# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=224

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

**Page:** 225

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## [Why 3D Slicer 4.13 hasn't become stable version?](https://discourse.slicer.org/t/why-3d-slicer-4-13-hasnt-become-stable-version/23334)

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**Author:** [@Karthik](https://discourse.slicer.org/u/Karthik)\
**Replies:** 2\
**Last updated:** [May 10, 2022, 6:14am UTC](https://discourse.slicer.org/t/why-3d-slicer-4-13-hasnt-become-stable-version/23334 "2022-05-10T06:14:47Z")

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Recently, Slicer 5.1.0 is shown as preview release in https://download.slicer.org/ However, I expected that 3D Slicer 4.13 would now become the stable release replacing 4.11.20210226. When and what version is going to …

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## [In NRDD file format, CBCT scan of any skull](https://discourse.slicer.org/t/in-nrdd-file-format-cbct-scan-of-any-skull/23332)

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**Author:** [@Fatih\_Hamircu](https://discourse.slicer.org/u/Fatih_Hamircu)\
**Replies:** 4\
**Last updated:** [May 10, 2022, 4:46am UTC](https://discourse.slicer.org/t/in-nrdd-file-format-cbct-scan-of-any-skull/23332 "2022-05-10T04:46:54Z")

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I want a clean cbct scan of a skull to do segmentation on it and find out more about the 3dslicer (I am beginner). Where can I find it?

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## [Unable to export segment with ExportSegmentsClosedSurfaceRepresentationToFiles](https://discourse.slicer.org/t/unable-to-export-segment-with-exportsegmentsclosedsurfacerepresentationtofiles/23267)

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**Author:** [@Xabierenko](https://discourse.slicer.org/u/Xabierenko)\
**Replies:** 4\
**Last updated:** [May 10, 2022, 4:44am UTC](https://discourse.slicer.org/t/unable-to-export-segment-with-exportsegmentsclosedsurfacerepresentationtofiles/23267 "2022-05-10T04:44:10Z")

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Hi, I have been using the code snippet below to export large amounts of segmentations to .stl format. segmentation = slicer.util.loadSegmentation(seg) vol = slicer.util.loadVolume(mag) volumeNode = slicer.util.get…

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## [Problem exporting segmentation](https://discourse.slicer.org/t/problem-exporting-segmentation/23328)

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**Author:** [@Vickywaran\_Swann](https://discourse.slicer.org/u/Vickywaran_Swann)\
**Replies:** 1\
**Last updated:** [May 10, 2022, 4:37am UTC](https://discourse.slicer.org/t/problem-exporting-segmentation/23328 "2022-05-10T04:37:58Z")

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Problem report for Slicer 4.11.20210226 win-amd64: I am trying to export my segmentation file to a desired location. After clicking the export button under segmentation sections, the destination folder opens but the fil…

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## [Can 2D dicom images be histogram matched in 3D slicer?](https://discourse.slicer.org/t/can-2d-dicom-images-be-histogram-matched-in-3d-slicer/23333)

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**Author:** [@LIE\_CAI](https://discourse.slicer.org/u/LIE_CAI)\
**Replies:** 1\
**Last updated:** [May 10, 2022, 4:31am UTC](https://discourse.slicer.org/t/can-2d-dicom-images-be-histogram-matched-in-3d-slicer/23333 "2022-05-10T04:31:16Z")

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Hello, For example, when I use histogram matching method on 3D images, there are options to let me select the input, output and reference volumes: But when I open a single DICOM image, for example, an ultrasound ima…

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## [slicer.modules.DICOMWidget.browserWidget.dicomBrowser does not work in preview release](https://discourse.slicer.org/t/slicer-modules-dicomwidget-browserwidget-dicombrowser-does-not-work-in-preview-release/23354)

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**Author:** [@koeglfryderyk](https://discourse.slicer.org/u/koeglfryderyk)\
**Replies:** 1\
**Last updated:** [May 10, 2022, 4:17am UTC](https://discourse.slicer.org/t/slicer-modules-dicomwidget-browserwidget-dicombrowser-does-not-work-in-preview-release/23354 "2022-05-10T04:17:48Z")

