# Top

**URL:** https://discourse.slicer.org/top.md?page=11

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

**Page:** 12

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## [Is it possible to use Slicer to directly edit a 3D voxel volume?](https://discourse.slicer.org/t/is-it-possible-to-use-slicer-to-directly-edit-a-3d-voxel-volume/46859)

<div class="topic-metadata">

**Author:** [@PetrKryslUCSD](https://discourse.slicer.org/u/PetrKryslUCSD)\
**Replies:** 1\
**Last updated:** [April 28, 2026, 4:06pm UTC](https://discourse.slicer.org/t/is-it-possible-to-use-slicer-to-directly-edit-a-3d-voxel-volume/46859 "2026-04-28T16:06:24Z")

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Has this been already solved or at least discussed? Such as inserting “voxelized” primitives (sphere, cylinder, block, …) and combining them in various ways (boolean ops?).

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## [how to edit an obj file ](https://discourse.slicer.org/t/how-to-edit-an-obj-file/46869)

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**Author:** [@ellenku](https://discourse.slicer.org/u/ellenku)\
**Replies:** 2\
**Last updated:** [April 30, 2026, 10:24am UTC](https://discourse.slicer.org/t/how-to-edit-an-obj-file/46869 "2026-04-30T10:24:37Z")

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Hello! I have a bunch of cranial endocast saved in obj form. I want to try to section of the cerebellum region, and I think this should be possible in maybe segment editor. However, since the obj is mesh model, i cannot…

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## [Problem boolean operations to make fibula surgical guide](https://discourse.slicer.org/t/problem-boolean-operations-to-make-fibula-surgical-guide/46713)

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**Author:** [@Marco\_Sarcinella](https://discourse.slicer.org/u/Marco_Sarcinella)\
**Replies:** 2\
**Last updated:** [April 11, 2026, 5:51pm UTC](https://discourse.slicer.org/t/problem-boolean-operations-to-make-fibula-surgical-guide/46713 "2026-04-11T17:51:44Z")

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Hello! Hello! I would like to solve a problem with you. Often, after pressing the “make boolean operations to surgical guide base” button, an alert appears saying: ERROR: Boolean operations to make fibula surgical gu…

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## [IST School 2027 (Valparaíso, Chile, Jan 18–22): hands-on tractography workshop, registration open](https://discourse.slicer.org/t/ist-school-2027-valparaiso-chile-jan-18-22-hands-on-tractography-workshop-registration-open/48743)

<div class="topic-metadata">

**Author:** [@Graham\_Little](https://discourse.slicer.org/u/Graham_Little)\
**Replies:** 0\
**Last updated:** [November 6, 2026, 1:56am UTC](https://discourse.slicer.org/t/ist-school-2027-valparaiso-chile-jan-18-22-hands-on-tractography-workshop-registration-open/48743 "2026-11-06T01:56:38Z")

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Dear colleagues, Registration is now open for the IST School - Valparaíso 2027, a five-day hands-on tractography workshop run by the International Society for Tractography. Last year’s School filled quickly, so we encou…

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## [Obscuring Bone Removal for 3D Viz of Cardiac CTA](https://discourse.slicer.org/t/obscuring-bone-removal-for-3d-viz-of-cardiac-cta/47095)

<div class="topic-metadata">

**Author:** [@Deep\_Learning](https://discourse.slicer.org/u/Deep_Learning)\
**Replies:** 1\
**Last updated:** [May 26, 2026, 11:46am UTC](https://discourse.slicer.org/t/obscuring-bone-removal-for-3d-viz-of-cardiac-cta/47095 "2026-05-26T11:46:08Z")

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Basically trying to automatically mask the spine and ribs. Or Mask everything but the spine and ribs. Thresholding is not good. Need to retain all heart calcium and blood.. TotalSegmentator does not completely segment …

