# Latest

**URL:** https://discourse.slicer.org/latest.md?page=45

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

**Page:** 46

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## [WebAssembly version](https://discourse.slicer.org/t/webassembly-version/43997)

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**Author:** [@Taron\_Holikyan](https://discourse.slicer.org/u/Taron_Holikyan)\
**Replies:** 1\
**Last updated:** [August 7, 2025, 12:37pm UTC](https://discourse.slicer.org/t/webassembly-version/43997 "2025-08-07T12:37:53Z")

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Hi, I want to know if this library has a WebAssembly version that works with Three.js. If not, would I need to create it myself? And if a WebAssembly version doesn’t exist, how difficult would it be to make one?

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## [Help Needed – Integrating Brodmann Area Overlay & MNI Space Registration Module into Custom Application](https://discourse.slicer.org/t/help-needed-integrating-brodmann-area-overlay-mni-space-registration-module-into-custom-application/44001)

<div class="topic-metadata">

**Author:** [@salim](https://discourse.slicer.org/u/salim)\
**Replies:** 0\
**Last updated:** [August 7, 2025, 12:36pm UTC](https://discourse.slicer.org/t/help-needed-integrating-brodmann-area-overlay-mni-space-registration-module-into-custom-application/44001 "2025-08-07T12:36:52Z")

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Hi Dear Community, I have developed a module in 3D Slicer for Brodmann Area overlay and MNI space registration. The module builds successfully, but I’m facing an issue integrating it into my custom Slicer-based applicat…

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## [Adding nodes to qMRMLSubjectHierarchyTreeView](https://discourse.slicer.org/t/adding-nodes-to-qmrmlsubjecthierarchytreeview/43999)

<div class="topic-metadata">

**Author:** [@Victor\_Wayne](https://discourse.slicer.org/u/Victor_Wayne)\
**Replies:** 0\
**Last updated:** [August 7, 2025, 12:36pm UTC](https://discourse.slicer.org/t/adding-nodes-to-qmrmlsubjecthierarchytreeview/43999 "2025-08-07T12:36:13Z")

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Hello, In my custom widget, I have added an empty qMRMLSubjectHierarchyTreeView. I have a class that tracks nodes of a plans. I just need to show those node inside the qMRMLSubjectHierarchyTreeView so that I can get the…

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## [Adding nodes in qMRMLSubjectHierarchyTreeView](https://discourse.slicer.org/t/adding-nodes-in-qmrmlsubjecthierarchytreeview/43993)

<div class="topic-metadata">

**Author:** [@Victor\_Wayne](https://discourse.slicer.org/u/Victor_Wayne)\
**Replies:** 1\
**Last updated:** [August 7, 2025, 12:28pm UTC](https://discourse.slicer.org/t/adding-nodes-in-qmrmlsubjecthierarchytreeview/43993 "2025-08-07T12:28:23Z")

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Hello, I am tracking some line nodes of type \`vtkMRMLMarkupsLineNode\` in a class called Plan for specific plan created by the user. How can I add those lines to the qMRMLSubjectHierarchyTreeView that I created in my cu…

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## [How to add folder in scene?](https://discourse.slicer.org/t/how-to-add-folder-in-scene/29499)

<div class="topic-metadata">

**Author:** [@dsa934](https://discourse.slicer.org/u/dsa934)\
**Replies:** 15\
**Last updated:** [August 7, 2025, 12:26pm UTC](https://discourse.slicer.org/t/how-to-add-folder-in-scene/29499 "2025-08-07T12:26:54Z")

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Operating system: window 10 Slicer version: 5.2.1 how can i do this in python code ? I want to know how to add a folder in the scene and add data to that folder. Or can I add a folder that I already have locally t…

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## [Add all nodes to custom module gui](https://discourse.slicer.org/t/add-all-nodes-to-custom-module-gui/24660)

<div class="topic-metadata">

**Author:** [@rhodesdante](https://discourse.slicer.org/u/rhodesdante)\
**Replies:** 3\
**Last updated:** [August 7, 2025, 7:41am UTC](https://discourse.slicer.org/t/add-all-nodes-to-custom-module-gui/24660 "2025-08-07T07:41:19Z")

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I would like to enable the user of a custom python module to look at all the volume nodes at once, rather than selecting them using a qMRMLComboBox to select them individually. In addition, I would like to allow them to …

