# Support

**URL:** https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=74

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

**Page:** 75

---

## [Parameter do not exist warning](https://discourse.slicer.org/t/parameter-do-not-exist-warning/38441)

<div class="topic-metadata">

**Author:** [@bserrano](https://discourse.slicer.org/u/bserrano)\
**Replies:** 1\
**Last updated:** [September 19, 2024, 12:25pm UTC](https://discourse.slicer.org/t/parameter-do-not-exist-warning/38441 "2024-09-19T12:25:58Z")

</div>

Hi all, I have a script for automating scalar volume resampling: reslicedVolumeNode = slicer.mrmlScene.AddNewNodeByClass("vtkMRMLScalarVolumeNode", name) parameters = { "outputPixelSpacing":"{:},{:},{:}".fo…

---

## [Mould Generator](https://discourse.slicer.org/t/mould-generator/38440)

<div class="topic-metadata">

**Author:** [@LukasKnybel](https://discourse.slicer.org/u/LukasKnybel)\
**Replies:** 0\
**Last updated:** [September 19, 2024, 10:57am UTC](https://discourse.slicer.org/t/mould-generator/38440 "2024-09-19T10:57:17Z")

</div>

Dear Slicer Users, I have a problem with brachytherapy mould generator. The created model is invalid and has “zero” volume, so it doesn´t exist. I just see it in the Data Module after creation. Could someone confirm th…

---

## [How to install a package](https://discourse.slicer.org/t/how-to-install-a-package/38410)

<div class="topic-metadata">

**Author:** [@maniron](https://discourse.slicer.org/u/maniron)\
**Replies:** 4\
**Last updated:** [September 19, 2024, 4:08am UTC](https://discourse.slicer.org/t/how-to-install-a-package/38410 "2024-09-19T04:08:17Z")

</div>

I am trying to install a package named spatial\_correlation-sampler, but the installation is not going through “error: legacy-install-failure” I ran PythonSlicer.exe -m pip install spatial\_correlation-sampler ModuleNotF…

---

## [Visualizing the neutral axis on segment geometry](https://discourse.slicer.org/t/visualizing-the-neutral-axis-on-segment-geometry/38099)

<div class="topic-metadata">

**Author:** [@CristianK](https://discourse.slicer.org/u/CristianK)\
**Replies:** 6\
**Last updated:** [September 19, 2024, 12:05am UTC](https://discourse.slicer.org/t/visualizing-the-neutral-axis-on-segment-geometry/38099 "2024-09-19T00:05:17Z")

</div>

Hi @jmhuie I was wondering if it would be possible to plot the neutral axis on the structure cross-section when aligned with the principal axis. I am comparing structures that vary considerably in cross-section shape an…

---

## [Segment editing](https://discourse.slicer.org/t/segment-editing/38418)

<div class="topic-metadata">

**Author:** [@Lee\_Fei](https://discourse.slicer.org/u/Lee_Fei)\
**Replies:** 5\
**Last updated:** [September 18, 2024, 9:40pm UTC](https://discourse.slicer.org/t/segment-editing/38418 "2024-09-18T21:40:05Z")

</div>

Hello, I am having some trouble segment editing my scan. Is there something I must do before I begin using the editing tools? Under the Segment edit module, when I select the file title, click “add”, and use the erase t…

---

## [Custom module does not appear in 'modules' section in Settings](https://discourse.slicer.org/t/custom-module-does-not-appear-in-modules-section-in-settings/37975)

<div class="topic-metadata">

**Author:** [@andrew\_why\_not](https://discourse.slicer.org/u/andrew_why_not)\
**Replies:** 11\
**Last updated:** [September 18, 2024, 4:09pm UTC](https://discourse.slicer.org/t/custom-module-does-not-appear-in-modules-section-in-settings/37975 "2024-09-18T16:09:20Z")

</div>

So, I made a package of my custom extension in the Debug version of the Slicer. Then, I use another PC to add it, I open Extensions Manager and install the package from .zip file. After restarting the Slicer, I can see …

---

## [How to combine the CT packages of hip, knee and ankle](https://discourse.slicer.org/t/how-to-combine-the-ct-packages-of-hip-knee-and-ankle/38417)

