# Feature requests

**URL:** https://discourse.slicer.org/c/support/feature-requests/9.md?page=2

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

**Page:** 3

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## [Best tutorials and added tools for volume rendering](https://discourse.slicer.org/t/best-tutorials-and-added-tools-for-volume-rendering/46688)

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**Author:** [@sulli419](https://discourse.slicer.org/u/sulli419)\
**Replies:** 6\
**Last updated:** [April 9, 2026, 9:52pm UTC](https://discourse.slicer.org/t/best-tutorials-and-added-tools-for-volume-rendering/46688 "2026-04-09T21:52:48Z")

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The flexibility of the volume rendering feature is quite impressive, and it seems like this would be useful for finding things in 3D (not just making them pretty). Are there any good expert tutorials that go through how…

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## [I can not open saved files/ GPA](https://discourse.slicer.org/t/i-can-not-open-saved-files-gpa/46504)

<div class="topic-metadata">

**Author:** [@Saaalz](https://discourse.slicer.org/u/Saaalz)\
**Replies:** 2\
**Last updated:** [April 2, 2026, 8:18am UTC](https://discourse.slicer.org/t/i-can-not-open-saved-files-gpa/46504 "2026-04-02T08:18:39Z")

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Please, I don’t know why I can’t open saved file/ 3D slicer / GPA, saved data is there and has size, however, when I try to open give me the following message. I just started using the Slicer few weeks ago only. Thank yo…

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## [How can I perform segmentation of the masticatory muscles (temporalis, masseter, pterygoids) using MR images?](https://discourse.slicer.org/t/how-can-i-perform-segmentation-of-the-masticatory-muscles-temporalis-masseter-pterygoids-using-mr-images/46466)

<div class="topic-metadata">

**Author:** [@Alirasat](https://discourse.slicer.org/u/Alirasat)\
**Replies:** 0\
**Last updated:** [March 16, 2026, 6:00pm UTC](https://discourse.slicer.org/t/how-can-i-perform-segmentation-of-the-masticatory-muscles-temporalis-masseter-pterygoids-using-mr-images/46466 "2026-03-16T18:00:50Z")

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I want to perform segmentation of the masticatory muscles (temporalis, masseter, and pterygoids) on 1.5-Tesla MR images, but I have not been able to achieve this using MONAI or TotalSegmentator. I would be very grateful …

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## [Synthetic PET from CT ](https://discourse.slicer.org/t/synthetic-pet-from-ct/37066)

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**Author:** [@oismaster](https://discourse.slicer.org/u/oismaster)\
**Replies:** 3\
**Last updated:** [February 28, 2026, 10:26am UTC](https://discourse.slicer.org/t/synthetic-pet-from-ct/37066 "2026-02-28T10:26:21Z")

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This paper ( PMID: \[38471502\] Synthetic PET from CT improves diagnosis and prognosis for lung cancer: Proof of concept - PubMed) describes a process to use a CT to predict what the PET will look like. Is this a useful m…

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## [Surface model turns black under transformation](https://discourse.slicer.org/t/surface-model-turns-black-under-transformation/46065)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 4\
**Last updated:** [February 5, 2026, 7:01pm UTC](https://discourse.slicer.org/t/surface-model-turns-black-under-transformation/46065 "2026-02-05T19:01:19Z")

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When I reflect a model node using a linear transform node that has a reflection, the visualization of it in 3D unexpectedly turns black. I gather from other posts and LLM consultation that this is because a transform wi…

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## [Lung segmentator not anymore in extensions. Any help?](https://discourse.slicer.org/t/lung-segmentator-not-anymore-in-extensions-any-help/46040)

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**Author:** [@MartinMD89](https://discourse.slicer.org/u/MartinMD89)\
**Replies:** 1\
**Last updated:** [February 3, 2026, 10:30am UTC](https://discourse.slicer.org/t/lung-segmentator-not-anymore-in-extensions-any-help/46040 "2026-02-03T10:30:42Z")

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Hi everyone, paediatric surgeon here. We are planning to perform an operation on a with CPAM and I wanted to create s segmentation of the lungs and the lesion. Some time ago, i used this lung segmentator extension. Now …

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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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## [Removal of Lightbox Mode](https://discourse.slicer.org/t/removal-of-lightbox-mode/45227)

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**Author:** [@dokay1](https://discourse.slicer.org/u/dokay1)\
**Replies:** 3\
**Last updated:** [December 21, 2025, 8:20pm UTC](https://discourse.slicer.org/t/removal-of-lightbox-mode/45227 "2025-12-21T20:20:00Z")

