# Support

**URL:** https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=35

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

**Page:** 36

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## [Can I export the data for multiple points at once?](https://discourse.slicer.org/t/can-i-export-the-data-for-multiple-points-at-once/42189)

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**Author:** [@MIZ](https://discourse.slicer.org/u/MIZ)\
**Replies:** 8\
**Last updated:** [July 2, 2025, 1:13am UTC](https://discourse.slicer.org/t/can-i-export-the-data-for-multiple-points-at-once/42189 "2025-07-02T01:13:35Z")

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I am landmarking approximately 44 points in a mesh. Exporting the x,y,z coordinates into an .fcsv file is extremely laborious. Is there any way to export the data for all 44 points simultaneously? Also, it would be great…

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## [Help integrating vtkU3DExporter module in Slicer](https://discourse.slicer.org/t/help-integrating-vtku3dexporter-module-in-slicer/43540)

<div class="topic-metadata">

**Author:** [@alientex](https://discourse.slicer.org/u/alientex)\
**Replies:** 4\
**Last updated:** [July 1, 2025, 1:43pm UTC](https://discourse.slicer.org/t/help-integrating-vtku3dexporter-module-in-slicer/43540 "2025-07-01T13:43:56Z")

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Hello, I came across the VTKU3DExporter module, which allows exporting a VTK scene to the U3D file format. I would like to use the generated U3D file for including in 3D PDFs. I have successfully built this module inde…

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## [Chunky results from WrapSolidify](https://discourse.slicer.org/t/chunky-results-from-wrapsolidify/43546)

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**Author:** [@Ajna\_R](https://discourse.slicer.org/u/Ajna_R)\
**Replies:** 3\
**Last updated:** [July 1, 2025, 1:27pm UTC](https://discourse.slicer.org/t/chunky-results-from-wrapsolidify/43546 "2025-07-01T13:27:55Z")

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Wrap Solidify was working very well for shrinkwrapping my models, but now suddenly it has started only making either very boxy segments (carve holes set at 35mm or higher) or tiny fragments (carve holes set at 34mm or lo…

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## [Registration for liver donor CT and MR ](https://discourse.slicer.org/t/registration-for-liver-donor-ct-and-mr/43550)

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**Author:** [@MinHo\_Shin](https://discourse.slicer.org/u/MinHo_Shin)\
**Replies:** 1\
**Last updated:** [June 30, 2025, 11:19pm UTC](https://discourse.slicer.org/t/registration-for-liver-donor-ct-and-mr/43550 "2025-06-30T23:19:35Z")

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Dear community, I am a hepatobiliary surgeon using 3D Slicer for preoperative planning. Until now, I have been segmenting the portal vein, hepatic vein, and liver parenchyma from the delayed phase of a CT scan for liver…

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## [Making Markups and Exporting json in just one screen](https://discourse.slicer.org/t/making-markups-and-exporting-json-in-just-one-screen/43551)

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**Author:** [@Davi\_Pultrini](https://discourse.slicer.org/u/Davi_Pultrini)\
**Replies:** 1\
**Last updated:** [June 30, 2025, 7:32pm UTC](https://discourse.slicer.org/t/making-markups-and-exporting-json-in-just-one-screen/43551 "2025-06-30T19:32:04Z")

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Hello, I would like to build a module so that there is a screen where the person presses a button and the image loads, he makes the markings and presses a button to save the labels. But before doing the module, I want t…

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## [Changing the voxel size after segmentation](https://discourse.slicer.org/t/changing-the-voxel-size-after-segmentation/18584)

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**Author:** [@Philipp\_Maintz](https://discourse.slicer.org/u/Philipp_Maintz)\
**Replies:** 6\
**Last updated:** [June 30, 2025, 7:07pm UTC](https://discourse.slicer.org/t/changing-the-voxel-size-after-segmentation/18584 "2025-06-30T19:07:36Z")

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I have done multiple segmentations. The problem is I now realized that the voxel size is to big. Can I still change them and if so in what module?

