export a red slice view while keeping the pixel value according to the Color Scalar Bar?](https://discourse.slicer.org/t/how-to-export-a-red-slice-view-while-keeping-the-pixel-value-according-to-the-color-scalar-bar/23955)

<div class="topic-metadata">

**Author:** [@user4](https://discourse.slicer.org/u/user4)\
**Replies:** 3\
**Last updated:** [June 21, 2022, 5:09pm UTC](https://discourse.slicer.org/t/how-to-export-a-red-slice-view-while-keeping-the-pixel-value-according-to-the-color-scalar-bar/23955 "2022-06-21T17:09:46Z")

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Hi all, This is a sample data,I want to do some quantitative analysis so I need the pixel values. I can use data probe to see the pixel value marked in blue.Now I want to save this picture,but if I use screen captur…

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## [Place markups through visible model](https://discourse.slicer.org/t/place-markups-through-visible-model/23945)

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**Author:** [@JuanPinera](https://discourse.slicer.org/u/JuanPinera)\
**Replies:** 1\
**Last updated:** [June 21, 2022, 5:52am UTC](https://discourse.slicer.org/t/place-markups-through-visible-model/23945 "2022-06-21T05:52:56Z")

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Hi, I want to put a fiducial on an object that has another object placed in front of it in semi-transparency. The problem I have is that it detects the surface and places it in the second object. I have searched here: S…

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## [Re installing extensions](https://discourse.slicer.org/t/re-installing-extensions/23942)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 1\
**Last updated:** [June 21, 2022, 5:45am UTC](https://discourse.slicer.org/t/re-installing-extensions/23942 "2022-06-21T05:45:24Z")

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I have to re-install extensions each time I install a new version of slicer, is there a faster or alternative way instead of going to the extensions manager and doing it all over? thanks

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## [Cross-sectional image view along 3D-curve (e.g. vessel center line)](https://discourse.slicer.org/t/cross-sectional-image-view-along-3d-curve-e-g-vessel-center-line/23960)

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**Author:** [@DocJoe](https://discourse.slicer.org/u/DocJoe)\
**Replies:** 3\
**Last updated:** [June 21, 2022, 4:40am UTC](https://discourse.slicer.org/t/cross-sectional-image-view-along-3d-curve-e-g-vessel-center-line/23960 "2022-06-21T04:40:08Z")

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Hello all, I would love to get a hint, if there is already a tool that allows me to display a cross-section image perpendicular to a 3D-curve (e.g.e center line). So far, I found great tools for detecting center lines …

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## [Again about autosave](https://discourse.slicer.org/t/again-about-autosave/23970)

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**Author:** [@volkodavmyx](https://discourse.slicer.org/u/volkodavmyx)\
**Replies:** 4\
**Last updated:** [June 20, 2022, 10:56pm UTC](https://discourse.slicer.org/t/again-about-autosave/23970 "2022-06-20T22:56:09Z")

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Hello! I just tried the Autosave utility from the sandbox. It’s very handy, but saving all scene in to a MRB file is too expensive. How can I modify the AutoSave.py if i need to save only Segmentation.seg.nrrd file auto…

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## [Volume subtraction CBCT ](https://discourse.slicer.org/t/volume-subtraction-cbct/23973)

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**Author:** [@Ennio\_Russo\_Clarisci](https://discourse.slicer.org/u/Ennio_Russo_Clarisci)\
**Replies:** 0\
**Last updated:** [June 20, 2022, 10:38pm UTC](https://discourse.slicer.org/t/volume-subtraction-cbct/23973 "2022-06-20T22:38:16Z")

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Operating system: Windows 10 Slicer version: 4.11 Hi everyone, I am a new user of Slicer. I would like to calculate which differences exist in bone volume at two time points, pre-intervention and post-intervention. I …

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## [Segmentation to CFD Mesh](https://discourse.slicer.org/t/segmentation-to-cfd-mesh/23693)

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**Author:** [@Elias\_Karabelas](https://discourse.slicer.org/u/Elias_Karabelas)\
**Replies:** 5\
**Last updated:** [June 20, 2022, 2:44pm UTC](https://discourse.slicer.org/t/segmentation-to-cfd-mesh/23693 "2022-06-20T14:44:59Z")

