# Community

**URL:** https://discourse.slicer.org/c/community/12.md?no_subcategories=false&page=12

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

**Page:** 13

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## [2024.04.16 Weekly Meeting](https://discourse.slicer.org/t/2024-04-16-weekly-meeting/35507)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 2\
**Last updated:** [April 16, 2024, 1:59pm UTC](https://discourse.slicer.org/t/2024-04-16-weekly-meeting/35507 "2024-04-16T13:59:10Z")

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Tomorrow, 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 thread to…

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## [3D modeling pathway for printing](https://discourse.slicer.org/t/3d-modeling-pathway-for-printing/35199)

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**Author:** [@Mark\_Ryan](https://discourse.slicer.org/u/Mark_Ryan)\
**Replies:** 4\
**Last updated:** [April 11, 2024, 6:14am UTC](https://discourse.slicer.org/t/3d-modeling-pathway-for-printing/35199 "2024-04-11T06:14:09Z")

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Just wanted to post my workflow for a recent case I prepared for one of my partners. It’s a set of conjoined twins. The AI applications obviously weren’t much help, but was able to segment the skeleton, the two hearts, t…

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## [2024.04.09 Weekly Meeting](https://discourse.slicer.org/t/2024-04-09-weekly-meeting/35369)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 1\
**Last updated:** [April 9, 2024, 10:55am UTC](https://discourse.slicer.org/t/2024-04-09-weekly-meeting/35369 "2024-04-09T10:55:18Z")

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Tomorrow, 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 thread to…

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## [Centerline calculation warning (vmtkcenterlineviewer)](https://discourse.slicer.org/t/centerline-calculation-warning-vmtkcenterlineviewer/34573)

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**Author:** [@MicheleIng](https://discourse.slicer.org/u/MicheleIng)\
**Replies:** 3\
**Last updated:** [April 9, 2024, 3:36am UTC](https://discourse.slicer.org/t/centerline-calculation-warning-vmtkcenterlineviewer/34573 "2024-04-09T03:36:04Z")

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Once I import the stl file (the stl file is a vessel that has two bifurcations), vmtk doesn’t generate centerlines for me but it generates this warning message. Warning: In …\\vtkVmtk\\ComputationalGeometry\\vtkvmtkSteepe…

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## [How to select best parameter setting? (bin width)](https://discourse.slicer.org/t/how-to-select-best-parameter-setting-bin-width/21877)

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**Author:** [@akshay\_pillai](https://discourse.slicer.org/u/akshay_pillai)\
**Replies:** 2\
**Last updated:** [April 6, 2024, 2:44am UTC](https://discourse.slicer.org/t/how-to-select-best-parameter-setting-bin-width/21877 "2024-04-06T02:44:40Z")

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I am new to pyradiomics. I want to extract feature from a ct scan of lungs. I want to know what the best parameter settings are to extract my feature. Every time I use a different binwidth I get different results. I just…

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## [Get the bifurcations points from a skeleton (network model)](https://discourse.slicer.org/t/get-the-bifurcations-points-from-a-skeleton-network-model/35292)

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**Author:** [@Antoine1](https://discourse.slicer.org/u/Antoine1)\
**Replies:** 0\
**Last updated:** [April 4, 2024, 3:51pm UTC](https://discourse.slicer.org/t/get-the-bifurcations-points-from-a-skeleton-network-model/35292 "2024-04-04T15:51:29Z")

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Hello everyone, I’m currently working on a project with vessels segmentation. So I already manage to get my vessels and from that I put it in 3D Slicer and used the VMTK modules “Extract Centerline” to get the Centerlin…

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## [Centerline smoothing by vmtkCenterlineSmoothing does not work](https://discourse.slicer.org/t/centerline-smoothing-by-vmtkcenterlinesmoothing-does-not-work/35200)

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**Author:** [@tomo-akiyama](https://discourse.slicer.org/u/tomo-akiyama)\
**Replies:** 4\
**Last updated:** [April 4, 2024, 1:44pm UTC](https://discourse.slicer.org/t/centerline-smoothing-by-vmtkcenterlinesmoothing-does-not-work/35200 "2024-04-04T13:44:20Z")

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Hello, everyone, I’m interested in smoothing the centerlines of the cerebral arteries. Following the parameters recommended by “Kjeldsberg et al. BioMedical Engineering OnLine (2021) Automated landmarking of bends in v…