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Slicer version 5.1.0, revision 30927, built 2022-05-09, MacOS I tried to follow an example for loading dicoms form the Script repository — 3D Slicer documentation, however slicer.modules.DICOMWidget.browserWidget.dicom…

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## [Active Learning in segment editor](https://discourse.slicer.org/t/active-learning-in-segment-editor/23350)

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**Author:** [@TaraGh](https://discourse.slicer.org/u/TaraGh)\
**Replies:** 1\
**Last updated:** [May 9, 2022, 8:30pm UTC](https://discourse.slicer.org/t/active-learning-in-segment-editor/23350 "2022-05-09T20:30:28Z")

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Hello, I have a question about the “segment editor”. I have a large dataset that I have to label and it is taking a lot of time to be done, so I am looking for something like an active learning concept in this tool or s…

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## [Model Scalar Display interpolation on RGB not Scalars](https://discourse.slicer.org/t/model-scalar-display-interpolation-on-rgb-not-scalars/23304)

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**Author:** [@wabwan25](https://discourse.slicer.org/u/wabwan25)\
**Replies:** 2\
**Last updated:** [May 9, 2022, 4:53pm UTC](https://discourse.slicer.org/t/model-scalar-display-interpolation-on-rgb-not-scalars/23304 "2022-05-09T16:53:43Z")

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I am not sure my observation is correct, but i get an issue on model scalar display in the transition area. As below image show, the color within triangle seems from interpolation of vertex RGB colors. What I expect is …

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## [VMTK centreline and metrics](https://discourse.slicer.org/t/vmtk-centreline-and-metrics/12203)

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**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 12\
**Last updated:** [May 9, 2022, 1:52pm UTC](https://discourse.slicer.org/t/vmtk-centreline-and-metrics/12203 "2022-05-09T13:52:41Z")

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This is a feature request concerning VMTK centerline and its metrics. GLOBAL METRICS The below image shows a sigle centerline of a pathological artery. It is not clear where is located the measured radius. I wish t…

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## [Full slicer cache leads to performance problems with MONAILabel](https://discourse.slicer.org/t/full-slicer-cache-leads-to-performance-problems-with-monailabel/23305)

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**Author:** [@jlvahldiek](https://discourse.slicer.org/u/jlvahldiek)\
**Replies:** 5\
**Last updated:** [May 9, 2022, 1:14pm UTC](https://discourse.slicer.org/t/full-slicer-cache-leads-to-performance-problems-with-monailabel/23305 "2022-05-09T13:14:00Z")

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We use 3D slicer with MONAILabel to create large data sets. After a certain time the slicer cache fills up. When the upper limit of the cache is reached, loading images via MONAILabel’s ‘Next Sample’ takes a very long ti…

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## [Inconsistency between 3D slicer DICOM images and images plotted on Python](https://discourse.slicer.org/t/inconsistency-between-3d-slicer-dicom-images-and-images-plotted-on-python/23347)

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**Author:** [@Chiard](https://discourse.slicer.org/u/Chiard)\
**Replies:** 1\
**Last updated:** [May 9, 2022, 1:05pm UTC](https://discourse.slicer.org/t/inconsistency-between-3d-slicer-dicom-images-and-images-plotted-on-python/23347 "2022-05-09T13:05:44Z")

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Slicer version: 4.13.0 I’m performing semantic segmentation of Left Ventricle through 3D slicer and Google Colab. I want to create my dataset of images and masks. In order to create my images dataset I loaded the .dcm …

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## [3D model annotation at original resolution](https://discourse.slicer.org/t/3d-model-annotation-at-original-resolution/23264)

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**Author:** [@NicolasRannou](https://discourse.slicer.org/u/NicolasRannou)\
**Replies:** 2\
**Last updated:** [May 9, 2022, 7:03am UTC](https://discourse.slicer.org/t/3d-model-annotation-at-original-resolution/23264 "2022-05-09T07:03:45Z")

