# Community

**URL:** https://discourse.slicer.org/c/community/12.md?no_subcategories=false&page=31

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

**Page:** 32

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## [VMTK Centerline extraction vs. CGAL mesh skeletonization](https://discourse.slicer.org/t/vmtk-centerline-extraction-vs-cgal-mesh-skeletonization/18063)

<div class="topic-metadata">

**Author:** [@Zemleroi](https://discourse.slicer.org/u/Zemleroi)\
**Replies:** 8\
**Last updated:** [June 12, 2021, 6:58am UTC](https://discourse.slicer.org/t/vmtk-centerline-extraction-vs-cgal-mesh-skeletonization/18063 "2021-06-12T06:58:11Z")

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Hi, How does the vmtk centerline extraction method compare with CGAL’s Triangulated Surface Mesh Skeletonization? Does the method implemented in CGAL work less well on tubular geometry?

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## [Project Week prep meeting - June 15](https://discourse.slicer.org/t/project-week-prep-meeting-june-15/18068)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [June 10, 2021, 8:51pm UTC](https://discourse.slicer.org/t/project-week-prep-meeting-june-15/18068 "2021-06-10T20:51:05Z")

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Dear members of the Project Week community, Please join us for the next Project Week 35 preparation meeting on June 15 (10 am Boston time, EDT) on Zoom. Given the success of this week’s meeting about image-guided thera…

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## [2021.06.08 Hangout - 11 AM ET after Project Week Meeting](https://discourse.slicer.org/t/2021-06-08-hangout-11-am-et-after-project-week-meeting/18001)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [June 7, 2021, 4:49pm UTC](https://discourse.slicer.org/t/2021-06-08-hangout-11-am-et-after-project-week-meeting/18001 "2021-06-07T16:49:00Z")

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Tomorrow, we will be having our next weekly hangout at 11:00 AM ET, after the Project Week meeting . We will be remaining on the Project Week Zoom call for the hangout. Anyone is welcome to join to ask questions! Agend…

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## [Reminder: Project Week prep meeting tomorrow- June 8 2021](https://discourse.slicer.org/t/reminder-project-week-prep-meeting-tomorrow-june-8-2021/18000)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [June 7, 2021, 4:47pm UTC](https://discourse.slicer.org/t/reminder-project-week-prep-meeting-tomorrow-june-8-2021/18000 "2021-06-07T16:47:44Z")

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Dear members of the Project Week community, Please join us for our next Project Week 35 preparation meeting tomorrow June 8 (10 am Boston time, EDT) on Zoom. This week’s preparation meeting will focus on image-guided th…

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## [Can SlicerRadiomics perform Feature selection for 2D imaging?](https://discourse.slicer.org/t/can-slicerradiomics-perform-feature-selection-for-2d-imaging/11903)

<div class="topic-metadata">

**Author:** [@LinJP123](https://discourse.slicer.org/u/LinJP123)\
**Replies:** 8\
**Last updated:** [June 5, 2021, 6:43pm UTC](https://discourse.slicer.org/t/can-slicerradiomics-perform-feature-selection-for-2d-imaging/11903 "2021-06-05T18:43:03Z")

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Operating system:window 10 Slicer version: 4.10.2 Expected behavior: Actual behavior: Can the SlicerRadiomics perform Feature selection for 2D imaging? And how to set?

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## [2021.06.01 Hangout - 11 AM ET after Project Week Meeting](https://discourse.slicer.org/t/2021-06-01-hangout-11-am-et-after-project-week-meeting/17889)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 2\
**Last updated:** [June 1, 2021, 5:27pm UTC](https://discourse.slicer.org/t/2021-06-01-hangout-11-am-et-after-project-week-meeting/17889 "2021-06-01T17:27:59Z")

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Tomorrow, we will be having our next weekly hangout at 11:00 AM ET, after the Project Week meeting . We will be remaining on the Project Week Zoom call for the hangout. Anyone is welcome to join to ask questions! Agend…

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## [Reminder: Project Week prep meeting tomorrow - June 1 2021](https://discourse.slicer.org/t/reminder-project-week-prep-meeting-tomorrow-june-1-2021/17888)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 31, 2021, 10:52pm UTC](https://discourse.slicer.org/t/reminder-project-week-prep-meeting-tomorrow-june-1-2021/17888 "2021-05-31T22:52:57Z")

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Dear members of the Project Week community, Please join us for our second Project Week 35 preparation meeting tomorrow June 1 (10 am Boston time, EDT) on Zoom. This week, we will be discussing projects and tutorials sur…

