# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=315

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

**Page:** 316

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## [Segment out enamel and dentin off of a micro CT scan?](https://discourse.slicer.org/t/segment-out-enamel-and-dentin-off-of-a-micro-ct-scan/14210)

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**Author:** [@simple](https://discourse.slicer.org/u/simple)\
**Replies:** 4\
**Last updated:** [October 23, 2020, 6:23pm UTC](https://discourse.slicer.org/t/segment-out-enamel-and-dentin-off-of-a-micro-ct-scan/14210 "2020-10-23T18:23:50Z")

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Hello, I’m just wondering if anyone is able to segment out enamel and dentin with 3D slicer and been able to take volumetric measurements of the enamel and dentin? Could someone please show me how to do that on slicer? …

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## [Add unit to the fcsv header](https://discourse.slicer.org/t/add-unit-to-the-fcsv-header/13716)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 3\
**Last updated:** [October 23, 2020, 3:51pm UTC](https://discourse.slicer.org/t/add-unit-to-the-fcsv-header/13716 "2020-10-23T15:51:18Z")

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While we complain that formats like OBJ and STL suffers from lack of explicit unit size description, a similar problem exists for fcsv and as mrk.json as far as I can tell. There is no field which tells what the reported…

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## [Can't export segmentation to binary labelmap in 4.11 Ubuntu 25.05.2020 version](https://discourse.slicer.org/t/cant-export-segmentation-to-binary-labelmap-in-4-11-ubuntu-25-05-2020-version/14197)

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**Author:** [@l.znaniecki](https://discourse.slicer.org/u/l.znaniecki)\
**Replies:** 16\
**Last updated:** [October 23, 2020, 4:20am UTC](https://discourse.slicer.org/t/cant-export-segmentation-to-binary-labelmap-in-4-11-ubuntu-25-05-2020-version/14197 "2020-10-23T04:20:31Z")

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Hi, As in the title, I can’t export my segmentation to binary labelmap in 4.11 Ubuntu. It works perfectly in Windows & Mac, not in Ubuntu. Please help. Thanks in advance. Lukasz

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## [Configure segmentation defaults](https://discourse.slicer.org/t/configure-segmentation-defaults/14207)

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**Author:** [@CaptainR](https://discourse.slicer.org/u/CaptainR)\
**Replies:** 1\
**Last updated:** [October 23, 2020, 1:53am UTC](https://discourse.slicer.org/t/configure-segmentation-defaults/14207 "2020-10-23T01:53:00Z")

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I successfully changed the 3D view background color and the left-click and drag to window/level when starting slicer. Unfortunately, I can’t see what goes wrong with the following (copied and paste directly from notepad…

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## [How to change the format of the Column and CellText of a table](https://discourse.slicer.org/t/how-to-change-the-format-of-the-column-and-celltext-of-a-table/14189)

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**Author:** [@jj31](https://discourse.slicer.org/u/jj31)\
**Replies:** 2\
**Last updated:** [October 23, 2020, 12:25am UTC](https://discourse.slicer.org/t/how-to-change-the-format-of-the-column-and-celltext-of-a-table/14189 "2020-10-23T00:25:50Z")

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I would like to change the format of the font (bold, size, family, etc) for both the title and the CellText of a TableNode. I would also like to fix the width of the Table (something like Column width). Using the lines …

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## [Contouring the outer surface of a CT image](https://discourse.slicer.org/t/contouring-the-outer-surface-of-a-ct-image/13940)

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**Author:** [@aseman](https://discourse.slicer.org/u/aseman)\
**Replies:** 6\
**Last updated:** [October 22, 2020, 9:14pm UTC](https://discourse.slicer.org/t/contouring-the-outer-surface-of-a-ct-image/13940 "2020-10-22T21:14:20Z")

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Slicer version: 4.10.1 Hi 3D Slicer Experts and all I have a CT image and I only want to contour its outside surface (like Figure A). I used Draw and Paint in the Segment Editor module. But it includes the inside area,…

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## [Always display annotation or model on top in 3D view](https://discourse.slicer.org/t/always-display-annotation-or-model-on-top-in-3d-view/9121)

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**Author:** [@Prashant\_Pandey](https://discourse.slicer.org/u/Prashant_Pandey)\
**Replies:** 18\
**Last updated:** [October 22, 2020, 12:16pm UTC](https://discourse.slicer.org/t/always-display-annotation-or-model-on-top-in-3d-view/9121 "2020-10-22T12:16:37Z")

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I’m using volume rendering to show a CT volume being cut with a tracked tool. The scene also contains a sugical target, which is represented by a cylinder model and an annotation ruler. Is it possible to show the model a…

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## [Save the latest version](https://discourse.slicer.org/t/save-the-latest-version/14194)

