# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=302

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

**Page:** 303

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## [Different voxels, but the same coordinate?](https://discourse.slicer.org/t/different-voxels-but-the-same-coordinate/15519)

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**Author:** [@Yasuhiro\_TAKEDA](https://discourse.slicer.org/u/Yasuhiro_TAKEDA)\
**Replies:** 8\
**Last updated:** [January 15, 2021, 1:58am UTC](https://discourse.slicer.org/t/different-voxels-but-the-same-coordinate/15519 "2021-01-15T01:58:34Z")

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Hi There are two MRI images, and the pointers in these two images indicate two different voxels which is adjacent. However, data probe shows the same coordinate, (115,134,63), and the same intensity, 2870. When importi…

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## [Run Slicer module functions on an external server](https://discourse.slicer.org/t/run-slicer-module-functions-on-an-external-server/15512)

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**Author:** [@sthirumal](https://discourse.slicer.org/u/sthirumal)\
**Replies:** 4\
**Last updated:** [January 14, 2021, 8:42pm UTC](https://discourse.slicer.org/t/run-slicer-module-functions-on-an-external-server/15512 "2021-01-14T20:42:25Z")

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I’ve created a Module in Slicer that includes some functions that are very computationally intensive. Given we already have a more computationally powerful server available to us, is there a way that we can run these fun…

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## [Make Slicers perpendicular to other](https://discourse.slicer.org/t/make-slicers-perpendicular-to-other/15518)

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**Author:** [@manjula](https://discourse.slicer.org/u/manjula)\
**Replies:** 3\
**Last updated:** [January 14, 2021, 6:59pm UTC](https://discourse.slicer.org/t/make-slicers-perpendicular-to-other/15518 "2021-01-14T18:59:57Z")

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After reformating one slice is there a way to make the other 2 slicer exactly perpendicular to the original along the other two axes?

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## [Exporting screenshots as vectorized images](https://discourse.slicer.org/t/exporting-screenshots-as-vectorized-images/15527)

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**Author:** [@FatihSogukpinar](https://discourse.slicer.org/u/FatihSogukpinar)\
**Replies:** 2\
**Last updated:** [January 14, 2021, 4:33pm UTC](https://discourse.slicer.org/t/exporting-screenshots-as-vectorized-images/15527 "2021-01-14T16:33:22Z")

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Hi all, Is it possible to export screenshots from Slicer as vectorized PDFs rather than PNGs ? As far as I know the only way to take screenshots is to use the screenshot icon but it only gives .png image. Thank you and…

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## [Connecting NDI Polaris Vicra to Slicer](https://discourse.slicer.org/t/connecting-ndi-polaris-vicra-to-slicer/15528)

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**Author:** [@tharisata\_c](https://discourse.slicer.org/u/tharisata_c)\
**Replies:** 1\
**Last updated:** [January 14, 2021, 3:46pm UTC](https://discourse.slicer.org/t/connecting-ndi-polaris-vicra-to-slicer/15528 "2021-01-14T15:46:28Z")

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Hi, I’m trying to connect my NDI Polaris Vicra into Slicer using OpenIGTLinkIF. However, I’m not quite sure how to really set this up. I understand that I need to use PLUS to do it - but not sure how to connect this to …

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## [Extracting Hounsfield units of segmentation](https://discourse.slicer.org/t/extracting-hounsfield-units-of-segmentation/15526)

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**Author:** [@Tomas\_Iesmantas](https://discourse.slicer.org/u/Tomas_Iesmantas)\
**Replies:** 0\
**Last updated:** [January 14, 2021, 2:57pm UTC](https://discourse.slicer.org/t/extracting-hounsfield-units-of-segmentation/15526 "2021-01-14T14:57:20Z")

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Hi, I have segmentation of the series of DICOM images (I have those images as well). I would like to output spatial coordinates of the segmentation (just lik in STL format) as well as Hounsfield units at those points. …

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## [Nasal airways simulation](https://discourse.slicer.org/t/nasal-airways-simulation/15459)

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**Author:** [@Polyynom](https://discourse.slicer.org/u/Polyynom)\
**Replies:** 2\
**Last updated:** [January 14, 2021, 2:29pm UTC](https://discourse.slicer.org/t/nasal-airways-simulation/15459 "2021-01-14T14:29:31Z")

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Dear 3D Slicer users, I need to make model of nasal airways. like on the picture I have some problem with this owing I’m new user. To solve I’ve use Segment Editor where choose Threshold range and obtained the mode…

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## [Opened saved mrml on another computer and all the work was gone](https://discourse.slicer.org/t/opened-saved-mrml-on-another-computer-and-all-the-work-was-gone/15524)

