# Support

**URL:** https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=66

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

**Page:** 67

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## [Define a preset for volume when using virtual endoscopy](https://discourse.slicer.org/t/define-a-preset-for-volume-when-using-virtual-endoscopy/40163)

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**Author:** [@dbtruong](https://discourse.slicer.org/u/dbtruong)\
**Replies:** 0\
**Last updated:** [November 13, 2024, 3:11am UTC](https://discourse.slicer.org/t/define-a-preset-for-volume-when-using-virtual-endoscopy/40163 "2024-11-13T03:11:16Z")

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Hello, Is it necessary to define a volume preset when using virtual endoscopy? Because the preset I’m using doesn’t show the tissues inside the human body very clearly.

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## [Failed to use the sample dataset (sample\_ct.nii )](https://discourse.slicer.org/t/failed-to-use-the-sample-dataset-sample-ct-nii/40156)

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**Author:** [@bkasmai](https://discourse.slicer.org/u/bkasmai)\
**Replies:** 2\
**Last updated:** [November 12, 2024, 6:58pm UTC](https://discourse.slicer.org/t/failed-to-use-the-sample-dataset-sample-ct-nii/40156 "2024-11-12T18:58:32Z")

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Loaded a sample ct niftii dataset (example\_ct), clicked on Apply and selected Fast(~2 minutes). I get the following error: Traceback (most recent call last): File "C:\\Users\\Bahman\\AppData\\Local\\slicer.org\\Slicer 5.6.2…

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## [Resizing segmentation area](https://discourse.slicer.org/t/resizing-segmentation-area/40134)

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**Author:** [@mohammad\_jafari](https://discourse.slicer.org/u/mohammad_jafari)\
**Replies:** 2\
**Last updated:** [November 12, 2024, 6:26pm UTC](https://discourse.slicer.org/t/resizing-segmentation-area/40134 "2024-11-12T18:26:27Z")

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Hello everyone thanks for this great community, i recently labeled segmentations for a deep learning project via 3d slicer segment editor module ,the original size of the reference volume is 256x256x175 each slice has 25…

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## [Combining MR and CT sequences](https://discourse.slicer.org/t/combining-mr-and-ct-sequences/39590)

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**Author:** [@MaxVs](https://discourse.slicer.org/u/MaxVs)\
**Replies:** 2\
**Last updated:** [November 12, 2024, 5:52pm UTC](https://discourse.slicer.org/t/combining-mr-and-ct-sequences/39590 "2024-11-12T17:52:58Z")

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Hi everyone. I’m struggling with a one problem. I have patient CT and MRI. I would like to render different structures on CT and different on MRI, then I would like to combine both models and here my problem appears. …

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## [Cleaning Function Surface Toolbox does not handle 0 rea faces/duplicate edges](https://discourse.slicer.org/t/cleaning-function-surface-toolbox-does-not-handle-0-rea-faces-duplicate-edges/40124)

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**Author:** [@evaherbst](https://discourse.slicer.org/u/evaherbst)\
**Replies:** 5\
**Last updated:** [November 12, 2024, 1:38pm UTC](https://discourse.slicer.org/t/cleaning-function-surface-toolbox-does-not-handle-0-rea-faces-duplicate-edges/40124 "2024-11-12T13:38:14Z")

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Hello, I noticed that the clean function in the Surface Toolbox does not handle duplicate edges ie 0 area faces. Therefore it does not completely fix non manifold meshes. Here you can see a mesh that I cleaned with th…

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## [Digitally Reconstructed Radiograph Using Models Instead of Volumes](https://discourse.slicer.org/t/digitally-reconstructed-radiograph-using-models-instead-of-volumes/3309)

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**Author:** [@\_jmichael](https://discourse.slicer.org/u/_jmichael)\
**Replies:** 6\
**Last updated:** [November 12, 2024, 11:42am UTC](https://discourse.slicer.org/t/digitally-reconstructed-radiograph-using-models-instead-of-volumes/3309 "2024-11-12T11:42:17Z")

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Is it possible using Slicer to create a simulated x-ray image, similar to a digitally reconstructed radiograph, that takes 3D models as its input rather than volumetric data (i.e. CT scans)? I’m envisioning a scenario in…

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## [Request for Creating and Visualizing Coordinate Systems](https://discourse.slicer.org/t/request-for-creating-and-visualizing-coordinate-systems/40119)

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**Author:** [@evaherbst](https://discourse.slicer.org/u/evaherbst)\
**Replies:** 4\
**Last updated:** [November 12, 2024, 11:27am UTC](https://discourse.slicer.org/t/request-for-creating-and-visualizing-coordinate-systems/40119 "2024-11-12T11:27:30Z")

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Hello, Would it be possible to introduce rendering for planes (for use in showing local coordinate systems) that looks like the interactive handles for planes, but does NOT enable interaction to prevent accidental chang…

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## [Cross-sectional area of muscle on CT Scan](https://discourse.slicer.org/t/cross-sectional-area-of-muscle-on-ct-scan/40144)

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**Author:** [@juanslo](https://discourse.slicer.org/u/juanslo)\
**Replies:** 0\
**Last updated:** [November 12, 2024, 10:48am UTC](https://discourse.slicer.org/t/cross-sectional-area-of-muscle-on-ct-scan/40144 "2024-11-12T10:48:52Z")

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“I need to calculate the cross-sectional area of muscular tissue in my CT scans. What would be the best approach?”

