# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=158

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

**Page:** 159

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## [Possible Memory Leak - Segmentation Editor and Show in 3D](https://discourse.slicer.org/t/possible-memory-leak-segmentation-editor-and-show-in-3d/29917)

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**Author:** [@BobAho](https://discourse.slicer.org/u/BobAho)\
**Replies:** 3\
**Last updated:** [June 8, 2023, 5:09pm UTC](https://discourse.slicer.org/t/possible-memory-leak-segmentation-editor-and-show-in-3d/29917 "2023-06-08T17:09:55Z")

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Working on CT microscan volumes segmenting the specimen from the noise. Start Slicer, it occupies about 500 MB memory. Load volume and it’s about 2.2GB. So far so good. Render the volume and Slicer jumps to 4.4 GB, st…

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## [T1 Mapping using DFA](https://discourse.slicer.org/t/t1-mapping-using-dfa/7150)

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**Author:** [@madeline](https://discourse.slicer.org/u/madeline)\
**Replies:** 2\
**Last updated:** [June 8, 2023, 4:23pm UTC](https://discourse.slicer.org/t/t1-mapping-using-dfa/7150 "2023-06-08T16:23:09Z")

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Hi, Just wondering if anyone can tell me if there is a way to use the T1 Mapping module using two separate data sets for each of the flip angles utilized (2,15 degrees). From the Documentation, the input image requires…

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## [SlicerVMTK Extract Centerlines Not Creating a Model](https://discourse.slicer.org/t/slicervmtk-extract-centerlines-not-creating-a-model/29906)

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**Author:** [@darsh](https://discourse.slicer.org/u/darsh)\
**Replies:** 3\
**Last updated:** [June 8, 2023, 12:44pm UTC](https://discourse.slicer.org/t/slicervmtk-extract-centerlines-not-creating-a-model/29906 "2023-06-08T12:44:31Z")

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Hi, I started using Slicer recently to create a model of pulmonary arteries and arterioles. After creating my segmentation and cleaning it up, I’m trying to use the SlicerVMTK extension to find centerlines for each vesse…

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## [Segment Editor smoothing](https://discourse.slicer.org/t/segment-editor-smoothing/29893)

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**Author:** [@tsehrhardt](https://discourse.slicer.org/u/tsehrhardt)\
**Replies:** 2\
**Last updated:** [June 8, 2023, 11:49am UTC](https://discourse.slicer.org/t/segment-editor-smoothing/29893 "2023-06-08T11:49:28Z")

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Is the smoothing algorithm in the “Show 3D” button of the Segment Editor using Taubin smoothing? I have seen recommendations to turn off smoothing and export the model to apply Taubin smoothing in external software like …

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## [Apply a nonlinear transform to model using Python code](https://discourse.slicer.org/t/apply-a-nonlinear-transform-to-model-using-python-code/29896)

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**Author:** [@SANTIAGO\_PENDON\_MING](https://discourse.slicer.org/u/SANTIAGO_PENDON_MING)\
**Replies:** 2\
**Last updated:** [June 8, 2023, 6:51am UTC](https://discourse.slicer.org/t/apply-a-nonlinear-transform-to-model-using-python-code/29896 "2023-06-08T06:51:11Z")

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Hi to everyone, on this occasion we are trying to automate a specific transform process. Our goal is to apply a transform we made before in a slicer 3D model. The workflow is the next one: • We use the module Curved Pla…

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## [Converting view coordinates to image coordinates](https://discourse.slicer.org/t/converting-view-coordinates-to-image-coordinates/29865)

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**Author:** [@asyeda](https://discourse.slicer.org/u/asyeda)\
**Replies:** 2\
**Last updated:** [June 8, 2023, 1:26am UTC](https://discourse.slicer.org/t/converting-view-coordinates-to-image-coordinates/29865 "2023-06-08T01:26:50Z")

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I am writing a custom scripted loadable module where one of the features lets the user click on a button, then click & drag to select a region of interest for further analysis. I have written MouseEvents like so: class …

