# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=205

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

**Page:** 206

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## [How to get Leap motion data by using the puls app](https://discourse.slicer.org/t/how-to-get-leap-motion-data-by-using-the-puls-app/24992)

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**Author:** [@xiaosnowqiang](https://discourse.slicer.org/u/xiaosnowqiang)\
**Replies:** 1\
**Last updated:** [September 14, 2022, 1:48am UTC](https://discourse.slicer.org/t/how-to-get-leap-motion-data-by-using-the-puls-app/24992 "2022-09-14T01:48:36Z")

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Hello experts,I want to use the leap motion data to control the slicer.I have got the connect between plus and 3d slicer with plusserver MMF,but there’s no data available in slicer,and I also try to use the plus server:l…

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## [How to invoke Sandbox/Lights extension module?](https://discourse.slicer.org/t/how-to-invoke-sandbox-lights-extension-module/25232)

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**Author:** [@mdear](https://discourse.slicer.org/u/mdear)\
**Replies:** 2\
**Last updated:** [September 13, 2022, 10:49pm UTC](https://discourse.slicer.org/t/how-to-invoke-sandbox-lights-extension-module/25232 "2022-09-13T22:49:44Z")

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Hello, I am running 5.0.3 r30893 / 7ea0f43 and I want the Lights module that comes with the Sandbox extension. I have installed the Sandbox extension. How can I invoke the lights module? It doesn’t appear in my Modul…

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## [Use Gaussian Blur Image Filter on Jupyter notebook](https://discourse.slicer.org/t/use-gaussian-blur-image-filter-on-jupyter-notebook/25244)

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**Author:** [@Kien\_Phung\_Van](https://discourse.slicer.org/u/Kien_Phung_Van)\
**Replies:** 0\
**Last updated:** [September 13, 2022, 9:48pm UTC](https://discourse.slicer.org/t/use-gaussian-blur-image-filter-on-jupyter-notebook/25244 "2022-09-13T21:48:24Z")

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Hello! I want to write code on Jupyter using a Gaussian filter. After selecting that module, I want to choose sigma = 1 like this and how to write code on Jupyter? Thanks in advance !!!

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## [Watershed and grow from seeds](https://discourse.slicer.org/t/watershed-and-grow-from-seeds/25240)

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**Author:** [@MPhilip](https://discourse.slicer.org/u/MPhilip)\
**Replies:** 0\
**Last updated:** [September 13, 2022, 3:44pm UTC](https://discourse.slicer.org/t/watershed-and-grow-from-seeds/25240 "2022-09-13T15:44:54Z")

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Hi, I was trying to use watershed and grow from seeds segmentation methods on PET images. But the process of implementing the semi-automatic methods in a 3D slicer seems identical- i.e. labelling(seeds) the tumour and t…

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## [Erase using a segment as only editable area](https://discourse.slicer.org/t/erase-using-a-segment-as-only-editable-area/20519)

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**Author:** [@Michele\_Bailo](https://discourse.slicer.org/u/Michele_Bailo)\
**Replies:** 16\
**Last updated:** [September 13, 2022, 2:15pm UTC](https://discourse.slicer.org/t/erase-using-a-segment-as-only-editable-area/20519 "2022-09-13T14:15:02Z")

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Hi everyone, I’m using a Slicer version 4.13.0-2021-06-03 for Windows. I noticed that the function “Masking - Editable area - Inside segment XXX” doesn’t seem to apply to the “Erase” function of the “Segment Editor” (i…

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## [Lung CT Segmenter supports TotalSegmentator nnU-Net deep learning](https://discourse.slicer.org/t/lung-ct-segmenter-supports-totalsegmentator-nnu-net-deep-learning/25226)

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**Author:** [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Replies:** 3\
**Last updated:** [September 13, 2022, 1:53pm UTC](https://discourse.slicer.org/t/lung-ct-segmenter-supports-totalsegmentator-nnu-net-deep-learning/25226 "2022-09-13T13:53:42Z")