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## [Volume Property json file is incorrectly saved](https://discourse.slicer.org/t/volume-property-json-file-is-incorrectly-saved/46834)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [April 27, 2026, 10:07pm UTC](https://discourse.slicer.org/t/volume-property-json-file-is-incorrectly-saved/46834 "2026-04-27T22:07:15Z")

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I Load a 16bit unsigned dataset, set up its volume rendering properties such as Use shift slider Change the material preset to a non-default one (the second brightest) Remove some points from the scalar mapping and shi…

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## [Breast PET/CT segmentation](https://discourse.slicer.org/t/breast-pet-ct-segmentation/46116)

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**Author:** [@Issa\_Abusaleh](https://discourse.slicer.org/u/Issa_Abusaleh)\
**Replies:** 1\
**Last updated:** [February 10, 2026, 9:16pm UTC](https://discourse.slicer.org/t/breast-pet-ct-segmentation/46116 "2026-02-10T21:16:38Z")

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I am writing to kindly request your guidance and support in learning segmentation techniques step by step, as I am currently working on a research project entitled: “PET/CT Predicting Treatment Response of Breast Cancer…

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## [Configure qMRMLSubjectHierarchyTreeView?](https://discourse.slicer.org/t/configure-qmrmlsubjecthierarchytreeview/45241)

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**Author:** [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Replies:** 1\
**Last updated:** [December 1, 2025, 9:42am UTC](https://discourse.slicer.org/t/configure-qmrmlsubjecthierarchytreeview/45241 "2025-12-01T09:42:43Z")

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Hi, Is it possible to hide all empty folders and markupNodes with no control points from a qMRMLSubjectHierarchyTreeView ? Thank you

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## [Can not use volume rendering for MRI data, shows only one slice](https://discourse.slicer.org/t/can-not-use-volume-rendering-for-mri-data-shows-only-one-slice/45271)

<div class="topic-metadata">

**Author:** [@Felix\_Jannan](https://discourse.slicer.org/u/Felix_Jannan)\
**Replies:** 1\
**Last updated:** [November 29, 2025, 7:31pm UTC](https://discourse.slicer.org/t/can-not-use-volume-rendering-for-mri-data-shows-only-one-slice/45271 "2025-11-29T19:31:36Z")

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Hello, I am quite new to the topic of 3D-reconstruction and imaging but I am trying to learn it for my scientific work. I recently ran into a problem with MRI data, I usually use the program for 3D Models with CT data, …

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## [2025.12.09 Weekly Meeting](https://discourse.slicer.org/t/2025-12-09-weekly-meeting/45408)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 2\
**Last updated:** [December 9, 2025, 5:24pm UTC](https://discourse.slicer.org/t/2025-12-09-weekly-meeting/45408 "2025-12-09T17:24:03Z")

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Tomorrow, we will be having our next weekly hangout at 11:00 AM ET until 12:00 PM ET. after the project week meetings. We will be re-using the same meeting link Anyone is welcome to join at this link: Launch Meeting - …

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## [DECA --\> any requirements on decimation of the model?](https://discourse.slicer.org/t/deca-any-requirements-on-decimation-of-the-model/46282)

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**Author:** [@MrMarkus](https://discourse.slicer.org/u/MrMarkus)\
**Replies:** 1\
**Last updated:** [February 25, 2026, 4:16pm UTC](https://discourse.slicer.org/t/deca-any-requirements-on-decimation-of-the-model/46282 "2026-02-25T16:16:46Z")

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Hi, I am wondering if there are any recommandations for decimation of the 3D model of interest. Working with CT data of mouse skull, the original 3D ply model is about 100 MB. After running “quadratic” decimation wit…

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## [2026.02.10 Weekly Meeting](https://discourse.slicer.org/t/2026-02-10-weekly-meeting/46076)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 1\
**Last updated:** [February 10, 2026, 4:35pm UTC](https://discourse.slicer.org/t/2026-02-10-weekly-meeting/46076 "2026-02-10T16:35:19Z")

