# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=212

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

**Page:** 213

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## [Retrieve Volume and Surface Area of a ModelNode (Surface Mesh (vtkPolyData)) - Python](https://discourse.slicer.org/t/retrieve-volume-and-surface-area-of-a-modelnode-surface-mesh-vtkpolydata-python/21556)

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**Author:** [@l.geronzi](https://discourse.slicer.org/u/l.geronzi)\
**Replies:** 4\
**Last updated:** [August 2, 2022, 2:57am UTC](https://discourse.slicer.org/t/retrieve-volume-and-surface-area-of-a-modelnode-surface-mesh-vtkpolydata-python/21556 "2022-08-02T02:57:01Z")

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Hi all, I am a beginner and I don’t have much experience with the 3DSlicer environment and vtk libraries. I have already followed the various tutorials to get started. My problem is the following. I am trying to use p…

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## [Export to Volume to DICOM and Edit Exported Data Tags](https://discourse.slicer.org/t/export-to-volume-to-dicom-and-edit-exported-data-tags/24561)

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**Author:** [@rhodesdante](https://discourse.slicer.org/u/rhodesdante)\
**Replies:** 2\
**Last updated:** [August 1, 2022, 6:30pm UTC](https://discourse.slicer.org/t/export-to-volume-to-dicom-and-edit-exported-data-tags/24561 "2022-08-01T18:30:34Z")

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I am trying to edit ultrasound volumes such that on subsequent uses, they are automatically loaded in with my desired window/level–different from the one Slicer selects automatically. My thought process is as follows. E…

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## [Hollow sphere: Dynamic modeler](https://discourse.slicer.org/t/hollow-sphere-dynamic-modeler/24589)

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**Author:** [@AMK](https://discourse.slicer.org/u/AMK)\
**Replies:** 1\
**Last updated:** [August 1, 2022, 11:17am UTC](https://discourse.slicer.org/t/hollow-sphere-dynamic-modeler/24589 "2022-08-01T11:17:31Z")

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Hi, I am trying to create a hollow sphere. For this I was trying to use the dynamic modeler tools option of ‘hollow’. I had expected that it would create a shell of the specified thickness. Instead it creates another mo…

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## [Screws spacial organize](https://discourse.slicer.org/t/screws-spacial-organize/24573)

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**Author:** [@apparrilla](https://discourse.slicer.org/u/apparrilla)\
**Replies:** 7\
**Last updated:** [August 1, 2022, 8:09am UTC](https://discourse.slicer.org/t/screws-spacial-organize/24573 "2022-08-01T08:09:51Z")

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Hi everyone, I´ve segmented the screws of an intraoperative CBCT of one of my spinal surgeries. This is the result: I´ve used Segment Statistics to get each segment center and I want to iterate all of them. My pro…

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## [Histogram using Phyton ](https://discourse.slicer.org/t/histogram-using-phyton/24577)

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**Author:** [@Jessica](https://discourse.slicer.org/u/Jessica)\
**Replies:** 1\
**Last updated:** [July 30, 2022, 7:12pm UTC](https://discourse.slicer.org/t/histogram-using-phyton/24577 "2022-07-30T19:12:06Z")

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Hello, I have zero experience in 3D slicer or coding I am actually MD I am working on project and was able to segment the pituitary from Segment editor then calculate the volume using Statistics Need to get a grayscal…

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## [Is it possible to register two meshes then subtract away the overlapping region?](https://discourse.slicer.org/t/is-it-possible-to-register-two-meshes-then-subtract-away-the-overlapping-region/24571)

<div class="topic-metadata">

**Author:** [@jsalas424](https://discourse.slicer.org/u/jsalas424)\
**Replies:** 2\
**Last updated:** [July 30, 2022, 12:19pm UTC](https://discourse.slicer.org/t/is-it-possible-to-register-two-meshes-then-subtract-away-the-overlapping-region/24571 "2022-07-30T12:19:24Z")