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A new engine has been added to “experimental AI” in the Lung CT Segmenter module of the Lung CT Analyzer extension: TotalSegmentator by Jakob Wasserthal (University of Basel and colleagues from DKFZ). Please cite the aut…

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## [Generate VOI on CT and use this VOI on PET data to get activity information](https://discourse.slicer.org/t/generate-voi-on-ct-and-use-this-voi-on-pet-data-to-get-activity-information/25059)

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**Author:** [@Niamh\_Mc\_Ardle](https://discourse.slicer.org/u/Niamh_Mc_Ardle)\
**Replies:** 2\
**Last updated:** [September 13, 2022, 12:42pm UTC](https://discourse.slicer.org/t/generate-voi-on-ct-and-use-this-voi-on-pet-data-to-get-activity-information/25059 "2022-09-13T12:42:14Z")

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Hi there, I am new to 3D Slicer and was looking for an answer to my question in the forum but I haven’t been able to find one yet. I would like to use my CT image to obtain a VOI of the lungs and liver. I would then li…

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## [How to display the label (or Name) of ControlPoint of vtkMRMLMarkupsCurveNode?](https://discourse.slicer.org/t/how-to-display-the-label-or-name-of-controlpoint-of-vtkmrmlmarkupscurvenode/25142)

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**Author:** [@sunshine](https://discourse.slicer.org/u/sunshine)\
**Replies:** 14\
**Last updated:** [September 12, 2022, 7:32pm UTC](https://discourse.slicer.org/t/how-to-display-the-label-or-name-of-controlpoint-of-vtkmrmlmarkupscurvenode/25142 "2022-09-12T19:32:25Z")

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Hi everyone, I have a question about the module Markups. In a PointList, I can see the label (or Name) of each ControlPoint, and I can choose to display or hide it. How can I do the same thing for the MarkupsCurveNode?…

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## [About creating image from IVUS data](https://discourse.slicer.org/t/about-creating-image-from-ivus-data/25217)

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**Author:** [@donghmu](https://discourse.slicer.org/u/donghmu)\
**Replies:** 0\
**Last updated:** [September 12, 2022, 12:55pm UTC](https://discourse.slicer.org/t/about-creating-image-from-ivus-data/25217 "2022-09-12T12:55:49Z")

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Hello, I am currently using Slicer for interpreting my IVUS data. How can I creat the stretch image of the vessel based on the IVUS original data (as displayed by the specific IVUS lab - show below), then I can analyse…

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## [Different between Crop Volume and Segmentation geometry](https://discourse.slicer.org/t/different-between-crop-volume-and-segmentation-geometry/14474)

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**Author:** [@Andreas](https://discourse.slicer.org/u/Andreas)\
**Replies:** 4\
**Last updated:** [September 12, 2022, 11:23am UTC](https://discourse.slicer.org/t/different-between-crop-volume-and-segmentation-geometry/14474 "2022-09-12T11:23:41Z")

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Hello all, what is the difference between the two modules: Crop Volume and Segmentation geometry. (see image) Both can be used to adjust the spacing. What exactly is the difference? best regards

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## [Help in understanding Transforms](https://discourse.slicer.org/t/help-in-understanding-transforms/25214)

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**Author:** [@jegberink](https://discourse.slicer.org/u/jegberink)\
**Replies:** 0\
**Last updated:** [September 12, 2022, 10:58am UTC](https://discourse.slicer.org/t/help-in-understanding-transforms/25214 "2022-09-12T10:58:00Z")

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Hello, I need some help in regards to understanding transforms and how they work. Unfortunately i do not have a background in anything technical or computer science related fields, hence why i’m a bit lost. For backgr…

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## [Measure surface area of a trait from the model](https://discourse.slicer.org/t/measure-surface-area-of-a-trait-from-the-model/25153)

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**Author:** [@sridhar](https://discourse.slicer.org/u/sridhar)\
**Replies:** 10\
**Last updated:** [September 12, 2022, 8:11am UTC](https://discourse.slicer.org/t/measure-surface-area-of-a-trait-from-the-model/25153 "2022-09-12T08:11:31Z")