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## [Next Project Week prep meeting (June 1) - AI-assisted annotations and MONAI](https://discourse.slicer.org/t/next-project-week-prep-meeting-june-1-ai-assisted-annotations-and-monai/17816)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 26, 2021, 6:02pm UTC](https://discourse.slicer.org/t/next-project-week-prep-meeting-june-1-ai-assisted-annotations-and-monai/17816 "2021-05-26T18:02:36Z")

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Dear members of the Project Week community, Please join us for our third Project Week 35 preparation meeting next Tuesday, June 1 (10 am Boston time, EDT) on Zoom. This week, we will be discussing projects and tutorial…

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## [New CZI RFA for imaging scientists from developing countries](https://discourse.slicer.org/t/new-czi-rfa-for-imaging-scientists-from-developing-countries/17794)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [May 26, 2021, 4:29am UTC](https://discourse.slicer.org/t/new-czi-rfa-for-imaging-scientists-from-developing-countries/17794 "2021-05-26T04:29:21Z")

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I think this might be an excellent opportunity for some of Slicer’s users/developers in developing countries. See RFA here: New Funding Opportunity to Expand Global Access to Bioimaging

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## [2021.05.25 Hangout - 11 AM ET after Project Week Meeting](https://discourse.slicer.org/t/2021-05-25-hangout-11-am-et-after-project-week-meeting/17777)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 24, 2021, 10:48pm UTC](https://discourse.slicer.org/t/2021-05-25-hangout-11-am-et-after-project-week-meeting/17777 "2021-05-24T22:48:53Z")

</div>

Tomorrow, we will be having our next weekly hangout at 11:00 AM ET, after the Project Week meeting. We will be remaining on the Project Week Zoom call for the hangout. Anyone is welcome to join to ask questions! Agend…

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## [Reminder: Project Week prep meeting tomorrow](https://discourse.slicer.org/t/reminder-project-week-prep-meeting-tomorrow/17776)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 24, 2021, 10:45pm UTC](https://discourse.slicer.org/t/reminder-project-week-prep-meeting-tomorrow/17776 "2021-05-24T22:45:23Z")

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Dear members of the Project Week community, Please join us for the second Project Week 35 preparation meeting tomorrow, May 25 (10 am Boston time, EDT). We will discuss the detailed format of the workshop and schedule d…

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## [Error after building ](https://discourse.slicer.org/t/error-after-building/17445)

<div class="topic-metadata">

**Author:** [@MarioGQ](https://discourse.slicer.org/u/MarioGQ)\
**Replies:** 1\
**Last updated:** [May 21, 2021, 6:36pm UTC](https://discourse.slicer.org/t/error-after-building/17445 "2021-05-21T18:36:53Z")

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Hi everyone. I keep receiving this error when i try to open Slicer environmenr after building it QWindowsEGLContext: ANGLE only partially supports OpenGL ES \> 3.0 QWindowsEGLContext: Failed to create context, eglError:…

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## [SlicerDMRI Tractography Display, Fiber bundle selection with custom function](https://discourse.slicer.org/t/slicerdmri-tractography-display-fiber-bundle-selection-with-custom-function/17566)

<div class="topic-metadata">

**Author:** [@simonoxen](https://discourse.slicer.org/u/simonoxen)\
**Replies:** 2\
**Last updated:** [May 19, 2021, 4:27pm UTC](https://discourse.slicer.org/t/slicerdmri-tractography-display-fiber-bundle-selection-with-custom-function/17566 "2021-05-19T16:27:57Z")

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Hi, would it be possible to set up different ways of fiber bundle selection other than ROI? I would be interested in using a sphere for example, simulating a simple volume of tissue activated and displaying overlapping …

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## [2021.05.18 Hangout - NO meeting due to first project week meeting](https://discourse.slicer.org/t/2021-05-18-hangout-no-meeting-due-to-first-project-week-meeting/17660)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 17, 2021, 6:57pm UTC](https://discourse.slicer.org/t/2021-05-18-hangout-no-meeting-due-to-first-project-week-meeting/17660 "2021-05-17T18:57:46Z")

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We will NOT be having the weekly dev meeting tomorrow, as the first Project Week meeting is at the same time. The Slicer dev team will be at the Project Week meeting, where we will discuss how we will handle scheduling …

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## [Reminder: Project Week #35 preparation meetings starting tomorrow](https://discourse.slicer.org/t/reminder-project-week-35-preparation-meetings-starting-tomorrow/17659)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 17, 2021, 6:53pm UTC](https://discourse.slicer.org/t/reminder-project-week-35-preparation-meetings-starting-tomorrow/17659 "2021-05-17T18:53:08Z")

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Dear members of the Project Week community, After the success of the first online project week last December, we are renewing the experience for Project Week 35 (June 28-July 2, 2021). Weekly preparation meetings will s…

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## [How to run cast scalar volume module from command line](https://discourse.slicer.org/t/how-to-run-cast-scalar-volume-module-from-command-line/17595)