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## [Error loading SlicerMorphRC.py](https://discourse.slicer.org/t/error-loading-slicermorphrc-py/43536)

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**Author:** [@AriD](https://discourse.slicer.org/u/AriD)\
**Replies:** 2\
**Last updated:** [June 30, 2025, 7:33am UTC](https://discourse.slicer.org/t/error-loading-slicermorphrc-py/43536 "2025-06-30T07:33:07Z")

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Hello, I’m using 3D Slicer version 5.8.1 and have been working with the SlicerMorph extension for some time. Recently, I started receiving the following error: “error loading SlicerMorphRC.py module ‘slicer’ has no at…

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## [Color tones change after OBJ export – how to preserve original shading?](https://discourse.slicer.org/t/color-tones-change-after-obj-export-how-to-preserve-original-shading/43417)

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**Author:** [@JohnWick](https://discourse.slicer.org/u/JohnWick)\
**Replies:** 11\
**Last updated:** [June 28, 2025, 1:31pm UTC](https://discourse.slicer.org/t/color-tones-change-after-obj-export-how-to-preserve-original-shading/43417 "2025-06-28T13:31:53Z")

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Dear 3D Slicer Developers and Community, I am experiencing an issue when exporting one or more 3D models from 3D Slicer in OBJ format. While the original color itself (i.e., the RGB values) is preserved in the exported .…

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## [Total Segmentator not working](https://discourse.slicer.org/t/total-segmentator-not-working/43506)

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**Author:** [@manjula](https://discourse.slicer.org/u/manjula)\
**Replies:** 6\
**Last updated:** [June 27, 2025, 7:39pm UTC](https://discourse.slicer.org/t/total-segmentator-not-working/43506 "2025-06-27T19:39:19Z")

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Hi, Total Segmentator worked just fine in my laptop but suddenly it stopped working |Processor|13th Gen Intel(R) Core™ i9-13980HX 2.20 GHz| |Installed RAM|64.0 GB | NVIDIA RTX 4080 12GB Traceback (most recent call …

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## [Segment Editor can not draw unless MRMLSliceView widget is displayed in full screen](https://discourse.slicer.org/t/segment-editor-can-not-draw-unless-mrmlsliceview-widget-is-displayed-in-full-screen/43527)

<div class="topic-metadata">

**Author:** [@stone\_S](https://discourse.slicer.org/u/stone_S)\
**Replies:** 1\
**Last updated:** [June 27, 2025, 4:36pm UTC](https://discourse.slicer.org/t/segment-editor-can-not-draw-unless-mrmlsliceview-widget-is-displayed-in-full-screen/43527 "2025-06-27T16:36:47Z")

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Operating system:ubuntu 22.04 Slicer version:5.0.3 Expected behavior:Segment Editor can use in normal size widget Actual behavior:After clicking the paint button, left mouse click in the SliceView window has no respon…

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## [How can i easily process aorta & branch segmentation and measure the x, y, and z axes of each part](https://discourse.slicer.org/t/how-can-i-easily-process-aorta-branch-segmentation-and-measure-the-x-y-and-z-axes-of-each-part/43519)

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**Author:** [@Yoo](https://discourse.slicer.org/u/Yoo)\
**Replies:** 0\
**Last updated:** [June 27, 2025, 10:11am UTC](https://discourse.slicer.org/t/how-can-i-easily-process-aorta-branch-segmentation-and-measure-the-x-y-and-z-axes-of-each-part/43519 "2025-06-27T10:11:49Z")

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Hello everyone, I am a new user who just learned about slicer. I am having a hard time learning about each one, so I need help. In the abdominal CT(CE), the aorta and IVC are lightened both in the delayed phase, and w…

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## [Slicer Not Responding when accessing DICOM Database](https://discourse.slicer.org/t/slicer-not-responding-when-accessing-dicom-database/43509)

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**Author:** [@CSalt](https://discourse.slicer.org/u/CSalt)\
**Replies:** 2\
**Last updated:** [June 26, 2025, 11:28pm UTC](https://discourse.slicer.org/t/slicer-not-responding-when-accessing-dicom-database/43509 "2025-06-26T23:28:51Z")

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Hello, I have been working on a project for a while now, and starting around two weeks ago, I have suddenly had problems getting DICOM files that I previously imported into the Slicer database (and was able to load norm…

