# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=393

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

**Page:** 394

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## [Can rectangle tool be used to create 2D box proposals in a CT datastet?](https://discourse.slicer.org/t/can-rectangle-tool-be-used-to-create-2d-box-proposals-in-a-ct-datastet/6026)

<div class="topic-metadata">

**Author:** [@David\_D](https://discourse.slicer.org/u/David_D)\
**Replies:** 1\
**Last updated:** [March 5, 2019, 2:27pm UTC](https://discourse.slicer.org/t/can-rectangle-tool-be-used-to-create-2d-box-proposals-in-a-ct-datastet/6026 "2019-03-05T14:27:17Z")

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Slicer neophyte here. I’d like to train an R-CNN to label pathology on CT with box proposals First, can I use the rectangle tool in this way, and save all the box proposals placed throughout the CT as a label map for t…

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## [Improvement display 3d](https://discourse.slicer.org/t/improvement-display-3d/5940)

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**Author:** [@dp1991](https://discourse.slicer.org/u/dp1991)\
**Replies:** 9\
**Last updated:** [March 5, 2019, 12:25pm UTC](https://discourse.slicer.org/t/improvement-display-3d/5940 "2019-03-05T12:25:05Z")

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hi friends i segmented ct images, and output labeled as 50(Esophagus) 100(Heart) 150(Lung\_L) 200(Lung\_R) 250 (Spinal Cord)… now i will display any organ with one color ( for example heart show red and Lung\_L show blue…

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## [VTK User Manual](https://discourse.slicer.org/t/vtk-user-manual/6003)

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**Author:** [@dp1991](https://discourse.slicer.org/u/dp1991)\
**Replies:** 2\
**Last updated:** [March 4, 2019, 1:50pm UTC](https://discourse.slicer.org/t/vtk-user-manual/6003 "2019-03-04T13:50:26Z")

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Hello I need a comprehensive user manual for VTK now i have a user manual but is not good …

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## [Wont open image in Yellow and Green](https://discourse.slicer.org/t/wont-open-image-in-yellow-and-green/5947)

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**Author:** [@Seba](https://discourse.slicer.org/u/Seba)\
**Replies:** 2\
**Last updated:** [March 5, 2019, 12:27am UTC](https://discourse.slicer.org/t/wont-open-image-in-yellow-and-green/5947 "2019-03-05T00:27:29Z")

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Operating system: Win 10 pro Slicer version: 4.10.1 Expected behavior: To open image in all 3 axis Actual behavior: only opens in Axial (Red) and a thin line in sagital (yellow), and coronal (green) Hi there, im ne…

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## [Importing US works for data import but not as dicom import?](https://discourse.slicer.org/t/importing-us-works-for-data-import-but-not-as-dicom-import/4734)

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**Author:** [@EricWilson](https://discourse.slicer.org/u/EricWilson)\
**Replies:** 8\
**Last updated:** [March 4, 2019, 7:51pm UTC](https://discourse.slicer.org/t/importing-us-works-for-data-import-but-not-as-dicom-import/4734 "2019-03-04T19:51:51Z")

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I would like to understand why this doesn’t work. I have an ultrasound scan stored as a dicom file. I have followed the thread of a very similar case involving ultrasound but it gives the same error after installing the …

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## [Determining diameter and lengths of blood vessel](https://discourse.slicer.org/t/determining-diameter-and-lengths-of-blood-vessel/5970)

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**Author:** [@elahe\_heydari](https://discourse.slicer.org/u/elahe_heydari)\
**Replies:** 4\
**Last updated:** [March 4, 2019, 4:43pm UTC](https://discourse.slicer.org/t/determining-diameter-and-lengths-of-blood-vessel/5970 "2019-03-04T16:43:21Z")

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Hi everybody In my project, I need to determined diameter and lengths of vessel. In slicer, How can I do it? I would be really grateful if you let me know your comments. Thanks

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## [Using input transformation in SlicerElastix](https://discourse.slicer.org/t/using-input-transformation-in-slicerelastix/5916)

