# Support

**URL:** https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=17

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

**Page:** 18

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## [Using Monai Label in 3DSlicer for Medical Student Research Project](https://discourse.slicer.org/t/using-monai-label-in-3dslicer-for-medical-student-research-project/37309)

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**Author:** [@Saim\_ali](https://discourse.slicer.org/u/Saim_ali)\
**Replies:** 10\
**Last updated:** [January 16, 2026, 3:28am UTC](https://discourse.slicer.org/t/using-monai-label-in-3dslicer-for-medical-student-research-project/37309 "2026-01-16T03:28:47Z")

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Hello, I am a medical student with no computer science background looking for some help with using Monai Label with 3D slicer. My main issue is with connecting to the Monai Server. I was able to follow a tutorial onlin…

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## [Bugs with ROI - Red panes or panes with text](https://discourse.slicer.org/t/bugs-with-roi-red-panes-or-panes-with-text/45788)

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**Author:** [@marklumberjack](https://discourse.slicer.org/u/marklumberjack)\
**Replies:** 1\
**Last updated:** [January 15, 2026, 11:11pm UTC](https://discourse.slicer.org/t/bugs-with-roi-red-panes-or-panes-with-text/45788 "2026-01-15T23:11:09Z")

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I’m new here so I’m not sure if I’m even using everything correctly, but I’m experiencing some bugs when using ROI clipping on an image stack volume.

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## [Segment the body surface using TotalSegmentator](https://discourse.slicer.org/t/segment-the-body-surface-using-totalsegmentator/27666)

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**Author:** [@SoYoung\_Lim](https://discourse.slicer.org/u/SoYoung_Lim)\
**Replies:** 13\
**Last updated:** [January 15, 2026, 5:24am UTC](https://discourse.slicer.org/t/segment-the-body-surface-using-totalsegmentator/27666 "2026-01-15T05:24:25Z")

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Hi, I love this helpful extension! I found that subset - body skin(torso) segmentation is now available! I am wondering if I can use that subset function on 3D Slicer program too. Is there anyone tried segmenting skin …

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## [Slicer-SurfaceFragmentsRegistration](https://discourse.slicer.org/t/slicer-surfacefragmentsregistration/45777)

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**Author:** [@Esteban\_Barreiro](https://discourse.slicer.org/u/Esteban_Barreiro)\
**Replies:** 0\
**Last updated:** [January 14, 2026, 2:58pm UTC](https://discourse.slicer.org/t/slicer-surfacefragmentsregistration/45777 "2026-01-14T14:58:16Z")

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Hi! I work with FDM 3D printing, and recently found this new extension (Slicer-SurfaceFragmentsRegistration) https://github.com/sebastianandress/Slicer-SurfaceFragmentsRegistration/tree/master but I don’t fully unders…

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## [Generating a Deformed Image Using BSpline Transform in 3D Slicer](https://discourse.slicer.org/t/generating-a-deformed-image-using-bspline-transform-in-3d-slicer/45553)

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**Author:** [@A\_Eskandari](https://discourse.slicer.org/u/A_Eskandari)\
**Replies:** 1\
**Last updated:** [January 14, 2026, 2:31pm UTC](https://discourse.slicer.org/t/generating-a-deformed-image-using-bspline-transform-in-3d-slicer/45553 "2026-01-14T14:31:42Z")

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Hello everyone, I need to obtain CT images of a phantom (e.g., a Rando phantom) in two different states: Fixed Image: The initial, undeformed state of the phantom. Moving Image: The same phantom with a known and pre-d…

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## [Feature request: improve the recent file history facilities](https://discourse.slicer.org/t/feature-request-improve-the-recent-file-history-facilities/45774)

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**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 2\
**Last updated:** [January 14, 2026, 7:31am UTC](https://discourse.slicer.org/t/feature-request-improve-the-recent-file-history-facilities/45774 "2026-01-14T07:31:19Z")

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The recent file history disables menu items when the referenced files are not found when Slicer starts. The missing files may be available again if they are on removable media. They may also never appear again and occupy…

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## [CTKResEdit unable to start](https://discourse.slicer.org/t/ctkresedit-unable-to-start/45772)