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Next Tuesday, we will be having our next weekly hangout at 10:00 AM ET until 11:00 AM ET. Anyone is welcome to join at this link: https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Please post to this thread…

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## [2025.11.18 Weekly Meeting - After Project Week Meeting](https://discourse.slicer.org/t/2025-11-18-weekly-meeting-after-project-week-meeting/45088)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 1\
**Last updated:** [November 18, 2025, 8:24pm UTC](https://discourse.slicer.org/t/2025-11-18-weekly-meeting-after-project-week-meeting/45088 "2025-11-18T20:24:39Z")

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Next Tuesday, we will be having our next weekly hangout at 11:00 AM ET until 12:00 PM ET. after the project week meetings. We will be re-using the same meeting link Anyone is welcome to join at this link: Launch Meetin…

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## [Compatibility with IBM SPSS Statistics](https://discourse.slicer.org/t/compatibility-with-ibm-spss-statistics/48115)

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**Author:** [@epalthek727](https://discourse.slicer.org/u/epalthek727)\
**Replies:** 1\
**Last updated:** [September 11, 2026, 8:29am UTC](https://discourse.slicer.org/t/compatibility-with-ibm-spss-statistics/48115 "2026-09-11T08:29:54Z")

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Hello, I would like to install and use 3D Slicer and IBM SPSS Statistics on the same Windows computer. Could these programs conflict with each other or cause performance or installation issues? Are there any precautions …

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## [extensions manager website is not opening](https://discourse.slicer.org/t/extensions-manager-website-is-not-opening/47800)

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**Author:** [@enjy\_sallam](https://discourse.slicer.org/u/enjy_sallam)\
**Replies:** 1\
**Last updated:** [August 4, 2026, 3:26pm UTC](https://discourse.slicer.org/t/extensions-manager-website-is-not-opening/47800 "2026-08-04T15:26:14Z")

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extensions manager website is not opening

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## [PET/CT segmentation for Head and neck cancer ](https://discourse.slicer.org/t/pet-ct-segmentation-for-head-and-neck-cancer/46312)

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**Author:** [@Huda](https://discourse.slicer.org/u/Huda)\
**Replies:** 1\
**Last updated:** [February 26, 2026, 8:31pm UTC](https://discourse.slicer.org/t/pet-ct-segmentation-for-head-and-neck-cancer/46312 "2026-02-26T20:31:35Z")

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Hi, I would like to know which semi-automatic segmentation tools are available in 3D Slicer and could be used to segment tumours in head and neck cancer patients on PET/CT images. I am used to ‘Level Tracing’, but I co…

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## [Small screen-space "dash" appears at curve midpoint after cloning a Markups curve (Markups → Clone)](https://discourse.slicer.org/t/small-screen-space-dash-appears-at-curve-midpoint-after-cloning-a-markups-curve-markups-clone/48374)

<div class="topic-metadata">

**Author:** [@evan1](https://discourse.slicer.org/u/evan1)\
**Replies:** 1\
**Last updated:** [October 6, 2026, 9:44pm UTC](https://discourse.slicer.org/t/small-screen-space-dash-appears-at-curve-midpoint-after-cloning-a-markups-curve-markups-clone/48374 "2026-10-06T21:44:44Z")

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Environment: 3D Slicer 5.12.3, Windows 11 Summary After cloning a Markups curve via the Markups module (right-click a curve node in the list → Clone), the cloned curve displays a small horizontal line (“dash”) at (or v…

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## [2026.09.01 Weekly Meeting](https://discourse.slicer.org/t/2026-09-01-weekly-meeting/47984)

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**Author:** [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Replies:** 1\
**Last updated:** [September 1, 2026, 1:39pm UTC](https://discourse.slicer.org/t/2026-09-01-weekly-meeting/47984 "2026-09-01T13:39:55Z")

