# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=259

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

**Page:** 260

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## [Issue during voxelization of a model stl](https://discourse.slicer.org/t/issue-during-voxelization-of-a-model-stl/7687)

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**Author:** [@Clara](https://discourse.slicer.org/u/Clara)\
**Replies:** 6\
**Last updated:** [September 21, 2021, 8:02pm UTC](https://discourse.slicer.org/t/issue-during-voxelization-of-a-model-stl/7687 "2021-09-21T20:02:51Z")

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Hi all! I have to convert a surface model stl into a voxelized mask, with 1s inside and 0s outside. It is important that the mask has the same dimensions and voxel size as another volume I want to register with. In Matl…

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## [Slicer crashes when creating h5 file](https://discourse.slicer.org/t/slicer-crashes-when-creating-h5-file/19733)

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**Author:** [@szymswiat](https://discourse.slicer.org/u/szymswiat)\
**Replies:** 4\
**Last updated:** [September 21, 2021, 7:21pm UTC](https://discourse.slicer.org/t/slicer-crashes-when-creating-h5-file/19733 "2021-09-21T19:21:28Z")

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Problem report for Slicer 4.13.0-2021-09-13 linux-amd64: When I’m trying to create h5 file in scripted module using h5py package, Slicer 4.13 crashes without any error (even in attached debugger). File appears in filesy…

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## [View segments on slices in 3D window before generating surface](https://discourse.slicer.org/t/view-segments-on-slices-in-3d-window-before-generating-surface/19791)

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**Author:** [@tsehrhardt](https://discourse.slicer.org/u/tsehrhardt)\
**Replies:** 2\
**Last updated:** [September 21, 2021, 6:13pm UTC](https://discourse.slicer.org/t/view-segments-on-slices-in-3d-window-before-generating-surface/19791 "2021-09-21T18:13:44Z")

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Is there a way to visualize a segment on my 2D slices in the 3D window without actually generating the 3D surface? I have a bone with a large metal piece but there are also metal particulates and also areas of bone arou…

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## [How to decouple segmentations from model and hide the segmentations slice views?](https://discourse.slicer.org/t/how-to-decouple-segmentations-from-model-and-hide-the-segmentations-slice-views/19786)

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**Author:** [@srivastavava](https://discourse.slicer.org/u/srivastavava)\
**Replies:** 1\
**Last updated:** [September 21, 2021, 5:51pm UTC](https://discourse.slicer.org/t/how-to-decouple-segmentations-from-model-and-hide-the-segmentations-slice-views/19786 "2021-09-21T17:51:05Z")

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import slicer import qt fname = qt.QFileDialog.getOpenFileName() loadedVolumeNode = slicer.util.loadVolume(fname) segfname = qt.QFileDialog.getOpenFileName() segmentationNode = slicer.util.loadSegmentation(segfname) la…

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## [Getting stream of probe position from another application into Slicer/SlicerIGT](https://discourse.slicer.org/t/getting-stream-of-probe-position-from-another-application-into-slicer-slicerigt/19758)

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**Author:** [@srivastavava](https://discourse.slicer.org/u/srivastavava)\
**Replies:** 1\
**Last updated:** [September 21, 2021, 4:55pm UTC](https://discourse.slicer.org/t/getting-stream-of-probe-position-from-another-application-into-slicer-slicerigt/19758 "2021-09-21T16:55:34Z")

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Hi there, I am trying to integrate Slicer/SlicerIGT to work with a preexisitng application which publishes the coordinates of a probe relative to a model in a specific coordinate system. I want the probe position to be …

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## [Cropping and Segmentation of Thin Specimen](https://discourse.slicer.org/t/cropping-and-segmentation-of-thin-specimen/19776)

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**Author:** [@CSULB\_MammalLab](https://discourse.slicer.org/u/CSULB_MammalLab)\
**Replies:** 4\
**Last updated:** [September 21, 2021, 4:14pm UTC](https://discourse.slicer.org/t/cropping-and-segmentation-of-thin-specimen/19776 "2021-09-21T16:14:20Z")

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Hello All, I am working with pangolin study skins that were scanned as a bundle. I am looking to take thickness measurements at specific intervals of each study skin but often times I am unable to cleanly crop out each …

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## [DICOM Import Adds 0 New Patients](https://discourse.slicer.org/t/dicom-import-adds-0-new-patients/19766)

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**Author:** [@ckbow](https://discourse.slicer.org/u/ckbow)\
**Replies:** 10\
**Last updated:** [September 21, 2021, 1:57pm UTC](https://discourse.slicer.org/t/dicom-import-adds-0-new-patients/19766 "2021-09-21T13:57:54Z")

