# Support

**URL:** https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=34

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

**Page:** 35

---

## [Scene views broken?](https://discourse.slicer.org/t/scene-views-broken/43682)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 3\
**Last updated:** [July 11, 2025, 7:04pm UTC](https://discourse.slicer.org/t/scene-views-broken/43682 "2025-07-11T19:04:42Z")

</div>

When I try to use scene views, I can capture the node state but cannot restore from it. This is on latest preview on Mac. There are also messages like this in the log file: Switch to module: "SceneViews" "Segmentation"…

---

## [how to manually edit part of a curve after automatic generation in 3d slicer?](https://discourse.slicer.org/t/how-to-manually-edit-part-of-a-curve-after-automatic-generation-in-3d-slicer/43650)

<div class="topic-metadata">

**Author:** [@LJW](https://discourse.slicer.org/u/LJW)\
**Replies:** 2\
**Last updated:** [July 11, 2025, 4:12pm UTC](https://discourse.slicer.org/t/how-to-manually-edit-part-of-a-curve-after-automatic-generation-in-3d-slicer/43650 "2025-07-11T16:12:01Z")

</div>

Hi, I’m currently doing research and not very familiar with 3D Slicer, so I’m posting my question here. I generated a curve using the following settings: Curve Type: Shortest distance on surface Model Node: Model Cost…

---

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

<div class="topic-metadata">

**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")

</div>

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…

---

## [Connecting Closed Curves](https://discourse.slicer.org/t/connecting-closed-curves/43683)

<div class="topic-metadata">

**Author:** [@Ryan\_Jones](https://discourse.slicer.org/u/Ryan_Jones)\
**Replies:** 0\
**Last updated:** [July 10, 2025, 11:37pm UTC](https://discourse.slicer.org/t/connecting-closed-curves/43683 "2025-07-10T23:37:01Z")

</div>

I have a series of closed curves representing a annular structure, I want to loft these into a solid model of the annulus. Is this possible in 3D slicer?

---

## [Custom slicer Ctest failed](https://discourse.slicer.org/t/custom-slicer-ctest-failed/43677)

<div class="topic-metadata">

**Author:** [@hansmoda](https://discourse.slicer.org/u/hansmoda)\
**Replies:** 0\
**Last updated:** [July 10, 2025, 7:51am UTC](https://discourse.slicer.org/t/custom-slicer-ctest-failed/43677 "2025-07-10T07:51:26Z")

</div>

I ran into this issue when I was performing automated tests with ctest command line：“D:\\cmake\\bin\\ctest.exe” -C Release -V -R “custommodule” error: \[D:/DSI/slicer-build/bin/Release/CustomApp-real.exe\] exit abnormally -…

---

## [Error when running MONAI Auto3DSeg (cannot import name ‘MetaKeys’ from ‘monai.utils’)](https://discourse.slicer.org/t/error-when-running-monai-auto3dseg-cannot-import-name-metakeys-from-monai-utils/35738)

<div class="topic-metadata">

**Author:** [@davidngqk88](https://discourse.slicer.org/u/davidngqk88)\
**Replies:** 5\
**Last updated:** [July 9, 2025, 4:37pm UTC](https://discourse.slicer.org/t/error-when-running-monai-auto3dseg-cannot-import-name-metakeys-from-monai-utils/35738 "2025-07-09T16:37:22Z")

</div>

Am testing it on some abdominal CT datasets now. am getting errors saying ImportError: cannot import name ‘MetaKeys’ from ‘monai.utils’ ‘Processing failed with return code 1’ after it attempts to create the segmentat…

---

## [Segmenting Thin Spaces (Sparse Contours)](https://discourse.slicer.org/t/segmenting-thin-spaces-sparse-contours/43647)

<div class="topic-metadata">

**Author:** [@Ryan\_Jones](https://discourse.slicer.org/u/Ryan_Jones)\
**Replies:** 1\
**Last updated:** [July 9, 2025, 4:29pm UTC](https://discourse.slicer.org/t/segmenting-thin-spaces-sparse-contours/43647 "2025-07-09T16:29:08Z")

</div>

Hi, I need to segment the subarachnoid space in some canine MRIs. This space is extremely thin, however, I would like to maintain some of the information about variable thicknesses so simply segmenting an inner surface a…

---

## [CLOSEDPLANAR\_XOR visualization artefact with holes 2D](https://discourse.slicer.org/t/closedplanar-xor-visualization-artefact-with-holes-2d/43589)