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**Author:** [@rphellan2210](https://discourse.slicer.org/u/rphellan2210)\
**Replies:** 1\
**Last updated:** [January 14, 2026, 12:56am UTC](https://discourse.slicer.org/t/ctkresedit-unable-to-start/45772 "2026-01-14T00:56:42Z")

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Hello, I am trying to build Slicer and the process requires running CTKResEdit.exe to update some icons, but CTKResEdit fails and it leads to the error below. C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\MSBu…

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## [Body composition measurements (sma, smd, sat, vat) at L3 level](https://discourse.slicer.org/t/body-composition-measurements-sma-smd-sat-vat-at-l3-level/45751)

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**Author:** [@goz](https://discourse.slicer.org/u/goz)\
**Replies:** 3\
**Last updated:** [January 13, 2026, 10:11pm UTC](https://discourse.slicer.org/t/body-composition-measurements-sma-smd-sat-vat-at-l3-level/45751 "2026-01-13T22:11:04Z")

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Hello everyone, I need your help :folded\_hands: I want to measure the sma cm 2, smd hu, sat cm2 and vat cm2 values at L3 level CT dicom images. But the software gives me the cm 3 volume , sat and vat values , how ca…

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## [Plan-Cut on segment's labelmap](https://discourse.slicer.org/t/plan-cut-on-segments-labelmap/45727)

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**Author:** [@shanfl](https://discourse.slicer.org/u/shanfl)\
**Replies:** 4\
**Last updated:** [January 13, 2026, 9:33pm UTC](https://discourse.slicer.org/t/plan-cut-on-segments-labelmap/45727 "2026-01-13T21:33:03Z")

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I need to plane-cut a labelmap of a segment with a vtkplanewidget, but the cutting position is not correct.I think there might be an issue with the conversion from voxel ijk coordinates to RAS coordinates, but I can’t pi…

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## [Oral scan ply file, teeth segmentation](https://discourse.slicer.org/t/oral-scan-ply-file-teeth-segmentation/45614)

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**Author:** [@saeed\_46](https://discourse.slicer.org/u/saeed_46)\
**Replies:** 1\
**Last updated:** [January 13, 2026, 11:45am UTC](https://discourse.slicer.org/t/oral-scan-ply-file-teeth-segmentation/45614 "2026-01-13T11:45:18Z")

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Hello I have some oral scan files in ply format and I want to automatically segment and extract all the healthy and prepared teeth and save each one in a separate ply file. Is this possible in 3D Slicer software? If so…

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## [Hollow 2d markups in slice views](https://discourse.slicer.org/t/hollow-2d-markups-in-slice-views/45754)

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**Author:** [@TomOssability](https://discourse.slicer.org/u/TomOssability)\
**Replies:** 2\
**Last updated:** [January 13, 2026, 12:28am UTC](https://discourse.slicer.org/t/hollow-2d-markups-in-slice-views/45754 "2026-01-13T00:28:56Z")

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Hi, I understand support for 2D operations is limited due to this platform being mostly used for 3D tasks. However, I am developing a python extension that requires key point placement in single slice views, for which I …

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## [TotalSegmentator finishes successfully but Slicer GUI freezes on macOS (M2-Pro Sequoia) after completion](https://discourse.slicer.org/t/totalsegmentator-finishes-successfully-but-slicer-gui-freezes-on-macos-m2-pro-sequoia-after-completion/45753)

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**Author:** [@Lennart99](https://discourse.slicer.org/u/Lennart99)\
**Replies:** 2\
**Last updated:** [January 12, 2026, 6:46pm UTC](https://discourse.slicer.org/t/totalsegmentator-finishes-successfully-but-slicer-gui-freezes-on-macos-m2-pro-sequoia-after-completion/45753 "2026-01-12T18:46:24Z")

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Hi everyone, I am using the TotalSegmentator extension in slicer to segment MRI data. The data is successfully loaded and apparently segmented, however, before loading the segments into slicer and making them accessible…

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## [SUV Quantification Voxel Values differing from Exported Values](https://discourse.slicer.org/t/suv-quantification-voxel-values-differing-from-exported-values/45756)

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**Author:** [@CSalt](https://discourse.slicer.org/u/CSalt)\
**Replies:** 0\
**Last updated:** [January 12, 2026, 6:32pm UTC](https://discourse.slicer.org/t/suv-quantification-voxel-values-differing-from-exported-values/45756 "2026-01-12T18:32:49Z")