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Hi, is it possible to annotate the vertices of a 3D model and keep the original vertex information? I have a big 3d file (STL) of the mouth. I must classify each vertex of the model as Tooth, Jaw, or Preparation. Is the…

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## [About segmentation and three-dimensional reconstruction for CT](https://discourse.slicer.org/t/about-segmentation-and-three-dimensional-reconstruction-for-ct/23322)

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**Author:** [@zhiyuan](https://discourse.slicer.org/u/zhiyuan)\
**Replies:** 1\
**Last updated:** [May 9, 2022, 4:42am UTC](https://discourse.slicer.org/t/about-segmentation-and-three-dimensional-reconstruction-for-ct/23322 "2022-05-09T04:42:58Z")

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I have a question. CT images are scanned and photographed at a certain interval. For example, it is a plane scan at an interval of 1mm. When we segment, we can only segment the target area of the scanning surface. For th…

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## [Error to visualize polydata in slicer 4.10.2](https://discourse.slicer.org/t/error-to-visualize-polydata-in-slicer-4-10-2/23327)

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**Author:** [@hehongwei120](https://discourse.slicer.org/u/hehongwei120)\
**Replies:** 1\
**Last updated:** [May 8, 2022, 4:30am UTC](https://discourse.slicer.org/t/error-to-visualize-polydata-in-slicer-4-10-2/23327 "2022-05-08T04:30:04Z")

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Operating system: ubuntu 18.04 Slicer version: 4.10.2 Expected behavior: the same as slicer 4.13.0 or paraview Actual behavior: error visualize I use the same polydata.stl,but different visualize in slicer 4.10.…

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## [Model LineWidth](https://discourse.slicer.org/t/model-linewidth/23330)

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**Author:** [@Adam\_Kalina](https://discourse.slicer.org/u/Adam_Kalina)\
**Replies:** 1\
**Last updated:** [May 8, 2022, 4:19am UTC](https://discourse.slicer.org/t/model-linewidth/23330 "2022-05-08T04:19:48Z")

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Operating system: Win 10 Slicer version: 4.10,4.11, 4.13 Expected behavior: Models → Display → Slice display → Line Width should change size of line intersection with slice Actual behavior: works in 3D, in slice it st…

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## [Unexpected voxel values at boundary when using CPR (curved planer reformat) to straighten label volume](https://discourse.slicer.org/t/unexpected-voxel-values-at-boundary-when-using-cpr-curved-planer-reformat-to-straighten-label-volume/21174)

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**Author:** [@Kane\_Daizah](https://discourse.slicer.org/u/Kane_Daizah)\
**Replies:** 5\
**Last updated:** [May 8, 2022, 3:30am UTC](https://discourse.slicer.org/t/unexpected-voxel-values-at-boundary-when-using-cpr-curved-planer-reformat-to-straighten-label-volume/21174 "2022-05-08T03:30:56Z")

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Hi, when I used the centerline extraction and CPR to straighten the true and false lumen labels of the aorta, I found that some of the true lumen labels of the aorta will be mixed with the false lumen labels after straig…

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## [Workflow to compare two models based on their respective associated scalars](https://discourse.slicer.org/t/workflow-to-compare-two-models-based-on-their-respective-associated-scalars/23204)

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**Author:** [@tristan421](https://discourse.slicer.org/u/tristan421)\
**Replies:** 2\
**Last updated:** [May 7, 2022, 10:24pm UTC](https://discourse.slicer.org/t/workflow-to-compare-two-models-based-on-their-respective-associated-scalars/23204 "2022-05-07T22:24:25Z")

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Hi, fantastic work here. Slicer is great. I have advanced on my own but could do with a kind and helping hand for the last step. Very quickly : I have two models. The fist one has been created from a segmented volume …

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## [Error reporting in LungCT segmenter module](https://discourse.slicer.org/t/error-reporting-in-lungct-segmenter-module/23294)