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## [Renaming Segments forces color selection as well](https://discourse.slicer.org/t/renaming-segments-forces-color-selection-as-well/43970)

<div class="topic-metadata">

**Author:** [@tsehrhardt](https://discourse.slicer.org/u/tsehrhardt)\
**Replies:** 9\
**Last updated:** [August 6, 2025, 2:41pm UTC](https://discourse.slicer.org/t/renaming-segments-forces-color-selection-as-well/43970 "2025-08-06T14:41:08Z")

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I used to be able to double-click a segment name in Segment Editor to change ONLY the name. Now when double-clicking, the box to change color and name both pop up, but requires me to select a color as well or else it wil…

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## [MRI-CT Spine Registration Data](https://discourse.slicer.org/t/mri-ct-spine-registration-data/43985)

<div class="topic-metadata">

**Author:** [@elisedl1](https://discourse.slicer.org/u/elisedl1)\
**Replies:** 0\
**Last updated:** [August 6, 2025, 2:05pm UTC](https://discourse.slicer.org/t/mri-ct-spine-registration-data/43985 "2025-08-06T14:05:23Z")

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Hi all, It seems as though the SpineWeb Dataset is no longer accessible via its online link (http://spineweb.cigitalimaginggroup.ca/spineweb/index.php?n=Main.Datasets). Would anyone know of any other MRI-CT spine data …

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## [Method on how to remove black background from Brain MRI images](https://discourse.slicer.org/t/method-on-how-to-remove-black-background-from-brain-mri-images/31459)

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**Author:** [@Alvi\_Rahman](https://discourse.slicer.org/u/Alvi_Rahman)\
**Replies:** 1\
**Last updated:** [August 6, 2025, 6:22am UTC](https://discourse.slicer.org/t/method-on-how-to-remove-black-background-from-brain-mri-images/31459 "2025-08-06T06:22:11Z")

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My aim is to remove the black ground from each brain MRI slice. I want to achieve this using Python. I have given my code below: import os import numpy as np import SimpleITK as sitk from PIL import Image from skimage.…

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## [QLineEdit in extension UI: Cursor jumping to end of line (bug?)](https://discourse.slicer.org/t/qlineedit-in-extension-ui-cursor-jumping-to-end-of-line-bug/43954)

<div class="topic-metadata">

**Author:** [@shai-ikko](https://discourse.slicer.org/u/shai-ikko)\
**Replies:** 6\
**Last updated:** [August 5, 2025, 4:42pm UTC](https://discourse.slicer.org/t/qlineedit-in-extension-ui-cursor-jumping-to-end-of-line-bug/43954 "2025-08-05T16:42:50Z")

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Hi, I’ve been writing some Slicer extensions using the Extension Wizard & Qt Designer, and it’s been mostly working very well. But I’m seeing a funny behavior, which I think is a bug. I have extensions which use simple…

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## [Segmenting arteries and pelvic bone in pelvic CT](https://discourse.slicer.org/t/segmenting-arteries-and-pelvic-bone-in-pelvic-ct/43975)

<div class="topic-metadata">

**Author:** [@Alanlau434](https://discourse.slicer.org/u/Alanlau434)\
**Replies:** 0\
**Last updated:** [August 5, 2025, 3:40pm UTC](https://discourse.slicer.org/t/segmenting-arteries-and-pelvic-bone-in-pelvic-ct/43975 "2025-08-05T15:40:50Z")

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Hello guys, I’m a novice to 3D slicer, doing a project on pelvic exenteration and I need to isolate pelvic arteries and bones (inc lumbar spine). Is there a way to segment and put the two together on the same 3D plane? T…

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## [I am unable to use 3D slicer through leaddbs](https://discourse.slicer.org/t/i-am-unable-to-use-3d-slicer-through-leaddbs/43974)

<div class="topic-metadata">

**Author:** [@Reem](https://discourse.slicer.org/u/Reem)\
**Replies:** 0\
**Last updated:** [August 5, 2025, 3:40pm UTC](https://discourse.slicer.org/t/i-am-unable-to-use-3d-slicer-through-leaddbs/43974 "2025-08-05T15:40:47Z")

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Hello, I am trying to view images from leaddbs software through 3D slicer, but I am getting an error that the slicer path is not defined in Matlab. Can you please advise on how to set the path for slicer in leaddbs throu…