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## [Importing DWI file ](https://discourse.slicer.org/t/importing-dwi-file/6576)

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**Author:** [@amymanson](https://discourse.slicer.org/u/amymanson)\
**Replies:** 18\
**Last updated:** [June 8, 2023, 1:03am UTC](https://discourse.slicer.org/t/importing-dwi-file/6576 "2023-06-08T01:03:11Z")

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Hi, I am trying to import some DWI data into Slicer. I have successfully done this in the past using .nrrd files. This new data is .nii and seems to load fine but in the Diffusion Brain Masking module it is not found as…

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## [Are there any examples of integrating conan into 3d slicer extension?](https://discourse.slicer.org/t/are-there-any-examples-of-integrating-conan-into-3d-slicer-extension/29895)

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**Author:** [@james94g](https://discourse.slicer.org/u/james94g)\
**Replies:** 4\
**Last updated:** [June 7, 2023, 10:27pm UTC](https://discourse.slicer.org/t/are-there-any-examples-of-integrating-conan-into-3d-slicer-extension/29895 "2023-06-07T22:27:50Z")

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Operating system: Ubuntu 22.04 Slicer version: 5.3.0 Expected behavior: After successfully building custom extension with conan cmake, I expect my modified OpenIGTLinkIF module to show up in modules. Actual behavior: …

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## [Segmentation tool](https://discourse.slicer.org/t/segmentation-tool/29905)

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**Author:** [@Maurice\_Tang](https://discourse.slicer.org/u/Maurice_Tang)\
**Replies:** 1\
**Last updated:** [June 7, 2023, 10:15pm UTC](https://discourse.slicer.org/t/segmentation-tool/29905 "2023-06-07T22:15:21Z")

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Hello, When I set the thresholding upper and lower limits, there are highlights in the views. However, after I applied, nothing shows up and “show 3D” also didn’t work. Is there something wrong with the way I operate?

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## [Export segmentation as DICOM in latest stable slicer](https://discourse.slicer.org/t/export-segmentation-as-dicom-in-latest-stable-slicer/28924)

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**Author:** [@Raj\_Kumar\_Ranabhat](https://discourse.slicer.org/u/Raj_Kumar_Ranabhat)\
**Replies:** 11\
**Last updated:** [June 7, 2023, 8:08pm UTC](https://discourse.slicer.org/t/export-segmentation-as-dicom-in-latest-stable-slicer/28924 "2023-06-07T20:08:31Z")

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Hi Channel, I am trying to export segmentation as a DICOM in latest stable version of 3D slicer . And it seems Quantitate reporting doesn’t work in stable version. Could you please advice ?

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## [DICOM database initialization](https://discourse.slicer.org/t/dicom-database-initialization/29897)

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**Author:** [@Nadya\_Shusharina](https://discourse.slicer.org/u/Nadya_Shusharina)\
**Replies:** 8\
**Last updated:** [June 7, 2023, 7:36pm UTC](https://discourse.slicer.org/t/dicom-database-initialization/29897 "2023-06-07T19:36:40Z")

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Hi! I am starting Slicer in a Docker container. I need to initialize Slicer DICOM database prior to executing the module I am working on. How to initialize the db in a script rather than manually clicking “Create new da…

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## [Surface toolbox - Extract largest component](https://discourse.slicer.org/t/surface-toolbox-extract-largest-component/29804)

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**Author:** [@S\_Motch\_Perrine](https://discourse.slicer.org/u/S_Motch_Perrine)\
**Replies:** 6\
**Last updated:** [June 7, 2023, 4:09pm UTC](https://discourse.slicer.org/t/surface-toolbox-extract-largest-component/29804 "2023-06-07T16:09:12Z")

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Operating system: Windows 11 Slicer version: 5.2.1 r31317 Expected behavior: Extract largest component of skull Actual behavior: The model is performing as expected but I would actually like to extract the SECOND and …