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**Author:** [@Wesley\_Thornton](https://discourse.slicer.org/u/Wesley_Thornton)\
**Replies:** 0\
**Last updated:** [January 14, 2021, 2:12pm UTC](https://discourse.slicer.org/t/opened-saved-mrml-on-another-computer-and-all-the-work-was-gone/15524 "2021-01-14T14:12:48Z")

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Operating system: macOS Mojave Slicer version: 4.11.20200930 Expected behavior: Actual behavior: I posted about having trouble with macOS Big Sur. I downloaded this version of Slicer onto a computer running Mojave. Wh…

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## [Move 3D focal point using mouse or keyboard](https://discourse.slicer.org/t/move-3d-focal-point-using-mouse-or-keyboard/15468)

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**Author:** [@torquil](https://discourse.slicer.org/u/torquil)\
**Replies:** 2\
**Last updated:** [January 13, 2021, 8:02pm UTC](https://discourse.slicer.org/t/move-3d-focal-point-using-mouse-or-keyboard/15468 "2021-01-13T20:02:57Z")

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I would like to know how to use the mouse or keyboard in the 3D view to move the focal point of the camera away from me or closer to me. I know how to move it sideways by using the mouse middle-click + drag. I also know …

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## [Get cell indices in exported mesh corresponding to each segment](https://discourse.slicer.org/t/get-cell-indices-in-exported-mesh-corresponding-to-each-segment/15437)

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**Author:** [@Elijah\_Alexson](https://discourse.slicer.org/u/Elijah_Alexson)\
**Replies:** 14\
**Last updated:** [January 13, 2021, 7:00pm UTC](https://discourse.slicer.org/t/get-cell-indices-in-exported-mesh-corresponding-to-each-segment/15437 "2021-01-13T19:00:14Z")

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Dear 3D Slicer Team, I have generated a volumetric heart mesh and now need to extract certain geometry information, that is I want to export indices of nodes on the epicardium, indices of nodes on the left ventricular s…

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## ["Volume Information" in "Volumes" module not updated for modified volumes](https://discourse.slicer.org/t/volume-information-in-volumes-module-not-updated-for-modified-volumes/12856)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 10\
**Last updated:** [January 13, 2021, 6:55pm UTC](https://discourse.slicer.org/t/volume-information-in-volumes-module-not-updated-for-modified-volumes/12856 "2021-01-13T18:55:37Z")

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When I clone a volume node and then modify the array values, the “Volume Information” section shows outdated information and I can’t find a way to get it to update. volNode = getNode('vtkMRMLScalarVolume1') newVolNode =…

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## [What is the difference between these transforms](https://discourse.slicer.org/t/what-is-the-difference-between-these-transforms/15502)

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**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 1\
**Last updated:** [January 13, 2021, 2:18pm UTC](https://discourse.slicer.org/t/what-is-the-difference-between-these-transforms/15502 "2021-01-13T14:18:58Z")

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Dear Mr, what is the difference between these transforms.every time i just know how to use the last one

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## [Need help for segment nasal cavity and turbinates](https://discourse.slicer.org/t/need-help-for-segment-nasal-cavity-and-turbinates/15487)

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**Author:** [@compi25](https://discourse.slicer.org/u/compi25)\
**Replies:** 1\
**Last updated:** [January 13, 2021, 1:29pm UTC](https://discourse.slicer.org/t/need-help-for-segment-nasal-cavity-and-turbinates/15487 "2021-01-13T13:29:57Z")

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Hi! I have a sinonasal CT and I need to segment the nasal cavities and turbinates in order to get the volume of them. Could someone help me? Thanks!

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## [Watershed segmentation](https://discourse.slicer.org/t/watershed-segmentation/15499)

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**Author:** [@Ester\_RG](https://discourse.slicer.org/u/Ester_RG)\
**Replies:** 1\
**Last updated:** [January 13, 2021, 12:33pm UTC](https://discourse.slicer.org/t/watershed-segmentation/15499 "2021-01-13T12:33:42Z")

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Hi there! I would like to know how Watershed algorithm computes on 3D images, like CT images using Segment Editor extension. Does it go through every 2D layer on the register or does it computes all the image register? S…

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## [Converting labelmapvolume node with only one label to segmentation node does not use colour table](https://discourse.slicer.org/t/converting-labelmapvolume-node-with-only-one-label-to-segmentation-node-does-not-use-colour-table/13833)

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**Author:** [@Vincent\_C](https://discourse.slicer.org/u/Vincent_C)\
**Replies:** 7\
**Last updated:** [January 13, 2021, 7:51am UTC](https://discourse.slicer.org/t/converting-labelmapvolume-node-with-only-one-label-to-segmentation-node-does-not-use-colour-table/13833 "2021-01-13T07:51:14Z")