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**Author:** [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Replies:** 3\
**Last updated:** [March 4, 2019, 3:24pm UTC](https://discourse.slicer.org/t/using-input-transformation-in-slicerelastix/5916 "2019-03-04T15:24:44Z")

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The current version of SlicerElastix actually outputs a transformation, BUT it requires that both input volumes must be aligned each other, which is rarely the case. The moving volume may already have a transformation as…

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## [SlicerRT - VR visualization of Dose & Structures overlayed with CT](https://discourse.slicer.org/t/slicerrt-vr-visualization-of-dose-structures-overlayed-with-ct/6004)

<div class="topic-metadata">

**Author:** [@ahmad](https://discourse.slicer.org/u/ahmad)\
**Replies:** 1\
**Last updated:** [March 4, 2019, 3:01pm UTC](https://discourse.slicer.org/t/slicerrt-vr-visualization-of-dose-structures-overlayed-with-ct/6004 "2019-03-04T15:01:26Z")

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Operating system: Windows Slicer version: 4.10.1 Expected behavior: To show dose color wash and structure using VR Actual behavior: I could not do it I would like to know how SlicerRT can be used to accomplish the fo…

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## [Volume rendering GPU memory requirements](https://discourse.slicer.org/t/volume-rendering-gpu-memory-requirements/5999)

<div class="topic-metadata">

**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 2\
**Last updated:** [March 4, 2019, 2:45pm UTC](https://discourse.slicer.org/t/volume-rendering-gpu-memory-requirements/5999 "2019-03-04T14:45:46Z")

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One of our more recent datasets clocks in at just under 32GB. I was wondering if it would be possible to volume-render this using Slicer - does a volume need to be resident in the GPU’s on board memory in order to be vol…

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## [DICOM import fails](https://discourse.slicer.org/t/dicom-import-fails/5986)

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**Author:** [@margherita](https://discourse.slicer.org/u/margherita)\
**Replies:** 3\
**Last updated:** [March 1, 2019, 7:03pm UTC](https://discourse.slicer.org/t/dicom-import-fails/5986 "2019-03-01T19:03:50Z")

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## [scissors started to be very laggy](https://discourse.slicer.org/t/scissors-started-to-be-very-laggy/5996)

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**Author:** [@froth](https://discourse.slicer.org/u/froth)\
**Replies:** 0\
**Last updated:** [March 2, 2019, 10:55pm UTC](https://discourse.slicer.org/t/scissors-started-to-be-very-laggy/5996 "2019-03-02T22:55:03Z")

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Operating system: MacOS Mojave; Slicer version: 4.10.1 Actual behavior: after vessel segmentation i use scissors which begin to be very laggy. Few months before same taks went smoothly with similar CT data. All thin…

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## [Using pyyaml in Slicer?](https://discourse.slicer.org/t/using-pyyaml-in-slicer/5995)

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**Author:** [@dsikka](https://discourse.slicer.org/u/dsikka)\
**Replies:** 0\
**Last updated:** [March 2, 2019, 8:03pm UTC](https://discourse.slicer.org/t/using-pyyaml-in-slicer/5995 "2019-03-02T20:03:49Z")

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Is there a way to use a yaml parser in Slicer? I tried pip installing pyyaml using the instructions described on this page: https://www.slicer.org/wiki/Documentation/Nightly/Developers/Python\_scripting#How\_to\_run\_pip\_.3…

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## [Using surface cut of segment editor to measure area](https://discourse.slicer.org/t/using-surface-cut-of-segment-editor-to-measure-area/5990)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [March 2, 2019, 4:11am UTC](https://discourse.slicer.org/t/using-surface-cut-of-segment-editor-to-measure-area/5990 "2019-03-02T04:11:19Z")

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I am using surface cut to create freehand polygonial selection. Then, I go an convert this segment to a model to measure its area. However, reported area is twice as large than I expect, since it is also calculating the …

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## [Remote install extensions?](https://discourse.slicer.org/t/remote-install-extensions/5983)

<div class="topic-metadata">

**Author:** [@nagy.attila](https://discourse.slicer.org/u/nagy.attila)\
**Replies:** 3\
**Last updated:** [March 1, 2019, 11:18pm UTC](https://discourse.slicer.org/t/remote-install-extensions/5983 "2019-03-01T23:18:59Z")