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Operating system: Windows 10 Pro Slicer version: 4.11 Expected behavior: Actual behavior: When I try to import DICOM files, I get a message that says “Added 0 New Patients, 0 Studies” etc. This only occurs with certa…

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## [Move effects from SegmentEditorExtraEffects into Slicer core](https://discourse.slicer.org/t/move-effects-from-segmenteditorextraeffects-into-slicer-core/19768)

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**Author:** [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Replies:** 10\
**Last updated:** [September 20, 2021, 7:03pm UTC](https://discourse.slicer.org/t/move-effects-from-segmenteditorextraeffects-into-slicer-core/19768 "2021-09-20T19:03:33Z")

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To make Slicer more user-friendly for beginners and more efficient for all: Could you please add the great effects from SegmentEditorExtraEffects to the default installation of the next stable build? Thank you.

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## [How to do custom rotation sliders and transformation buttons with python?](https://discourse.slicer.org/t/how-to-do-custom-rotation-sliders-and-transformation-buttons-with-python/19747)

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**Author:** [@jmhuie](https://discourse.slicer.org/u/jmhuie)\
**Replies:** 6\
**Last updated:** [September 20, 2021, 5:01pm UTC](https://discourse.slicer.org/t/how-to-do-custom-rotation-sliders-and-transformation-buttons-with-python/19747 "2021-09-20T17:01:51Z")

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Hi all, I am currently working on a scripted module that requires a user to rotate segments beforehand (currently done in the transforms module). To improve user accessibility, I would like to implement 1 or 2 feature i…

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## [Submillimetric COVID-19 CT dataset and automatic lung tissue labeling extension](https://discourse.slicer.org/t/submillimetric-covid-19-ct-dataset-and-automatic-lung-tissue-labeling-extension/16007)

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**Author:** [@PaoloZaffino](https://discourse.slicer.org/u/PaoloZaffino)\
**Replies:** 13\
**Last updated:** [September 20, 2021, 2:51pm UTC](https://discourse.slicer.org/t/submillimetric-covid-19-ct-dataset-and-automatic-lung-tissue-labeling-extension/16007 "2021-09-20T14:51:01Z")

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Hi all, I apologize if I’m posting in the wrong section (if so please remove/move this post). We just released a free (non commercial use) dataset made of 62 submillimetric CT scans of COVID-19 positive patients. Auto…

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## [Total Lesion glycolysis](https://discourse.slicer.org/t/total-lesion-glycolysis/19756)

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**Author:** [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Replies:** 1\
**Last updated:** [September 20, 2021, 12:40pm UTC](https://discourse.slicer.org/t/total-lesion-glycolysis/19756 "2021-09-20T12:40:52Z")

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Hi all, can help me, is it 3D Slicer able to calculate the total lesion glycolysis (TLG) for Pet Ct?

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## [How to fill the liver area?](https://discourse.slicer.org/t/how-to-fill-the-liver-area/19742)

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**Author:** [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Replies:** 3\
**Last updated:** [September 20, 2021, 10:08am UTC](https://discourse.slicer.org/t/how-to-fill-the-liver-area/19742 "2021-09-20T10:08:07Z")

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Hi all, Does anyone know how to fill the area of the liver in a red circle? I used Nvidia Auto segmentation Clara

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## [Weird Display Issue?](https://discourse.slicer.org/t/weird-display-issue/19751)

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**Author:** [@mollyselba](https://discourse.slicer.org/u/mollyselba)\
**Replies:** 1\
**Last updated:** [September 20, 2021, 12:05am UTC](https://discourse.slicer.org/t/weird-display-issue/19751 "2021-09-20T00:05:07Z")

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Has anyone else had this issue with random circles appearing in their volumes? The issue only appeared when I switched to the more recent version of 3D Slicer. The size/configuration of circles does not change when I zoo…

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## [What type of landmarking should I use?](https://discourse.slicer.org/t/what-type-of-landmarking-should-i-use/19531)

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**Author:** [@lccmyers](https://discourse.slicer.org/u/lccmyers)\
**Replies:** 2\
**Last updated:** [September 19, 2021, 4:59pm UTC](https://discourse.slicer.org/t/what-type-of-landmarking-should-i-use/19531 "2021-09-19T16:59:34Z")

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I’m working on a project on vertebral morphology, and would like to use landmarking to compare morphology across my sample. However, I’m not sure the best way to approach the landmarking, because I’m only interested in s…

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## [Vmtk Module - Centerline curve/properties Breaks](https://discourse.slicer.org/t/vmtk-module-centerline-curve-properties-breaks/19741)

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**Author:** [@adamgranthendry](https://discourse.slicer.org/u/adamgranthendry)\
**Replies:** 3\
**Last updated:** [September 19, 2021, 4:40pm UTC](https://discourse.slicer.org/t/vmtk-module-centerline-curve-properties-breaks/19741 "2021-09-19T16:40:32Z")