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## [How to get segment details for a specific frame](https://discourse.slicer.org/t/how-to-get-segment-details-for-a-specific-frame/40009)

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**Author:** [@maniron](https://discourse.slicer.org/u/maniron)\
**Replies:** 13\
**Last updated:** [November 12, 2024, 5:33am UTC](https://discourse.slicer.org/t/how-to-get-segment-details-for-a-specific-frame/40009 "2024-11-12T05:33:58Z")

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Hi, I am trying to get the number of segmentations done for a frame using python. I am trying this out using the following code segmentationNodeName = “Segmentation” segmentationNode = slicer.mrmlScene.GetFirstNodeBy…

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## [Slice interval advice](https://discourse.slicer.org/t/slice-interval-advice/40128)

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**Author:** [@SuperMatt](https://discourse.slicer.org/u/SuperMatt)\
**Replies:** 2\
**Last updated:** [November 11, 2024, 9:46pm UTC](https://discourse.slicer.org/t/slice-interval-advice/40128 "2024-11-11T21:46:02Z")

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Hi, I’m a novice user of 3D slicer without a medical radiations background (other science). I have a CT scan collected on a Canon Vitrea machine but when I import into 3D slicer the dimensions appear incorrect for the c…

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## [Total segmentator not loading](https://discourse.slicer.org/t/total-segmentator-not-loading/40129)

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**Author:** [@john.barriga](https://discourse.slicer.org/u/john.barriga)\
**Replies:** 1\
**Last updated:** [November 11, 2024, 6:36pm UTC](https://discourse.slicer.org/t/total-segmentator-not-loading/40129 "2024-11-11T18:36:10Z")

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I’ve have been trying to load total segmentator for 4 hours and even multiple computers but I keep getting this error and it is so frustrating : Traceback (most recent call last): File “C:\\Users\\Johnd\\AppData\\Local…

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## [USD support in Slicer](https://discourse.slicer.org/t/usd-support-in-slicer/40115)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 4\
**Last updated:** [November 11, 2024, 5:18pm UTC](https://discourse.slicer.org/t/usd-support-in-slicer/40115 "2024-11-11T17:18:22Z")

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There was some talk about USD format support in Slicer (e.g., Open source Human Anatomy Atlas - #7 by pieper) Was there any movement towards it?

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## [CurveCut models have same number of points as original mesh](https://discourse.slicer.org/t/curvecut-models-have-same-number-of-points-as-original-mesh/40120)

<div class="topic-metadata">

**Author:** [@evaherbst](https://discourse.slicer.org/u/evaherbst)\
**Replies:** 7\
**Last updated:** [November 11, 2024, 3:42pm UTC](https://discourse.slicer.org/t/curvecut-models-have-same-number-of-points-as-original-mesh/40120 "2024-11-11T15:42:33Z")

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Hello, After using a curve cut on a 3D model, the resulting output model mesh looks fine, but when I check th point number in the output model, it still has the original number of points. Same if I save as .vtk and reim…

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## [DICOM loading - Could not load: Unnamed Series as a Scalar Volume](https://discourse.slicer.org/t/dicom-loading-could-not-load-unnamed-series-as-a-scalar-volume/40114)

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**Author:** [@mhal0018](https://discourse.slicer.org/u/mhal0018)\
**Replies:** 1\
**Last updated:** [November 11, 2024, 1:55pm UTC](https://discourse.slicer.org/t/dicom-loading-could-not-load-unnamed-series-as-a-scalar-volume/40114 "2024-11-11T13:55:15Z")

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Hi there. I’m trying to load DICOM files downloaded from the Aneurisk database, specifically patient C0051 (AneuriskWeb). I’m getting the ‘Could not load: Unnamed Series as a Scalar Volume’ error, and having a look at …

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## [Access to List of Segmented Organs](https://discourse.slicer.org/t/access-to-list-of-segmented-organs/40080)

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**Author:** [@Filippo\_Parronchi](https://discourse.slicer.org/u/Filippo_Parronchi)\
**Replies:** 3\
**Last updated:** [November 11, 2024, 1:40am UTC](https://discourse.slicer.org/t/access-to-list-of-segmented-organs/40080 "2024-11-11T01:40:54Z")