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Hi all, we maintain several classrooms with Slicer installs. It is okay, I can do it remotely from a command line, in “silent mode”, I’ve been doing it for years :slight\_smile: But… is there a way to install extensions…

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## [Build Light Weight Robot IGT module](https://discourse.slicer.org/t/build-light-weight-robot-igt-module/5878)

<div class="topic-metadata">

**Author:** [@Mary7291](https://discourse.slicer.org/u/Mary7291)\
**Replies:** 13\
**Last updated:** [March 1, 2019, 9:08pm UTC](https://discourse.slicer.org/t/build-light-weight-robot-igt-module/5878 "2019-03-01T21:08:31Z")

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Operating system:Win 7 Slicer version: build slicer V. 4.11 Expected behavior: Actual behavior: Hello everybody, I tried to build the Light Weight Robot IGT module after building the Slicer on my system. After fixin…

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## [Saving Virtual Reality video capture](https://discourse.slicer.org/t/saving-virtual-reality-video-capture/5977)

<div class="topic-metadata">

**Author:** [@justdcinaus](https://discourse.slicer.org/u/justdcinaus)\
**Replies:** 1\
**Last updated:** [March 1, 2019, 6:45pm UTC](https://discourse.slicer.org/t/saving-virtual-reality-video-capture/5977 "2019-03-01T18:45:27Z")

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Good morning gentle persons. (depending on time zone) I’m now comfortable with both segmenting and creating models, and using Volume Rendering and viewing both in Virtual Reality. However while Screen Capture does a go…

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## [import nrrd segmentation](https://discourse.slicer.org/t/import-nrrd-segmentation/3501)

<div class="topic-metadata">

**Author:** [@margherita](https://discourse.slicer.org/u/margherita)\
**Replies:** 1\
**Last updated:** [July 17, 2018, 1:59pm UTC](https://discourse.slicer.org/t/import-nrrd-segmentation/3501 "2018-07-17T13:59:42Z")

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Hallo i’m new user and i have a problem in importing volume segmentation of lung lesions Exactly i’ve segmented and saved the leasions (the 4 files ) but i cannot reload them into slicer for editing them how can i do i…

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## [Airway tree (Bronchial Trees)](https://discourse.slicer.org/t/airway-tree-bronchial-trees/5984)

<div class="topic-metadata">

**Author:** [@MohammadReza](https://discourse.slicer.org/u/MohammadReza)\
**Replies:** 0\
**Last updated:** [March 1, 2019, 1:17pm UTC](https://discourse.slicer.org/t/airway-tree-bronchial-trees/5984 "2019-03-01T13:17:26Z")

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Operating system: Slicer version: Expected behavior: Actual behavior: I need a 3D Bronchial Trees with all the trees,How can I create that ? would you send me if you have that .stl file,please?

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## [Crop Volume causing failure](https://discourse.slicer.org/t/crop-volume-causing-failure/5573)

<div class="topic-metadata">

**Author:** [@justdcinaus](https://discourse.slicer.org/u/justdcinaus)\
**Replies:** 2\
**Last updated:** [March 1, 2019, 3:32am UTC](https://discourse.slicer.org/t/crop-volume-causing-failure/5573 "2019-03-01T03:32:50Z")

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Good day to you all. I’ve downloaded the latest versions (4.10.1 and 4.11.0 from the 15th Jan) and installed over the top of my previous install folders. I can Segment and use Volume Rendering with no issues, except wh…

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## [Convert DICOM-RT CT image and segmented object into NIFTI format](https://discourse.slicer.org/t/convert-dicom-rt-ct-image-and-segmented-object-into-nifti-format/5968)

<div class="topic-metadata">

**Author:** [@Moran\_Artzi](https://discourse.slicer.org/u/Moran_Artzi)\
**Replies:** 4\
**Last updated:** [February 28, 2019, 8:42pm UTC](https://discourse.slicer.org/t/convert-dicom-rt-ct-image-and-segmented-object-into-nifti-format/5968 "2019-02-28T20:42:39Z")