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Title: 2026.09.01 Weekly Meeting Next Tuesday, we will be having our next weekly hangout at 10:00 AM ET until 11:00 AM ET. Anyone is welcome to join at this link: Google Meet meeting 📅 Weekly Meeting · September 1, 2…

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## [Extract slice view rotations? (For applying to crop volume ROI)](https://discourse.slicer.org/t/extract-slice-view-rotations-for-applying-to-crop-volume-roi/47607)

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**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 1\
**Last updated:** [July 13, 2026, 5:01pm UTC](https://discourse.slicer.org/t/extract-slice-view-rotations-for-applying-to-crop-volume-roi/47607 "2026-07-13T17:01:21Z")

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Is there a way to extract the rotation transform of slice views rotated using ctrl-alt-left-click-and-drag? It would be super handy to be able to take that and paste it into a transform to apply to a crop volume ROI. It’…

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## [Help Non-linear Transform Error During Crop Volume / Total Segmentation](https://discourse.slicer.org/t/help-non-linear-transform-error-during-crop-volume-total-segmentation/46989)

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**Author:** [@jimenagonzalezsal](https://discourse.slicer.org/u/jimenagonzalezsal)\
**Replies:** 1\
**Last updated:** [May 11, 2026, 10:03pm UTC](https://discourse.slicer.org/t/help-non-linear-transform-error-during-crop-volume-total-segmentation/46989 "2026-05-11T22:03:02Z")

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Hi everyone!! I wanted to ask for some help. I’m trying to crop a volume and then add Total Segmentation, but whenever I try to either crop or create the segmentation from an MRI, a message appears stating: “Output volu…

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## [Can I do segmentation with rtx5060ti?](https://discourse.slicer.org/t/can-i-do-segmentation-with-rtx5060ti/46528)

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**Author:** [@leonics](https://discourse.slicer.org/u/leonics)\
**Replies:** 1\
**Last updated:** [March 24, 2026, 1:50pm UTC](https://discourse.slicer.org/t/can-i-do-segmentation-with-rtx5060ti/46528 "2026-03-24T13:50:34Z")

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I have PC Spec cpu ryzen 7950x mb : Asus proart x870e gpu : rtx 5060ti 16gb x2 palit infinity3 ram : 16gb x2 bus4800 But I can segmentation only on mu CPU Can it work with my GPU?

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## [The GUI of Slicer 5.10.0 seems to be unexpectedly scaled.](https://discourse.slicer.org/t/the-gui-of-slicer-5-10-0-seems-to-be-unexpectedly-scaled/45582)

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**Author:** [@20zzyw](https://discourse.slicer.org/u/20zzyw)\
**Replies:** 1\
**Last updated:** [December 22, 2025, 4:42pm UTC](https://discourse.slicer.org/t/the-gui-of-slicer-5-10-0-seems-to-be-unexpectedly-scaled/45582 "2025-12-22T16:42:42Z")

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Problem report for 3D Slicer 5.10.0 win-amd64: Hi! As I upgrade my Slicer from 5.8.2 to 5.10, everything on the GUI look giant, but only font could be adjusted in Application Settings. Could you please tell me is there …

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## [SlicerRT isocenter configuration](https://discourse.slicer.org/t/slicerrt-isocenter-configuration/45122)

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**Author:** [@Mafer\_Calix](https://discourse.slicer.org/u/Mafer_Calix)\
**Replies:** 1\
**Last updated:** [December 9, 2025, 12:19pm UTC](https://discourse.slicer.org/t/slicerrt-isocenter-configuration/45122 "2025-12-09T12:19:28Z")

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Hello. I need to know whether the isocenter for the slicerRT is fixed at 100 cm. Sure, in the software I can edit the isocenter position within the body and the SDD. But I need to know if the beam’s field defined in beam…