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I’ve just installed Version 5.10.0 to realize that Lightbox view was removed. While I understand that many don’t use it, it was the single most helpful image review setting. It allows one to review and compare thick sli…

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## [User Discoverability Issues in Slicer 5.10](https://discourse.slicer.org/t/user-discoverability-issues-in-slicer-5-10/45187)

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**Author:** [@alireza](https://discourse.slicer.org/u/alireza)\
**Replies:** 8\
**Last updated:** [November 22, 2025, 3:13am UTC](https://discourse.slicer.org/t/user-discoverability-issues-in-slicer-5-10/45187 "2025-11-22T03:13:37Z")

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Hey everyone, I recently upgraded to Slicer 5.10, and I wanted to share some feedback regarding user discoverability. Specifically, I noticed that some commonly used buttons, such as “New Segmentation” and “New Transfor…

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## [Integration with AWS HealthImaging](https://discourse.slicer.org/t/integration-with-aws-healthimaging/42604)

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**Author:** [@ksidis](https://discourse.slicer.org/u/ksidis)\
**Replies:** 4\
**Last updated:** [November 20, 2025, 1:46pm UTC](https://discourse.slicer.org/t/integration-with-aws-healthimaging/42604 "2025-11-20T13:46:04Z")

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Hello, Thank you for providing this amazing tool. I recently got involved in a PoT about AWS HealthImaging (AHI) service (formerly known as AWS HealthLake). After a quick look I realised that out of the box it only su…

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## [Using 3d slicer and python](https://discourse.slicer.org/t/using-3d-slicer-and-python/45037)

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**Author:** [@Shveta\_Duggal](https://discourse.slicer.org/u/Shveta_Duggal)\
**Replies:** 0\
**Last updated:** [November 11, 2025, 2:31pm UTC](https://discourse.slicer.org/t/using-3d-slicer-and-python/45037 "2025-11-11T14:31:13Z")

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Where is the link for segmentation? Thank you so much

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## [Support for 2D transforms?](https://discourse.slicer.org/t/support-for-2d-transforms/34701)

<div class="topic-metadata">

**Author:** [@dzenanz](https://discourse.slicer.org/u/dzenanz)\
**Replies:** 3\
**Last updated:** [November 10, 2025, 4:20pm UTC](https://discourse.slicer.org/t/support-for-2d-transforms/34701 "2025-11-10T16:20:48Z")

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sample2D.tfm #Insight Transform File V1.0 #Transform 0 Transform: AffineTransform\_float\_2\_2 Parameters: 0.99985015 0.017311562 -0.017311562 0.99985015 -0.64851546 -0.7623114 FixedParameters: 0 0 when opened in Slicer, …

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## [Moose Extension was ERROR](https://discourse.slicer.org/t/moose-extension-was-error/44998)

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**Author:** [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Replies:** 1\
**Last updated:** [November 8, 2025, 5:00am UTC](https://discourse.slicer.org/t/moose-extension-was-error/44998 "2025-11-08T05:00:21Z")

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Dear All, I am faced problem since install dependencies for Moose Extension. Traceback (most recent call last): File “D:\\Slicer 5.8.1\\bin\\Python\\slicer\\util.py”, line 3303, in tryWithErrorDisplay yield File “D:/Slic…

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## [Feature request: add more recent file history facilities](https://discourse.slicer.org/t/feature-request-add-more-recent-file-history-facilities/44848)

<div class="topic-metadata">

**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 0\
**Last updated:** [October 22, 2025, 5:30pm UTC](https://discourse.slicer.org/t/feature-request-add-more-recent-file-history-facilities/44848 "2025-10-22T17:30:04Z")

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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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## [Adjust segmentation transparency of orthoslices and volumes independently for better contrast in 3d view](https://discourse.slicer.org/t/adjust-segmentation-transparency-of-orthoslices-and-volumes-independently-for-better-contrast-in-3d-view/44653)

<div class="topic-metadata">

**Author:** [@sulli419](https://discourse.slicer.org/u/sulli419)\
**Replies:** 5\
**Last updated:** [October 4, 2025, 8:32pm UTC](https://discourse.slicer.org/t/adjust-segmentation-transparency-of-orthoslices-and-volumes-independently-for-better-contrast-in-3d-view/44653 "2025-10-04T20:32:31Z")

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When you select the “eye” to show an orthogonal slice in the 3D view, in the 3d viewer, it would nice if the segmentations could be shown as solid colors and the 3D segment volume could be translucent. This would give a…

