# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=422

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

**Page:** 423

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## [How to export stl files ?](https://discourse.slicer.org/t/how-to-export-stl-files/3041)

<div class="topic-metadata">

**Author:** [@Naubru340](https://discourse.slicer.org/u/Naubru340)\
**Replies:** 2\
**Last updated:** [June 1, 2018, 5:48pm UTC](https://discourse.slicer.org/t/how-to-export-stl-files/3041 "2018-06-01T17:48:06Z")

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Operating system: Slicer version: Expected behavior: Actual behavior: Hello, I’ ve just download Slicer two days ago to create stl files using dicom files. When I want to save and export, the option stl doesn’t appea…

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## [Open files from multiple subdirectories](https://discourse.slicer.org/t/open-files-from-multiple-subdirectories/3035)

<div class="topic-metadata">

**Author:** [@ladybug](https://discourse.slicer.org/u/ladybug)\
**Replies:** 1\
**Last updated:** [June 1, 2018, 1:47pm UTC](https://discourse.slicer.org/t/open-files-from-multiple-subdirectories/3035 "2018-06-01T13:47:52Z")

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Hello, I’m trying to open files with extension .nrrd from multiple subfolders. So far I only got to open one file at a time. This is the working version: dir\_path = qt.QFileDialog.getOpenFileName(self.parent, ‘Open fil…

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## [How can I save my work for later on?](https://discourse.slicer.org/t/how-can-i-save-my-work-for-later-on/2960)

<div class="topic-metadata">

**Author:** [@Ash\_Alarfaj](https://discourse.slicer.org/u/Ash_Alarfaj)\
**Replies:** 1\
**Last updated:** [May 29, 2018, 2:50pm UTC](https://discourse.slicer.org/t/how-can-i-save-my-work-for-later-on/2960 "2018-05-29T14:50:38Z")

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Operating system: windows Slicer version: 4.9 Expected behavior: Actual behavior: I didn’t finish my segmentation and if I need to close the programme, and return to same work to continue editing on it. what is the b…

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## [Separate Save and Export features](https://discourse.slicer.org/t/separate-save-and-export-features/3018)

<div class="topic-metadata">

**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 3\
**Last updated:** [May 31, 2018, 12:10am UTC](https://discourse.slicer.org/t/separate-save-and-export-features/3018 "2018-05-31T00:10:17Z")

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Users are often confused by the complexity of save dialog and that they have to choose file formats and decide what files to overwrite. Saving to MRB simplifies things: everything is saved, and only a single file is used…

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## [Creating Atlas of Brain MRI](https://discourse.slicer.org/t/creating-atlas-of-brain-mri/3023)

<div class="topic-metadata">

**Author:** [@teresababy](https://discourse.slicer.org/u/teresababy)\
**Replies:** 1\
**Last updated:** [May 31, 2018, 12:00am UTC](https://discourse.slicer.org/t/creating-atlas-of-brain-mri/3023 "2018-05-31T00:00:07Z")

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Operating system: Windows 7 Slicer version: 4.8.1 I am not sure how to begin this project. I have an MRI of my brain and I would like to segment and label all of the important anatomical structures, creating an atlas. …

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## [Shift RT dose gamma comparison with differents CT - CBCT isocenter acquisition](https://discourse.slicer.org/t/shift-rt-dose-gamma-comparison-with-differents-ct-cbct-isocenter-acquisition/2803)

<div class="topic-metadata">

**Author:** [@Aurelien\_Badey](https://discourse.slicer.org/u/Aurelien_Badey)\
**Replies:** 7\
**Last updated:** [May 30, 2018, 8:20pm UTC](https://discourse.slicer.org/t/shift-rt-dose-gamma-comparison-with-differents-ct-cbct-isocenter-acquisition/2803 "2018-05-30T20:20:25Z")

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Operating system: Windows 7 Slicer version: 4.8.1 Hello, I have questions about gamma comparison module (slicer 4.8.1), I have a shift between two image series CT and cone beam CT (with different acquisition isocenter…