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## [Disable tristate checkboxes in ctkCheckableComboBox](https://discourse.slicer.org/t/disable-tristate-checkboxes-in-ctkcheckablecombobox/29898)

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**Author:** [@abertelsen](https://discourse.slicer.org/u/abertelsen)\
**Replies:** 1\
**Last updated:** [June 7, 2023, 2:19pm UTC](https://discourse.slicer.org/t/disable-tristate-checkboxes-in-ctkcheckablecombobox/29898 "2023-06-07T14:19:14Z")

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Hello everybody! A quick question: is there a way to disable the tristate behaviour in ctkCheckableComboBox? For my application, the usual checked or unchecked states are more appropriate. I forgot to mention that I …

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## [converting model to binary label map creates artifacts ](https://discourse.slicer.org/t/converting-model-to-binary-label-map-creates-artifacts/29879)

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**Author:** [@NahomKidane](https://discourse.slicer.org/u/NahomKidane)\
**Replies:** 3\
**Last updated:** [June 7, 2023, 1:03pm UTC](https://discourse.slicer.org/t/converting-model-to-binary-label-map-creates-artifacts/29879 "2023-06-07T13:03:41Z")

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Hello, I am trying to use the convert model to segmentation node but I get artifacts. Any idea on how to correct this issue? Thank you!

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## [Fast segmentation of roots.](https://discourse.slicer.org/t/fast-segmentation-of-roots/28330)

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**Author:** [@Dr\_M](https://discourse.slicer.org/u/Dr_M)\
**Replies:** 3\
**Last updated:** [June 7, 2023, 11:56am UTC](https://discourse.slicer.org/t/fast-segmentation-of-roots/28330 "2023-06-07T11:56:40Z")

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Can you efficiently and effectively segment dental roots? From a single arch from cbct to stl? In the range of 20 micron to 100 micron level of exactitude? Thanks to those who have already posted about this subject. Th…

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## [Can I still get the 3D Slicer version 2 software for Window's Machine?](https://discourse.slicer.org/t/can-i-still-get-the-3d-slicer-version-2-software-for-windows-machine/29878)

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**Author:** [@Solayman](https://discourse.slicer.org/u/Solayman)\
**Replies:** 2\
**Last updated:** [June 7, 2023, 12:04am UTC](https://discourse.slicer.org/t/can-i-still-get-the-3d-slicer-version-2-software-for-windows-machine/29878 "2023-06-07T00:04:32Z")

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I need 3D Slicer version 2 for one of my research experiments. Can I still download that specific version on my window computer? Thanks.

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## [Erasing Segments for 3D View](https://discourse.slicer.org/t/erasing-segments-for-3d-view/29866)

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**Author:** [@cy787](https://discourse.slicer.org/u/cy787)\
**Replies:** 3\
**Last updated:** [June 6, 2023, 11:21pm UTC](https://discourse.slicer.org/t/erasing-segments-for-3d-view/29866 "2023-06-06T23:21:05Z")

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Hi all! I’m new to 3D Slicer and am trying to create a 3D rendering of a set of lungs and the airways. I tried to use the Fill Between Slices feature from the Segment Editor, but it created this: Is there any way to …

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## [Difficulty exporting .obj files](https://discourse.slicer.org/t/difficulty-exporting-obj-files/29880)

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**Author:** [@Michael\_Page](https://discourse.slicer.org/u/Michael_Page)\
**Replies:** 1\
**Last updated:** [June 6, 2023, 11:06pm UTC](https://discourse.slicer.org/t/difficulty-exporting-obj-files/29880 "2023-06-06T23:06:37Z")

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Operating system:win 10 Slicer version:5.2.2 Expected behavior:Export .OBJ Actual behavior:Creates empty 1kb files.