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## [CMake Error during PlusLib SuperBuild: "The source does not match..."](https://discourse.slicer.org/t/cmake-error-during-pluslib-superbuild-the-source-does-not-match/43972)

<div class="topic-metadata">

**Author:** [@Jaeseong](https://discourse.slicer.org/u/Jaeseong)\
**Replies:** 0\
**Last updated:** [August 5, 2025, 3:40pm UTC](https://discourse.slicer.org/t/cmake-error-during-pluslib-superbuild-the-source-does-not-match/43972 "2025-08-05T15:40:36Z")

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Hi everyone, I’m encountering an error during the building of Pluslib, which is a dependency for Slicer on Ubuntu. My goal is to acquire ultrasound images from a Windows machine using the PLUS server. I followed the in…

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## [Scissors Not Working](https://discourse.slicer.org/t/scissors-not-working/21835)

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**Author:** [@Sandy1](https://discourse.slicer.org/u/Sandy1)\
**Replies:** 14\
**Last updated:** [August 5, 2025, 2:39pm UTC](https://discourse.slicer.org/t/scissors-not-working/21835 "2025-08-05T14:39:47Z")

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I am in the segment editor, and I am attempting to remove jewelry and bone from my image. I have selected the erase inside option. Nothing happens once I’ve circled the areas with the scissors that I want to remove. Plea…

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## [hi i want i small CT Knee scan file for 3d slicer and i couldn t find one ](https://discourse.slicer.org/t/hi-i-want-i-small-ct-knee-scan-file-for-3d-slicer-and-i-couldn-t-find-one/43763)

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**Author:** [@wsymjlal781](https://discourse.slicer.org/u/wsymjlal781)\
**Replies:** 2\
**Last updated:** [August 5, 2025, 1:32pm UTC](https://discourse.slicer.org/t/hi-i-want-i-small-ct-knee-scan-file-for-3d-slicer-and-i-couldn-t-find-one/43763 "2025-08-05T13:32:27Z")

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hi i want i small CT Knee scan file for 3d slicer and i couldn t find one

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## [DVH variations after Deformable Registration](https://discourse.slicer.org/t/dvh-variations-after-deformable-registration/43936)

<div class="topic-metadata">

**Author:** [@azam](https://discourse.slicer.org/u/azam)\
**Replies:** 3\
**Last updated:** [August 5, 2025, 11:39am UTC](https://discourse.slicer.org/t/dvh-variations-after-deformable-registration/43936 "2025-08-05T11:39:57Z")

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Hi everyone, I would like to register two DICOM CT images (CT FB, CT DIBH) that I exported from the treatment planning system, and then apply the resulting transformation matrix to the DICOM RT dose and RT structure dat…

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## [AttributeError: 'vtkSlicerMarkupsModuleMRMLPython.vtkMRMLMarkupsClo' object has no attribute 'GetImageData'](https://discourse.slicer.org/t/attributeerror-vtkslicermarkupsmodulemrmlpython-vtkmrmlmarkupsclo-object-has-no-attribute-getimagedata/43890)

<div class="topic-metadata">

**Author:** [@Gruoss](https://discourse.slicer.org/u/Gruoss)\
**Replies:** 3\
**Last updated:** [August 5, 2025, 11:32am UTC](https://discourse.slicer.org/t/attributeerror-vtkslicermarkupsmodulemrmlpython-vtkmrmlmarkupsclo-object-has-no-attribute-getimagedata/43890 "2025-08-05T11:32:10Z")

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Hi, I’m new to Slicer (version 5.8.1 on Windows 11 Pro) and would like to calculate radiomics features from native 2D DICOM images. I’m trying this code in the Python-Slicer terminal: import slicer import numpy as np …

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## [Combining registered volumes from different perspectives for improved resolution](https://discourse.slicer.org/t/combining-registered-volumes-from-different-perspectives-for-improved-resolution/43960)

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**Author:** [@sulli419](https://discourse.slicer.org/u/sulli419)\
**Replies:** 2\
**Last updated:** [August 4, 2025, 11:01pm UTC](https://discourse.slicer.org/t/combining-registered-volumes-from-different-perspectives-for-improved-resolution/43960 "2025-08-04T23:01:35Z")