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## [Issues with Slicer Elastix](https://discourse.slicer.org/t/issues-with-slicer-elastix/3025)

<div class="topic-metadata">

**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 1\
**Last updated:** [May 30, 2018, 7:43pm UTC](https://discourse.slicer.org/t/issues-with-slicer-elastix/3025 "2018-05-30T19:43:16Z")

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OS: Windows 10 Slicer version 5/23 through current nightly I am running into several issues with the Elastix General registration. As far back as the 4/24 installer, I am getting this error on any registration attempt…

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## [Brain Cortex Volume Rendering](https://discourse.slicer.org/t/brain-cortex-volume-rendering/3020)

<div class="topic-metadata">

**Author:** [@carba86](https://discourse.slicer.org/u/carba86)\
**Replies:** 1\
**Last updated:** [May 30, 2018, 4:21pm UTC](https://discourse.slicer.org/t/brain-cortex-volume-rendering/3020 "2018-05-30T16:21:10Z")

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Hi everyone, I am trying to do a volume render of the human brain cortex. I do not know if Slicer is the right tool to do it. A good result would be something like this. Thank you very much in advanced

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## [How to build 3D Slicer for Raspberry?](https://discourse.slicer.org/t/how-to-build-3d-slicer-for-raspberry/2843)

<div class="topic-metadata">

**Author:** [@AhmadHossam10](https://discourse.slicer.org/u/AhmadHossam10)\
**Replies:** 5\
**Last updated:** [May 30, 2018, 3:15pm UTC](https://discourse.slicer.org/t/how-to-build-3d-slicer-for-raspberry/2843 "2018-05-30T15:15:55Z")

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How to build slicer on raspberri Pi having rasbpian OS?

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## [Hex Meshing Extension](https://discourse.slicer.org/t/hex-meshing-extension/2996)

<div class="topic-metadata">

**Author:** [@HarishRRao](https://discourse.slicer.org/u/HarishRRao)\
**Replies:** 4\
**Last updated:** [May 29, 2018, 4:46pm UTC](https://discourse.slicer.org/t/hex-meshing-extension/2996 "2018-05-29T16:46:50Z")

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Hello, I discovered that a hex-meshing extension called IA-FEMesh was available in the Slicer version 3.6 and I do not see it anymore. Is it discontinued or is there another extension which can perform hex meshing of se…

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## [Mapping a function onto image volume](https://discourse.slicer.org/t/mapping-a-function-onto-image-volume/2925)

<div class="topic-metadata">

**Author:** [@Hamburgerfinger](https://discourse.slicer.org/u/Hamburgerfinger)\
**Replies:** 1\
**Last updated:** [May 29, 2018, 3:53pm UTC](https://discourse.slicer.org/t/mapping-a-function-onto-image-volume/2925 "2018-05-29T15:53:27Z")

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Is there an easy way to sample an analytical function in 3D space with Slicer? Say I want to represent a simple function like f(r) = exp(-r) as an image volume. Thanks!

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## [Control window disappear](https://discourse.slicer.org/t/control-window-disappear/2966)

<div class="topic-metadata">

**Author:** [@Ash\_Alarfaj](https://discourse.slicer.org/u/Ash_Alarfaj)\
**Replies:** 1\
**Last updated:** [May 29, 2018, 2:39pm UTC](https://discourse.slicer.org/t/control-window-disappear/2966 "2018-05-29T14:39:57Z")

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Operating system:window Slicer version:4.9 Expected behavior: Actual behavior: It is an important issue, sometimes I close the control window then I can’t return it!! lose%20cotrol%20window|690x387

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## [How to save nrrd as a dicom file?](https://discourse.slicer.org/t/how-to-save-nrrd-as-a-dicom-file/2952)