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## [Calculate the sum of 2 RT Dose](https://discourse.slicer.org/t/calculate-the-sum-of-2-rt-dose/29848)

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**Author:** [@azam](https://discourse.slicer.org/u/azam)\
**Replies:** 1\
**Last updated:** [June 6, 2023, 11:47am UTC](https://discourse.slicer.org/t/calculate-the-sum-of-2-rt-dose/29848 "2023-06-06T11:47:07Z")

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Operating system: windows Slicer version: 4.13 Hi everyone I have two brachytherapy RT doses from the same anatomical region and I want to add them together to calculate the total dose in tumor and normal organs using…

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## [Wrong value displayed in deformation vector field](https://discourse.slicer.org/t/wrong-value-displayed-in-deformation-vector-field/29792)

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**Author:** [@bqi](https://discourse.slicer.org/u/bqi)\
**Replies:** 12\
**Last updated:** [June 6, 2023, 7:10am UTC](https://discourse.slicer.org/t/wrong-value-displayed-in-deformation-vector-field/29792 "2023-06-06T07:10:27Z")

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Hi, I am coding to extract the deformation vector field stored in a DICOM REG file. This file is generated and exported from ImSim QA. The size of the grid is 512512141. The DVF value is basically (0,0,9) on each point…

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## [Strange conversion between planer contours to binary labelmap](https://discourse.slicer.org/t/strange-conversion-between-planer-contours-to-binary-labelmap/29718)

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**Author:** [@sotarad](https://discourse.slicer.org/u/sotarad)\
**Replies:** 9\
**Last updated:** [June 6, 2023, 6:34am UTC](https://discourse.slicer.org/t/strange-conversion-between-planer-contours-to-binary-labelmap/29718 "2023-06-06T06:34:21Z")

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Hi,all. I’m troubled with converting planer contour (master) into binary lebelmap. Finally, I want to do segment registration that reflected patient’s body shrink. So, I make new segmentation that reproduced body shri…

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## [Conversion of planar contours to closed surfaces of RT Structs is corrupted](https://discourse.slicer.org/t/conversion-of-planar-contours-to-closed-surfaces-of-rt-structs-is-corrupted/29830)

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**Author:** [@nathanbmnt](https://discourse.slicer.org/u/nathanbmnt)\
**Replies:** 7\
**Last updated:** [June 5, 2023, 11:05pm UTC](https://discourse.slicer.org/t/conversion-of-planar-contours-to-closed-surfaces-of-rt-structs-is-corrupted/29830 "2023-06-05T23:05:23Z")

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Hello, I have brain RT structs exported from the software “MIM” which when I import into Slicer via SlicerRT have corrupted closed surfaces. As you can see the slice fill has patches missing and points are connected…

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## [Stl model doesn't show in slice view](https://discourse.slicer.org/t/stl-model-doesnt-show-in-slice-view/29835)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 1\
**Last updated:** [June 5, 2023, 4:07pm UTC](https://discourse.slicer.org/t/stl-model-doesnt-show-in-slice-view/29835 "2023-06-05T16:07:47Z")

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i imported this stl file for a dental implant to visualize positioning . however object is only shown in the 3d rendering view . and it doesn’t show in the slice itself . is there a way to make it visible in slice view …

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## [Visualize a Simples Rock Segmentation](https://discourse.slicer.org/t/visualize-a-simples-rock-segmentation/29844)

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**Author:** [@edwin](https://discourse.slicer.org/u/edwin)\
**Replies:** 4\
**Last updated:** [June 5, 2023, 3:33pm UTC](https://discourse.slicer.org/t/visualize-a-simples-rock-segmentation/29844 "2023-06-05T15:33:03Z")

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I work with CT images from rocks. I perform a segmentation in a CT volume then I have a 3d Numpy array with 3 labels (1,2,3) this numpy array is np.unit8. Then I transform this numpy array to ndrr format with this code?: …

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## [Total Segmenter cannot detect my GPU (1080ti x 2)](https://discourse.slicer.org/t/total-segmenter-cannot-detect-my-gpu-1080ti-x-2/26728)