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**Author:** [@zhongheng](https://discourse.slicer.org/u/zhongheng)\
**Replies:** 3\
**Last updated:** [May 6, 2022, 11:01pm UTC](https://discourse.slicer.org/t/error-reporting-in-lungct-segmenter-module/23294 "2022-05-06T23:01:37Z")

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Hi, I have the below error when creating segmentation for lung CT; How can i solve this? Fail to compute results (‘right lung’, labelmapSegmentStatisticsPlugin.centroid\_ras)

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## [Loading terminology file when editing a segmentation](https://discourse.slicer.org/t/loading-terminology-file-when-editing-a-segmentation/23061)

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**Author:** [@DeepaKrishnaswamy](https://discourse.slicer.org/u/DeepaKrishnaswamy)\
**Replies:** 2\
**Last updated:** [May 6, 2022, 8:31pm UTC](https://discourse.slicer.org/t/loading-terminology-file-when-editing-a-segmentation/23061 "2022-05-06T20:31:27Z")

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Hi, I am working on a module that uses a terminology file to define regions/colors. When I first add a segment to a node, the terminology file I’ve specified is automatically chosen. I then draw a segment and save th…

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## [Arduino PedalBoard](https://discourse.slicer.org/t/arduino-pedalboard/22909)

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**Author:** [@PaoloZaffino](https://discourse.slicer.org/u/PaoloZaffino)\
**Replies:** 9\
**Last updated:** [May 6, 2022, 2:57pm UTC](https://discourse.slicer.org/t/arduino-pedalboard/22909 "2022-05-06T14:57:27Z")

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Hi all, we are glad to announce that the SlicerArduinoController extension now has a new module for controlling Slicer view via a dedicated pedalboard connected to Arduino. For the moment, just a basic set of instructi…

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## [Use of python interactor and already built-in functions for workflow efficiency](https://discourse.slicer.org/t/use-of-python-interactor-and-already-built-in-functions-for-workflow-efficiency/23279)

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**Author:** [@Jacktat](https://discourse.slicer.org/u/Jacktat)\
**Replies:** 1\
**Last updated:** [May 6, 2022, 2:08pm UTC](https://discourse.slicer.org/t/use-of-python-interactor-and-already-built-in-functions-for-workflow-efficiency/23279 "2022-05-06T14:08:33Z")

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Hi everyone, I have achieved what I want to do with slicer, which was segment a vessel, compute centerline, extract CE diameter, and compute the maximum Feret diameter of that cross-section (I want to do this for the wh…

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## [Export surface textures of ROI as images](https://discourse.slicer.org/t/export-surface-textures-of-roi-as-images/23289)

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**Author:** [@Atomsk](https://discourse.slicer.org/u/Atomsk)\
**Replies:** 2\
**Last updated:** [May 6, 2022, 1:26pm UTC](https://discourse.slicer.org/t/export-surface-textures-of-roi-as-images/23289 "2022-05-06T13:26:20Z")

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Hello, my dataset is a stack of TIFF images which I imported into 3D slicer. I then enabled Volume Rendering of this dataset and toggled “Shade” off because I just want to browse through the dataset in the 3D viewport; …

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## [Recorded sequence volume reconstruction for 3D ultrasound](https://discourse.slicer.org/t/recorded-sequence-volume-reconstruction-for-3d-ultrasound/22910)

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**Author:** [@Karl-Philippe](https://discourse.slicer.org/u/Karl-Philippe)\
**Replies:** 5\
**Last updated:** [May 6, 2022, 1:00pm UTC](https://discourse.slicer.org/t/recorded-sequence-volume-reconstruction-for-3d-ultrasound/22910 "2022-05-06T13:00:43Z")

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Hi, I work with tracked ultrasound and I am using the SlicerIGSIO Volume Reconstruction module to reconstruct a volume and then segment the liver using slicer. I was able to correctly reconstruct a volume using the …

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## [saved VOI not allowing new segmentations](https://discourse.slicer.org/t/saved-voi-not-allowing-new-segmentations/23306)

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**Author:** [@artycho](https://discourse.slicer.org/u/artycho)\
**Replies:** 0\
**Last updated:** [May 6, 2022, 12:50pm UTC](https://discourse.slicer.org/t/saved-voi-not-allowing-new-segmentations/23306 "2022-05-06T12:50:05Z")