<div class="topic-metadata">

**Author:** [@shael](https://discourse.slicer.org/u/shael)\
**Replies:** 2\
**Last updated:** [May 14, 2021, 6:53pm UTC](https://discourse.slicer.org/t/how-to-run-cast-scalar-volume-module-from-command-line/17595 "2021-05-14T18:53:21Z")

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Hi community, I’m trying to run the Cast Scalar Volume module from the command line to convert a nifti brain mask into a uchar nrrd file format. I can successfully run the command from the Slicer GUI, and when I click o…

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## [How to detect multiple vessels between two endpoints](https://discourse.slicer.org/t/how-to-detect-multiple-vessels-between-two-endpoints/17604)

<div class="topic-metadata">

**Author:** [@perecanals](https://discourse.slicer.org/u/perecanals)\
**Replies:** 1\
**Last updated:** [May 13, 2021, 2:19pm UTC](https://discourse.slicer.org/t/how-to-detect-multiple-vessels-between-two-endpoints/17604 "2021-05-13T14:19:48Z")

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Hi, In the images I usually analyze, it is common to get vascular structures that have more than one path between endpoints (vessels that originate at one point and converge afterwards). As I understand it, the centerli…

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## [Tips to circumvent not having pre-contrast injection images for the purpose of bone subtraction](https://discourse.slicer.org/t/tips-to-circumvent-not-having-pre-contrast-injection-images-for-the-purpose-of-bone-subtraction/17561)

<div class="topic-metadata">

**Author:** [@KyleVanBeek](https://discourse.slicer.org/u/KyleVanBeek)\
**Replies:** 1\
**Last updated:** [May 13, 2021, 1:54pm UTC](https://discourse.slicer.org/t/tips-to-circumvent-not-having-pre-contrast-injection-images-for-the-purpose-of-bone-subtraction/17561 "2021-05-13T13:54:54Z")

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Hello, I have CTA brain data-sets for pre-operation and post operation of stroke patients and I want to segment the cerebral vessels to run some comparisons of geometry. I’ve been running into issues with other segmenta…

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## [Reminder: Project Week prep meetings start next week (May 18th)](https://discourse.slicer.org/t/reminder-project-week-prep-meetings-start-next-week-may-18th/17601)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 12, 2021, 8:52pm UTC](https://discourse.slicer.org/t/reminder-project-week-prep-meetings-start-next-week-may-18th/17601 "2021-05-12T20:52:07Z")

</div>

Dear members of the Project Week community, After the success of the first online project week last December, we are renewing the experience for Project Week 35 (June 28-July 2, 2021). Weekly preparation meetings will s…

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## [2021.05.11 Hangout](https://discourse.slicer.org/t/2021-05-11-hangout/17556)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 7\
**Last updated:** [May 11, 2021, 3:20pm UTC](https://discourse.slicer.org/t/2021-05-11-hangout/17556 "2021-05-11T15:20:08Z")

</div>

Tomorrow, we will be having our next weekly hangout at 10:00 AM ET until 11 AM ET. Anyone is welcome to join to ask questions at https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Slicer 5 Extension manager …

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## [How to obtain the complete center lines using VMTK?](https://discourse.slicer.org/t/how-to-obtain-the-complete-center-lines-using-vmtk/14068)

<div class="topic-metadata">

**Author:** [@KaryLiang](https://discourse.slicer.org/u/KaryLiang)\
**Replies:** 12\
**Last updated:** [May 11, 2021, 11:54am UTC](https://discourse.slicer.org/t/how-to-obtain-the-complete-center-lines-using-vmtk/14068 "2021-05-11T11:54:59Z")

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Hello, I’m trying to obtain center lines from airway using VMTK. After dilating the pixels of airway, i got most of the center line, including from the small airway, looks like this: my problem is, why the center lin…

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## [Unable to run vmtksurfaceviewer](https://discourse.slicer.org/t/unable-to-run-vmtksurfaceviewer/17555)

<div class="topic-metadata">

**Author:** [@banderies](https://discourse.slicer.org/u/banderies)\
**Replies:** 1\
**Last updated:** [May 11, 2021, 4:12am UTC](https://discourse.slicer.org/t/unable-to-run-vmtksurfaceviewer/17555 "2021-05-11T04:12:02Z")

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I installed VMTK using Anaconda as the website describes. When I try to run vmtksurfaceviewer, I get the following error: Unexpected error: \<class ‘ModuleNotFoundError’\> Traceback (most recent call last): File “/home/…

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## [Script to compute Voronoi diagrams/largest aorta diameter using VMTK](https://discourse.slicer.org/t/script-to-compute-voronoi-diagrams-largest-aorta-diameter-using-vmtk/17549)