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Hey there, I have a question concerning the transition from segmentation to meshing. I managed to segment some coronary arteries with the aorta and also have the centerline in there (see my slicer screenshot) In a n…

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## [Metal artefact reduction on CT](https://discourse.slicer.org/t/metal-artefact-reduction-on-ct/12731)

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**Author:** [@kt297](https://discourse.slicer.org/u/kt297)\
**Replies:** 7\
**Last updated:** [June 20, 2022, 6:33am UTC](https://discourse.slicer.org/t/metal-artefact-reduction-on-ct/12731 "2022-06-20T06:33:37Z")

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Hi, I am trying to segment bone with a metal prosthesis. Is there a plugin that will do this and remove the metal at the same time as segmenting the bone?

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## [Is there anyway to use MONAI LABEL on a Macbook?](https://discourse.slicer.org/t/is-there-anyway-to-use-monai-label-on-a-macbook/23921)

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**Author:** [@Celina\_Hallal](https://discourse.slicer.org/u/Celina_Hallal)\
**Replies:** 7\
**Last updated:** [June 19, 2022, 9:29pm UTC](https://discourse.slicer.org/t/is-there-anyway-to-use-monai-label-on-a-macbook/23921 "2022-06-19T21:29:19Z")

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Operating system: MacOS Monterey Slicer version: latest version (5.0) Python version: 3.10.5 I’m a totally newbie, so my questions may sound a little dumb. Is there anyway to use MONAI LABEL on a Mac M1? Probably will…

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## [Unable to load files](https://discourse.slicer.org/t/unable-to-load-files/23946)

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**Author:** [@chandk13](https://discourse.slicer.org/u/chandk13)\
**Replies:** 1\
**Last updated:** [June 19, 2022, 2:11pm UTC](https://discourse.slicer.org/t/unable-to-load-files/23946 "2022-06-19T14:11:53Z")

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I did my segmentation work on different pc. Took all the files on pendrive. Copied it on another laptop. Now trying to load them showing this error Please find attached Ps. Version is same

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## [Question about population Analysis](https://discourse.slicer.org/t/question-about-population-analysis/23932)

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**Author:** [@yuanzhen\_cui](https://discourse.slicer.org/u/yuanzhen_cui)\
**Replies:** 3\
**Last updated:** [June 19, 2022, 1:57pm UTC](https://discourse.slicer.org/t/question-about-population-analysis/23932 "2022-06-19T13:57:19Z")

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Operating system: MacOs Slicer version: slicer5.0.2 Hi everyone, I have implemented population analysis on my dataset which consists of 8 muscles of the same type and I got the mean shape and principal components. Ob…

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## [Segmentations module: don't automatically expand module's settings pane for long file/folder paths](https://discourse.slicer.org/t/segmentations-module-dont-automatically-expand-modules-settings-pane-for-long-file-folder-paths/20260)

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**Author:** [@DIV](https://discourse.slicer.org/u/DIV)\
**Replies:** 4\
**Last updated:** [June 19, 2022, 4:11am UTC](https://discourse.slicer.org/t/segmentations-module-dont-automatically-expand-modules-settings-pane-for-long-file-folder-paths/20260 "2022-06-19T04:11:03Z")

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I have noticed that when I select the Segmentations module the greyish pane at left of screen where all of the settings for that module are entered will expand if the path to the Destination folder under Export to files …

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## [I want to get the surface of a MRI volume](https://discourse.slicer.org/t/i-want-to-get-the-surface-of-a-mri-volume/22912)

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**Author:** [@mikhail\_lermontov](https://discourse.slicer.org/u/mikhail_lermontov)\
**Replies:** 15\
**Last updated:** [June 19, 2022, 12:18am UTC](https://discourse.slicer.org/t/i-want-to-get-the-surface-of-a-mri-volume/22912 "2022-06-19T00:18:49Z")

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Hello, I’m intern engineer in biomedical lab and I’m new with 3D Slicer and 3D visualization / 3D imaging. I am currently working on MRI data of brains and I’m interesting only in the information located at the brain s…

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## [Error downloading pytorch: "AttributeError: module ‘light\_the\_torch’ has no attribute ‘find\_links’"](https://discourse.slicer.org/t/error-downloading-pytorch-attributeerror-module-light-the-torch-has-no-attribute-find-links/23928)