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Say I have two MR volumes of the same brain; one coronal and one sagittal. The axial z resolution is ~5x poorer volume. I imagine there must be some way (after registering the volumes) to create a new “average” volume …

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## [Clipping a model via scripting](https://discourse.slicer.org/t/clipping-a-model-via-scripting/43963)

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**Author:** [@chz31](https://discourse.slicer.org/u/chz31)\
**Replies:** 0\
**Last updated:** [August 4, 2025, 10:19pm UTC](https://discourse.slicer.org/t/clipping-a-model-via-scripting/43963 "2025-08-04T22:19:56Z")

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Hi all, I am trying to clipping a model via scripting: if not clipModelsNode: clipModelsNode = slicer.mrmlScene.AddNewNodeByClass( 'vtkMRMLClipModelsNode', 'ClipModels') # Get model node to clip modelNode …

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## [2025.07.29 Weekly Meeting](https://discourse.slicer.org/t/2025-07-29-weekly-meeting/43883)

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**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 2\
**Last updated:** [August 4, 2025, 7:58pm UTC](https://discourse.slicer.org/t/2025-07-29-weekly-meeting/43883 "2025-08-04T19:58:15Z")

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Later this morning, 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 …

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## [Synchronization of Axial, Coronal, and Sagittal slices by clicking on a pixel from one of the views](https://discourse.slicer.org/t/synchronization-of-axial-coronal-and-sagittal-slices-by-clicking-on-a-pixel-from-one-of-the-views/43943)

<div class="topic-metadata">

**Author:** [@shahrokh](https://discourse.slicer.org/u/shahrokh)\
**Replies:** 1\
**Last updated:** [August 4, 2025, 6:24pm UTC](https://discourse.slicer.org/t/synchronization-of-axial-coronal-and-sagittal-slices-by-clicking-on-a-pixel-from-one-of-the-views/43943 "2025-08-04T18:24:40Z")

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Hello Dear Developers and Users To draw ROI, it is needed that three views axial, coronal, and sagittal be synchronize together. This means, for example, by clicking on one certain pixel in sagittal slice, the slices sh…

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## [Threshold segmentation not captures the areas I intended](https://discourse.slicer.org/t/threshold-segmentation-not-captures-the-areas-i-intended/43921)

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**Author:** [@mina.dehghan](https://discourse.slicer.org/u/mina.dehghan)\
**Replies:** 1\
**Last updated:** [August 4, 2025, 3:04pm UTC](https://discourse.slicer.org/t/threshold-segmentation-not-captures-the-areas-i-intended/43921 "2025-08-04T15:04:50Z")

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Hello, I have a cubic shape of Al and Zn (High difference in density). Within the cubic there are some voids that I’m not able to capture them using the threshold segmentation for volume measurements. Is there a way I c…

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## [How to export centerline generated by the VMTK?](https://discourse.slicer.org/t/how-to-export-centerline-generated-by-the-vmtk/22735)

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**Author:** [@canadan](https://discourse.slicer.org/u/canadan)\
**Replies:** 6\
**Last updated:** [August 4, 2025, 12:48pm UTC](https://discourse.slicer.org/t/how-to-export-centerline-generated-by-the-vmtk/22735 "2025-08-04T12:48:54Z")

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Operating system: Linux Slicer version:4.11.20210226 r29738 / 7a593c8 Expected behavior: Actual behavior: Following a recent online tutorial, I was able to generate a centerline of a segemented aorta. I would like to…

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## [Saving and reloading ultrasound images segmentation in NIFTI format](https://discourse.slicer.org/t/saving-and-reloading-ultrasound-images-segmentation-in-nifti-format/43947)

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**Author:** [@Jesus\_Benito\_Ruiz](https://discourse.slicer.org/u/Jesus_Benito_Ruiz)\
**Replies:** 0\
**Last updated:** [August 3, 2025, 9:35pm UTC](https://discourse.slicer.org/t/saving-and-reloading-ultrasound-images-segmentation-in-nifti-format/43947 "2025-08-03T21:35:10Z")

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Hello I am trying to work with some echographics images. I use the draw tool to show the interest area, I export as new labelmap and saving the segmentation file as whatever\_seg.nii.gz. However if I open that file, I do…