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**Author:** [@Andreas](https://discourse.slicer.org/u/Andreas)\
**Replies:** 1\
**Last updated:** [October 22, 2020, 3:01am UTC](https://discourse.slicer.org/t/save-the-latest-version/14194 "2020-10-22T03:01:18Z")

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Which files do I need later to save the latest (segmented) version? (Image) I usually save all files so that no data is lost, but this usually takes a long time and takes up a lot of storage space. (with slicer suppo…

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## [Getting an error running ExtractSkin.py](https://discourse.slicer.org/t/getting-an-error-running-extractskin-py/14133)

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**Author:** [@snish1](https://discourse.slicer.org/u/snish1)\
**Replies:** 3\
**Last updated:** [October 22, 2020, 2:47am UTC](https://discourse.slicer.org/t/getting-an-error-running-extractskin-py/14133 "2020-10-22T02:47:05Z")

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Operating system:Windows10 Slicer version:4.1120200930 Hi. I am a novice and learning scripting slicer. I copied lassoan’s ExtractSkin.py to Python Interactor and got Error for line 41: surfaceMesh = segmentati…

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## [Modify additional DICOM tags in export](https://discourse.slicer.org/t/modify-additional-dicom-tags-in-export/13830)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 7\
**Last updated:** [October 22, 2020, 2:43am UTC](https://discourse.slicer.org/t/modify-additional-dicom-tags-in-export/13830 "2020-10-22T02:43:25Z")

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Hello, I use the “DICOM Export” feature from right clicking on a volume in the Data module frequently to output modified volumes in a format readable by other medical devices. It is very helpful that several fields are f…

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## [Translate an input data (such as CT) in CLI module](https://discourse.slicer.org/t/translate-an-input-data-such-as-ct-in-cli-module/14192)

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**Author:** [@aseman](https://discourse.slicer.org/u/aseman)\
**Replies:** 1\
**Last updated:** [October 21, 2020, 8:31pm UTC](https://discourse.slicer.org/t/translate-an-input-data-such-as-ct-in-cli-module/14192 "2020-10-21T20:31:47Z")

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Slicer version: 4.10.1 Hi 3D Slicer experts and all Some modules, such as Gaussian Blur Image Filter, have parameter set that, when I set the parameters ( for example sigma=1, input volume: CT image), the command is sh…

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## [building 3D Slicer on Mac OS Catalina ](https://discourse.slicer.org/t/building-3d-slicer-on-mac-os-catalina/14187)

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**Author:** [@zolfagha](https://discourse.slicer.org/u/zolfagha)\
**Replies:** 1\
**Last updated:** [October 21, 2020, 2:27pm UTC](https://discourse.slicer.org/t/building-3d-slicer-on-mac-os-catalina/14187 "2020-10-21T14:27:05Z")

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Hi there, I am missing some segmentation effects such as “Local Threshold” when I install 3D Slicer via .dmg on my Mac OS Catalina 10.15.5. How can I add the full range of segmentation effects to my local installation? …

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## [Application is damaged - green horizontal lines](https://discourse.slicer.org/t/application-is-damaged-green-horizontal-lines/14186)

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**Author:** [@Aoz](https://discourse.slicer.org/u/Aoz)\
**Replies:** 1\
**Last updated:** [October 21, 2020, 1:59pm UTC](https://discourse.slicer.org/t/application-is-damaged-green-horizontal-lines/14186 "2020-10-21T13:59:09Z")

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Hi, Since one week, the rendering of the app is really damaged: The menus are well rendered: I do not have that issue with other software (even incl 3D rendering). Did anyone already see that? Thanks for any sup…

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## [Bspline transform multiresolution type mismatch](https://discourse.slicer.org/t/bspline-transform-multiresolution-type-mismatch/14185)

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**Author:** [@MachadoL](https://discourse.slicer.org/u/MachadoL)\
**Replies:** 0\
**Last updated:** [October 21, 2020, 1:50pm UTC](https://discourse.slicer.org/t/bspline-transform-multiresolution-type-mismatch/14185 "2020-10-21T13:50:55Z")

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Hello, everyone. I am carrying a multistage and multi-resolution deformable registration pipeline. I start with 3D rigid transform. The transform result I plug into the CompositTransform object. In the next stage I us…

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## [3D freehand ultrasound - saving data using sequences](https://discourse.slicer.org/t/3d-freehand-ultrasound-saving-data-using-sequences/14155)

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**Author:** [@LoganWade](https://discourse.slicer.org/u/LoganWade)\
**Replies:** 3\
**Last updated:** [October 21, 2020, 12:28pm UTC](https://discourse.slicer.org/t/3d-freehand-ultrasound-saving-data-using-sequences/14155 "2020-10-21T12:28:57Z")