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Slicer Version: 5-0.2 I am trying to develop a pipeline to measure the eye surface area of butterflies from the entire head segment. Segmenting only the eye surface is extremely difficult, so I am using the following st…

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## [Slicer VMTK LevelSetSegmentation no Start](https://discourse.slicer.org/t/slicer-vmtk-levelsetsegmentation-no-start/18184)

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**Author:** [@Elias\_Karabelas](https://discourse.slicer.org/u/Elias_Karabelas)\
**Replies:** 7\
**Last updated:** [September 12, 2022, 6:32am UTC](https://discourse.slicer.org/t/slicer-vmtk-levelsetsegmentation-no-start/18184 "2022-09-12T06:32:03Z")

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Hi all, so filling out the basics: Operating system: Ubuntu 20.04 Slicer version: 4.11.20210226 Expected behavior: Generating a LevelSetSegmentation of a bunch of coronaries. Actual behavior: So I was able to instal…

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## [Why does Brain Tumor Segmentation type of dataset have no values in the array](https://discourse.slicer.org/t/why-does-brain-tumor-segmentation-type-of-dataset-have-no-values-in-the-array/25205)

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**Author:** [@luna1](https://discourse.slicer.org/u/luna1)\
**Replies:** 1\
**Last updated:** [September 11, 2022, 7:25pm UTC](https://discourse.slicer.org/t/why-does-brain-tumor-segmentation-type-of-dataset-have-no-values-in-the-array/25205 "2022-09-11T19:25:08Z")

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i have been trying to work with BRATS dataset like this one Brain Tumor Segmentation | Kaggle but when i try to load it in 3d slicer then type this command in the python interpretor it tells me that the array only contai…

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## [Exporting multiple segmentations into individual binary labelmaps?](https://discourse.slicer.org/t/exporting-multiple-segmentations-into-individual-binary-labelmaps/24926)

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**Author:** [@dokay1](https://discourse.slicer.org/u/dokay1)\
**Replies:** 2\
**Last updated:** [September 11, 2022, 3:19pm UTC](https://discourse.slicer.org/t/exporting-multiple-segmentations-into-individual-binary-labelmaps/24926 "2022-09-11T15:19:04Z")

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I have a project where we segmented 500 tumors from 50 patients and into a single segmentation with 1 segment per tumor. I want to generate a probability map by adding all 500 lesions into a binary file, then divide it …

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## [Segmentation MRI rat](https://discourse.slicer.org/t/segmentation-mri-rat/16485)

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**Author:** [@gloria](https://discourse.slicer.org/u/gloria)\
**Replies:** 1\
**Last updated:** [April 14, 2021, 4:38am UTC](https://discourse.slicer.org/t/segmentation-mri-rat/16485 "2021-04-14T04:38:38Z")

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Hi I want to know if for the segmentation of gray and white matter of a rat mri I need an atlas or not???

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## [Registration still for help](https://discourse.slicer.org/t/registration-still-for-help/25198)

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**Author:** [@whu](https://discourse.slicer.org/u/whu)\
**Replies:** 0\
**Last updated:** [September 11, 2022, 12:33am UTC](https://discourse.slicer.org/t/registration-still-for-help/25198 "2022-09-11T00:33:04Z")

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Continuing the discussion from Seek for quick registration method: Still for help. thanks.

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## [How to export skull (Only) as OBJ file](https://discourse.slicer.org/t/how-to-export-skull-only-as-obj-file/25191)

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**Author:** [@Prameeth\_Maduwantha](https://discourse.slicer.org/u/Prameeth_Maduwantha)\
**Replies:** 1\
**Last updated:** [September 10, 2022, 9:30pm UTC](https://discourse.slicer.org/t/how-to-export-skull-only-as-obj-file/25191 "2022-09-10T21:30:21Z")

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Hi, I downloaded the sample PreDentalSurgury CBCT file set and I need to export the skull as .OBJ file. Please help me and mention what steps need to perform to do this task.