<div class="topic-metadata">

**Author:** [@ElonKou](https://discourse.slicer.org/u/ElonKou)\
**Replies:** 6\
**Last updated:** [May 29, 2018, 9:35am UTC](https://discourse.slicer.org/t/how-to-save-nrrd-as-a-dicom-file/2952 "2018-05-29T09:35:40Z")

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After I used the brainsFit plug-in for slicer to register two dicoms, I got a node object. I plan to export this node to show it to others, but I didn’t find how to use code to convert node object to dicom series file. …

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## [Color another surface](https://discourse.slicer.org/t/color-another-surface/2860)

<div class="topic-metadata">

**Author:** [@Boyce\_Doyle](https://discourse.slicer.org/u/Boyce_Doyle)\
**Replies:** 4\
**Last updated:** [May 29, 2018, 3:12am UTC](https://discourse.slicer.org/t/color-another-surface/2860 "2018-05-29T03:12:35Z")

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Operating system:Unbuntu16.04.3 Slicer version:4.8.1-linux-amd64 Expected behavior:I have two 3d-mri images(assume they are a and b) and a segmentation from volume a.I want to using the gray intensity from b to make a…

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## [Why this Runtime Error (microsoft visual c++ run time library) thappen?](https://discourse.slicer.org/t/why-this-runtime-error-microsoft-visual-c-run-time-library-thappen/2016)

<div class="topic-metadata">

**Author:** [@HajarMoradmand](https://discourse.slicer.org/u/HajarMoradmand)\
**Replies:** 3\
**Last updated:** [February 3, 2018, 10:29pm UTC](https://discourse.slicer.org/t/why-this-runtime-error-microsoft-visual-c-run-time-library-thappen/2016 "2018-02-03T22:29:35Z")

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Hi, when I want to run a 3Dslicer, I face to this error box . I would be really appreciated it if somebody could let me know why this error happened and how I can fix it. Thank you in advance.

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## [3D slicer for MAC cannot install slicer extensions](https://discourse.slicer.org/t/3d-slicer-for-mac-cannot-install-slicer-extensions/2945)

<div class="topic-metadata">

**Author:** [@danceward](https://discourse.slicer.org/u/danceward)\
**Replies:** 3\
**Last updated:** [May 28, 2018, 6:22pm UTC](https://discourse.slicer.org/t/3d-slicer-for-mac-cannot-install-slicer-extensions/2945 "2018-05-28T18:22:38Z")

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Operating system:Mac OS X Slicer version:4.8.1 Expected behavior:install slicer extensions Actual behavior:Extensions can not be installed

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## ["Bookmark" or save camera view settings](https://discourse.slicer.org/t/bookmark-or-save-camera-view-settings/2935)

<div class="topic-metadata">

**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 6\
**Last updated:** [May 28, 2018, 6:21pm UTC](https://discourse.slicer.org/t/bookmark-or-save-camera-view-settings/2935 "2018-05-28T18:21:20Z")

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Hey guys, Is it possible to “bookmark” or save scene camera view settings from the 3D view? I have a specimen where I’d like to show people a few representative views. It would useful to be able to have a list of views …

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## [Volume rendering crop ROI - inverse?](https://discourse.slicer.org/t/volume-rendering-crop-roi-inverse/2950)

<div class="topic-metadata">

**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 2\
**Last updated:** [May 28, 2018, 3:14pm UTC](https://discourse.slicer.org/t/volume-rendering-crop-roi-inverse/2950 "2018-05-28T15:14:28Z")

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Hey guys, Right now, the volume rendering crop ROI excludes everything outside the ROI. Does VTK support the opposite? Meaning, exclude everything INSIDE the ROI? This would be useful for certain kinds of cutaways. I kn…

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## [How do i smooth the shape of a structure?](https://discourse.slicer.org/t/how-do-i-smooth-the-shape-of-a-structure/2877)