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When creating a vessel centerline, I can create a model, but when I check to have the curve or properties output, the program hangs and dies. I am using 3D Slicer 4.13.0-2021-09-16

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## [3d printer extenstion](https://discourse.slicer.org/t/3d-printer-extenstion/19743)

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**Author:** [@full\_stack\_master](https://discourse.slicer.org/u/full_stack_master)\
**Replies:** 1\
**Last updated:** [September 19, 2021, 2:05pm UTC](https://discourse.slicer.org/t/3d-printer-extenstion/19743 "2021-09-19T14:05:47Z")

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I have installed the latest version right now. I can not find the extension for 3d printer. Can you let me know the extension and g code generator for 3d slicer.

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## [Resample Scalar Volumes - Scripting in Python](https://discourse.slicer.org/t/resample-scalar-volumes-scripting-in-python/19736)

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**Author:** [@Sharada](https://discourse.slicer.org/u/Sharada)\
**Replies:** 9\
**Last updated:** [September 18, 2021, 9:43pm UTC](https://discourse.slicer.org/t/resample-scalar-volumes-scripting-in-python/19736 "2021-09-18T21:43:52Z")

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Hello, I am trying to generate transformations and resample scalar volumes in Slicer programmatically with Python. And have two questions: I am unable to find a scripted module corresponding to ‘Resample Scalar/Vector…

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## [Pixel Resolution on Philips 4D US DICOM](https://discourse.slicer.org/t/pixel-resolution-on-philips-4d-us-dicom/19693)

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**Author:** [@echo\_learner](https://discourse.slicer.org/u/echo_learner)\
**Replies:** 2\
**Last updated:** [September 18, 2021, 9:13pm UTC](https://discourse.slicer.org/t/pixel-resolution-on-philips-4d-us-dicom/19693 "2021-09-18T21:13:35Z")

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Operating system: Ubuntu 16.04 Slicer version: 4.11 Expected behavior: Actual behavior: Hello, I’m fairly new to slicer, so I apologize if this question has been asked already. I couldn’t find the answer. Is the imag…

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## [Hausdorff Distance](https://discourse.slicer.org/t/hausdorff-distance/8443)

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**Author:** [@MFS-YES](https://discourse.slicer.org/u/MFS-YES)\
**Replies:** 7\
**Last updated:** [September 18, 2021, 11:25am UTC](https://discourse.slicer.org/t/hausdorff-distance/8443 "2021-09-18T11:25:33Z")

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Hello! I compute Dice and Hausdorff Distance, you can see the result. So, I know that Dice similarity ranged from 0 to 1. How Hausdorff distance was ranged? Consequently, how to interpret this result. Any explanation w…

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## [vtkm Extension: Cannot Place Fiducial](https://discourse.slicer.org/t/vtkm-extension-cannot-place-fiducial/19735)

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**Author:** [@adamgranthendry](https://discourse.slicer.org/u/adamgranthendry)\
**Replies:** 7\
**Last updated:** [September 18, 2021, 2:54am UTC](https://discourse.slicer.org/t/vtkm-extension-cannot-place-fiducial/19735 "2021-09-18T02:54:36Z")

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Problem: I cannot place fiducials on my 3D STL model for extracting centerlines. Please let me know if I am performing a step incorrectly. System: OS: Windows 10 3D Slicer: 4.10.2 Steps to Reproduce Choose file to a…

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## [Scalar Color Mapping widget is missing in Volume Rendering](https://discourse.slicer.org/t/scalar-color-mapping-widget-is-missing-in-volume-rendering/19715)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 2\
**Last updated:** [September 18, 2021, 12:06am UTC](https://discourse.slicer.org/t/scalar-color-mapping-widget-is-missing-in-volume-rendering/19715 "2021-09-18T00:06:11Z")

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This is with 9-15 Preview on windows:

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## [Color (RGB) volume rendering](https://discourse.slicer.org/t/color-rgb-volume-rendering/19732)

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**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 0\
**Last updated:** [September 17, 2021, 11:56pm UTC](https://discourse.slicer.org/t/color-rgb-volume-rendering/19732 "2021-09-17T23:56:51Z")

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In recent Slicer Preview Releases, color volume rendering has been made much easier to access. While previously an alpha channel had to be created manually for rendering color RGB volumes, now the alpha channel is create…

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## [Simultaneous segmentation of multiple vertebral bodies](https://discourse.slicer.org/t/simultaneous-segmentation-of-multiple-vertebral-bodies/19697)

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**Author:** [@Siegmund\_Lang](https://discourse.slicer.org/u/Siegmund_Lang)\
**Replies:** 4\
**Last updated:** [September 17, 2021, 7:43pm UTC](https://discourse.slicer.org/t/simultaneous-segmentation-of-multiple-vertebral-bodies/19697 "2021-09-17T19:43:56Z")