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Hi all, I have a labelmap volume node with only 1 label and I am using a custom LUT for it. When I convert the labelmap volume node to a segmentation node, the segment inside does not respect the colour table name for t…

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## [Image contrast adjustment](https://discourse.slicer.org/t/image-contrast-adjustment/15481)

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**Author:** [@geokpap](https://discourse.slicer.org/u/geokpap)\
**Replies:** 4\
**Last updated:** [January 13, 2021, 1:49am UTC](https://discourse.slicer.org/t/image-contrast-adjustment/15481 "2021-01-13T01:49:20Z")

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Hi, I’ve noticed that in the latest versions of 3DSlicer, I can’t use the left mouse click to adjust the contrast of an image. This was possible in earlier versions. Please advice. Thanks

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## [How can I change the GrowCut's pseudocode?](https://discourse.slicer.org/t/how-can-i-change-the-growcuts-pseudocode/15467)

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**Author:** [@Anonymous1](https://discourse.slicer.org/u/Anonymous1)\
**Replies:** 2\
**Last updated:** [January 12, 2021, 10:34pm UTC](https://discourse.slicer.org/t/how-can-i-change-the-growcuts-pseudocode/15467 "2021-01-12T22:34:10Z")

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Hi! I want to change the GrowCut’s pseudocode in Slicer 3D so that it has another function or an ‘extra’. This is the pseudocode that I need to change in Python. Does anyone know how I can do it? Thank you

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## [Error with export rt dicom](https://discourse.slicer.org/t/error-with-export-rt-dicom/15457)

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**Author:** [@jeongsu](https://discourse.slicer.org/u/jeongsu)\
**Replies:** 3\
**Last updated:** [January 12, 2021, 4:51pm UTC](https://discourse.slicer.org/t/error-with-export-rt-dicom/15457 "2021-01-12T16:51:46Z")

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hi, i\`m js I want to get dicom files with my rt segmentation, data - Dicom export I did this procedure, but I got cracked files. How can I get solution about this error? please help me… thank you.

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## [DICOM image info](https://discourse.slicer.org/t/dicom-image-info/15464)

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**Author:** [@Ash\_Alarfaj](https://discourse.slicer.org/u/Ash_Alarfaj)\
**Replies:** 2\
**Last updated:** [January 12, 2021, 3:10am UTC](https://discourse.slicer.org/t/dicom-image-info/15464 "2021-01-12T03:10:21Z")

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Operating system: MAC Slicer version: 4.11 OR 4.10.2 Expected behavior: show image field of view and reconstructed matrix size. Actual behavior: can not find these info in DICOM or image volume

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## [Make reformat become a native plane (axial, coronal or sagittal)](https://discourse.slicer.org/t/make-reformat-become-a-native-plane-axial-coronal-or-sagittal/15411)

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**Author:** [@Masteling](https://discourse.slicer.org/u/Masteling)\
**Replies:** 5\
**Last updated:** [January 11, 2021, 3:28pm UTC](https://discourse.slicer.org/t/make-reformat-become-a-native-plane-axial-coronal-or-sagittal/15411 "2021-01-11T15:28:41Z")

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I have a collection of Ultrasound files in .l3d format that I converted to .mhd and .raw. When converting the .l3d files I have automated the changes in image spacing (because of scaling) and have applied transforms so …

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## [Questions about Virtual Reality Implementation on Slicer](https://discourse.slicer.org/t/questions-about-virtual-reality-implementation-on-slicer/6432)

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**Author:** [@triple\_axel](https://discourse.slicer.org/u/triple_axel)\
**Replies:** 16\
**Last updated:** [January 11, 2021, 10:29am UTC](https://discourse.slicer.org/t/questions-about-virtual-reality-implementation-on-slicer/6432 "2021-01-11T10:29:54Z")

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Hi, I have a few questions about Virtual Reality Implementation on Slicer I have a volume rendering that will not appear on Virtual Reality even though it appears on my 3D views. Why is this so and how do I fix it? Ex…

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## [Feature modification of Fiducial Registration wizard](https://discourse.slicer.org/t/feature-modification-of-fiducial-registration-wizard/15400)

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**Author:** [@11141](https://discourse.slicer.org/u/11141)\
**Replies:** 3\
**Last updated:** [January 11, 2021, 6:09am UTC](https://discourse.slicer.org/t/feature-modification-of-fiducial-registration-wizard/15400 "2021-01-11T06:09:39Z")

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Hi, all. I am a student working at KIST(Korea Institute of Science and Technology). I have a question. I wanted to find out through internet search, but I failed. Although the Fiducial Registration Wizard is a C++ mo…

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## [Unable to run SimpleFilters](https://discourse.slicer.org/t/unable-to-run-simplefilters/15441)

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**Author:** [@Michal\_Lenik](https://discourse.slicer.org/u/Michal_Lenik)\
**Replies:** 5\
**Last updated:** [January 10, 2021, 6:06pm UTC](https://discourse.slicer.org/t/unable-to-run-simplefilters/15441 "2021-01-10T18:06:47Z")

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When I try to run Simple Filters the window shows only help&development system reported error that Simple Filters widget has no representation. Could I ask for help?