<div class="topic-metadata">

**Author:** [@Jana.az](https://discourse.slicer.org/u/Jana.az)\
**Replies:** 7\
**Last updated:** [May 28, 2018, 1:40pm UTC](https://discourse.slicer.org/t/how-do-i-smooth-the-shape-of-a-structure/2877 "2018-05-28T13:40:57Z")

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How do i smooth the shape of a structure? I have imported a sphere from brainlab iplan rt to 3D slicer so i can calculate the surface area. But for a specific radius, in 3D slicer the surface area is bigger than the theo…

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## [2D views and 3D model transformation](https://discourse.slicer.org/t/2d-views-and-3d-model-transformation/2920)

<div class="topic-metadata">

**Author:** [@Dedy\_Ariansyah](https://discourse.slicer.org/u/Dedy_Ariansyah)\
**Replies:** 8\
**Last updated:** [May 28, 2018, 1:15pm UTC](https://discourse.slicer.org/t/2d-views-and-3d-model-transformation/2920 "2018-05-28T13:15:22Z")

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Hello, In Slicer, it is possible to display a 3D model aligned with 2D slices view in sagittal, coronal, and axial view. I am trying to achieve the same visualization in the external software by exporting the model …

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## [Relationship between space and SPHARM coefficients](https://discourse.slicer.org/t/relationship-between-space-and-spharm-coefficients/2948)

<div class="topic-metadata">

**Author:** [@doganarda](https://discourse.slicer.org/u/doganarda)\
**Replies:** 0\
**Last updated:** [May 28, 2018, 7:32am UTC](https://discourse.slicer.org/t/relationship-between-space-and-spharm-coefficients/2948 "2018-05-28T07:32:29Z")

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Greetings everyone, I have (probably a dumb) question - not really related to the software but more related to the concept of SPHARM coefficients. I am using SPHARM-PDM to extract SPHARM coefficients of various subcorti…

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## [Using model maker module](https://discourse.slicer.org/t/using-model-maker-module/2946)

<div class="topic-metadata">

**Author:** [@HwangJeongUk](https://discourse.slicer.org/u/HwangJeongUk)\
**Replies:** 3\
**Last updated:** [May 28, 2018, 5:29am UTC](https://discourse.slicer.org/t/using-model-maker-module/2946 "2018-05-28T05:29:11Z")

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Operating system: window 7 Slicer version: 4.9.0 Expected behavior: Actual behavior: The model was created using the model maker module. However, the information disappeared in the CT 2D viewer. What’s the reason? …

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## [Convert loaded DCM file to stl, export stl](https://discourse.slicer.org/t/convert-loaded-dcm-file-to-stl-export-stl/2917)

<div class="topic-metadata">

**Author:** [@HwangJeongUk](https://discourse.slicer.org/u/HwangJeongUk)\
**Replies:** 2\
**Last updated:** [May 27, 2018, 6:55pm UTC](https://discourse.slicer.org/t/convert-loaded-dcm-file-to-stl-export-stl/2917 "2018-05-27T18:55:27Z")

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I have loaded the dcm file. (Version 4.9) How do I make 2D information 3D ? And how do I extract the created 3D file to stl?

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## [Scissors tool not working to remove unwanted areas 3D Slicer 4.9.0](https://discourse.slicer.org/t/scissors-tool-not-working-to-remove-unwanted-areas-3d-slicer-4-9-0/2943)

<div class="topic-metadata">

**Author:** [@LakiKari](https://discourse.slicer.org/u/LakiKari)\
**Replies:** 3\
**Last updated:** [May 27, 2018, 6:39pm UTC](https://discourse.slicer.org/t/scissors-tool-not-working-to-remove-unwanted-areas-3d-slicer-4-9-0/2943 "2018-05-27T18:39:38Z")

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Hi there, I have been trying to segment a lower leg CT dataset and have been able to create a volume through importing the DICOM data → volume rendering → crop volume → editor to chose the Bone (2) for the threshold aff…

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## [slicer not loading properly](https://discourse.slicer.org/t/slicer-not-loading-properly/2929)