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## [Regarding definition of mean curvature](https://discourse.slicer.org/t/regarding-definition-of-mean-curvature/32326)

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**Author:** [@Mudrika](https://discourse.slicer.org/u/Mudrika)\
**Replies:** 4\
**Last updated:** [April 3, 2024, 10:35pm UTC](https://discourse.slicer.org/t/regarding-definition-of-mean-curvature/32326 "2024-04-03T22:35:20Z")

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Hello everyone! I am extracting a centerline model for a geometry. By using the ‘markups’, I am drawing curves on the selected arteries and calculating geometric parameters like length and mean curvature. As we know, th…

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## [2024.04.02 Weekly Meeting](https://discourse.slicer.org/t/2024-04-02-weekly-meeting/35204)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 4\
**Last updated:** [April 2, 2024, 11:28pm UTC](https://discourse.slicer.org/t/2024-04-02-weekly-meeting/35204 "2024-04-02T23:28:41Z")

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Tomorrow, 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 thread to…

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## [Colliding fronts under-segment where the vessel bends a lot](https://discourse.slicer.org/t/colliding-fronts-under-segment-where-the-vessel-bends-a-lot/16628)

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**Author:** [@Dave\_Fang](https://discourse.slicer.org/u/Dave_Fang)\
**Replies:** 5\
**Last updated:** [April 1, 2024, 3:52pm UTC](https://discourse.slicer.org/t/colliding-fronts-under-segment-where-the-vessel-bends-a-lot/16628 "2024-04-01T15:52:24Z")

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hi， guys, I use colliding fronts to initialize the segementaion on 3D DSA of intracranial blood vessels. But I found there was serious under-seg where the vessel bends a lot, Anyone else know the solution to the pro…

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## [General Thank You](https://discourse.slicer.org/t/general-thank-you/35082)

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**Author:** [@kilpatricbilly](https://discourse.slicer.org/u/kilpatricbilly)\
**Replies:** 0\
**Last updated:** [March 26, 2024, 2:21am UTC](https://discourse.slicer.org/t/general-thank-you/35082 "2024-03-26T02:21:01Z")

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THANK YOU, this “free product” allowed me to view my son’s PET scan results and allowed me to learn where the cancers are that are terminating his young life. This is a great product!

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## [Lumbar Spine PCA](https://discourse.slicer.org/t/lumbar-spine-pca/35170)

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**Author:** [@LeidyMoraV](https://discourse.slicer.org/u/LeidyMoraV)\
**Replies:** 3\
**Last updated:** [March 29, 2024, 8:04pm UTC](https://discourse.slicer.org/t/lumbar-spine-pca/35170 "2024-03-29T20:04:08Z")

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Hello! I’m new to Slicer and I need to use Principal Component Analysis (PCA) to get the mean shape of a dataset of L4 vertebrae, I’ve tried using SlicerSALT, and the topology of the files seem to be consistent for Circl…

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## [2024.03.26 Weekly Meeting](https://discourse.slicer.org/t/2024-03-26-weekly-meeting/35074)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 1\
**Last updated:** [March 26, 2024, 3:00pm UTC](https://discourse.slicer.org/t/2024-03-26-weekly-meeting/35074 "2024-03-26T15:00:50Z")

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Tomorrow, 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 thread to…

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## [2024.03.19 Weekly Meeting](https://discourse.slicer.org/t/2024-03-19-weekly-meeting/34964)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 3\
**Last updated:** [March 19, 2024, 5:58pm UTC](https://discourse.slicer.org/t/2024-03-19-weekly-meeting/34964 "2024-03-19T17:58:04Z")

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Tomorrow, 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 thread to…

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## [Presents the 'Brazilian Fauna Virtual Anatomic Collection'](https://discourse.slicer.org/t/presents-the-brazilian-fauna-virtual-anatomic-collection/34782)

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**Author:** [@Rafael\_V\_Monteiro](https://discourse.slicer.org/u/Rafael_V_Monteiro)\
**Replies:** 17\
**Last updated:** [March 13, 2024, 1:09pm UTC](https://discourse.slicer.org/t/presents-the-brazilian-fauna-virtual-anatomic-collection/34782 "2024-03-13T13:09:40Z")