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## [Why model maker can only create the model from the label map in range 0 to 255?](https://discourse.slicer.org/t/why-model-maker-can-only-create-the-model-from-the-label-map-in-range-0-to-255/25158)

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**Author:** [@wpgao](https://discourse.slicer.org/u/wpgao)\
**Replies:** 2\
**Last updated:** [September 10, 2022, 3:08pm UTC](https://discourse.slicer.org/t/why-model-maker-can-only-create-the-model-from-the-label-map-in-range-0-to-255/25158 "2022-09-10T15:08:21Z")

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In some atlases, there may be more than 255 structures were labeled or some structures were labeled larger than 255. ModelMaker cannot create the models with label larger than 255. Is there any solution? Thanks!

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## [Able to view DCM created with SITK in ITK Snap but not Slicer](https://discourse.slicer.org/t/able-to-view-dcm-created-with-sitk-in-itk-snap-but-not-slicer/25186)

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**Author:** [@SaraLyn](https://discourse.slicer.org/u/SaraLyn)\
**Replies:** 1\
**Last updated:** [September 10, 2022, 12:49pm UTC](https://discourse.slicer.org/t/able-to-view-dcm-created-with-sitk-in-itk-snap-but-not-slicer/25186 "2022-09-10T12:49:53Z")

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Hello! I have written a 3D DCM with SITK and am able to view it in ITK Snap. However, this DCM has color overlays which ITK Snap only displays greyscale, so I would like to view it in Slicer. For this project, the image…

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## [error loading ultrasound .dcm and .vol files](https://discourse.slicer.org/t/error-loading-ultrasound-dcm-and-vol-files/25185)

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**Author:** [@Mariano\_Medd10](https://discourse.slicer.org/u/Mariano_Medd10)\
**Replies:** 0\
**Last updated:** [September 9, 2022, 11:46pm UTC](https://discourse.slicer.org/t/error-loading-ultrasound-dcm-and-vol-files/25185 "2022-09-09T23:46:55Z")

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Hello good afternoon, I have had problems loading different .dcm and .vol files, when loading the file it shows me the message //1: US \[2\] \[Image sequence\]: Image spacing may need to be calibrated for accurate size measu…

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## [RVesselX show current node placement help option](https://discourse.slicer.org/t/rvesselx-show-current-node-placement-help-option/25183)

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**Author:** [@Gonzalo\_Rojas\_Costa](https://discourse.slicer.org/u/Gonzalo_Rojas_Costa)\
**Replies:** 0\
**Last updated:** [September 9, 2022, 9:59pm UTC](https://discourse.slicer.org/t/rvesselx-show-current-node-placement-help-option/25183 "2022-09-09T21:59:13Z")

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Hi: When I tried to use “Show current node placement help” option in RVesselX appears a blanck window. Why?. Sincerely, Gonzalo Rojas Costa

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## [I got a error in the tutorial of "Building Software Systems for Image-Guided Robot-Assisted Interventions"](https://discourse.slicer.org/t/i-got-a-error-in-the-tutorial-of-building-software-systems-for-image-guided-robot-assisted-interventions/25071)

<div class="topic-metadata">

**Author:** [@xiaosnowqiang](https://discourse.slicer.org/u/xiaosnowqiang)\
**Replies:** 1\
**Last updated:** [September 9, 2022, 4:54pm UTC](https://discourse.slicer.org/t/i-got-a-error-in-the-tutorial-of-building-software-systems-for-image-guided-robot-assisted-interventions/25071 "2022-09-09T16:54:02Z")

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Hello guys, I’ve follow the tutorial steps to build the communication between ROS and Slicer,but I got a error when follow the step to launch ‘IGTL Exporter/Importer from a new terminal’: i got the error like below: …

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## [Remove transformed node from the active transformed list via python script](https://discourse.slicer.org/t/remove-transformed-node-from-the-active-transformed-list-via-python-script/25174)

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**Author:** [@Edgaras\_Misiulis](https://discourse.slicer.org/u/Edgaras_Misiulis)\
**Replies:** 1\
**Last updated:** [September 9, 2022, 2:01pm UTC](https://discourse.slicer.org/t/remove-transformed-node-from-the-active-transformed-list-via-python-script/25174 "2022-09-09T14:01:04Z")