<div class="topic-metadata">

**Author:** [@bharat](https://discourse.slicer.org/u/bharat)\
**Replies:** 2\
**Last updated:** [May 25, 2018, 1:14pm UTC](https://discourse.slicer.org/t/slicer-not-loading-properly/2929 "2018-05-25T13:14:51Z")

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Operating system: Slicer version: 4.8 Expected behavior: running normal mode Actual behavior: running advanced mode The message detail is: Exception thrown in event: d:\\d\\p\\slicer-481-package\\itkv4\\modules\\io\\imageb…

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## [Slicer4.7 build error in Win7-64bit Vs2013](https://discourse.slicer.org/t/slicer4-7-build-error-in-win7-64bit-vs2013/2927)

<div class="topic-metadata">

**Author:** [@brotherher](https://discourse.slicer.org/u/brotherher)\
**Replies:** 0\
**Last updated:** [May 25, 2018, 4:37am UTC](https://discourse.slicer.org/t/slicer4-7-build-error-in-win7-64bit-vs2013/2927 "2018-05-25T04:37:06Z")

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Hi all, I tried to build Slicer 4.7 in debug mode with the VS 2013, and I got the following errors: 19\>------ Rebuild All started: Project: EMSegment, Configuration: Debug x64 ------ 19\> Building Custom Rule D:/my…

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## [Issues Using SegmentMesher Extension](https://discourse.slicer.org/t/issues-using-segmentmesher-extension/2924)

<div class="topic-metadata">

**Author:** [@gswai123](https://discourse.slicer.org/u/gswai123)\
**Replies:** 1\
**Last updated:** [May 24, 2018, 8:33pm UTC](https://discourse.slicer.org/t/issues-using-segmentmesher-extension/2924 "2018-05-24T20:33:07Z")

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Operating system: macOS High Sierra (10.13.4) Slicer version: 4.9.0 (Nightly Build) Hello, I am very new to 3D Slicer (this is my third day using it). I want to be able to make a volumetric mesh from a brain scan for …

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## [Import volume by projections](https://discourse.slicer.org/t/import-volume-by-projections/2871)

<div class="topic-metadata">

**Author:** [@Svensen7](https://discourse.slicer.org/u/Svensen7)\
**Replies:** 7\
**Last updated:** [May 24, 2018, 7:27pm UTC](https://discourse.slicer.org/t/import-volume-by-projections/2871 "2018-05-24T19:27:01Z")

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I have three dcm files for each projection. Is it a way to open them together ? Because Slicer loads only one file, rather then three.

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## [Modifying Surface Model](https://discourse.slicer.org/t/modifying-surface-model/2922)

<div class="topic-metadata">

**Author:** [@Hikmat](https://discourse.slicer.org/u/Hikmat)\
**Replies:** 0\
**Last updated:** [May 24, 2018, 6:49pm UTC](https://discourse.slicer.org/t/modifying-surface-model/2922 "2018-05-24T18:49:34Z")

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Operating system: Windows 10 Slicer version: 4.8.1 I have a Model - it is a surface mesh (meaning it is just comprised of a surface). I would like to modify my model so that it is “solidified” (meaning it is no longer…

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## [Applying the Grow from Seeds Effect to only selected slices](https://discourse.slicer.org/t/applying-the-grow-from-seeds-effect-to-only-selected-slices/2855)

<div class="topic-metadata">

**Author:** [@cphillips](https://discourse.slicer.org/u/cphillips)\
**Replies:** 3\
**Last updated:** [May 24, 2018, 6:18pm UTC](https://discourse.slicer.org/t/applying-the-grow-from-seeds-effect-to-only-selected-slices/2855 "2018-05-24T18:18:57Z")

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Operating system: Mac OS High Sierra Slicer version: 4.8.1 I am attempting to use the Grow from seeds effect (in the Label editor) to segment out and calculate the volume of an photothrombotically induced infarct regio…

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