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**Author:** [@hourglassnam](https://discourse.slicer.org/u/hourglassnam)\
**Replies:** 2\
**Last updated:** [June 18, 2022, 5:05pm UTC](https://discourse.slicer.org/t/error-downloading-pytorch-attributeerror-module-light-the-torch-has-no-attribute-find-links/23928 "2022-06-18T17:05:49Z")

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Hello, I want to download PyTorch to use TorchIO for the data augmentation process. I installed TorchIO and PyTorch Utils, but when I tried to install PyTorch using PyTorch Utils it gave me an attribution error. I tri…

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## [Register LeadDBS atlas with patient image](https://discourse.slicer.org/t/register-leaddbs-atlas-with-patient-image/23926)

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**Author:** [@Lin](https://discourse.slicer.org/u/Lin)\
**Replies:** 0\
**Last updated:** [June 8, 2022, 7:31am UTC](https://discourse.slicer.org/t/register-leaddbs-atlas-with-patient-image/23926 "2022-06-08T07:31:23Z")

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hi I have the same question with the topic owner, I can run Lead DBS, and display using it’s rendering method. But I wonder how to use the registration to display in Slicer? The atlases are not aligned with the patient’s…

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## [Problem with packages vtkvmtk and pypes](https://discourse.slicer.org/t/problem-with-packages-vtkvmtk-and-pypes/23923)

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**Author:** [@19lollo95](https://discourse.slicer.org/u/19lollo95)\
**Replies:** 4\
**Last updated:** [June 18, 2022, 2:30pm UTC](https://discourse.slicer.org/t/problem-with-packages-vtkvmtk-and-pypes/23923 "2022-06-18T14:30:35Z")

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I am working with a script that imports vtkvmtk and pypes but I keep getting the following error message: No module named ‘vtkvmtk’ … how can I remedy this? Can I install these packages? If so, from where?

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## [Nvidia AI-assisted annotation (AIAA) for 3D Slicer (4.11.20200930)](https://discourse.slicer.org/t/nvidia-ai-assisted-annotation-aiaa-for-3d-slicer-4-11-20200930/14467)

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**Author:** [@scorey1983](https://discourse.slicer.org/u/scorey1983)\
**Replies:** 10\
**Last updated:** [June 18, 2022, 12:47pm UTC](https://discourse.slicer.org/t/nvidia-ai-assisted-annotation-aiaa-for-3d-slicer-4-11-20200930/14467 "2022-06-18T12:47:36Z")

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Operating system: WIN 10 Slicer version: 4.11.20200930 Expected behavior: Today, when I opened the slicer, I found that the module could not be started. The program prompts no response.

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## [How to do the segmentation of ribcage including the Costal cartilage? ](https://discourse.slicer.org/t/how-to-do-the-segmentation-of-ribcage-including-the-costal-cartilage/23903)

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**Author:** [@Monkeyking123](https://discourse.slicer.org/u/Monkeyking123)\
**Replies:** 8\
**Last updated:** [June 17, 2022, 8:54pm UTC](https://discourse.slicer.org/t/how-to-do-the-segmentation-of-ribcage-including-the-costal-cartilage/23903 "2022-06-17T20:54:36Z")

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Hi everyone It is my first time using 3D slicer along with its tools, mainly for learning the segmentations of ribcages, and heart structures with the aforementioned tools and those in the extensive section(i.e Nvidia A…

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## [Display vectors (arrows) to represent a velocity field on a section plane using python](https://discourse.slicer.org/t/display-vectors-arrows-to-represent-a-velocity-field-on-a-section-plane-using-python/23893)

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**Author:** [@l.geronzi](https://discourse.slicer.org/u/l.geronzi)\
**Replies:** 4\
**Last updated:** [June 17, 2022, 7:45pm UTC](https://discourse.slicer.org/t/display-vectors-arrows-to-represent-a-velocity-field-on-a-section-plane-using-python/23893 "2022-06-17T19:45:49Z")

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Operating system: Windows Slicer version: 5.0.2 Expected behavior: Display of a set of vectors Actual behavior: None Hello, I would be interested in showing vectors reporting the velocity on a cutting plane of a blo…

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## [Mask volume multilabel](https://discourse.slicer.org/t/mask-volume-multilabel/23910)