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## [Use Volume or Surface Area for 2D Ultrasound Segmentation?](https://discourse.slicer.org/t/use-volume-or-surface-area-for-2d-ultrasound-segmentation/43508)

<div class="topic-metadata">

**Author:** [@Arian\_Amini](https://discourse.slicer.org/u/Arian_Amini)\
**Replies:** 0\
**Last updated:** [June 26, 2025, 7:39pm UTC](https://discourse.slicer.org/t/use-volume-or-surface-area-for-2d-ultrasound-segmentation/43508 "2025-06-26T19:39:01Z")

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Hello, I have segmented my ROI of 2D ultrasound images, and confused on how to measure the surface area of my segmentation. I exported a Segment Statistics table that includes Voxel Count, Volume (mm3), and Surface are…

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## [How to determine the resolution of the STL file exported from the 3D slicer?](https://discourse.slicer.org/t/how-to-determine-the-resolution-of-the-stl-file-exported-from-the-3d-slicer/34087)

<div class="topic-metadata">

**Author:** [@Yunus](https://discourse.slicer.org/u/Yunus)\
**Replies:** 11\
**Last updated:** [June 26, 2025, 5:31pm UTC](https://discourse.slicer.org/t/how-to-determine-the-resolution-of-the-stl-file-exported-from-the-3d-slicer/34087 "2025-06-26T17:31:21Z")

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I have segmented kidneys and other organs with 3D Slicer and exported them as an STL file. I also need to specify the model resolution, but I don’t know how to do this. What I have tried so far: before I exported the …

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## [Help with Landmark placement: Not actually placed on PLY surface](https://discourse.slicer.org/t/help-with-landmark-placement-not-actually-placed-on-ply-surface/43492)

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**Author:** [@jsguerra](https://discourse.slicer.org/u/jsguerra)\
**Replies:** 9\
**Last updated:** [June 26, 2025, 3:54pm UTC](https://discourse.slicer.org/t/help-with-landmark-placement-not-actually-placed-on-ply-surface/43492 "2025-06-26T15:54:20Z")

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Hello! I was placing some landmarks on a PLY surface and noticed that when I place/reposition a landmark to my desired position (Fig. 2), the landmark is not actually touching the model surface (Fig. 2). Is this normal o…

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## [Segmentation problem on a transformed volume](https://discourse.slicer.org/t/segmentation-problem-on-a-transformed-volume/43502)

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**Author:** [@SegmenterSam](https://discourse.slicer.org/u/SegmenterSam)\
**Replies:** 0\
**Last updated:** [June 26, 2025, 2:28pm UTC](https://discourse.slicer.org/t/segmentation-problem-on-a-transformed-volume/43502 "2025-06-26T14:28:22Z")

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Hi all, This rCBV map has been transformed to fit over another volume. However, is seems that the editable area that allows segmentation has not moved along with it. How do I adjust this area so that I can segment areas…

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## [Red Boundary/Border Around Frame in Version 5.8.1](https://discourse.slicer.org/t/red-boundary-border-around-frame-in-version-5-8-1/43285)

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**Author:** [@rcpr](https://discourse.slicer.org/u/rcpr)\
**Replies:** 5\
**Last updated:** [June 26, 2025, 2:25pm UTC](https://discourse.slicer.org/t/red-boundary-border-around-frame-in-version-5-8-1/43285 "2025-06-26T14:25:04Z")

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I’m using Slicer to acquire and record sequences in real-time via the PLUS server. I’ve recently started using version 5.8.1, and I’ve noticed a red boundary appearing around the acquired sequence. My issue is that even…

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## [GeoSlicer on HPC](https://discourse.slicer.org/t/geoslicer-on-hpc/43316)

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**Author:** [@Lucas\_Givord](https://discourse.slicer.org/u/Lucas_Givord)\
**Replies:** 3\
**Last updated:** [June 26, 2025, 2:13pm UTC](https://discourse.slicer.org/t/geoslicer-on-hpc/43316 "2025-06-26T14:13:35Z")

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Hello everyone, I saw this post discourse about a slicer based app focused on geological use case : GeoSlicer open source release. From what I read on Github, this application seems also to target HPC. AFAIK Slicer doe…