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Hi, I am working on some voxel plots comparing a segmented PET region’s SUV values over multiple time points. When I use the segment statistics feature within slicer, I get SUV min/max/average values that match my clini…

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## [DentalSegmentator / nnUNet problems](https://discourse.slicer.org/t/dentalsegmentator-nnunet-problems/45728)

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**Author:** [@Aiden](https://discourse.slicer.org/u/Aiden)\
**Replies:** 4\
**Last updated:** [January 12, 2026, 5:08pm UTC](https://discourse.slicer.org/t/dentalsegmentator-nnunet-problems/45728 "2026-01-12T17:08:34Z")

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I’m having troubles with DentalSegmentator. 3D Slicer 5.10.0 The log: 2026/01/09 16:28:19.241 :: Start nnUNet install with requirements : nnunetv2 2026/01/09 16:28:19.280 :: - Installing nnunetv2 --no-deps... 2026/0…

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## [I can't remove the slice visibility in my 3d views...](https://discourse.slicer.org/t/i-cant-remove-the-slice-visibility-in-my-3d-views/45725)

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**Author:** [@Nednao](https://discourse.slicer.org/u/Nednao)\
**Replies:** 4\
**Last updated:** [January 10, 2026, 4:49pm UTC](https://discourse.slicer.org/t/i-cant-remove-the-slice-visibility-in-my-3d-views/45725 "2026-01-10T16:49:39Z")

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Hi everyone, I hope you’re all doing well. I have a small problem in my 3D view. There is an orange outline displaying the Dorso-Ventral slice visibility of my specimen. I know that I can enable this kind of option by c…

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## [What are the denoising algorithms used to denoise forward projection X-rays in Slicer](https://discourse.slicer.org/t/what-are-the-denoising-algorithms-used-to-denoise-forward-projection-x-rays-in-slicer/45726)

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**Author:** [@Idris\_Sunmola](https://discourse.slicer.org/u/Idris_Sunmola)\
**Replies:** 0\
**Last updated:** [January 9, 2026, 8:44pm UTC](https://discourse.slicer.org/t/what-are-the-denoising-algorithms-used-to-denoise-forward-projection-x-rays-in-slicer/45726 "2026-01-09T20:44:47Z")

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I would like to know which analytical and/or deep learning algorithms Slicer uses to denoise the forward projection X-rays (also known as sinograms). These X-rays exhibit a host of noise profiles, such as beam hardening,…

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## [Convert RTStruct to DICOM SEG](https://discourse.slicer.org/t/convert-rtstruct-to-dicom-seg/45657)

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**Author:** [@SaraROMarques](https://discourse.slicer.org/u/SaraROMarques)\
**Replies:** 1\
**Last updated:** [January 9, 2026, 2:48pm UTC](https://discourse.slicer.org/t/convert-rtstruct-to-dicom-seg/45657 "2026-01-09T14:48:09Z")

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Hello, how can I convert RTStruct to DICOM Seg? I’m having some difficulties…

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## [Slicer Heart documentation](https://discourse.slicer.org/t/slicer-heart-documentation/45660)

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**Author:** [@PaoloZaffino](https://discourse.slicer.org/u/PaoloZaffino)\
**Replies:** 6\
**Last updated:** [January 9, 2026, 3:42am UTC](https://discourse.slicer.org/t/slicer-heart-documentation/45660 "2026-01-09T03:42:03Z")

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Hi all, thank you very much for the SlicerHeart extension! I was wondering if, in addition to the links on the official github page, there is some additional guide/tutorial on how to use the extension. Best, Paolo

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## [Optimal C-arm angulation along a plane from CT](https://discourse.slicer.org/t/optimal-c-arm-angulation-along-a-plane-from-ct/37200)

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**Author:** [@Miguel\_Nobre\_Menezes](https://discourse.slicer.org/u/Miguel_Nobre_Menezes)\
**Replies:** 13\
**Last updated:** [January 8, 2026, 1:50pm UTC](https://discourse.slicer.org/t/optimal-c-arm-angulation-along-a-plane-from-ct/37200 "2026-01-08T13:50:39Z")