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## [Codex ai coding implementation?](https://discourse.slicer.org/t/codex-ai-coding-implementation/44527)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 0\
**Last updated:** [September 19, 2025, 1:56am UTC](https://discourse.slicer.org/t/codex-ai-coding-implementation/44527 "2025-09-19T01:56:10Z")

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been working on creating a personalized web app these days . personally i have zero coding skill or desire to learn coding . what i did is open Visual studio code . it has integrated chat GPT codex module . which can int…

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## [Segmentation clipping on the toolbar](https://discourse.slicer.org/t/segmentation-clipping-on-the-toolbar/44068)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 0\
**Last updated:** [August 13, 2025, 3:00pm UTC](https://discourse.slicer.org/t/segmentation-clipping-on-the-toolbar/44068 "2025-08-13T15:00:34Z")

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i think that segmentation clipping on the toolbar, its amazing feature that discovered by mistake . it shoulde accessoible for one toggling . a plus would be allowing a cusomt plane clipping.

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## [SlicerPreview: python default encoding is troublesome. Is it generally observed?](https://discourse.slicer.org/t/slicerpreview-python-default-encoding-is-troublesome-is-it-generally-observed/43826)

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**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 0\
**Last updated:** [July 23, 2025, 3:38pm UTC](https://discourse.slicer.org/t/slicerpreview-python-default-encoding-is-troublesome-is-it-generally-observed/43826 "2025-07-23T15:38:51Z")

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Hello, On starting SlicerPreview 33801 on Arch Linux, a very long list of decoding errors related to python appears in stdout. The last ones are as below: File "/opt/programs/Test/Slicer-5.9.0-2025-07-22-linux-amd64/…

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## [Build a Talairach grid](https://discourse.slicer.org/t/build-a-talairach-grid/17332)

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**Author:** [@matthieufaillot](https://discourse.slicer.org/u/matthieufaillot)\
**Replies:** 10\
**Last updated:** [July 11, 2025, 7:41am UTC](https://discourse.slicer.org/t/build-a-talairach-grid/17332 "2025-07-11T07:41:52Z")

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Operating system: Windows 10 Slicer version: 4.10.2 Expected behavior: overlay a Talairach grid system over a CT/MRI 3D volume Actual behavior: none Hello, I would like to create a talairach grid model such as perf…

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## [W: ContourData (3006,0050) violates maximum VR length in ContourSequence](https://discourse.slicer.org/t/w-contourdata-3006-0050-violates-maximum-vr-length-in-contoursequence/43565)

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**Author:** [@ferhue](https://discourse.slicer.org/u/ferhue)\
**Replies:** 2\
**Last updated:** [July 3, 2025, 5:47am UTC](https://discourse.slicer.org/t/w-contourdata-3006-0050-violates-maximum-vr-length-in-contoursequence/43565 "2025-07-03T05:47:39Z")

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Hello, When loading in Slicer, I get the following warning printed many times: W: ContourData (3006,0050) violates maximum VR length in ContourSequence I do not fully understand this, since the largest sequence contai…

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## [Request to add the function of importing PerkinElmer's .vox format data](https://discourse.slicer.org/t/request-to-add-the-function-of-importing-perkinelmers-vox-format-data/42625)

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**Author:** [@ggg](https://discourse.slicer.org/u/ggg)\
**Replies:** 8\
**Last updated:** [June 19, 2025, 2:44pm UTC](https://discourse.slicer.org/t/request-to-add-the-function-of-importing-perkinelmers-vox-format-data/42625 "2025-06-19T14:44:04Z")

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Hello everyone, my English level is not high, so many contents are translated by software, please forgive me if there are mistakes. I am currently using Bruker’s CTAn software to analyze data. Since I need to contact an…

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## [AddNewNodeByClass: basename does not increment](https://discourse.slicer.org/t/addnewnodebyclass-basename-does-not-increment/34386)

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**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 3\
**Last updated:** [May 27, 2025, 11:52am UTC](https://discourse.slicer.org/t/addnewnodebyclass-basename-does-not-increment/34386 "2025-05-27T11:52:01Z")

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Hi, From my understanding, AddNewNodeByClass accepts a basename that would increment with a suffix on repeat calls. For example: slicer.mrmlScene.AddNewNodeByClass("vtkMRMLModelNode", "M") should yield model nodes wit…

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## [Make it possible to pan in Flood Fill](https://discourse.slicer.org/t/make-it-possible-to-pan-in-flood-fill/43017)