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Hi all, TLDR: I want to register two meshes and find the corresponding points/indices so that I can compare a derived value within and outside my region of interest. I have mesh A generated by one modality, I then perf…

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## [Link views in three over three configuration](https://discourse.slicer.org/t/link-views-in-three-over-three-configuration/24564)

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**Author:** [@JoeNajm](https://discourse.slicer.org/u/JoeNajm)\
**Replies:** 4\
**Last updated:** [July 29, 2022, 10:26pm UTC](https://discourse.slicer.org/t/link-views-in-three-over-three-configuration/24564 "2022-07-29T22:26:58Z")

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Hello, I am working on an extension using MRI images, in which I need to display the flair and phase of the same patient next to each other (the flair are the bottom row images and the phase are the top row images in th…

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## [Windows preview build failing yesterday and today](https://discourse.slicer.org/t/windows-preview-build-failing-yesterday-and-today/24567)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 2\
**Last updated:** [July 29, 2022, 6:28pm UTC](https://discourse.slicer.org/t/windows-preview-build-failing-yesterday-and-today/24567 "2022-07-29T18:28:04Z")

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I am eager to test the improvements @lassoan added in a pull request (see Convert between MultiVolume and Volume Sequence? - #5 by lassoan for discussion) a few days ago, but the Windows preview build has failed each day…

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## [What is the corresponding matrix to the transformation/rotation I need?](https://discourse.slicer.org/t/what-is-the-corresponding-matrix-to-the-transformation-rotation-i-need/24553)

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**Author:** [@jsalas424](https://discourse.slicer.org/u/jsalas424)\
**Replies:** 2\
**Last updated:** [July 29, 2022, 6:11pm UTC](https://discourse.slicer.org/t/what-is-the-corresponding-matrix-to-the-transformation-rotation-i-need/24553 "2022-07-29T18:11:38Z")

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I have the following x, y, z coordinates: -X Z Y -16.215 126.065 12.236 -16.149 125.708 14.237 -16.843 125.851 13.707 ... ... ... Corresponding to matrix: 1.00 0.00 0.00 0.00 0.00 1.00 0.00 …

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## [Resize an image by averaging?](https://discourse.slicer.org/t/resize-an-image-by-averaging/24565)

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**Author:** [@drakewilliams](https://discourse.slicer.org/u/drakewilliams)\
**Replies:** 2\
**Last updated:** [July 29, 2022, 6:03pm UTC](https://discourse.slicer.org/t/resize-an-image-by-averaging/24565 "2022-07-29T18:03:22Z")

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Hi, I’m working with microct images (animal) and we typically only need a small area (teeth) for analysis even though we have a much larger volume scanned (whole skull). My computer is underpowered to load the whole sku…

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## [How to improve the quality of screen shot](https://discourse.slicer.org/t/how-to-improve-the-quality-of-screen-shot/24555)

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**Author:** [@1023185654](https://discourse.slicer.org/u/1023185654)\
**Replies:** 1\
**Last updated:** [July 29, 2022, 3:25pm UTC](https://discourse.slicer.org/t/how-to-improve-the-quality-of-screen-shot/24555 "2022-07-29T15:25:23Z")

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hello,everyone. I want the screenshot of the 3D window to be sharper, I saw the previous issue that scale factor can be adjusted，is there a Python code for that now ? Now, i used off screen render to set a high resolu…

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## [After last update 3D Slicer start work with errors](https://discourse.slicer.org/t/after-last-update-3d-slicer-start-work-with-errors/24566)

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**Author:** [@radiodid](https://discourse.slicer.org/u/radiodid)\
**Replies:** 2\
**Last updated:** [July 29, 2022, 2:53pm UTC](https://discourse.slicer.org/t/after-last-update-3d-slicer-start-work-with-errors/24566 "2022-07-29T14:53:24Z")

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After the last update, there are some problems with the tool. The application began to lag after creating 3D reconstructions, although before I did them with a much larger number of objects. And when I use Smoothing, the…