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Operating system: Windows Slicer version: 4.10.2 Hi, I have been trying to get Slicerigt to work for a about a week now. Things are coming along slowly but I am quite confused what is the best way to save my data. I a…

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## [Problem loading ALL CT DICOM files](https://discourse.slicer.org/t/problem-loading-all-ct-dicom-files/14162)

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**Author:** [@jonne](https://discourse.slicer.org/u/jonne)\
**Replies:** 4\
**Last updated:** [October 21, 2020, 12:00pm UTC](https://discourse.slicer.org/t/problem-loading-all-ct-dicom-files/14162 "2020-10-21T12:00:38Z")

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I have a problem loading all DICOM files. My folder consist of MRI and CT images. Right now mainly interested in the CT images. The folder contains 205 CT images. In the DICOM database only 3 CT images are found. All th…

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## [3D model -\> DICOM/nii conversion](https://discourse.slicer.org/t/3d-model-dicom-nii-conversion/14045)

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**Author:** [@a10227](https://discourse.slicer.org/u/a10227)\
**Replies:** 6\
**Last updated:** [October 21, 2020, 9:17am UTC](https://discourse.slicer.org/t/3d-model-dicom-nii-conversion/14045 "2020-10-21T09:17:07Z")

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Good day, I have raw patient images as well as their segmentations as 3D models. I need to convert segmentations to 3D images so that these converted images are aligned with the patient’s images. Could you please tell …

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## [Does 3dlicer have the function of planning QA and equipment QA for some RT data?](https://discourse.slicer.org/t/does-3dlicer-have-the-function-of-planning-qa-and-equipment-qa-for-some-rt-data/14179)

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**Author:** [@icetomato](https://discourse.slicer.org/u/icetomato)\
**Replies:** 0\
**Last updated:** [October 21, 2020, 8:55am UTC](https://discourse.slicer.org/t/does-3dlicer-have-the-function-of-planning-qa-and-equipment-qa-for-some-rt-data/14179 "2020-10-21T08:55:10Z")

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3dslicer 是否具备一些RT数据的 计划QA和设备QA的功能? 3dslicer 是否具备一些RT数据的 计划QA和设备QA的功能? Does 3dlicer have the function of planning QA and equipment QA for some RT data?

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## [How to use vtk observer mechanism to change qt widgets?](https://discourse.slicer.org/t/how-to-use-vtk-observer-mechanism-to-change-qt-widgets/14178)

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**Author:** [@Chintha\_Siva\_Prasad](https://discourse.slicer.org/u/Chintha_Siva_Prasad)\
**Replies:** 0\
**Last updated:** [October 21, 2020, 8:16am UTC](https://discourse.slicer.org/t/how-to-use-vtk-observer-mechanism-to-change-qt-widgets/14178 "2020-10-21T08:16:06Z")

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How can I use vtk observer mechanism to change qt widgets? I tried with signals/slots mechanism. But the change in widgets was choppy.

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## [Segment registration and transformation](https://discourse.slicer.org/t/segment-registration-and-transformation/13739)

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**Author:** [@Pratik](https://discourse.slicer.org/u/Pratik)\
**Replies:** 11\
**Last updated:** [October 21, 2020, 5:40am UTC](https://discourse.slicer.org/t/segment-registration-and-transformation/13739 "2020-10-21T05:40:30Z")

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Dear all, I am trying to register two geometries in slicer (image attached below) where red is defined as the fixed geometry and grey as moving geometry. When I perform the registration, the end result is multiple t…

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## [How to get the boundaries of a model](https://discourse.slicer.org/t/how-to-get-the-boundaries-of-a-model/14173)

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**Author:** [@jj31](https://discourse.slicer.org/u/jj31)\
**Replies:** 1\
**Last updated:** [October 21, 2020, 12:18am UTC](https://discourse.slicer.org/t/how-to-get-the-boundaries-of-a-model/14173 "2020-10-21T00:18:59Z")

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Similar to “GetMesh().GetCenter()” to get the XYZ center coordinates of a model, how can I get the frontmost XYZ coordinate of the model? Thanks, JJ

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## [Interactions with the plane widget is problematic](https://discourse.slicer.org/t/interactions-with-the-plane-widget-is-problematic/14174)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [October 21, 2020, 12:05am UTC](https://discourse.slicer.org/t/interactions-with-the-plane-widget-is-problematic/14174 "2020-10-21T00:05:11Z")

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I filled a bug for Planes, in which trying to use interaction handles to drag the plane in a single axis causes a shift in its original position). For example, trying to drag the plane in direction of the yellow arrow w…

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## [Question about cervical spine tool](https://discourse.slicer.org/t/question-about-cervical-spine-tool/11264)