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Operating system: Ubuntu 22.04.3 LTS (GNU/Linux 6.5.0-21-generic x86\_64) Slicer version: 5.6.0 Greetings Slicer community! I am here to share the success of using Slicer3D to build our Brazilian Fauna Virtual Anatomic…

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## [2024.03.12 Weekly Meeting](https://discourse.slicer.org/t/2024-03-12-weekly-meeting/34830)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [March 11, 2024, 5:44pm UTC](https://discourse.slicer.org/t/2024-03-12-weekly-meeting/34830 "2024-03-11T17:44:49Z")

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Tomorrow, 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: Extension dashboard status P…

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## [Exit code to terminate SPHARM-PDM upon completion in CLI?](https://discourse.slicer.org/t/exit-code-to-terminate-spharm-pdm-upon-completion-in-cli/34803)

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**Author:** [@kmadi](https://discourse.slicer.org/u/kmadi)\
**Replies:** 0\
**Last updated:** [March 9, 2024, 5:20pm UTC](https://discourse.slicer.org/t/exit-code-to-terminate-spharm-pdm-upon-completion-in-cli/34803 "2024-03-09T17:20:12Z")

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Hello! I’ve spoken to a couple of the developers in person but I figured I’d ask here for a wider reach. I’m currently using a python script to execute the SPHARM-PDM module in a command line interface (CLI) via python’…

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## [Regarding the issue of different rendering results in various versions:](https://discourse.slicer.org/t/regarding-the-issue-of-different-rendering-results-in-various-versions/34794)

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**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 2\
**Last updated:** [March 9, 2024, 12:56pm UTC](https://discourse.slicer.org/t/regarding-the-issue-of-different-rendering-results-in-various-versions/34794 "2024-03-09T12:56:31Z")

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Why do the rendering results differ between recent new versions and stable versions? In fact, the rendering in the previous versions was better. Has the renderer been redesigned in the new version?

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## [Trimming normal to boundary](https://discourse.slicer.org/t/trimming-normal-to-boundary/34791)

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**Author:** [@Beth\_Thompson](https://discourse.slicer.org/u/Beth_Thompson)\
**Replies:** 2\
**Last updated:** [March 8, 2024, 8:49pm UTC](https://discourse.slicer.org/t/trimming-normal-to-boundary/34791 "2024-03-08T20:49:08Z")

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Hi, I have a 3D model of a pulmonary artery generated in SimVascular. I am trying to add extensions to it, but first I need to clip the ends to open it. I would like to trim the ends just the tiniest bit to open them, a…

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## [2024.03.05 Weekly Meeting](https://discourse.slicer.org/t/2024-03-05-weekly-meeting/34699)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [March 4, 2024, 4:27pm UTC](https://discourse.slicer.org/t/2024-03-05-weekly-meeting/34699 "2024-03-04T16:27:46Z")

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Tomorrow, 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: Extension dashboard status P…

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## [DTI\_ALPS x,y,z-projection of mean diffusivity](https://discourse.slicer.org/t/dti-alps-x-y-z-projection-of-mean-diffusivity/29578)

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**Author:** [@JSteinJ](https://discourse.slicer.org/u/JSteinJ)\
**Replies:** 10\
**Last updated:** [March 4, 2024, 3:02pm UTC](https://discourse.slicer.org/t/dti-alps-x-y-z-projection-of-mean-diffusivity/29578 "2024-03-04T15:02:09Z")

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terribly sorry me again, I forgot that I need x,y,z projections of MeanDiffusivity to. How can I calculate it from the maps in DiffusionTensorScalarMeasurement provided…? thank you, jürgen

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## [SPHARM-PDM error: "Not enough points; cannot solve SPHARM coefficients."](https://discourse.slicer.org/t/spharm-pdm-error-not-enough-points-cannot-solve-spharm-coefficients/34673)

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**Author:** [@etour](https://discourse.slicer.org/u/etour)\
**Replies:** 1\
**Last updated:** [March 4, 2024, 1:01pm UTC](https://discourse.slicer.org/t/spharm-pdm-error-not-enough-points-cannot-solve-spharm-coefficients/34673 "2024-03-04T13:01:31Z")

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Hi everyone! I’ve just attempted to process 8 .nrrd files using the SPHARM ‘Shape Analysis Module’. 7 of these files have worked as expected, and I get all the right outputs at the end. However, I’m having issues with 1…