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Hi there. I’m an Interventional Cardiologist looking to use 3D Slicer for planning interventions based on CT. Current state of the art software (3mensio) enables C-arm rotation angles along a plane, thereby displaying a …

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## [Applying B-spline Transform to RTDose/RTStructre](https://discourse.slicer.org/t/applying-b-spline-transform-to-rtdose-rtstructre/44482)

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**Author:** [@azam](https://discourse.slicer.org/u/azam)\
**Replies:** 3\
**Last updated:** [January 8, 2026, 11:59am UTC](https://discourse.slicer.org/t/applying-b-spline-transform-to-rtdose-rtstructre/44482 "2026-01-08T11:59:47Z")

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Hello everyone, I am working on registering two CT images of the pelvic region, which often exhibit significant anatomical changes, especially in organs like the bladder. I have performed a B-spline registration using …

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## [Crash since SimpleITK is a python wheel](https://discourse.slicer.org/t/crash-since-simpleitk-is-a-python-wheel/45696)

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**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 2\
**Last updated:** [January 7, 2026, 10:19am UTC](https://discourse.slicer.org/t/crash-since-simpleitk-is-a-python-wheel/45696 "2026-01-07T10:19:08Z")

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This line simply crashes Slicer since SimpleITK is no longer built: import SimpleITK as sitk Selecting the Filters/Simple filters menu item also crashes Slicer. How can these troubles be solved? Using 5.11.0-2026-01-…

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## [Can tumor volume be accurately measured?](https://discourse.slicer.org/t/can-tumor-volume-be-accurately-measured/45593)

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**Author:** [@jung](https://discourse.slicer.org/u/jung)\
**Replies:** 2\
**Last updated:** [January 7, 2026, 3:11am UTC](https://discourse.slicer.org/t/can-tumor-volume-be-accurately-measured/45593 "2026-01-07T03:11:57Z")

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Can tumor volume be accurately measure? on CT or MRI for medical and research purposes, even in anatomically complex regions such as sinonasal cancers?

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## [General Registration (BRAINS) consistently reports the error “All samples map outside the moving image buffer,” even when the same image is used for both the fixed and moving volumes for a specific image](https://discourse.slicer.org/t/general-registration-brains-consistently-reports-the-error-all-samples-map-outside-the-moving-image-buffer-even-when-the-same-image-is-used-for-both-the-fixed-and-moving-volumes-for-a-specific-image/45677)

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**Author:** [@ffr](https://discourse.slicer.org/u/ffr)\
**Replies:** 2\
**Last updated:** [January 6, 2026, 9:34pm UTC](https://discourse.slicer.org/t/general-registration-brains-consistently-reports-the-error-all-samples-map-outside-the-moving-image-buffer-even-when-the-same-image-is-used-for-both-the-fixed-and-moving-volumes-for-a-specific-image/45677 "2026-01-06T21:34:07Z")

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I am using Windows version 5.10.0 Please find the image here. It is a normal CT image, and I don’t know why BRAINS is not working for this specific case. Thank you very much for any help.

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## [Add Segment to SegmentationNode uses invalid color values (scalar) and adds a new colortable node](https://discourse.slicer.org/t/add-segment-to-segmentationnode-uses-invalid-color-values-scalar-and-adds-a-new-colortable-node/45498)

<div class="topic-metadata">

**Author:** [@baderstine](https://discourse.slicer.org/u/baderstine)\
**Replies:** 5\
**Last updated:** [January 3, 2026, 11:28pm UTC](https://discourse.slicer.org/t/add-segment-to-segmentationnode-uses-invalid-color-values-scalar-and-adds-a-new-colortable-node/45498 "2026-01-03T23:28:36Z")

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Summary: I am attempting to import/edit/export segmentations from numpy to slicer to numpy. I am using custom color tables but am getting invalid color IDs on export after a segment has been added. For example, my col…

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## [In 3D Slicer, is it possible to simulate femur cut in real-time without iMSTK?](https://discourse.slicer.org/t/in-3d-slicer-is-it-possible-to-simulate-femur-cut-in-real-time-without-imstk/45543)