<div class="topic-metadata">

**Author:** [@angelica\_arrighetti](https://discourse.slicer.org/u/angelica_arrighetti)\
**Replies:** 3\
**Last updated:** [September 18, 2024, 2:56pm UTC](https://discourse.slicer.org/t/how-to-combine-the-ct-packages-of-hip-knee-and-ankle/38417 "2024-09-18T14:56:37Z")

</div>

Goodmorning, Is it possible to know all the procedures to combine different CT packages of hip knee and anke to align them and so be able to do mesurements, and also how can i mesure angles like LDFA or MPTA or JLCA usi…

---

## [ExtensionIndex : can the scmurl field point to anywhere?](https://discourse.slicer.org/t/extensionindex-can-the-scmurl-field-point-to-anywhere/31446)

<div class="topic-metadata">

**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 3\
**Last updated:** [September 18, 2024, 2:43pm UTC](https://discourse.slicer.org/t/extensionindex-can-the-scmurl-field-point-to-anywhere/31446 "2024-09-18T14:43:43Z")

</div>

Hi, I wish to know if the scmurl field of the \*.s4ext file in the ExtensionIndex must point to a github repository? Would an extension be built if it points elsewhere, to a gitlab repository for example? Thank you.

---

## [Center of mass calculation](https://discourse.slicer.org/t/center-of-mass-calculation/38243)

<div class="topic-metadata">

**Author:** [@francois](https://discourse.slicer.org/u/francois)\
**Replies:** 5\
**Last updated:** [September 18, 2024, 1:42pm UTC](https://discourse.slicer.org/t/center-of-mass-calculation/38243 "2024-09-18T13:42:08Z")

</div>

How can we ignore part a volume in order to calculate a center of mass, based on HU. It seems that each tine it takes into account the “empty” voxels whatever value is applied: 0 or NaN.

---

## [Starting Lung analysis project with 3D slicer](https://discourse.slicer.org/t/starting-lung-analysis-project-with-3d-slicer/38411)

<div class="topic-metadata">

**Author:** [@Daniel\_Lo](https://discourse.slicer.org/u/Daniel_Lo)\
**Replies:** 0\
**Last updated:** [September 17, 2024, 3:02pm UTC](https://discourse.slicer.org/t/starting-lung-analysis-project-with-3d-slicer/38411 "2024-09-17T15:02:42Z")

</div>

Hi, i would like to start a project about lung analysis. The idea is to do autosegmentation for CT scans with 3D slicer and build a machine learning or deep learning model. for autosegmentation part, what are the recomm…

---

## [Export colorized volume to .gltf](https://discourse.slicer.org/t/export-colorized-volume-to-gltf/37915)

<div class="topic-metadata">

**Author:** [@Rafael\_V\_Monteiro](https://discourse.slicer.org/u/Rafael_V_Monteiro)\
**Replies:** 14\
**Last updated:** [September 17, 2024, 2:27pm UTC](https://discourse.slicer.org/t/export-colorized-volume-to-gltf/37915 "2024-09-17T14:27:22Z")

</div>

Dear community: I am starting to use the colorize volume extension, got my colorized volume, but can´t export it to .gltf through the OpenAnatomy export extension. My objective is to show the colorized volume online. A…

---

## [How to copy one segment from a segmentation node to a different segmentation with code?](https://discourse.slicer.org/t/how-to-copy-one-segment-from-a-segmentation-node-to-a-different-segmentation-with-code/19286)

<div class="topic-metadata">

**Author:** [@akshay\_pillai](https://discourse.slicer.org/u/akshay_pillai)\
**Replies:** 5\
**Last updated:** [September 17, 2024, 4:50am UTC](https://discourse.slicer.org/t/how-to-copy-one-segment-from-a-segmentation-node-to-a-different-segmentation-with-code/19286 "2024-09-17T04:50:47Z")

</div>

I’m trying to copy a segment from one segmentation to another, but I don’t know how to do it automatically in my code. I know that we can drag and drop in the data module, but is there a way to do this with code?