<div class="topic-metadata">

**Author:** [@ferhue](https://discourse.slicer.org/u/ferhue)\
**Replies:** 5\
**Last updated:** [July 9, 2025, 11:03am UTC](https://discourse.slicer.org/t/closedplanar-xor-visualization-artefact-with-holes-2d/43589 "2025-07-09T11:03:13Z")

</div>

I have a 2D contour with a hole, that I am storing in an RTstruct as two contours of type CLOSEDPLANAR\_XOR. The visualization looks weird in 3D Slicer: whereas if I plot it in matplotlib, I do not see anything really…

---

## [general registration](https://discourse.slicer.org/t/general-registration/43652)

<div class="topic-metadata">

**Author:** [@Luca\_Ciani](https://discourse.slicer.org/u/Luca_Ciani)\
**Replies:** 2\
**Last updated:** [July 9, 2025, 1:21am UTC](https://discourse.slicer.org/t/general-registration/43652 "2025-07-09T01:21:02Z")

</div>

good evening, i’d like to ask the reason why my microct scans can’t be seen in the general registration! I load the bitmap file series as a volume, but when I want to register them they don’t exist in the fixed image v…

---

## [how to compute average vertical (y-axis) distance between two curves in 3d space?](https://discourse.slicer.org/t/how-to-compute-average-vertical-y-axis-distance-between-two-curves-in-3d-space/43649)

<div class="topic-metadata">

**Author:** [@LJW](https://discourse.slicer.org/u/LJW)\
**Replies:** 1\
**Last updated:** [July 8, 2025, 9:39pm UTC](https://discourse.slicer.org/t/how-to-compute-average-vertical-y-axis-distance-between-two-curves-in-3d-space/43649 "2025-07-08T21:39:01Z")

</div>

hi, i’m trying to find the average vertical distance (along the y-axis) between two curves in 3d space. basically, i want to measure how far apart the two curves are in the y-direction — not the full 3d distance, just …

---

## [Difficulty Registering Pre- and Post-Surgery CBCT Datasets without Fiducials](https://discourse.slicer.org/t/difficulty-registering-pre-and-post-surgery-cbct-datasets-without-fiducials/43646)

<div class="topic-metadata">

**Author:** [@A\_C](https://discourse.slicer.org/u/A_C)\
**Replies:** 1\
**Last updated:** [July 8, 2025, 9:32pm UTC](https://discourse.slicer.org/t/difficulty-registering-pre-and-post-surgery-cbct-datasets-without-fiducials/43646 "2025-07-08T21:32:24Z")

</div>

Hi all, I’m currently working on a project involving two DICOM datasets acquired via CBCT (cone-beam CT). The first dataset was taken before a surgical procedure, and the second one after a tooth extraction. Unfortunate…

---

## [Extracting Implants model form CT scan](https://discourse.slicer.org/t/extracting-implants-model-form-ct-scan/43607)

<div class="topic-metadata">

**Author:** [@Naseem\_Machlovi](https://discourse.slicer.org/u/Naseem_Machlovi)\
**Replies:** 4\
**Last updated:** [July 8, 2025, 9:00pm UTC](https://discourse.slicer.org/t/extracting-implants-model-form-ct-scan/43607 "2025-07-08T21:00:18Z")

</div>

Hi, I am new to 3d Slicer and figuring things out. I am planning to extract implant models from patient CT scans and then perform some FEA analysis. Can you please guide me if this is something doable, and if so, do we …

---

## [Defining Custom Cross-Sectional Planes in 3D Slicer Using Vectors](https://discourse.slicer.org/t/defining-custom-cross-sectional-planes-in-3d-slicer-using-vectors/43645)

<div class="topic-metadata">

**Author:** [@Alex-Martin1](https://discourse.slicer.org/u/Alex-Martin1)\
**Replies:** 1\
**Last updated:** [July 8, 2025, 5:35pm UTC](https://discourse.slicer.org/t/defining-custom-cross-sectional-planes-in-3d-slicer-using-vectors/43645 "2025-07-08T17:35:14Z")

</div>

Hi everyone, I’m writing here to ask whether something I’ve been doing in Amira can be replicated in an open-source software like 3D Slicer. Specifically, I need to define a cross-sectional plane with a specific orient…

---

## [Curve deviates or forms spikes when using Open Curve Markup Tool](https://discourse.slicer.org/t/curve-deviates-or-forms-spikes-when-using-open-curve-markup-tool/43654)