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Dear Slicer Support Team, i am looking for a convenient method to simultaneously segment multiple vertebral bodies, similar as seen in this youtube tutorial on serial smooth of the segmentations: Is there…

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## [How is mean attenuation calculated?](https://discourse.slicer.org/t/how-is-mean-attenuation-calculated/19594)

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**Author:** [@Mark\_Brahier](https://discourse.slicer.org/u/Mark_Brahier)\
**Replies:** 4\
**Last updated:** [September 17, 2021, 1:52pm UTC](https://discourse.slicer.org/t/how-is-mean-attenuation-calculated/19594 "2021-09-17T13:52:37Z")

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How does 3D slicer calculate the output ‘mean attenuation’? For example, I select the range of -190 to -30 HU to capture adipose tissue, and I am interested in both the volume and mean attenuation. I always assumed that …

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## [Build Slicer on Windows 10 Failed](https://discourse.slicer.org/t/build-slicer-on-windows-10-failed/2232)

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**Author:** [@leochan2009](https://discourse.slicer.org/u/leochan2009)\
**Replies:** 49\
**Last updated:** [September 17, 2021, 7:27am UTC](https://discourse.slicer.org/t/build-slicer-on-windows-10-failed/2232 "2021-09-17T07:27:08Z")

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Hi, Did anyone have succesfully built the latest Slicer on Windows 10 machine. I am building slicer on my Windows 10 machine, and the compiler is “Visual studio 14 2015”. The error message came from the qSlicerApplica…

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## [Error: Command 'elastix' returned non-zero exit status 3221225785.](https://discourse.slicer.org/t/error-command-elastix-returned-non-zero-exit-status-3221225785/19255)

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**Author:** [@srathee](https://discourse.slicer.org/u/srathee)\
**Replies:** 3\
**Last updated:** [September 16, 2021, 10:43pm UTC](https://discourse.slicer.org/t/error-command-elastix-returned-non-zero-exit-status-3221225785/19255 "2021-09-16T22:43:57Z")

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HI: I am completely new to 3D slicer, downloaded 2 days. I wanted to use Elastix and tried it using the MR tumor sample images, but I get the message: Error: Command ‘elastix’ returned non-zero exit status 3221225785. I…

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## [CIP (chest imaging platform) module](https://discourse.slicer.org/t/cip-chest-imaging-platform-module/12125)

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**Author:** [@szhang](https://discourse.slicer.org/u/szhang)\
**Replies:** 6\
**Last updated:** [September 16, 2021, 7:47pm UTC](https://discourse.slicer.org/t/cip-chest-imaging-platform-module/12125 "2021-09-16T19:47:27Z")

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Hello, I would like to call the module segmentlungairways in a loadable module, but not sure what is the syntax and what parameters are needed. Could you please provide an example? Thank you!

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## [Collision Detection](https://discourse.slicer.org/t/collision-detection/19635)

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**Author:** [@Fluvio\_Lobo](https://discourse.slicer.org/u/Fluvio_Lobo)\
**Replies:** 6\
**Last updated:** [September 16, 2021, 6:00pm UTC](https://discourse.slicer.org/t/collision-detection/19635 "2021-09-16T18:00:13Z")

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Here is a follow-up on the topic of collision detection as suggested by @mau\_igna\_06 on this post. Following @manjula example, I was able to integrate the vtk.collisionDetectionFilter() into my code; def findMeshCollis…

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## [Build for mac from windows](https://discourse.slicer.org/t/build-for-mac-from-windows/19667)

<div class="topic-metadata">

**Author:** [@sheerinaseem](https://discourse.slicer.org/u/sheerinaseem)\
**Replies:** 2\
**Last updated:** [September 16, 2021, 2:59pm UTC](https://discourse.slicer.org/t/build-for-mac-from-windows/19667 "2021-09-16T14:59:19Z")

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Our team of developers are working on building a teaching and education tool using slicer. The development is currently being done on a Windows setup. I however have a mac. Is there a way the build can be genrated for a …

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## [Searching for online CBCT scans](https://discourse.slicer.org/t/searching-for-online-cbct-scans/19082)

<div class="topic-metadata">

**Author:** [@Tekk\_ya](https://discourse.slicer.org/u/Tekk_ya)\
**Replies:** 13\
**Last updated:** [September 16, 2021, 2:07pm UTC](https://discourse.slicer.org/t/searching-for-online-cbct-scans/19082 "2021-09-16T14:07:17Z")

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Dear all, I am looking for some online CBCT scan datasets for my project. Mainly, I am interested in datasets of human jaws including teeth and jawbones. Could you please let me know if there are any available datasets …

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