---

## [Bad performance when segmenting 11GB micro-CT](https://discourse.slicer.org/t/bad-performance-when-segmenting-11gb-micro-ct/38362)

<div class="topic-metadata">

**Author:** [@JaredAmudeo](https://discourse.slicer.org/u/JaredAmudeo)\
**Replies:** 12\
**Last updated:** [September 16, 2024, 11:02pm UTC](https://discourse.slicer.org/t/bad-performance-when-segmenting-11gb-micro-ct/38362 "2024-09-16T23:02:44Z")

</div>

Hi! I am currently trying to segment some fossil material on a new desktop PC with the following specs: Lenovo ThinkStation Windows 11 Pro, Intel Xeon Silver 4208, 128 GB DDR4 (2400 MHz) RAM, Nvidia RTX A5000 24 GB, a…

---

## [Questions about 3D Slicer features](https://discourse.slicer.org/t/questions-about-3d-slicer-features/38403)

<div class="topic-metadata">

**Author:** [@Lee\_Fei](https://discourse.slicer.org/u/Lee_Fei)\
**Replies:** 1\
**Last updated:** [September 16, 2024, 8:18pm UTC](https://discourse.slicer.org/t/questions-about-3d-slicer-features/38403 "2024-09-16T20:18:57Z")

</div>

Hello, I am interested in trying out 3D Slicer but I have some questions… If you have any insight on these topics, it would be greatly appreciated! Does 3D slicer have the following features? Boolean Operation 3D…

---

## [Create a markup line after fiducial points being placed](https://discourse.slicer.org/t/create-a-markup-line-after-fiducial-points-being-placed/38402)

<div class="topic-metadata">

**Author:** [@Kuan\_Yi\_Wang](https://discourse.slicer.org/u/Kuan_Yi_Wang)\
**Replies:** 0\
**Last updated:** [September 16, 2024, 7:40pm UTC](https://discourse.slicer.org/t/create-a-markup-line-after-fiducial-points-being-placed/38402 "2024-09-16T19:40:16Z")

</div>

I am working on a Python extension and was wondering how I could first drop any amount of fiducial nodes and then connect them manually with a line while showing the measurement? Thank you so much.

---

## [CBCTToothSegmentation: How to fix "torch.load with weights\_only=False"](https://discourse.slicer.org/t/cbcttoothsegmentation-how-to-fix-torch-load-with-weights-only-false/38398)

<div class="topic-metadata">

**Author:** [@Bay\_6](https://discourse.slicer.org/u/Bay_6)\
**Replies:** 1\
**Last updated:** [September 16, 2024, 11:45am UTC](https://discourse.slicer.org/t/cbcttoothsegmentation-how-to-fix-torch-load-with-weights-only-false/38398 "2024-09-16T11:45:46Z")

</div>

When I work with the extension extensions-manager CBCTToothSegmentation, the below error occur. Which file do I need to fix and how to do with it. It seems to be a python problem and I searched some solution but it did n…

---

## [When we should resample and resize?](https://discourse.slicer.org/t/when-we-should-resample-and-resize/38378)

<div class="topic-metadata">

**Author:** [@sajad\_amiri](https://discourse.slicer.org/u/sajad_amiri)\
**Replies:** 4\
**Last updated:** [September 16, 2024, 1:23am UTC](https://discourse.slicer.org/t/when-we-should-resample-and-resize/38378 "2024-09-16T01:23:38Z")

</div>

I was working with a dataset (https://www.cancerimagingarchive.net/collection/prostate-mri-us-biopsy/?swpmtx=a4e8067aeba864db9b1451b15a61997c&swpmtxnonce=4475fb572b), and while annotating with both T2 and DWI, the segmen…

---

## [Extracting dose to target volume and organs at risk from MR images](https://discourse.slicer.org/t/extracting-dose-to-target-volume-and-organs-at-risk-from-mr-images/38391)

<div class="topic-metadata">

**Author:** [@Olubunmi\_Aregbe](https://discourse.slicer.org/u/Olubunmi_Aregbe)\
**Replies:** 0\
**Last updated:** [September 15, 2024, 11:24am UTC](https://discourse.slicer.org/t/extracting-dose-to-target-volume-and-organs-at-risk-from-mr-images/38391 "2024-09-15T11:24:24Z")

</div>

How can I extract information such as “Dose to target volume (HRCTV), dose to organs at risk (bladder, rectum and sigmoid)” from uploaded MR images that were already segmented and used for patient treatment.