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Operating system: windwos Slicer version: 4.11 Expected behavior: saved ROI should allow new segmentations Actual behavior: saved ROI only allows new segmentations within the area within the saved ROI. I have drawn a…

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## [Multiple overlapping centerlines created by vmtkcenterlinesnetwork](https://discourse.slicer.org/t/multiple-overlapping-centerlines-created-by-vmtkcenterlinesnetwork/23180)

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**Author:** [@Doodads](https://discourse.slicer.org/u/Doodads)\
**Replies:** 2\
**Last updated:** [May 6, 2022, 3:35am UTC](https://discourse.slicer.org/t/multiple-overlapping-centerlines-created-by-vmtkcenterlinesnetwork/23180 "2022-05-06T03:35:49Z")

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Operating system: Ubuntu 20.04.2 LTS Slicer version: N.A. (using vmtk development version) Expected behavior: Centerlines split into two at each bifurcation. A single centerline running through each branch. Actual beh…

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## [extremities of a long volume vanishing when rotating](https://discourse.slicer.org/t/extremities-of-a-long-volume-vanishing-when-rotating/23234)

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**Author:** [@Jean](https://discourse.slicer.org/u/Jean)\
**Replies:** 11\
**Last updated:** [May 6, 2022, 12:39am UTC](https://discourse.slicer.org/t/extremities-of-a-long-volume-vanishing-when-rotating/23234 "2022-05-06T00:39:21Z")

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Operating system: Windows 10 Slicer version: 4.10.1 r27931 Expected behavior: starting with images that are stacks of binary images,with model maker I generate a 3D view, In the rotation of the 3D views I expect to see…

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## [Compute volume in image](https://discourse.slicer.org/t/compute-volume-in-image/23288)

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**Author:** [@Qazi](https://discourse.slicer.org/u/Qazi)\
**Replies:** 3\
**Last updated:** [May 5, 2022, 5:18pm UTC](https://discourse.slicer.org/t/compute-volume-in-image/23288 "2022-05-05T17:18:38Z")

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Hi @lassoan I have converted my dataset from 16bit to 8 bit and then used the data to calculate volume but the values (for volume) I get are quite unrealistic rather very far from being realistic. Like I expect values o…

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## [Image quantization techniques?](https://discourse.slicer.org/t/image-quantization-techniques/13420)

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**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 7\
**Last updated:** [September 13, 2020, 1:29pm UTC](https://discourse.slicer.org/t/image-quantization-techniques/13420 "2020-09-13T13:29:28Z")

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We recently had a new detector installed in our micro-CT machine that has resulted in significantly higher dataset sizes (from 0.5-1.0GB to 10GB). While this is really nice from a resolution and dynamic range point of vi…

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## [Artery-tumor intersection points](https://discourse.slicer.org/t/artery-tumor-intersection-points/23070)

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**Author:** [@gfurnari](https://discourse.slicer.org/u/gfurnari)\
**Replies:** 16\
**Last updated:** [May 5, 2022, 2:24pm UTC](https://discourse.slicer.org/t/artery-tumor-intersection-points/23070 "2022-05-05T14:24:22Z")

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Hi everyone, i’m working on segmentation of kidney tumor and artery that feeds the tumor. I used logical operator intersect to get the parts where artery and tumor touch each other. I’d like to know if it’s possible to …

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## [Transformation output files](https://discourse.slicer.org/t/transformation-output-files/23250)

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**Author:** [@Vinny](https://discourse.slicer.org/u/Vinny)\
**Replies:** 5\
**Last updated:** [May 5, 2022, 1:58pm UTC](https://discourse.slicer.org/t/transformation-output-files/23250 "2022-05-05T13:58:31Z")

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Hi, Slicer-4.13.0-2021-10-10-linux-amd64 I have a question regarding the format and content of the transformation matrix files outputted from the Slicer GUI versus the command-line. When manually performing a rigid re…

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