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## [Help needed for segmenting an atrophic maxilla in 3D Slicer (for 3D printing)](https://discourse.slicer.org/t/help-needed-for-segmenting-an-atrophic-maxilla-in-3d-slicer-for-3d-printing/43922)

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**Author:** [@piero\_perez](https://discourse.slicer.org/u/piero_perez)\
**Replies:** 1\
**Last updated:** [August 3, 2025, 7:26pm UTC](https://discourse.slicer.org/t/help-needed-for-segmenting-an-atrophic-maxilla-in-3d-slicer-for-3d-printing/43922 "2025-08-03T19:26:48Z")

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I’m a dental student currently learning how to use 3D Slicer. My father, who is an implantologist, asked me to 3D print an atrophic maxilla based on a CT scan. I’m using the Segment Editor module. I’ve already tried ap…

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## [SlicerSALT crashes when loading data](https://discourse.slicer.org/t/slicersalt-crashes-when-loading-data/43686)

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**Author:** [@Chihiro\_Suzuki](https://discourse.slicer.org/u/Chihiro_Suzuki)\
**Replies:** 4\
**Last updated:** [August 3, 2025, 2:42pm UTC](https://discourse.slicer.org/t/slicersalt-crashes-when-loading-data/43686 "2025-08-03T14:42:55Z")

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Dear Slicer community, I am currently planning to use SHPARM to compare the morphology of mammalian paranasal sinuses. To prepare for this, I have been independently studying both SlicerSALT and the SHPARM methodology. …

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## [Dashes silently removed from filename in "export to file" operation](https://discourse.slicer.org/t/dashes-silently-removed-from-filename-in-export-to-file-operation/43923)

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**Author:** [@flomei](https://discourse.slicer.org/u/flomei)\
**Replies:** 6\
**Last updated:** [August 1, 2025, 9:09pm UTC](https://discourse.slicer.org/t/dashes-silently-removed-from-filename-in-export-to-file-operation/43923 "2025-08-01T21:09:28Z")

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Hi, I’m using Slicer (v5.8.1) for manual annotation of structural MRI nifti data (T1 + parcellations). I’m loading T1 volume and freesurfer parcellations (both .nii.gz) via a selfmade startup script, but use the GUI fo…

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## [How to install OpenCv in stable Slicer 5.8.1?](https://discourse.slicer.org/t/how-to-install-opencv-in-stable-slicer-5-8-1/43928)

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**Author:** [@apparrilla](https://discourse.slicer.org/u/apparrilla)\
**Replies:** 0\
**Last updated:** [August 1, 2025, 2:37pm UTC](https://discourse.slicer.org/t/how-to-install-opencv-in-stable-slicer-5-8-1/43928 "2025-08-01T14:37:29Z")

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Hi everyone! I´m trying to install SlicerOpenCV in new stable release but it is not longer available. I´ve tryed “slicer.util.pip\_install(“opencv-python”)” and “slicer.util.pip\_install(“opencv-contrib-python”)“ but I c…

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## [Unexpected behaviour with torch.jit.load](https://discourse.slicer.org/t/unexpected-behaviour-with-torch-jit-load/42685)

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**Author:** [@ciro.raggio](https://discourse.slicer.org/u/ciro.raggio)\
**Replies:** 2\
**Last updated:** [July 31, 2025, 9:38am UTC](https://discourse.slicer.org/t/unexpected-behaviour-with-torch-jit-load/42685 "2025-07-31T09:38:43Z")

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Hi everyone! I’m trying to use a custom pre-trained torch model in a scripted module, but I encountered a problem that I couldn’t fix. Following the guide “Deploying your MONAI machine learning model within 3D Slicer”, …

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## [Work the same data set on two computers](https://discourse.slicer.org/t/work-the-same-data-set-on-two-computers/43863)

<div class="topic-metadata">

**Author:** [@JaredAmudeo](https://discourse.slicer.org/u/JaredAmudeo)\
**Replies:** 5\
**Last updated:** [July 30, 2025, 5:39pm UTC](https://discourse.slicer.org/t/work-the-same-data-set-on-two-computers/43863 "2025-07-30T17:39:11Z")

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Is it possible to work with the same dataset, e.g., a stack of images, on different computers? Considering both, use Grown from Seed to optimize time. For example, a microtomography of a rodent skull fossil. Is it possib…

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