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Hello everyone. After applying the “totalSegmentator” module to my volume, I obtain a list of all segmented structures with their respective names, as shown in the figure. I would like to know how, through a Python scri…

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## [Freezing on Mac M2](https://discourse.slicer.org/t/freezing-on-mac-m2/40099)

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**Author:** [@Karan\_Gh](https://discourse.slicer.org/u/Karan_Gh)\
**Replies:** 2\
**Last updated:** [November 10, 2024, 10:06pm UTC](https://discourse.slicer.org/t/freezing-on-mac-m2/40099 "2024-11-10T22:06:02Z")

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why slicer version 5.6.2 freezing on mac M2 by segmentation

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## [32-bit for 3D Slicer](https://discourse.slicer.org/t/32-bit-for-3d-slicer/40105)

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**Author:** [@Ara\_connect](https://discourse.slicer.org/u/Ara_connect)\
**Replies:** 1\
**Last updated:** [November 10, 2024, 3:36pm UTC](https://discourse.slicer.org/t/32-bit-for-3d-slicer/40105 "2024-11-10T15:36:56Z")

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Hello everyone, I’m writing a Python script for 3D Slicer that needs to be executed in a 32-bit Python version. However, as far as I know, there is no 32-bit version of 3D Slicer. Does anyone have any ideas on how I co…

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## [Question about the minor and major axes' length formulas](https://discourse.slicer.org/t/question-about-the-minor-and-major-axes-length-formulas/39713)

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**Author:** [@Steven](https://discourse.slicer.org/u/Steven)\
**Replies:** 0\
**Last updated:** [October 15, 2024, 7:24pm UTC](https://discourse.slicer.org/t/question-about-the-minor-and-major-axes-length-formulas/39713 "2024-10-15T19:24:11Z")

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Hello, I have a question about the elliptical features minor and major axes’ length. The formulas given in the Pyradiomics documentation are respectively 4sqrt(lambda\_major) and 4sqrt(lambda\_minor), with lambda\_major and…

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## [KidneyStoneCalculator](https://discourse.slicer.org/t/kidneystonecalculator/40005)

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**Author:** [@ALAN\_ROMAO\_SILVA](https://discourse.slicer.org/u/ALAN_ROMAO_SILVA)\
**Replies:** 0\
**Last updated:** [November 4, 2024, 1:03am UTC](https://discourse.slicer.org/t/kidneystonecalculator/40005 "2024-11-04T01:03:19Z")

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I’m trying to use the KidneyStoneCalculator extension, but my 3D view has nothing and Time of lithotripsy has nothing too. With this error log: 1 - vtkMRMLTableNode::GetCellText failed: invalid column index -1 2 - Ext…

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## [How to Resolve this error?](https://discourse.slicer.org/t/how-to-resolve-this-error/40091)

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**Author:** [@Bhavithasrik](https://discourse.slicer.org/u/Bhavithasrik)\
**Replies:** 1\
**Last updated:** [November 10, 2024, 4:36am UTC](https://discourse.slicer.org/t/how-to-resolve-this-error/40091 "2024-11-10T04:36:24Z")

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I’m facing this issue multiple times. Whenever I try to draw the segmented area. Please help me out

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## [Older preview version](https://discourse.slicer.org/t/older-preview-version/40097)

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**Author:** [@JaredAmudeo](https://discourse.slicer.org/u/JaredAmudeo)\
**Replies:** 2\
**Last updated:** [November 9, 2024, 10:57pm UTC](https://discourse.slicer.org/t/older-preview-version/40097 "2024-11-09T22:57:54Z")

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Hello, could someone help me? I need to be able to download version 5.7.0-2024-09-05 of Slicer, as I am splitting the work between two different devices and would like both to have the same version. Thank you in advance. …

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## [Resampling using linear Transform](https://discourse.slicer.org/t/resampling-using-linear-transform/40087)

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**Author:** [@racctor](https://discourse.slicer.org/u/racctor)\
**Replies:** 1\
**Last updated:** [November 9, 2024, 3:49pm UTC](https://discourse.slicer.org/t/resampling-using-linear-transform/40087 "2024-11-09T15:49:25Z")

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Hello, I tried a few variations now, but nothing seems to work. I have multiple series loaded. One of those is my Series “10”. Loading it, I see that the skull is not properly rotated. The right side is more forward and…

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## [CT to CBCT registration and structure sets](https://discourse.slicer.org/t/ct-to-cbct-registration-and-structure-sets/40059)

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**Author:** [@tenzin\_kunkyab](https://discourse.slicer.org/u/tenzin_kunkyab)\
**Replies:** 5\
**Last updated:** [November 9, 2024, 1:32pm UTC](https://discourse.slicer.org/t/ct-to-cbct-registration-and-structure-sets/40059 "2024-11-09T13:32:48Z")