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**Author:** [@Vincent](https://discourse.slicer.org/u/Vincent)\
**Replies:** 6\
**Last updated:** [January 2, 2026, 5:20am UTC](https://discourse.slicer.org/t/in-3d-slicer-is-it-possible-to-simulate-femur-cut-in-real-time-without-imstk/45543 "2026-01-02T05:20:38Z")

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Hi, Support and development of iMSTK has been discontinued since May-02-2025. I would like to simulate femur cut in real-time with 3D Slicer. I have tried Mask volume effect, but it is not fast enough (the FPS is very …

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## [Curvature, torsion from VMTK](https://discourse.slicer.org/t/curvature-torsion-from-vmtk/45652)

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**Author:** [@kuoi](https://discourse.slicer.org/u/kuoi)\
**Replies:** 0\
**Last updated:** [January 1, 2026, 5:24pm UTC](https://discourse.slicer.org/t/curvature-torsion-from-vmtk/45652 "2026-01-01T17:24:12Z")

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Hello, I am using the Extract Centerline module. I obtained one centerline and one table containing a single line with a pair of curvature and torsion values. I noticed that curvature and torsion are reported in the exp…

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## [Link a transform's visibility to transformed volume visibility](https://discourse.slicer.org/t/link-a-transforms-visibility-to-transformed-volume-visibility/45604)

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**Author:** [@shai-ikko](https://discourse.slicer.org/u/shai-ikko)\
**Replies:** 5\
**Last updated:** [December 31, 2025, 4:19pm UTC](https://discourse.slicer.org/t/link-a-transforms-visibility-to-transformed-volume-visibility/45604 "2025-12-31T16:19:34Z")

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Hi, In my application, I want to load a volume, and give the user controls to spin it around. So when I load the volume, I also create a Transform, make the volume observe it, and then call transformNode.GetDisplayNode(…

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## [Segment Editor crashes during Logical Operators in segment editor (Intersect) - Windows 10 - Lenovo LOQ 5.10.0](https://discourse.slicer.org/t/segment-editor-crashes-during-logical-operators-in-segment-editor-intersect-windows-10-lenovo-loq-5-10-0/45635)

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**Author:** [@zahra\_Tabasi](https://discourse.slicer.org/u/zahra_Tabasi)\
**Replies:** 4\
**Last updated:** [December 30, 2025, 10:54pm UTC](https://discourse.slicer.org/t/segment-editor-crashes-during-logical-operators-in-segment-editor-intersect-windows-10-lenovo-loq-5-10-0/45635 "2025-12-30T22:54:41Z")

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Title: Segment Editor crashes during Logical Operators (Intersect) - Windows 10 - Lenovo LOQ Slicer version: 5.10.0 (stable) + preview versions tested OS: Windows 10 Hardware: Lenovo LOQ 15IRH8 (i7-13th gen, 32GB RAM,…

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## [Downloading older releases is problematic](https://discourse.slicer.org/t/downloading-older-releases-is-problematic/45645)

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**Author:** [@dzenanz](https://discourse.slicer.org/u/dzenanz)\
**Replies:** 1\
**Last updated:** [December 30, 2025, 8:30pm UTC](https://discourse.slicer.org/t/downloading-older-releases-is-problematic/45645 "2025-12-30T20:30:08Z")

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Accessing older releases does not offer download of previous stable releases. I had to take a good look at access older releases page to come up with this link to what I wanted: https://download.slicer.org/download?os=wi…

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## [Clarification on Segment Statistics: Surface Area vs. Cross-Sectional Area (CSA) for Muscle Analysis](https://discourse.slicer.org/t/clarification-on-segment-statistics-surface-area-vs-cross-sectional-area-csa-for-muscle-analysis/45559)

<div class="topic-metadata">

**Author:** [@GaetanoGazze](https://discourse.slicer.org/u/GaetanoGazze)\
**Replies:** 3\
**Last updated:** [December 30, 2025, 6:41pm UTC](https://discourse.slicer.org/t/clarification-on-segment-statistics-surface-area-vs-cross-sectional-area-csa-for-muscle-analysis/45559 "2025-12-30T18:41:31Z")

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Hi everyone, I am performing a quantitative body composition analysis on single-slice CT scans (at the D10 level) using the Segment Statistics module in 3D Slicer. I would like to clarify a methodological doubt to ensur…

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