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## [SPHARM-PDM Error: 'SegPostProcess terminated with a numerical fault'](https://discourse.slicer.org/t/spharm-pdm-error-segpostprocess-terminated-with-a-numerical-fault/34519)

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**Author:** [@etour](https://discourse.slicer.org/u/etour)\
**Replies:** 6\
**Last updated:** [March 3, 2024, 12:31am UTC](https://discourse.slicer.org/t/spharm-pdm-error-segpostprocess-terminated-with-a-numerical-fault/34519 "2024-03-03T00:31:33Z")

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Hello! I’ve been attempting to use SlicerSALT SPHARM-PDM to compare the shape of some archaeological artefacts that I’m analysing (clay documents, to be more specific). My original 3D mesh files are .ply, and I’ve been a…

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## [Automatic centerline](https://discourse.slicer.org/t/automatic-centerline/14829)

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**Author:** [@Daniele\_Morbidelli](https://discourse.slicer.org/u/Daniele_Morbidelli)\
**Replies:** 31\
**Last updated:** [February 29, 2024, 7:33pm UTC](https://discourse.slicer.org/t/automatic-centerline/14829 "2024-02-29T19:33:11Z")

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Hi All, is there a way to generate the centerline automatically? In my case I have a geometry with always one input and 4 outputs.

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## [2024.02.27 Weekly Meeting](https://discourse.slicer.org/t/2024-02-27-weekly-meeting/34553)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [February 26, 2024, 8:17pm UTC](https://discourse.slicer.org/t/2024-02-27-weekly-meeting/34553 "2024-02-26T20:17:25Z")

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Tomorrow, 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: Extension dashboard status C…

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## [Open source Human Anatomy Atlas](https://discourse.slicer.org/t/open-source-human-anatomy-atlas/17734)

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**Author:** [@Melodicpinpon](https://discourse.slicer.org/u/Melodicpinpon)\
**Replies:** 29\
**Last updated:** [February 22, 2024, 1:27am UTC](https://discourse.slicer.org/t/open-source-human-anatomy-atlas/17734 "2024-02-22T01:27:47Z")

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Hello everybody, You may like to see the first steps towards what should become a full open source 3D human anatomy atlas; you can now download the .blend files (Blender offers great options to organize and visualize th…

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## [Pyradiomics doesn't calculate features for all VOIs](https://discourse.slicer.org/t/pyradiomics-doesnt-calculate-features-for-all-vois/34454)

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**Author:** [@Dhartez](https://discourse.slicer.org/u/Dhartez)\
**Replies:** 0\
**Last updated:** [February 21, 2024, 4:08pm UTC](https://discourse.slicer.org/t/pyradiomics-doesnt-calculate-features-for-all-vois/34454 "2024-02-21T16:08:16Z")

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Hi all, I am having a little issue with pyradiomics in Slicer. Briefly, this is to extract features from CNN generated segmentations of two brain structures (bilaterally, so 4 segmentations / VOIs in total) on MRI. Whe…

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## [2024.02.10 Weekly Meeting](https://discourse.slicer.org/t/2024-02-10-weekly-meeting/34404)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 1\
**Last updated:** [February 20, 2024, 1:08pm UTC](https://discourse.slicer.org/t/2024-02-10-weekly-meeting/34404 "2024-02-20T13:08:33Z")

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Tomorrow, 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: Extension dashboard status P…

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## [Colliding fronts output near a side branch](https://discourse.slicer.org/t/colliding-fronts-output-near-a-side-branch/34416)

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**Author:** [@ckolluru](https://discourse.slicer.org/u/ckolluru)\
**Replies:** 0\
**Last updated:** [February 20, 2024, 5:58am UTC](https://discourse.slicer.org/t/colliding-fronts-output-near-a-side-branch/34416 "2024-02-20T05:58:33Z")

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I’m trying to add seed points before and after a bifurcation to run colliding fronts with VMTK. Let’s say the parent vessel branches into two, branch 1 and branch 2. I add one seed point in the parent vessel and one in …

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## [2024.02.13 Weekly Meeting](https://discourse.slicer.org/t/2024-02-13-weekly-meeting/34266)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [February 12, 2024, 7:36pm UTC](https://discourse.slicer.org/t/2024-02-13-weekly-meeting/34266 "2024-02-12T19:36:52Z")

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Tomorrow, 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: Extension dashboard status P…

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