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## [Echocardiogram time stamp](https://discourse.slicer.org/t/echocardiogram-time-stamp/24202)

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**Author:** [@Deepthy\_Rose\_Jose\_am](https://discourse.slicer.org/u/Deepthy_Rose_Jose_am)\
**Replies:** 12\
**Last updated:** [July 29, 2022, 11:00am UTC](https://discourse.slicer.org/t/echocardiogram-time-stamp/24202 "2022-07-29T11:00:09Z")

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Hello Everyone, I’m trying to render an 4D echocardiogram in Slicer3D. The data format is a 3D dcm exported from Qlab software. Please find the attached picture. The volume rendering feature doesn’t show the time stamp …

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## [Loading seg.nrrd files very slow or failing](https://discourse.slicer.org/t/loading-seg-nrrd-files-very-slow-or-failing/24444)

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**Author:** [@coco](https://discourse.slicer.org/u/coco)\
**Replies:** 7\
**Last updated:** [July 26, 2022, 8:53am UTC](https://discourse.slicer.org/t/loading-seg-nrrd-files-very-slow-or-failing/24444 "2022-07-26T08:53:04Z")

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Hello everyone, Still very new to Slicer so apologies if this is an obvious question/answer. I’m working on the linux version of slicer on a cluster in interactive mode. We have finished segmenting a volume of ~10GB a…

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## [Citing Slicer modules/extensions](https://discourse.slicer.org/t/citing-slicer-modules-extensions/3217)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 2\
**Last updated:** [July 28, 2022, 6:45pm UTC](https://discourse.slicer.org/t/citing-slicer-modules-extensions/3217 "2022-07-28T18:45:24Z")

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When I use Slicer in a publication, I have been citing this paper. Kikinis R, Pieper SD, Vosburgh KG. 2014. 3D Slicer: A Platform for Subject-Specific Image Analysis, Visualization, and Clinical Support. In: Intraoperat…

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## [DICOM view of a cardiac sequence](https://discourse.slicer.org/t/dicom-view-of-a-cardiac-sequence/24547)

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**Author:** [@Dhruba](https://discourse.slicer.org/u/Dhruba)\
**Replies:** 1\
**Last updated:** [July 28, 2022, 6:13pm UTC](https://discourse.slicer.org/t/dicom-view-of-a-cardiac-sequence/24547 "2022-07-28T18:13:10Z")

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Hi, I’ve been trying to import and view 1 sequence of DICOM cardiac image. Whenever I try to load the images, I get the following warning: If I load anyway, I can only see the sagittal view. But the Coronal and Axial…

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## [Need help making a 3D mesh given co-ordinates of the vertices and vertex indices of each face for 3D Slicer - trimesh/vtkwrite/etc](https://discourse.slicer.org/t/need-help-making-a-3d-mesh-given-co-ordinates-of-the-vertices-and-vertex-indices-of-each-face-for-3d-slicer-trimesh-vtkwrite-etc/24536)

<div class="topic-metadata">

**Author:** [@jsalas424](https://discourse.slicer.org/u/jsalas424)\
**Replies:** 2\
**Last updated:** [July 28, 2022, 3:19pm UTC](https://discourse.slicer.org/t/need-help-making-a-3d-mesh-given-co-ordinates-of-the-vertices-and-vertex-indices-of-each-face-for-3d-slicer-trimesh-vtkwrite-etc/24536 "2022-07-28T15:19:45Z")

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Hi all, Given the following data: The Cartesian co-ordinates of the vertices in the surface mesh: n vertices x 3 The vertex indices of each face in the surface mesh: n faces x 3 I’m trying to make some 3D file that I…

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## [Feature Extraction NRRD image](https://discourse.slicer.org/t/feature-extraction-nrrd-image/24544)

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**Author:** [@Van\_Tran\_Sang\_Huynh](https://discourse.slicer.org/u/Van_Tran_Sang_Huynh)\
**Replies:** 0\
**Last updated:** [July 28, 2022, 2:09pm UTC](https://discourse.slicer.org/t/feature-extraction-nrrd-image/24544 "2022-07-28T14:09:20Z")

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I have a data image DICOM of 3 files. I can convert image files to .NRRD files. But the Segmentation file to create the label I can’t. Is there any way to help me? Hope the helping.