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## [Extension manager causing freeze](https://discourse.slicer.org/t/extension-manager-causing-freeze/43499)

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**Author:** [@Woolfian](https://discourse.slicer.org/u/Woolfian)\
**Replies:** 1\
**Last updated:** [June 26, 2025, 10:49am UTC](https://discourse.slicer.org/t/extension-manager-causing-freeze/43499 "2025-06-26T10:49:39Z")

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Hi there, I have an issue with a fresh install of Slicer 5.8.1 on a PC running Windows 10 Enterprise. After install, I opened the extension manager once to successfully install one module (SurfaceWrapSolidify). Every ti…

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## [Slicer frozen when loading large MR volume (\>1GB)](https://discourse.slicer.org/t/slicer-frozen-when-loading-large-mr-volume-1gb/43483)

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**Author:** [@joved81744](https://discourse.slicer.org/u/joved81744)\
**Replies:** 1\
**Last updated:** [June 25, 2025, 4:23pm UTC](https://discourse.slicer.org/t/slicer-frozen-when-loading-large-mr-volume-1gb/43483 "2025-06-25T16:23:15Z")

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Hey guys… :waving\_hand: Slicer (v5.2.2) crashes or freezes when I load a large MR volume (1.2 GB NIfTI). The progress bar gets stuck at ~30 %, and no console errors appear. Restarting works, but fails again on the same …

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## [Transformation matrix in B spline Deformable registration module](https://discourse.slicer.org/t/transformation-matrix-in-b-spline-deformable-registration-module/43488)

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**Author:** [@azam](https://discourse.slicer.org/u/azam)\
**Replies:** 0\
**Last updated:** [June 25, 2025, 1:34pm UTC](https://discourse.slicer.org/t/transformation-matrix-in-b-spline-deformable-registration-module/43488 "2025-06-25T13:34:19Z")

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Hi everyone I have two DICOM CT images (CT1, CT2) (Matrix size: 512,512,111) that I want to register them with B spline deformable registration module. I have also exported a RT dose file (RT2) (Matrix size:100,61,1) …

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## [Manual Brain Tumor Segmentation – Dice Score 1.0 – Study Kit for Learners (3D Slicer Project Included)](https://discourse.slicer.org/t/manual-brain-tumor-segmentation-dice-score-1-0-study-kit-for-learners-3d-slicer-project-included/43482)

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**Author:** [@Drnoor\_fatima](https://discourse.slicer.org/u/Drnoor_fatima)\
**Replies:** 0\
**Last updated:** [June 25, 2025, 1:17pm UTC](https://discourse.slicer.org/t/manual-brain-tumor-segmentation-dice-score-1-0-study-kit-for-learners-3d-slicer-project-included/43482 "2025-06-25T13:17:07Z")

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Hi everyone, I recently completed a manual segmentation of a brain tumor from the BraTS dataset using 3D Slicer (12+ hours of refinement and validation). I used: • Thresholding • Level tracing • Smoothing (to anatomi…

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## [Is it possible to edit the ImageOrientationPatient DICOM tag in slicer?](https://discourse.slicer.org/t/is-it-possible-to-edit-the-imageorientationpatient-dicom-tag-in-slicer/2648)

<div class="topic-metadata">

**Author:** [@Lowey](https://discourse.slicer.org/u/Lowey)\
**Replies:** 6\
**Last updated:** [June 25, 2025, 8:01am UTC](https://discourse.slicer.org/t/is-it-possible-to-edit-the-imageorientationpatient-dicom-tag-in-slicer/2648 "2025-06-25T08:01:21Z")

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Hi, I am hoping it is possible to edit the ImageOrientationPatient DICOM tag and associated image within Slicer. My problem, I have a CT image which has been transformed with 6 degrees of freedom (3 Translations and 3…

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## [Problems with alpaca ](https://discourse.slicer.org/t/problems-with-alpaca/43461)

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**Author:** [@aventador17](https://discourse.slicer.org/u/aventador17)\
**Replies:** 6\
**Last updated:** [June 25, 2025, 1:35am UTC](https://discourse.slicer.org/t/problems-with-alpaca/43461 "2025-06-25T01:35:49Z")