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## [Reload a python module that failed the initialize without restarting Slicer](https://discourse.slicer.org/t/reload-a-python-module-that-failed-the-initialize-without-restarting-slicer/45366)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [December 4, 2025, 5:14pm UTC](https://discourse.slicer.org/t/reload-a-python-module-that-failed-the-initialize-without-restarting-slicer/45366 "2025-12-04T17:14:47Z")

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Is there a way to reload a failed module without restarting the slicer? I can’t use the “Reload” button if the module hasn’t successfully initialized…

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## [2D slice draw/erase maps to adjacent slice in 3D instead of current](https://discourse.slicer.org/t/2d-slice-draw-erase-maps-to-adjacent-slice-in-3d-instead-of-current/47460)

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**Author:** [@falko76](https://discourse.slicer.org/u/falko76)\
**Replies:** 1\
**Last updated:** [July 2, 2026, 12:52pm UTC](https://discourse.slicer.org/t/2d-slice-draw-erase-maps-to-adjacent-slice-in-3d-instead-of-current/47460 "2026-07-02T12:52:24Z")

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CT scan, using Watershed or Grow from Seeds from SegmentEditorExtraEffects. Detecting a bone OK and clicking apply. Segment mapping is done and visually in 2d and 3d it looks fine, but erasing or drawing in 2d affects n…

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## [Fast Model Align module not working in 3D Slicer 5.10.0](https://discourse.slicer.org/t/fast-model-align-module-not-working-in-3d-slicer-5-10-0/46645)

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**Author:** [@abhijeet2410](https://discourse.slicer.org/u/abhijeet2410)\
**Replies:** 1\
**Last updated:** [April 3, 2026, 4:02am UTC](https://discourse.slicer.org/t/fast-model-align-module-not-working-in-3d-slicer-5-10-0/46645 "2026-04-03T04:02:26Z")

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Hello Team, We installed the SlicerMorph extension successfully (it shows up in Extension Manager), but the Fast Model Align module is not working properly. When we open the module, we only see the Help & Acknowledge…

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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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## [Opendose 3D cannot generate integratation of absorbed dose rate table](https://discourse.slicer.org/t/opendose-3d-cannot-generate-integratation-of-absorbed-dose-rate-table/47822)

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**Author:** [@jghtt](https://discourse.slicer.org/u/jghtt)\
**Replies:** 1\
**Last updated:** [August 21, 2026, 7:41am UTC](https://discourse.slicer.org/t/opendose-3d-cannot-generate-integratation-of-absorbed-dose-rate-table/47822 "2026-08-21T07:41:17Z")

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Hello, When I used the extension of Opendose 3D, I have got the absorbed dose rate table,but it is not valid in clicking integrate absorbed dose rate. Did anyone got same problem and how to solve it. Thanks.

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## [Clip vessel module creates non-flat cuts with ridges](https://discourse.slicer.org/t/clip-vessel-module-creates-non-flat-cuts-with-ridges/47536)

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**Author:** [@Sanjib\_Gurung](https://discourse.slicer.org/u/Sanjib_Gurung)\
**Replies:** 1\
**Last updated:** [July 7, 2026, 12:50am UTC](https://discourse.slicer.org/t/clip-vessel-module-creates-non-flat-cuts-with-ridges/47536 "2026-07-07T00:50:06Z")

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Hi, I am trying to use 3D slicer to generate 3D models for CFD. I need to create flat ends to serve as inlets and outlets. In my current model, Clip vessel module is generating non-flat ends with ridges and need help sol…

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## [Extensions for stable are not building for macos](https://discourse.slicer.org/t/extensions-for-stable-are-not-building-for-macos/45381)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 2\
**Last updated:** [December 6, 2025, 4:51am UTC](https://discourse.slicer.org/t/extensions-for-stable-are-not-building-for-macos/45381 "2025-12-06T04:51:42Z")

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No Mac extensions. Windows and Linux seems fine: @Sam\_Horvath @ebrahim

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## [2026.05.12 Weekly Meeting](https://discourse.slicer.org/t/2026-05-12-weekly-meeting/46936)