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## [Code of conduct document](https://discourse.slicer.org/t/code-of-conduct-document/17663)

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**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 1\
**Last updated:** [July 28, 2022, 2:08pm UTC](https://discourse.slicer.org/t/code-of-conduct-document/17663 "2022-07-28T14:08:49Z")

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While reviewing project metrics for a grant application we realized that although we have a common understanding about how to conduct operations in the Slicer community, we do not have a formalized document to describe i…

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## [Using Send to DICOM Server with IP address, Port and AET](https://discourse.slicer.org/t/using-send-to-dicom-server-with-ip-address-port-and-aet/24535)

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**Author:** [@Ian](https://discourse.slicer.org/u/Ian)\
**Replies:** 2\
**Last updated:** [July 28, 2022, 1:15pm UTC](https://discourse.slicer.org/t/using-send-to-dicom-server-with-ip-address-port-and-aet/24535 "2022-07-28T13:15:21Z")

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Hi all, I am trying to send de-identified CT scans to an external server from 3D Slicer using the DIMSE protocol. I have the AE Title, Port and IP address of the destination; however, the Send to DICOM Server only allow…

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## [How to determine the 3D window to display in front view or top view based on the nodule position in each generated volume](https://discourse.slicer.org/t/how-to-determine-the-3d-window-to-display-in-front-view-or-top-view-based-on-the-nodule-position-in-each-generated-volume/24539)

<div class="topic-metadata">

**Author:** [@1023185654](https://discourse.slicer.org/u/1023185654)\
**Replies:** 0\
**Last updated:** [July 28, 2022, 9:53am UTC](https://discourse.slicer.org/t/how-to-determine-the-3d-window-to-display-in-front-view-or-top-view-based-on-the-nodule-position-in-each-generated-volume/24539 "2022-07-28T09:53:54Z")

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hello, everyone. i got a problem for find the best view to show nodules of generated volume rendering. i want to each volume had a best view to show nodule,

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## [Please how the module BRAINSResample transforms spacing and affine of a nifty image?](https://discourse.slicer.org/t/please-how-the-module-brainsresample-transforms-spacing-and-affine-of-a-nifty-image/24538)

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**Author:** [@Ndzimbong\_William\_Br](https://discourse.slicer.org/u/Ndzimbong_William_Br)\
**Replies:** 0\
**Last updated:** [July 28, 2022, 9:45am UTC](https://discourse.slicer.org/t/please-how-the-module-brainsresample-transforms-spacing-and-affine-of-a-nifty-image/24538 "2022-07-28T09:45:49Z")

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Operating system: Ubuntu Slicer version: 4.13.0-2021-11-25 Expected behavior: Actual behavior:

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## [Parameters file in Radiomics module](https://discourse.slicer.org/t/parameters-file-in-radiomics-module/24513)

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**Author:** [@Joyce](https://discourse.slicer.org/u/Joyce)\
**Replies:** 2\
**Last updated:** [July 28, 2022, 2:57am UTC](https://discourse.slicer.org/t/parameters-file-in-radiomics-module/24513 "2022-07-28T02:57:00Z")

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Operating system:Win 10 Slicer version:5.0.3 Expected behavior:Extract features with parameters file Actual behavior:UnicodeDecodeError Hello everyone, I want to use Radiomics module to extracrt features. I want to …

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## [Google drive issue](https://discourse.slicer.org/t/google-drive-issue/9232)

<div class="topic-metadata">

**Author:** [@BreadBoxGuy](https://discourse.slicer.org/u/BreadBoxGuy)\
**Replies:** 5\
**Last updated:** [July 27, 2022, 8:22pm UTC](https://discourse.slicer.org/t/google-drive-issue/9232 "2022-07-27T20:22:56Z")