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Hi Developers, I want to get structure sets/contour of the CBCT from planning CT (structure set for planning CT is available). First I want to register the planning CT to CBCT and then use the parameter to deform the st…

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## [How to set parameters in "MaskScalarVolume" module via console](https://discourse.slicer.org/t/how-to-set-parameters-in-maskscalarvolume-module-via-console/40082)

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**Author:** [@Filippo\_Parronchi](https://discourse.slicer.org/u/Filippo_Parronchi)\
**Replies:** 0\
**Last updated:** [November 8, 2024, 4:49pm UTC](https://discourse.slicer.org/t/how-to-set-parameters-in-maskscalarvolume-module-via-console/40082 "2024-11-08T16:49:34Z")

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Hello, I am trying to run the “MaskScalarVolume” CLI module via Python console. With the lines of code shown in the figure, I am able to open the module interface and execute it (apply). I would like to know how to modif…

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## [Javascript functionality within Jupyter notebook from IPython.display](https://discourse.slicer.org/t/javascript-functionality-within-jupyter-notebook-from-ipython-display/40075)

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**Author:** [@Sharada](https://discourse.slicer.org/u/Sharada)\
**Replies:** 0\
**Last updated:** [November 7, 2024, 10:10pm UTC](https://discourse.slicer.org/t/javascript-functionality-within-jupyter-notebook-from-ipython-display/40075 "2024-11-07T22:10:22Z")

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Hello, I have a process wherein consecutive cells need to be executed in a jupyter notebook that interacts with Slicer (using SlicerJupyter extension). I basically have something like from IPython.display import Javas…

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## [VTK file "coloring"](https://discourse.slicer.org/t/vtk-file-coloring/40073)

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**Author:** [@Bor\_Antolic](https://discourse.slicer.org/u/Bor_Antolic)\
**Replies:** 0\
**Last updated:** [November 7, 2024, 7:07pm UTC](https://discourse.slicer.org/t/vtk-file-coloring/40073 "2024-11-07T19:07:29Z")

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With the use of model-to-model distance module I created a model that shows the thickness of left ventricular wall. I exported this file as a vtk. If I open this file in Paraview I have to always manually adjust the dat…

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## [Messed up semi-landmark names after resampling](https://discourse.slicer.org/t/messed-up-semi-landmark-names-after-resampling/39978)

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**Author:** [@Ruiqi-CUB](https://discourse.slicer.org/u/Ruiqi-CUB)\
**Replies:** 3\
**Last updated:** [November 7, 2024, 6:27pm UTC](https://discourse.slicer.org/t/messed-up-semi-landmark-names-after-resampling/39978 "2024-11-07T18:27:37Z")

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Hi all, I have a few CT scannings of shells, and I have reconstructed 3D meshes in stl format. I would like to use semi-landmarks to capture some curves, the do a PCA in R with geomorph. My slicer version is 5.6.2. I us…

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## [How 3DSlicer compute image origin and IJK to RAS direction matrix.](https://discourse.slicer.org/t/how-3dslicer-compute-image-origin-and-ijk-to-ras-direction-matrix/39981)

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**Author:** [@fabiogatelli](https://discourse.slicer.org/u/fabiogatelli)\
**Replies:** 2\
**Last updated:** [November 7, 2024, 8:34am UTC](https://discourse.slicer.org/t/how-3dslicer-compute-image-origin-and-ijk-to-ras-direction-matrix/39981 "2024-11-07T08:34:58Z")

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Hello everybody, this is my first topic and I have some trouble reasoning with 3Dslicer DICOM parameters extraction. I start from the beginnig. Due to research activity, my aim is to write down a python code (without sli…

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## [Delete control points within a ROI](https://discourse.slicer.org/t/delete-control-points-within-a-roi/40037)

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**Author:** [@bserrano](https://discourse.slicer.org/u/bserrano)\
**Replies:** 5\
**Last updated:** [November 7, 2024, 8:16am UTC](https://discourse.slicer.org/t/delete-control-points-within-a-roi/40037 "2024-11-07T08:16:48Z")

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Hi all, I would like to develop a Python script that allows the deletion of multiple control points within a ROI. Specifically, it would be great to mimic the behavior of the Scissors tool from the Segment Editor module…

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## [Radiomics analysis](https://discourse.slicer.org/t/radiomics-analysis/40052)

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**Author:** [@Shai](https://discourse.slicer.org/u/Shai)\
**Replies:** 0\
**Last updated:** [November 6, 2024, 1:40pm UTC](https://discourse.slicer.org/t/radiomics-analysis/40052 "2024-11-06T13:40:48Z")

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Hi , I mark several ROIs on the segmentation editor, In the radiomics extension, the anlysis is being done to all ROIs, though all the values in the output table are the same for all ROIs, which probably should not be…

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