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## [Length of centerline curve as label name in 3D view?](https://discourse.slicer.org/t/length-of-centerline-curve-as-label-name-in-3d-view/15435)

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**Author:** [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Replies:** 1\
**Last updated:** [January 10, 2021, 7:36pm UTC](https://discourse.slicer.org/t/length-of-centerline-curve-as-label-name-in-3d-view/15435 "2021-01-10T19:36:30Z")

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Hi, Is it possible to display a label (with name and length) of a centerline curve in 3D view? This would be very helpful for our vascular surgeons …

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## [Nearby fiducial points at different slices](https://discourse.slicer.org/t/nearby-fiducial-points-at-different-slices/15309)

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**Author:** [@FatihSogukpinar](https://discourse.slicer.org/u/FatihSogukpinar)\
**Replies:** 7\
**Last updated:** [January 9, 2021, 4:12am UTC](https://discourse.slicer.org/t/nearby-fiducial-points-at-different-slices/15309 "2021-01-09T04:12:56Z")

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Hi all, I have a set of fiducial points which have the same anterior/posterior coordinates (but different right/left and sagittal coordinates) and I want to be able to show them in the same coronal slice. Despite that …

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## [Creating a screenshot by script](https://discourse.slicer.org/t/creating-a-screenshot-by-script/15328)

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**Author:** [@Justin](https://discourse.slicer.org/u/Justin)\
**Replies:** 11\
**Last updated:** [January 10, 2021, 10:59am UTC](https://discourse.slicer.org/t/creating-a-screenshot-by-script/15328 "2021-01-10T10:59:48Z")

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Dear all, I have a question concerning creating a screenshot using ScreenCapture. I found the relevant script on the repository on the website viewNodeID = 'vtkMRMLSliceNodeRed' import ScreenCapture cap = ScreenCaptur…

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## [Segment Mesher - meshing parameters for older version](https://discourse.slicer.org/t/segment-mesher-meshing-parameters-for-older-version/15430)

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**Author:** [@danpak94](https://discourse.slicer.org/u/danpak94)\
**Replies:** 0\
**Last updated:** [January 10, 2021, 6:11am UTC](https://discourse.slicer.org/t/segment-mesher-meshing-parameters-for-older-version/15430 "2021-01-10T06:11:34Z")

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Hello, I am trying to use Segment Mesher, and I am unable to adjust additional parameters other than “–scale 0.5 --multiplier 2 --grading 5”. e.g. I want to change try changing --feature\_scaling, --sampling\_rate, --elem…

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## [The perfect STL file for the 3D print job](https://discourse.slicer.org/t/the-perfect-stl-file-for-the-3d-print-job/15418)

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**Author:** [@Andreas](https://discourse.slicer.org/u/Andreas)\
**Replies:** 1\
**Last updated:** [January 9, 2021, 3:38pm UTC](https://discourse.slicer.org/t/the-perfect-stl-file-for-the-3d-print-job/15418 "2021-01-09T15:38:02Z")

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Hello everybody, I would like to know how to create the perfect STL file for the 3D printing job. In my previous 3D vessel models, the triangles (polygons) are still clearly visible on the surface network. (Python codi…

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## [IDP.Generic virus in SlicerApp-real.exe](https://discourse.slicer.org/t/idp-generic-virus-in-slicerapp-real-exe/15413)

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**Author:** [@Biomodelos\_3D](https://discourse.slicer.org/u/Biomodelos_3D)\
**Replies:** 1\
**Last updated:** [January 9, 2021, 4:12am UTC](https://discourse.slicer.org/t/idp-generic-virus-in-slicerapp-real-exe/15413 "2021-01-09T04:12:00Z")

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Avast antivirus shows the attached screen-capture:

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## [Straighten curve and volume in curved mpr](https://discourse.slicer.org/t/straighten-curve-and-volume-in-curved-mpr/15398)

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**Author:** [@yee\_lu](https://discourse.slicer.org/u/yee_lu)\
**Replies:** 1\
**Last updated:** [January 8, 2021, 10:20pm UTC](https://discourse.slicer.org/t/straighten-curve-and-volume-in-curved-mpr/15398 "2021-01-08T22:20:11Z")

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hello everyone! When i use curved planner reformat and I straighten the curve and volume , I got this: How can I get a regular line? Thanks in advance.

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