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**Author:** [@Fishguy](https://discourse.slicer.org/u/Fishguy)\
**Replies:** 0\
**Last updated:** [May 21, 2025, 4:58am UTC](https://discourse.slicer.org/t/make-it-possible-to-pan-in-flood-fill/43017 "2025-05-21T04:58:19Z")

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I still use flood fill as a segmentation tool. it seems that the ability to pan by holding down the shift key is not enabled. Clicking on a slice with the shift down elicits the flood fill rather than allowing me to shi…

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## [PyTomography Extension](https://discourse.slicer.org/t/pytomography-extension/41951)

<div class="topic-metadata">

**Author:** [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Replies:** 6\
**Last updated:** [May 18, 2025, 2:28pm UTC](https://discourse.slicer.org/t/pytomography-extension/41951 "2025-05-18T14:28:22Z")

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Dear expert, There is no PyTomography Extension in 3D Slicer version 5.8.1. Please help me add it. Thank you.

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## [FYI: Extensions are being built for Mac only for SlicerStable](https://discourse.slicer.org/t/fyi-extensions-are-being-built-for-mac-only-for-slicerstable/42983)

<div class="topic-metadata">

**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 0\
**Last updated:** [May 17, 2025, 6:45pm UTC](https://discourse.slicer.org/t/fyi-extensions-are-being-built-for-mac-only-for-slicerstable/42983 "2025-05-17T18:45:47Z")

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Since a few weeks, extensions were not being built for Linux (SlicerStable). Since today, they are built for Mac only. Moreover, for SlicerVMTK in particular, the build fails seemingly due to corrupt files retrieved fro…

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## [Revisiting stereoscopic/anaglyph 3D slicer output](https://discourse.slicer.org/t/revisiting-stereoscopic-anaglyph-3d-slicer-output/42879)

<div class="topic-metadata">

**Author:** [@Mark\_Ryan](https://discourse.slicer.org/u/Mark_Ryan)\
**Replies:** 0\
**Last updated:** [May 11, 2025, 8:09pm UTC](https://discourse.slicer.org/t/revisiting-stereoscopic-anaglyph-3d-slicer-output/42879 "2025-05-11T20:09:38Z")

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I know that 3D glasses are no longer widely used, but there are several newer glasses-free displays that have recently been released that would make good use of those extensions if there was a way to update them for newe…

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## [Add a keyboard shortcut to close the application](https://discourse.slicer.org/t/add-a-keyboard-shortcut-to-close-the-application/42615)

<div class="topic-metadata">

**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 4\
**Last updated:** [April 19, 2025, 6:24pm UTC](https://discourse.slicer.org/t/add-a-keyboard-shortcut-to-close-the-application/42615 "2025-04-19T18:24:32Z")

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Many applications can be closed by the “CTRL + Q” keyboard shortcut. This combination does not seem to be used in Slicer. I am aware that custom keyboard shortcuts can be assigned, just wondering if it could be built-in. …

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## [Locking a segment for edits](https://discourse.slicer.org/t/locking-a-segment-for-edits/35156)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 10\
**Last updated:** [March 19, 2025, 6:57pm UTC](https://discourse.slicer.org/t/locking-a-segment-for-edits/35156 "2025-03-19T18:57:37Z")

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Would it be possible to implement a function that will lock a segment for further edits (regardless whether it is set to visible or not, and overriding all other editable area settings)? Sometimes I overlook my editable…

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## [Calculating Sharpness of a point](https://discourse.slicer.org/t/calculating-sharpness-of-a-point/42097)

<div class="topic-metadata">

**Author:** [@evergarden](https://discourse.slicer.org/u/evergarden)\
**Replies:** 0\
**Last updated:** [March 12, 2025, 8:14pm UTC](https://discourse.slicer.org/t/calculating-sharpness-of-a-point/42097 "2025-03-12T20:14:28Z")

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Hello all! We were measuring some of the morphometrics of a stingray barb, something that we wanted to find was the sharpness of the tip of the barb, is there any module or plug in to help with this? Considering writing…

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## [Extension Catalogue search improvements](https://discourse.slicer.org/t/extension-catalogue-search-improvements/42046)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [March 10, 2025, 5:51am UTC](https://discourse.slicer.org/t/extension-catalogue-search-improvements/42046 "2025-03-10T05:51:16Z")

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During the discussions of a new extension, it become clear that extension catalogue naming conventions are too restrictive. For example, an extension name cannot have spaces, since the label name is also used for project…

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