<div class="topic-metadata">

**Author:** [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Replies:** 1\
**Last updated:** [May 11, 2026, 1:33pm UTC](https://discourse.slicer.org/t/2026-05-12-weekly-meeting/46936 "2026-05-11T13:33:23Z")

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Title: 2026.05.12 Weekly Meeting Next Tuesday, we will be having our next weekly hangout at 11:00 AM ET until 12:00 PM ET. Anyone is welcome to join at this link: Launch Meeting - Zoom Agenda: Please post to this t…

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## [Model To Model Distance running as CLI](https://discourse.slicer.org/t/model-to-model-distance-running-as-cli/46971)

<div class="topic-metadata">

**Author:** [@Mrdlev](https://discourse.slicer.org/u/Mrdlev)\
**Replies:** 1\
**Last updated:** [May 11, 2026, 1:27pm UTC](https://discourse.slicer.org/t/model-to-model-distance-running-as-cli/46971 "2026-05-11T13:27:52Z")

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Hi everyone, I’m trying to use the Model-to-Model Distance extension in 3D Slicer to quantify the average displacement between two structures (one with deformation and one without). However, I’ve run into an issue: I…

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## [Assistance with Brain MR segmentation? ](https://discourse.slicer.org/t/assistance-with-brain-mr-segmentation/46361)

<div class="topic-metadata">

**Author:** [@Jack\_Karp](https://discourse.slicer.org/u/Jack_Karp)\
**Replies:** 1\
**Last updated:** [March 2, 2026, 9:17pm UTC](https://discourse.slicer.org/t/assistance-with-brain-mr-segmentation/46361 "2026-03-02T21:17:42Z")

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Hello! I am new to the slicer community. I have tried multiple attempts at segmenting out my brain, however continually fail to achieve the quality I am hoping for. I have watched multiple videos to no avail. The sulci/g…

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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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## [Bronchus segmentation loads but is not visible, while TotalSegmentator segmentation displays correctly](https://discourse.slicer.org/t/bronchus-segmentation-loads-but-is-not-visible-while-totalsegmentator-segmentation-displays-correctly/47886)

<div class="topic-metadata">

**Author:** [@Tien\_Huynh](https://discourse.slicer.org/u/Tien_Huynh)\
**Replies:** 1\
**Last updated:** [August 23, 2026, 12:54pm UTC](https://discourse.slicer.org/t/bronchus-segmentation-loads-but-is-not-visible-while-totalsegmentator-segmentation-displays-correctly/47886 "2026-08-23T12:54:38Z")

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Hello, I am trying to compare two airway segmentations in 3D Slicer: a Bronchus segmentation generated by one algorithm and an airway segmentation generated by TotalSegmentator. The TotalSegmentator segmentation loads …

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## [Next PW Prep meeting Tues Jun 9 at 10 AM ET](https://discourse.slicer.org/t/next-pw-prep-meeting-tues-jun-9-at-10-am-et/47240)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 1\
**Last updated:** [June 9, 2026, 2:11pm UTC](https://discourse.slicer.org/t/next-pw-prep-meeting-tues-jun-9-at-10-am-et/47240 "2026-06-09T14:11:53Z")

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Dear Project Week community, The next project week preparation meeting will be next Tuesday, June 9, at 10:00 AM ET. (2026-06-09T14:00:00Z (UTC)) For this meeting, we will be discussing IGT related projects and plannin…

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## [Integration of Mimics-like contouring and edit (magnet + grab) functionality into 3D Slicer for segmentation of CT Lumbar bones](https://discourse.slicer.org/t/integration-of-mimics-like-contouring-and-edit-magnet-grab-functionality-into-3d-slicer-for-segmentation-of-ct-lumbar-bones/46000)