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Hello, this is my first time using 3d slicer. I write to community 'cause I have had some problem with ALPACA, it does not run . The phyton console showes this: In the future np.bool will be defined as the correspondin…

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## [Logo and Stickers](https://discourse.slicer.org/t/logo-and-stickers/43443)

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**Author:** [@Esteban\_Barreiro](https://discourse.slicer.org/u/Esteban_Barreiro)\
**Replies:** 2\
**Last updated:** [June 24, 2025, 6:46pm UTC](https://discourse.slicer.org/t/logo-and-stickers/43443 "2025-06-24T18:46:37Z")

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Hi! Is there any link to download 3dSlicer’s logos and stickers to put them on posters or academic presentations?

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## [Imaging of the pulp chamber with CBCT](https://discourse.slicer.org/t/imaging-of-the-pulp-chamber-with-cbct/43460)

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**Author:** [@BDab1212](https://discourse.slicer.org/u/BDab1212)\
**Replies:** 0\
**Last updated:** [June 23, 2025, 5:13pm UTC](https://discourse.slicer.org/t/imaging-of-the-pulp-chamber-with-cbct/43460 "2025-06-23T17:13:06Z")

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Hey guys, I recently startet using slicer 3D and have the task of do measurements of the pulp chamber in a study model (in vitro model with extracted canines). Does anyone have experiences of marking and measuring the …

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## [Problem About Bone Microstructural Analysis on a  MicroCt Data](https://discourse.slicer.org/t/problem-about-bone-microstructural-analysis-on-a-microct-data/43317)

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**Author:** [@TAHA\_KOSE](https://discourse.slicer.org/u/TAHA_KOSE)\
**Replies:** 4\
**Last updated:** [June 23, 2025, 12:32pm UTC](https://discourse.slicer.org/t/problem-about-bone-microstructural-analysis-on-a-microct-data/43317 "2025-06-23T12:32:51Z")

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I am trying to perform trabecular separation, trabecular thickness, trabecular number and bone volume/tissue volume analyses on an irregularly shaped segmented area on the microct dataset. While I am getting normal value…

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## [HoloLens get stuck on "Receiving..." when connecting to SlicerVirtualReality](https://discourse.slicer.org/t/hololens-get-stuck-on-receiving-when-connecting-to-slicervirtualreality/37571)

<div class="topic-metadata">

**Author:** [@Beatriz\_2](https://discourse.slicer.org/u/Beatriz_2)\
**Replies:** 2\
**Last updated:** [June 23, 2025, 10:49am UTC](https://discourse.slicer.org/t/hololens-get-stuck-on-receiving-when-connecting-to-slicervirtualreality/37571 "2025-06-23T10:49:17Z")

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Operating system: Windows 11 on pc Hi. I tried to connect HoloLens 2 to SlicerVirtualReality. For that purpose I follow the steps in the github. However when I try the first step - set up Windows Mixed Reality - I have…

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## [5070ti could not be recognized in slicer 5.8.1](https://discourse.slicer.org/t/5070ti-could-not-be-recognized-in-slicer-5-8-1/43436)

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**Author:** [@reka\_wolf](https://discourse.slicer.org/u/reka_wolf)\
**Replies:** 3\
**Last updated:** [June 22, 2025, 2:34pm UTC](https://discourse.slicer.org/t/5070ti-could-not-be-recognized-in-slicer-5-8-1/43436 "2025-06-22T14:34:06Z")

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5070ti could not be recognized in slicer 5.8.1. The newest cuda 12.8 is only for 50series, but it could not be supported in slicer 5.8.1 which cuda version is 12.6. Please help

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## [Segment middle & inner ear](https://discourse.slicer.org/t/segment-middle-inner-ear/43447)

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**Author:** [@Nadine\_Nabil](https://discourse.slicer.org/u/Nadine_Nabil)\
**Replies:** 4\
**Last updated:** [June 21, 2025, 5:17pm UTC](https://discourse.slicer.org/t/segment-middle-inner-ear/43447 "2025-06-21T17:17:24Z")

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Hi everyone, I’m trying to segment the middle and inner ear in high anatomical detail using 3D Slicer. I need to extract small structures like: Any advice or workflows for segmenting these fine structures? Should I…

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