<div class="topic-metadata">

**Author:** [@LJW](https://discourse.slicer.org/u/LJW)\
**Replies:** 0\
**Last updated:** [July 8, 2025, 12:46pm UTC](https://discourse.slicer.org/t/curve-deviates-or-forms-spikes-when-using-open-curve-markup-tool/43654 "2025-07-08T12:46:15Z")

</div>

Hi, I’m using the Open Curve Markup Tool in 3D Slicer to create curves on a surface model, such as between the mesial and distal papilla of a tooth. To support this, I’m also calculating and visualizing minimum curvatur…

---

## [Infarct volume CT scan](https://discourse.slicer.org/t/infarct-volume-ct-scan/43653)

<div class="topic-metadata">

**Author:** [@dani07ms](https://discourse.slicer.org/u/dani07ms)\
**Replies:** 0\
**Last updated:** [July 8, 2025, 12:46pm UTC](https://discourse.slicer.org/t/infarct-volume-ct-scan/43653 "2025-07-08T12:46:11Z")

</div>

Hi, I’m doing clinical research in neuroradiology and need to measure cerebellar infarct volumes and also posterior cranial fossa, braintem and cerebellum volumes of around 200 patients. I’m doing it with 3D Slicer but i…

---

## [Repeated Segment Comparison Metric Calculations](https://discourse.slicer.org/t/repeated-segment-comparison-metric-calculations/43648)

<div class="topic-metadata">

**Author:** [@vmcjmk](https://discourse.slicer.org/u/vmcjmk)\
**Replies:** 0\
**Last updated:** [July 8, 2025, 12:46pm UTC](https://discourse.slicer.org/t/repeated-segment-comparison-metric-calculations/43648 "2025-07-08T12:46:01Z")

</div>

Hi there, I’m very new to 3D Slicer and was wondering about going through multiple pairs of segments in the segment comparison module. For each patient I have, I have one “reference segment” for each cancer nodule as a …

---

## [Connect slicer with blender](https://discourse.slicer.org/t/connect-slicer-with-blender/43638)

<div class="topic-metadata">

**Author:** [@Estherphan](https://discourse.slicer.org/u/Estherphan)\
**Replies:** 1\
**Last updated:** [July 8, 2025, 2:44am UTC](https://discourse.slicer.org/t/connect-slicer-with-blender/43638 "2025-07-08T02:44:46Z")

</div>

Hello, everyone. I’m new to using Slicer. Right now, I need to design a surgical guide for implant placement, but I can’t link Slicer with Blender. Could anyone please help me?Thanks

---

## [Volumes display Image Spacing and Image Origin wrong?](https://discourse.slicer.org/t/volumes-display-image-spacing-and-image-origin-wrong/43587)

<div class="topic-metadata">

**Author:** [@StephenLeePeng](https://discourse.slicer.org/u/StephenLeePeng)\
**Replies:** 5\
**Last updated:** [July 7, 2025, 1:27am UTC](https://discourse.slicer.org/t/volumes-display-image-spacing-and-image-origin-wrong/43587 "2025-07-07T01:27:30Z")

</div>

When I load a CT Lung series (axial) into Slicer 4.13, and switch to the “Volumes” Module, and the “Image Spacing” and “Image Origin” display: \[1mm, 1mm, 1mm\] and \[0, 0, 0\] as picture below. But when I dcmdump the ra…

---

## [Difference between the dimensions of the CT and RT dose](https://discourse.slicer.org/t/difference-between-the-dimensions-of-the-ct-and-rt-dose/38386)

<div class="topic-metadata">

**Author:** [@azam](https://discourse.slicer.org/u/azam)\
**Replies:** 3\
**Last updated:** [July 6, 2025, 11:30am UTC](https://discourse.slicer.org/t/difference-between-the-dimensions-of-the-ct-and-rt-dose/38386 "2025-07-06T11:30:11Z")

</div>

Hi everyone I have CT, RT dose and RT structure files that I have exported from the treatment planning system. As you can see in the figure, the dimensions of the CT image and RT dose are different. How do these two fil…

---

## [How to incorporate FixedParameters in manual calculation of affine linear transformation](https://discourse.slicer.org/t/how-to-incorporate-fixedparameters-in-manual-calculation-of-affine-linear-transformation/43584)

<div class="topic-metadata">

**Author:** [@spichardo](https://discourse.slicer.org/u/spichardo)\
**Replies:** 3\
**Last updated:** [July 4, 2025, 5:34pm UTC](https://discourse.slicer.org/t/how-to-incorporate-fixedparameters-in-manual-calculation-of-affine-linear-transformation/43584 "2025-07-04T17:34:56Z")