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I use google drive for backing up my data, however it won’t let me save files or export files directly to the google drive folder which is allocated as a standard folder in Microsoft explorer. Any solutions? Or is it a f…

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## [Forward sequence feature](https://discourse.slicer.org/t/forward-sequence-feature/24528)

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**Author:** [@Manju\_Manju](https://discourse.slicer.org/u/Manju_Manju)\
**Replies:** 0\
**Last updated:** [July 27, 2022, 4:44pm UTC](https://discourse.slicer.org/t/forward-sequence-feature/24528 "2022-07-27T16:44:29Z")

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Sir how to do feature forward selection could any one help me with it

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## [Question regarding error on initial launch of python extension, but not subsequent reloads of the same script](https://discourse.slicer.org/t/question-regarding-error-on-initial-launch-of-python-extension-but-not-subsequent-reloads-of-the-same-script/24527)

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**Author:** [@Kevin.Kn](https://discourse.slicer.org/u/Kevin.Kn)\
**Replies:** 0\
**Last updated:** [July 27, 2022, 4:38pm UTC](https://discourse.slicer.org/t/question-regarding-error-on-initial-launch-of-python-extension-but-not-subsequent-reloads-of-the-same-script/24527 "2022-07-27T16:38:07Z")

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I currently have a script that gives an error on open, or whenever I change the output image of the gui. Otherwise, after that first error and a reload, I can run the extension perfectly. It results in the following err…

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## [Black screen on VR](https://discourse.slicer.org/t/black-screen-on-vr/23076)

<div class="topic-metadata">

**Author:** [@Eserval](https://discourse.slicer.org/u/Eserval)\
**Replies:** 11\
**Last updated:** [July 27, 2022, 12:08pm UTC](https://discourse.slicer.org/t/black-screen-on-vr/23076 "2022-07-27T12:08:31Z")

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Hello friends, I just bought a new notebook VR ready, however, when I try to open the VR module I have just a black screen. Its weird because Im using the same process on my desktop (inferior hardware configuration), th…

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## [Understanding coordinates](https://discourse.slicer.org/t/understanding-coordinates/24409)

<div class="topic-metadata">

**Author:** [@anitakh1](https://discourse.slicer.org/u/anitakh1)\
**Replies:** 5\
**Last updated:** [July 27, 2022, 10:42am UTC](https://discourse.slicer.org/t/understanding-coordinates/24409 "2022-07-27T10:42:08Z")

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Kindly let me know what these negative coordinated of coorX, coorY and coorZ means in this .csv file. when i open patient’s data in 3D slicer, I can view x,y,z coordinates in positive values

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## [ITK Simple Filters SubtractImageFilter](https://discourse.slicer.org/t/itk-simple-filters-subtractimagefilter/24515)

<div class="topic-metadata">

**Author:** [@Will](https://discourse.slicer.org/u/Will)\
**Replies:** 1\
**Last updated:** [July 27, 2022, 10:02am UTC](https://discourse.slicer.org/t/itk-simple-filters-subtractimagefilter/24515 "2022-07-27T10:02:36Z")

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Hello, I am trying to replicate the effect of CT angiography by creating a subtraction from two DICOM stacks. One is a mask, which is a CT without contrast injected into the patients arteries. The other is a fill, which…

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## [Extracted features is still working](https://discourse.slicer.org/t/extracted-features-is-still-working/24523)

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**Author:** [@zhuyingying1234](https://discourse.slicer.org/u/zhuyingying1234)\
**Replies:** 0\
**Last updated:** [July 27, 2022, 9:22am UTC](https://discourse.slicer.org/t/extracted-features-is-still-working/24523 "2022-07-27T09:22:28Z")

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Operating system: mac Slicer version:4.11 Expected behavior: Actual behavior: It’s been running for a long time.how can I end the state of working? Why is that?Can you help me? Thank you

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