---

## [Combining two different scan types](https://discourse.slicer.org/t/combining-two-different-scan-types/17153)

<div class="topic-metadata">

**Author:** [@arif](https://discourse.slicer.org/u/arif)\
**Replies:** 6\
**Last updated:** [September 15, 2024, 1:05pm UTC](https://discourse.slicer.org/t/combining-two-different-scan-types/17153 "2024-09-15T13:05:44Z")

</div>

Hi everyone! Is it possible to combine two different scan types(PET/CT and MpMRI) in one dicom file? Have a nice day.

---

## [Fusion MRI and PET](https://discourse.slicer.org/t/fusion-mri-and-pet/38388)

<div class="topic-metadata">

**Author:** [@Pavel\_Pakhomov](https://discourse.slicer.org/u/Pavel_Pakhomov)\
**Replies:** 0\
**Last updated:** [September 15, 2024, 5:25am UTC](https://discourse.slicer.org/t/fusion-mri-and-pet/38388 "2024-09-15T05:25:20Z")

</div>

Hello? i’m new user ) I have problems )) I have mri dicom (pelvis) and PET/CT FDG-psma scans I need to fuse T2 iso with PET images, and that save this to dicom for US-navigation; i used landmark registration, and i saw n…

---

## [LoG filter Size and best bin size calculation](https://discourse.slicer.org/t/log-filter-size-and-best-bin-size-calculation/38377)

<div class="topic-metadata">

**Author:** [@sajad\_amiri](https://discourse.slicer.org/u/sajad_amiri)\
**Replies:** 0\
**Last updated:** [September 14, 2024, 1:39pm UTC](https://discourse.slicer.org/t/log-filter-size-and-best-bin-size-calculation/38377 "2024-09-14T13:39:54Z")

</div>

how we can calculate the size of LoG and best Bin Size ?in MRI our particullary for our dataset,

---

## [Plotting labels](https://discourse.slicer.org/t/plotting-labels/38370)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 0\
**Last updated:** [September 13, 2024, 11:44pm UTC](https://discourse.slicer.org/t/plotting-labels/38370 "2024-09-13T23:44:40Z")

</div>

If I plot a data series, I can hover over and see the label associated with the series (in this case it is set to SubjectID). I want to make this visible for all data points without having to hover over. I don’t think i…

---

## [Help using extension Breast DCE-MRI FTV](https://discourse.slicer.org/t/help-using-extension-breast-dce-mri-ftv/37237)

<div class="topic-metadata">

**Author:** [@do\_huy](https://discourse.slicer.org/u/do_huy)\
**Replies:** 5\
**Last updated:** [September 13, 2024, 11:05pm UTC](https://discourse.slicer.org/t/help-using-extension-breast-dce-mri-ftv/37237 "2024-09-13T23:05:59Z")

</div>

Operating system: windows 11 Slicer version: 5.6.2 Expected behavior: selecting sequences from loaded DICOM Actual behavior: When i chose the “Manual” option, first i get this error: FileNotFoundError: \[WinErr…

---

## [How to create a brain mask from MRI T2 (30 MRI total)](https://discourse.slicer.org/t/how-to-create-a-brain-mask-from-mri-t2-30-mri-total/38338)

<div class="topic-metadata">

**Author:** [@jegiron](https://discourse.slicer.org/u/jegiron)\
**Replies:** 3\
**Last updated:** [September 13, 2024, 7:36pm UTC](https://discourse.slicer.org/t/how-to-create-a-brain-mask-from-mri-t2-30-mri-total/38338 "2024-09-13T19:36:55Z")

</div>

I have MRI T2 weighed images and need to create a mask to remove skull and others. I have a total of 30 MRI models and need ultimately need to measure infarct volume percentage. I also need to do spatial normalization. H…