</div>

Hi, I just noticed that sometime between release 5.6.2 and 5.8.1 some changes were made how the linear transform text files were saved. In particular, now FixedParameters have values different from 0. I used this origin…

---

## [Segmenting lung PET/CT](https://discourse.slicer.org/t/segmenting-lung-pet-ct/43560)

<div class="topic-metadata">

**Author:** [@ScleroPID](https://discourse.slicer.org/u/ScleroPID)\
**Replies:** 1\
**Last updated:** [July 4, 2025, 2:28am UTC](https://discourse.slicer.org/t/segmenting-lung-pet-ct/43560 "2025-07-04T02:28:27Z")

</div>

Hi, I’m new to 3D Slicer and still trying to get the hang of it. I would really appreciate your help with a few questions: I’m looking for an easy and reproducible way to segment lung CT scans. I’ve tried using the Se…

---

## [Edit the rotation tags in DICOM CT slices without modify the image](https://discourse.slicer.org/t/edit-the-rotation-tags-in-dicom-ct-slices-without-modify-the-image/43566)

<div class="topic-metadata">

**Author:** [@JFC](https://discourse.slicer.org/u/JFC)\
**Replies:** 4\
**Last updated:** [July 4, 2025, 2:25am UTC](https://discourse.slicer.org/t/edit-the-rotation-tags-in-dicom-ct-slices-without-modify-the-image/43566 "2025-07-04T02:25:28Z")

</div>

Dear all: I would like to know the option in 3D Slicer to edic the DICOM tags regarding to the patient rotation, without modify the CT images. Please, anyone has experinec with this issue?. Thanks so mch. JFC Barcelo…

---

## [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)

<div class="topic-metadata">

**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")

</div>

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…

---

## [Cannot find libraries when loading custom loadable extension because of versioning](https://discourse.slicer.org/t/cannot-find-libraries-when-loading-custom-loadable-extension-because-of-versioning/43582)

<div class="topic-metadata">

**Author:** [@glso](https://discourse.slicer.org/u/glso)\
**Replies:** 1\
**Last updated:** [July 2, 2025, 5:00pm UTC](https://discourse.slicer.org/t/cannot-find-libraries-when-loading-custom-loadable-extension-because-of-versioning/43582 "2025-07-02T17:00:32Z")

</div>

Hi, I built a loadable extension which builds and runs successfully on my Slicer-Release (5.9), built from source code on x86\_64 architecture on MacOS. My CMake version is 3.22.6. I wanted to package the extension so t…

---

## [Closed curve constrained to model surface jumps to weird locations](https://discourse.slicer.org/t/closed-curve-constrained-to-model-surface-jumps-to-weird-locations/43575)

<div class="topic-metadata">

**Author:** [@cliftong](https://discourse.slicer.org/u/cliftong)\
**Replies:** 2\
**Last updated:** [July 2, 2025, 4:39pm UTC](https://discourse.slicer.org/t/closed-curve-constrained-to-model-surface-jumps-to-weird-locations/43575 "2025-07-02T16:39:31Z")

</div>

Mac OSX Slicer 5.9.0-2025-04-25 I’m hoping to use a closed curve to make a new surface model from an existing model, but the closed curve behaves weirdly when I try to constrain it to the model surface. Based on previ…

---

## [TotalSegmentator failed to compute – ModuleNotFoundError: No module named 'skimage.morphology'](https://discourse.slicer.org/t/totalsegmentator-failed-to-compute-modulenotfounderror-no-module-named-skimage-morphology/43577)

<div class="topic-metadata">

**Author:** [@Mael](https://discourse.slicer.org/u/Mael)\
**Replies:** 0\
**Last updated:** [July 2, 2025, 2:40pm UTC](https://discourse.slicer.org/t/totalsegmentator-failed-to-compute-modulenotfounderror-no-module-named-skimage-morphology/43577 "2025-07-02T14:40:14Z")

</div>

Hi everyone, I’m trying to use the TotalSegmentator extension in 3D Slicer, but I get an error when I try to compute the segmentation. The error message is: ModuleNotFoundError: No module named 'skimage.morphology' I…

---

## [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)

<div class="topic-metadata">

**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")

</div>

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…

---

## [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")

</div>

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…

---

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

<div class="topic-metadata">

**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")

</div>

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…

---

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

<div class="topic-metadata">

**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")

</div>

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…

[Previous page](https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=33)

[Next page](https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=35)