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**Author:** [@Mirza\_Ahmad\_Awais](https://discourse.slicer.org/u/Mirza_Ahmad_Awais)\
**Replies:** 1\
**Last updated:** [January 30, 2026, 6:50pm UTC](https://discourse.slicer.org/t/integration-of-mimics-like-contouring-and-edit-magnet-grab-functionality-into-3d-slicer-for-segmentation-of-ct-lumbar-bones/46000 "2026-01-30T18:50:06Z")

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Hello! I am trying to add contouring and edit contouring functionality into 3D slicer as a replacement to mimics or mimics-like tool so we can accurately segment lumbar bodies for surgical implant design purposes. Firstl…

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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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## [My dental segmentator on the mac does not work please help](https://discourse.slicer.org/t/my-dental-segmentator-on-the-mac-does-not-work-please-help/45874)

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**Author:** [@Sankalpa\_Gamage](https://discourse.slicer.org/u/Sankalpa_Gamage)\
**Replies:** 0\
**Last updated:** [January 23, 2026, 5:34am UTC](https://discourse.slicer.org/t/my-dental-segmentator-on-the-mac-does-not-work-please-help/45874 "2026-01-23T05:34:04Z")

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\[DEBUG\]\[Qt\] 23.01.2026 10:46:32 (unknown:0) - Session start time …: 20260123\_104632 \[DEBUG\]\[Qt\] 23.01.2026 10:46:32 (unknown:0) - Slicer version …: 5.10.0 (revision 34045 / a2b6d08) macosx-amd64 - installed release \[…

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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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## [DeCAL & DeCA —\> option for selecting sample basis for reference shape](https://discourse.slicer.org/t/decal-deca-option-for-selecting-sample-basis-for-reference-shape/45075)

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**Author:** [@MrMarkus](https://discourse.slicer.org/u/MrMarkus)\
**Replies:** 2\
**Last updated:** [November 17, 2025, 3:38pm UTC](https://discourse.slicer.org/t/decal-deca-option-for-selecting-sample-basis-for-reference-shape/45075 "2025-11-17T15:38:12Z")

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Dear SlicerMorph team, would it be possible to add an additional option for the generation of the “mean shape”? For my work, probably for other users too, it would be very useful to be able to choose which shapes should…

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## [Analyzer Results in report Extended analysis (Table 2) all results are zero (0).](https://discourse.slicer.org/t/analyzer-results-in-report-extended-analysis-table-2-all-results-are-zero-0/47870)

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**Author:** [@yilinguo256](https://discourse.slicer.org/u/yilinguo256)\
**Replies:** 1\
**Last updated:** [August 15, 2026, 11:46pm UTC](https://discourse.slicer.org/t/analyzer-results-in-report-extended-analysis-table-2-all-results-are-zero-0/47870 "2026-08-15T23:46:32Z")

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@rbumm How to solve this problem? Thanks!

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## [MONAI 3DSeg - Brain Glioma segmentation error](https://discourse.slicer.org/t/monai-3dseg-brain-glioma-segmentation-error/46870)

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**Author:** [@Samim\_Zaheer](https://discourse.slicer.org/u/Samim_Zaheer)\
**Replies:** 1\
**Last updated:** [April 29, 2026, 5:09pm UTC](https://discourse.slicer.org/t/monai-3dseg-brain-glioma-segmentation-error/46870 "2026-04-29T17:09:05Z")

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Operating system: macOS Slicer version: 5.10.0 Expected behavior: Glioma Segmentation Actual behavior: RuntimeError: affine matrix of all images should be the same for channel-wise concatenation.