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**Author:** [@yf025](https://discourse.slicer.org/u/yf025)\
**Replies:** 3\
**Last updated:** [October 20, 2020, 7:33pm UTC](https://discourse.slicer.org/t/question-about-cervical-spine-tool/11264 "2020-10-20T19:33:44Z")

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I can not find any results（like segments or lables） after locating c1-7 and press run（it takes about several seconds），is there anyone who have experience in this tool，please tell me how to use this tool，thx！！ ps：I put t…

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## [SEEG extension/subdural EEG](https://discourse.slicer.org/t/seeg-extension-subdural-eeg/14166)

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**Author:** [@Gonzalo\_Rojas\_Costa](https://discourse.slicer.org/u/Gonzalo_Rojas_Costa)\
**Replies:** 0\
**Last updated:** [October 20, 2020, 6:58pm UTC](https://discourse.slicer.org/t/seeg-extension-subdural-eeg/14166 "2020-10-20T18:58:21Z")

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Hi: Which is the better SEEG extension and/or for subdural EEG ? SEEG Assistant? Sincerely, Gonzalo Rojas Costa

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## [Editing ROI through segment editor](https://discourse.slicer.org/t/editing-roi-through-segment-editor/11860)

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**Author:** [@RadioQuest](https://discourse.slicer.org/u/RadioQuest)\
**Replies:** 11\
**Last updated:** [October 20, 2020, 5:17pm UTC](https://discourse.slicer.org/t/editing-roi-through-segment-editor/11860 "2020-10-20T17:17:50Z")

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Hi… I am using 2D circles to draw an ROI of particular radius. However after registration , it appears to be at bit different position in the subsequent scan. Is it possible to move this ROI? I could not find the tools…

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## [Interpolation between slices not active when load image](https://discourse.slicer.org/t/interpolation-between-slices-not-active-when-load-image/14148)

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**Author:** [@rayan](https://discourse.slicer.org/u/rayan)\
**Replies:** 7\
**Last updated:** [October 20, 2020, 4:42pm UTC](https://discourse.slicer.org/t/interpolation-between-slices-not-active-when-load-image/14148 "2020-10-20T16:42:14Z")

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Operating system:Windows 10 Slicer version:4.1120200930 Expected behavior:In previous versions, when I load an image, it was automatically interpolating the slices i.e. “Interpolate” option in Volume module was checked…

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## [Slicer and video projector issue](https://discourse.slicer.org/t/slicer-and-video-projector-issue/13935)

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**Author:** [@PaoloZaffino](https://discourse.slicer.org/u/PaoloZaffino)\
**Replies:** 9\
**Last updated:** [October 20, 2020, 11:16am UTC](https://discourse.slicer.org/t/slicer-and-video-projector-issue/13935 "2020-10-20T11:16:23Z")

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Hi all, maybe it is not a proper “slicer related” question/issue, but maybe you can help me. I connected my laptop (arch Linux/gnome) to a video projector to show something in Slicer. In order to make the Slicer windo…

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## [Elastix registration incorporating contour information](https://discourse.slicer.org/t/elastix-registration-incorporating-contour-information/14154)

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**Author:** [@labixin](https://discourse.slicer.org/u/labixin)\
**Replies:** 0\
**Last updated:** [October 20, 2020, 8:20am UTC](https://discourse.slicer.org/t/elastix-registration-incorporating-contour-information/14154 "2020-10-20T08:20:40Z")

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Hi all, I want to incorporate contour information with intensity-based registration in Elastix (“MultiMetricMultiResolutionRegistration”). I have one corresponding segments (breast gland) both in pre-operative and post-…

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## [Problems with smoothing the vessel models](https://discourse.slicer.org/t/problems-with-smoothing-the-vessel-models/14125)

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**Author:** [@Andreas](https://discourse.slicer.org/u/Andreas)\
**Replies:** 1\
**Last updated:** [October 20, 2020, 3:52am UTC](https://discourse.slicer.org/t/problems-with-smoothing-the-vessel-models/14125 "2020-10-20T03:52:20Z")

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Hello everyone, I sometimes have vessel models that are very difficult to flatten (see pictures). Is there any way I can tweak the smoothing? There is another problem: When I have smoothed the vessel and then want …

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## [Draw tool stops working in segmentation editor](https://discourse.slicer.org/t/draw-tool-stops-working-in-segmentation-editor/14106)

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**Author:** [@Kamyar\_Zarkoub](https://discourse.slicer.org/u/Kamyar_Zarkoub)\
**Replies:** 9\
**Last updated:** [October 20, 2020, 2:16am UTC](https://discourse.slicer.org/t/draw-tool-stops-working-in-segmentation-editor/14106 "2020-10-20T02:16:24Z")

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Operating system:Mac When I’m trying to draw an aortic segment, the draw and paint tool are what I mainly use. But for some reason, along the way down the scans the draw tool stops working. I can draw the outline just f…

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