<div class="topic-metadata">

**Author:** [@banderies](https://discourse.slicer.org/u/banderies)\
**Replies:** 1\
**Last updated:** [May 11, 2021, 3:37am UTC](https://discourse.slicer.org/t/script-to-compute-voronoi-diagrams-largest-aorta-diameter-using-vmtk/17549 "2021-05-11T03:37:02Z")

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I have a large number of aorta segmentations (nifti masks), and I would like to figure out how to load each one and compute the largest diameter (aneurysm). It looks as if computing a Voronoi diagram using VMTK is an ide…

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## [CT brain import data](https://discourse.slicer.org/t/ct-brain-import-data/17533)

<div class="topic-metadata">

**Author:** [@Gonzalo\_Rojas\_Costa](https://discourse.slicer.org/u/Gonzalo_Rojas_Costa)\
**Replies:** 3\
**Last updated:** [May 10, 2021, 8:54pm UTC](https://discourse.slicer.org/t/ct-brain-import-data/17533 "2021-05-10T20:54:02Z")

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I tried to load a 1mm brain CT image, but the software hungs. The CT mage is in nrrd file format.

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## [Resampling grey levels on imaging sets](https://discourse.slicer.org/t/resampling-grey-levels-on-imaging-sets/17468)

<div class="topic-metadata">

**Author:** [@mdpy](https://discourse.slicer.org/u/mdpy)\
**Replies:** 0\
**Last updated:** [May 5, 2021, 12:29pm UTC](https://discourse.slicer.org/t/resampling-grey-levels-on-imaging-sets/17468 "2021-05-05T12:29:52Z")

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I finally have sorted all my raw imaging and labels (only took 3 months of coding!). Since then, I’ve been running some feature extractions on approximately 200 image sets. However after getting the basic’s running I th…

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## [2021.05.04 Hangout](https://discourse.slicer.org/t/2021-05-04-hangout/17425)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 0\
**Last updated:** [May 3, 2021, 9:01pm UTC](https://discourse.slicer.org/t/2021-05-04-hangout/17425 "2021-05-03T21:01:29Z")

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Tomorrow, we will be having our next weekly hangout at 10:00 AM ET until 11 AM ET. Anyone is welcome to join to ask questions at https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Slicer 5 Extension manager …

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## [Is there any related document introduction or video demonstration about different modules](https://discourse.slicer.org/t/is-there-any-related-document-introduction-or-video-demonstration-about-different-modules/17407)

<div class="topic-metadata">

**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 1\
**Last updated:** [May 3, 2021, 9:50am UTC](https://discourse.slicer.org/t/is-there-any-related-document-introduction-or-video-demonstration-about-different-modules/17407 "2021-05-03T09:50:51Z")

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Dear friends! In the Slicer extension module market, there are many unused modules. If I want to learn how to use different modules, is there any related document introduction or video demonstration? Because sometimes…

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## [2021.04.27 Hangout](https://discourse.slicer.org/t/2021-04-27-hangout/17339)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 3\
**Last updated:** [April 27, 2021, 3:14pm UTC](https://discourse.slicer.org/t/2021-04-27-hangout/17339 "2021-04-27T15:14:52Z")

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Tomorrow, we will be having our next weekly hangout at 10:00 AM ET until 11 AM ET. Anyone is welcome to join to ask questions at https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Slicer 5 Feel free to post…

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## [3D Slicer and Antikythera Mechanism, A new publication](https://discourse.slicer.org/t/3d-slicer-and-antikythera-mechanism-a-new-publication/17316)

<div class="topic-metadata">

**Author:** [@Icarus](https://discourse.slicer.org/u/Icarus)\
**Replies:** 0\
**Last updated:** [April 25, 2021, 10:43pm UTC](https://discourse.slicer.org/t/3d-slicer-and-antikythera-mechanism-a-new-publication/17316 "2021-04-25T22:43:16Z")

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Our sixth publication of our team The Functional Reconstruction of Antikythera Mechanism-The FRAMe Project , which just published in the Mediterranean Archaeology and Archaeometry Journal . Our paper entitled " Renumbe…

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## [R6034 Error using 3dSlicer](https://discourse.slicer.org/t/r6034-error-using-3dslicer/17300)

<div class="topic-metadata">

**Author:** [@MarioGQ](https://discourse.slicer.org/u/MarioGQ)\
**Replies:** 0\
**Last updated:** [April 24, 2021, 11:00pm UTC](https://discourse.slicer.org/t/r6034-error-using-3dslicer/17300 "2021-04-24T23:00:51Z")

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Hi everyone. I am having trouble trying to use 3D Slicer to work with pyradiomics, specifically i get the Runtime Error R6034 (An application has made attemp to load the C runtime library incorrectly. Please contact the …

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