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Dear 3D Slicer support, How to remove transformed node from the active transformed list via python script? There is a great tutorial on how to set and observe transformation: https://slicer.readthedocs.io/en/latest/de…

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## [Upside down views from Dental Dicom images](https://discourse.slicer.org/t/upside-down-views-from-dental-dicom-images/25175)

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**Author:** [@Senn](https://discourse.slicer.org/u/Senn)\
**Replies:** 2\
**Last updated:** [September 9, 2022, 12:00pm UTC](https://discourse.slicer.org/t/upside-down-views-from-dental-dicom-images/25175 "2022-09-09T12:00:40Z")

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Hi Community, I am having problems when loading up Dental DICOM images as the Sagittal and Coronal views are being loaded upside down. This does not occur when I open these DICOM images on other platforms. Has anyone e…

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## [How to calculate the closest distance between a control point and a model node](https://discourse.slicer.org/t/how-to-calculate-the-closest-distance-between-a-control-point-and-a-model-node/25151)

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**Author:** [@1023185654](https://discourse.slicer.org/u/1023185654)\
**Replies:** 2\
**Last updated:** [September 9, 2022, 6:20am UTC](https://discourse.slicer.org/t/how-to-calculate-the-closest-distance-between-a-control-point-and-a-model-node/25151 "2022-09-09T06:20:36Z")

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hello, everyone, i have a need. how to calculate the closest distance between a control point and a model node? or here is two model node in the 3D view ,is there any good way to help me know which model did I choose wi…

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## [3D view does not match slices](https://discourse.slicer.org/t/3d-view-does-not-match-slices/24847)

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**Author:** [@baptiste](https://discourse.slicer.org/u/baptiste)\
**Replies:** 2\
**Last updated:** [September 8, 2022, 3:46pm UTC](https://discourse.slicer.org/t/3d-view-does-not-match-slices/24847 "2022-09-08T15:46:25Z")

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Hi. I am trying to register a CT scan to stereotaxic coordinates (where the AP plane passes through the ear canal and lower ridge of the eyes). When I align the 2D slices so that they are roughly in stereotaxic coordina…

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## [How to lock a Markups ControlPoint in 3D only, but allow drag in 2D?](https://discourse.slicer.org/t/how-to-lock-a-markups-controlpoint-in-3d-only-but-allow-drag-in-2d/25159)

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**Author:** [@sunshine](https://discourse.slicer.org/u/sunshine)\
**Replies:** 3\
**Last updated:** [September 8, 2022, 4:31pm UTC](https://discourse.slicer.org/t/how-to-lock-a-markups-controlpoint-in-3d-only-but-allow-drag-in-2d/25159 "2022-09-08T16:31:49Z")

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Hi everyone, I am trying to write my first extension module for annotation using module Markups. Here is my case: I would like to add an annotation to a slicer showing in the Red slice (red window), and allow dragging…

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## [How to toggle slice display in 3D using python code?](https://discourse.slicer.org/t/how-to-toggle-slice-display-in-3d-using-python-code/25157)

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**Author:** [@sunshine](https://discourse.slicer.org/u/sunshine)\
**Replies:** 2\
**Last updated:** [September 8, 2022, 2:56pm UTC](https://discourse.slicer.org/t/how-to-toggle-slice-display-in-3d-using-python-code/25157 "2022-09-08T14:56:44Z")

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Hi everyone, I have a question about window control using python codes. What are the possible functions to call in order to to toggle slice display in 3D using python code? Thank you so much in advance!

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## [Questions about projectSemiLM](https://discourse.slicer.org/t/questions-about-projectsemilm/25125)

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**Author:** [@yyl](https://discourse.slicer.org/u/yyl)\
**Replies:** 4\
**Last updated:** [September 8, 2022, 7:59am UTC](https://discourse.slicer.org/t/questions-about-projectsemilm/25125 "2022-09-08T07:59:44Z")

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Dear all, I successfully transferred semilandmarks from the temple to the specimen, but some semilandmarks have no contact with the surface of the model. Some points run inside the model. I tried to change the Projectio…

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