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**Author:** [@scottcollins3d](https://discourse.slicer.org/u/scottcollins3d)\
**Replies:** 4\
**Last updated:** [June 5, 2023, 3:26pm UTC](https://discourse.slicer.org/t/total-segmenter-cannot-detect-my-gpu-1080ti-x-2/26728 "2023-06-05T15:26:11Z")

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On my setup, the Total Segmenter extension is telling me that it cannot detect my GPU (1080ti x 2). Can you point me to where there may be settings to detect my graphics card? Operating system: Windows 10 Slicer versio…

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## [Python Errors on startup of Slicer 3D](https://discourse.slicer.org/t/python-errors-on-startup-of-slicer-3d/29846)

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**Author:** [@prathamtikki](https://discourse.slicer.org/u/prathamtikki)\
**Replies:** 1\
**Last updated:** [June 5, 2023, 1:32pm UTC](https://discourse.slicer.org/t/python-errors-on-startup-of-slicer-3d/29846 "2023-06-05T13:32:27Z")

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Operating system: MacOS 13.2.1 Slicer version: 5.2.2 On startup of a freshly downloaded stable release of Slicer 5.2.2, I face all these python errors. I do not know where the problem is and how to over come. Could som…

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## [Convert from cartesian to polar coordinates using ExtractCenterline](https://discourse.slicer.org/t/convert-from-cartesian-to-polar-coordinates-using-extractcenterline/29831)

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**Author:** [@Gening\_Dong](https://discourse.slicer.org/u/Gening_Dong)\
**Replies:** 1\
**Last updated:** [June 5, 2023, 4:14am UTC](https://discourse.slicer.org/t/convert-from-cartesian-to-polar-coordinates-using-extractcenterline/29831 "2023-06-05T04:14:32Z")

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Hi all, I’m trying to convert from Cartesian coordinates to polar coordinates for a heart lumen surface model. I used the module Extract Centerline to generate a centerline and Cross-section analysis to get some diamete…

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## [Curiosity about Professional Usage of Slicer](https://discourse.slicer.org/t/curiosity-about-professional-usage-of-slicer/29829)

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**Author:** [@Kurtholus](https://discourse.slicer.org/u/Kurtholus)\
**Replies:** 3\
**Last updated:** [June 5, 2023, 3:32am UTC](https://discourse.slicer.org/t/curiosity-about-professional-usage-of-slicer/29829 "2023-06-05T03:32:22Z")

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Hey all! I’ve been working with Slicer for the last year on a project where we use the software to create and clean up models generated from laser scans of deep sea creatures. The job will likely last until the end of t…

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## [Can you turn a video into a 3d model](https://discourse.slicer.org/t/can-you-turn-a-video-into-a-3d-model/29677)

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**Author:** [@studyskin](https://discourse.slicer.org/u/studyskin)\
**Replies:** 8\
**Last updated:** [June 4, 2023, 3:52pm UTC](https://discourse.slicer.org/t/can-you-turn-a-video-into-a-3d-model/29677 "2023-06-04T15:52:59Z")

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hello, im wondering if there is a way to turn pictures from a ct scan video into a 3d model in slicer. digimorph has a scan of an african wildcat but does not have the ct scan but they do have a video of each slice (Digi…

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## [Export STL 3D Model with different densities according to the HU of DICOM](https://discourse.slicer.org/t/export-stl-3d-model-with-different-densities-according-to-the-hu-of-dicom/29815)

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**Author:** [@gonzalozar](https://discourse.slicer.org/u/gonzalozar)\
**Replies:** 3\
**Last updated:** [June 4, 2023, 3:35pm UTC](https://discourse.slicer.org/t/export-stl-3d-model-with-different-densities-according-to-the-hu-of-dicom/29815 "2023-06-04T15:35:41Z")

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Does the exported STL output file (when segmenting) also considers the densities of the DICOM image (more or less HU units)? If not, is there any way to obtain a exported STL that also considers the densities? Please if…

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