---

## [One control point out of many is read incorrectly into Slicer](https://discourse.slicer.org/t/one-control-point-out-of-many-is-read-incorrectly-into-slicer/38369)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 2\
**Last updated:** [September 13, 2024, 7:03pm UTC](https://discourse.slicer.org/t/one-control-point-out-of-many-is-read-incorrectly-into-slicer/38369 "2024-09-13T19:03:59Z")

</div>

I have this mrk.json file that generated from our SlicerMorphR package. When this file is loaded into the scene, control point 121 (alignedPoints-121) points gets undefined (see the screenshot below). But it is defined …

---

## [How can extend the trajectories in volume reslice driver (IGT)](https://discourse.slicer.org/t/how-can-extend-the-trajectories-in-volume-reslice-driver-igt/38359)

<div class="topic-metadata">

**Author:** [@Hossam\_Elkady](https://discourse.slicer.org/u/Hossam_Elkady)\
**Replies:** 3\
**Last updated:** [September 13, 2024, 12:39pm UTC](https://discourse.slicer.org/t/how-can-extend-the-trajectories-in-volume-reslice-driver-igt/38359 "2024-09-13T12:39:09Z")

</div>

I would like to try to extend a line from the end of a stylus tip modeled by a needle in order to see the trajectory that is planned by the stylus at that angle in the 3 views of the scans (red , green , yellow windows)

---

## [Computing intersection between volume and segmentation](https://discourse.slicer.org/t/computing-intersection-between-volume-and-segmentation/38334)

<div class="topic-metadata">

**Author:** [@Josh\_Gregory](https://discourse.slicer.org/u/Josh_Gregory)\
**Replies:** 4\
**Last updated:** [September 13, 2024, 8:28am UTC](https://discourse.slicer.org/t/computing-intersection-between-volume-and-segmentation/38334 "2024-09-13T08:28:13Z")

</div>

Hi everyone, I am dealing with some skull-stripped CTA scans that I have imported as a Volume and the corresponding segmentations imported as a Segmentation. I have some parts of the segmentation that do not map to the …

---

## [SlicerRT DRR generation module does not work well on macbook](https://discourse.slicer.org/t/slicerrt-drr-generation-module-does-not-work-well-on-macbook/26022)

<div class="topic-metadata">

**Author:** [@suzume](https://discourse.slicer.org/u/suzume)\
**Replies:** 10\
**Last updated:** [September 13, 2024, 8:17am UTC](https://discourse.slicer.org/t/slicerrt-drr-generation-module-does-not-work-well-on-macbook/26022 "2024-09-13T08:17:28Z")

</div>

Operating system:mac os 13.0 Slicer version:5.0.3 Expected behavior: I want to use the “DRR generation” module in plastimatch. However, the generation results are always black. All of the setting parameters are default…

---

## [Automating 3D Model Animations](https://discourse.slicer.org/t/automating-3d-model-animations/38262)

<div class="topic-metadata">

**Author:** [@Miri\_Trope](https://discourse.slicer.org/u/Miri_Trope)\
**Replies:** 14\
**Last updated:** [September 12, 2024, 2:52pm UTC](https://discourse.slicer.org/t/automating-3d-model-animations/38262 "2024-09-12T14:52:19Z")

</div>

Hi all, I am looking to create an automated animation (video) that includes rotating a model around a tumor at a 45-degree angle, adjusting the opacity of various volumes in the scene, inserting titles during the video, …

---

## [MRI/CT registration](https://discourse.slicer.org/t/mri-ct-registration/38217)

<div class="topic-metadata">

**Author:** [@Kowsar\_Sheikhi](https://discourse.slicer.org/u/Kowsar_Sheikhi)\
**Replies:** 11\
**Last updated:** [September 12, 2024, 1:45pm UTC](https://discourse.slicer.org/t/mri-ct-registration/38217 "2024-09-12T13:45:36Z")

</div>

Hi, Do you have any suggestions for MRI/CT image registration? Both images are in DICOM format and have been cropped to focus on the ROI. I have tried using the Brain and Elastix methods, but they didn’t work well (per…

[Previous page](https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=73)

[Next page](https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=75)