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## [Merging Patients in DICOM Database](https://discourse.slicer.org/t/merging-patients-in-dicom-database/46580)

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**Author:** [@Lesh3203](https://discourse.slicer.org/u/Lesh3203)\
**Replies:** 1\
**Last updated:** [March 26, 2026, 8:18pm UTC](https://discourse.slicer.org/t/merging-patients-in-dicom-database/46580 "2026-03-26T20:18:42Z")

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Is there a way to merge patients in the DICOM Database? This patient had imaging done at different facilities, and therefore has different patient IDs. As it’s all the same patient, I would love to merge them into one pa…

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## [cbct distortion](https://discourse.slicer.org/t/cbct-distortion/45493)

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**Author:** [@seda\_ozdemir](https://discourse.slicer.org/u/seda_ozdemir)\
**Replies:** 1\
**Last updated:** [December 15, 2025, 1:36pm UTC](https://discourse.slicer.org/t/cbct-distortion/45493 "2025-12-15T13:36:32Z")

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In 3D Slicer version 5.10.0, when we load a CBCT with a 24 × 19 mm FOV, distortion occurs in the sagittal and coronal slice views. How can we resolve this issue?

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## [Calculating volume of bone samples - Student Needing Assistance Using Slicer for Project](https://discourse.slicer.org/t/calculating-volume-of-bone-samples-student-needing-assistance-using-slicer-for-project/45691)

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**Author:** [@ntipton](https://discourse.slicer.org/u/ntipton)\
**Replies:** 0\
**Last updated:** [January 6, 2026, 1:06pm UTC](https://discourse.slicer.org/t/calculating-volume-of-bone-samples-student-needing-assistance-using-slicer-for-project/45691 "2026-01-06T13:06:31Z")

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Good evening, I am a student working on a research project and need assistance calculating volumes of bone samples using 3D Slicer. I have surface models (PLY files) for approximately 40 samples. Due to time constraint…

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## [Extentions cant be loaded](https://discourse.slicer.org/t/extentions-cant-be-loaded/48592)

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**Author:** [@DrAssadawy](https://discourse.slicer.org/u/DrAssadawy)\
**Replies:** 1\
**Last updated:** [October 25, 2026, 8:00am UTC](https://discourse.slicer.org/t/extentions-cant-be-loaded/48592 "2026-10-25T08:00:20Z")

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connection time out

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## [Developing a chest CT image analysis tool to detect lung airway obstruction](https://discourse.slicer.org/t/developing-a-chest-ct-image-analysis-tool-to-detect-lung-airway-obstruction/48322)

<div class="topic-metadata">

**Author:** [@pspsps](https://discourse.slicer.org/u/pspsps)\
**Replies:** 1\
**Last updated:** [September 28, 2026, 2:01pm UTC](https://discourse.slicer.org/t/developing-a-chest-ct-image-analysis-tool-to-detect-lung-airway-obstruction/48322 "2026-09-28T14:01:26Z")

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I am thinking of developing an chest CT image analysis tool to detect obstruction (narrowing) of central airways of the lung (trachea to lobar bronchii, perhaps also segmental bronchii). I will be thankful for any advice…

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## [2026.05.19 Weekly Meeting](https://discourse.slicer.org/t/2026-05-19-weekly-meeting/47000)

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**Author:** [@ebrahim](https://discourse.slicer.org/u/ebrahim)\
**Replies:** 1\
**Last updated:** [May 18, 2026, 5:20pm UTC](https://discourse.slicer.org/t/2026-05-19-weekly-meeting/47000 "2026-05-18T17:20:54Z")

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Title: 2026.05.19 Weekly Meeting Next Tuesday, we will be having our next weekly hangout at 11:00 AM ET until 12:00 PM ET. Anyone is welcome to join at this link: Launch Meeting - Zoom Agenda: Please post to this t…

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## [2026.01.13 Weekly Meeting](https://discourse.slicer.org/t/2026-01-13-weekly-meeting/45762)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 1\
**Last updated:** [January 13, 2026, 5:44pm UTC](https://discourse.slicer.org/t/2026-01-13-weekly-meeting/45762 "2026-01-13T17:44:37Z")

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Tomorrow, we will be having our next weekly hangout at 11:00 AM ET until 12:00 PM ET. after the project week meetings. We will be re-using the same meeting link Anyone is welcome to join at this link: Launch Meeting - …

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