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**Author:** [@bserrano](https://discourse.slicer.org/u/bserrano)\
**Replies:** 4\
**Last updated:** [June 17, 2022, 7:36pm UTC](https://discourse.slicer.org/t/mask-volume-multilabel/23910 "2022-06-17T19:36:33Z")

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Hi all, I’ve working recently with Mask Volume from Segment Editor, is a very usefull tool in terms of image segmentation. However, it only works with binary labels. It would be possible to add a multilabel option? I m…

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## [Segmentations using HU when Thresholding is not accurate enough](https://discourse.slicer.org/t/segmentations-using-hu-when-thresholding-is-not-accurate-enough/23914)

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**Author:** [@zells](https://discourse.slicer.org/u/zells)\
**Replies:** 2\
**Last updated:** [June 17, 2022, 6:35pm UTC](https://discourse.slicer.org/t/segmentations-using-hu-when-thresholding-is-not-accurate-enough/23914 "2022-06-17T18:35:13Z")

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Hi All, I have a “heat map” DICOM here that I brought into slicer and I need each different color (see images) to be a different segmentation. I cannot use the threshold effect though as each color corresponds …

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## [Autosegmentation of problematic Lung CT](https://discourse.slicer.org/t/autosegmentation-of-problematic-lung-ct/23915)

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**Author:** [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Replies:** 1\
**Last updated:** [June 17, 2022, 6:13pm UTC](https://discourse.slicer.org/t/autosegmentation-of-problematic-lung-ct/23915 "2022-06-17T18:13:41Z")

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During the preparation for the MONAILabel workshop, I noticed that in the public ML Task06\_lung dataset there are several datasets with strange contrasts that display very “dark” initially. Example: lung\_049 These da…

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## [slicer resamples data by itself](https://discourse.slicer.org/t/slicer-resamples-data-by-itself/23176)

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**Author:** [@Berkay](https://discourse.slicer.org/u/Berkay)\
**Replies:** 5\
**Last updated:** [June 17, 2022, 2:22pm UTC](https://discourse.slicer.org/t/slicer-resamples-data-by-itself/23176 "2022-06-17T14:22:54Z")

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Dear all, Data I’m trying to use is in “nii.gz” format and it includes axial data. Normally it has 21 slices in total. After loading data using “data loading” module, program shows maybe 100 slices. When I check proper…

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## [Shut down suddenly](https://discourse.slicer.org/t/shut-down-suddenly/23835)

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**Author:** [@Akila22](https://discourse.slicer.org/u/Akila22)\
**Replies:** 7\
**Last updated:** [June 17, 2022, 12:27pm UTC](https://discourse.slicer.org/t/shut-down-suddenly/23835 "2022-06-17T12:27:24Z")

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Hello, Slicer version :5.0.2 Operating System :Microsoft Windows 10 3D Slicer shut downs suddenly when cropping a hollowed model from DICOM data , Starting by a threshhold selection, then hollowing the model , the fi…

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## [Slicer doesn’t automatically load old scene files](https://discourse.slicer.org/t/slicer-doesn-t-automatically-load-old-scene-files/23904)

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**Author:** [@G\_S](https://discourse.slicer.org/u/G_S)\
**Replies:** 1\
**Last updated:** [June 16, 2022, 1:34pm UTC](https://discourse.slicer.org/t/slicer-doesn-t-automatically-load-old-scene-files/23904 "2022-06-16T13:34:28Z")

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Hello everyone, I have been doing segmentations for months on Slicer. I now have a problem. When I try to open an old file, slicer doesn’t load automatically everything inside it. When I double click on the scene.mml …

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## [Cannot connect to default NVIDIA AI-assisted annotation server](https://discourse.slicer.org/t/cannot-connect-to-default-nvidia-ai-assisted-annotation-server/23902)

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**Author:** [@Monkeyking123](https://discourse.slicer.org/u/Monkeyking123)\
**Replies:** 1\
**Last updated:** [June 16, 2022, 1:30pm UTC](https://discourse.slicer.org/t/cannot-connect-to-default-nvidia-ai-assisted-annotation-server/23902 "2022-06-16T13:30:28Z")

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I was opening 3D slicer but when opening files from “Recent”, Slicer No response Pops out the following message Automatically turns off and exit If opening other sample files which work and trying to use the Nvidia…

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