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For the following RTRSTRUCT data The data is loading successfully on slicer bet I I am trying unsuccessfully to convert to NIFTI file the: The segmented objects The CT image at the space of the segmented object I…

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## [Programmatically update View Controllers and Volume Reslice Driver?](https://discourse.slicer.org/t/programmatically-update-view-controllers-and-volume-reslice-driver/5946)

<div class="topic-metadata">

**Author:** [@dsikka](https://discourse.slicer.org/u/dsikka)\
**Replies:** 1\
**Last updated:** [February 28, 2019, 4:24pm UTC](https://discourse.slicer.org/t/programmatically-update-view-controllers-and-volume-reslice-driver/5946 "2019-02-28T16:24:01Z")

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Hi, Is there a way to programmatically update the axial view of the Red Slice (as we can do using the View Controllers module)? Also, is there a way to progammatically update the Driver and Mode of the Red Slicer as wel…

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## [Issue during loading sequence of jpg files](https://discourse.slicer.org/t/issue-during-loading-sequence-of-jpg-files/5969)

<div class="topic-metadata">

**Author:** [@fhk](https://discourse.slicer.org/u/fhk)\
**Replies:** 2\
**Last updated:** [February 28, 2019, 3:31pm UTC](https://discourse.slicer.org/t/issue-during-loading-sequence-of-jpg-files/5969 "2019-02-28T15:31:01Z")

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Hi, I’m trying to load sequence of jpg files using this guide: https://www.slicer.org/wiki/Documentation/Nightly/FAQ#How\_to\_load\_data\_from\_a\_sequence\_of\_jpg.2C\_tif.2C\_or\_png\_files.3F Unfortunately nothing shows up in da…

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## [Exporting Segmentations to DICOM](https://discourse.slicer.org/t/exporting-segmentations-to-dicom/251)

<div class="topic-metadata">

**Author:** [@SLautenschlaeger](https://discourse.slicer.org/u/SLautenschlaeger)\
**Replies:** 7\
**Last updated:** [February 28, 2019, 11:48am UTC](https://discourse.slicer.org/t/exporting-segmentations-to-dicom/251 "2019-02-28T11:48:42Z")

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Hi together, I'd like to export segmentations to DICOM to import them in other planing systems. However I can only export the CT-Data Set and not the corresponding segmentations. Quantitative reporting and SlicerRT are…

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## [Why did my python slicer extension module loading fail?](https://discourse.slicer.org/t/why-did-my-python-slicer-extension-module-loading-fail/5952)

<div class="topic-metadata">

**Author:** [@John\_DiMatteo](https://discourse.slicer.org/u/John_DiMatteo)\
**Replies:** 3\
**Last updated:** [February 27, 2019, 11:22pm UTC](https://discourse.slicer.org/t/why-did-my-python-slicer-extension-module-loading-fail/5952 "2019-02-27T23:22:45Z")

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Operating system: Linux Mint Tara (Ubuntu 18.04 Bionic) Slicer version: 4.10.0 Expected behavior: Loading of module or an explanation of why loading failed Actual behavior: Module loading failed with no details Hi Al…

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## [How to Split Up VTK Fiber Bundle Files](https://discourse.slicer.org/t/how-to-split-up-vtk-fiber-bundle-files/5856)

<div class="topic-metadata">

**Author:** [@rpl6](https://discourse.slicer.org/u/rpl6)\
**Replies:** 11\
**Last updated:** [February 27, 2019, 3:47pm UTC](https://discourse.slicer.org/t/how-to-split-up-vtk-fiber-bundle-files/5856 "2019-02-27T15:47:55Z")

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Hello everyone, I was wondering if there was a way to split up a VTK fiber bundle file into smaller parts (or multiple smaller files) for more manageable processing. I am currently working with Slicer Python, but I woul…

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## [Landmark Registration](https://discourse.slicer.org/t/landmark-registration/5943)

<div class="topic-metadata">

**Author:** [@yalshara](https://discourse.slicer.org/u/yalshara)\
**Replies:** 1\
**Last updated:** [February 27, 2019, 3:01pm UTC](https://discourse.slicer.org/t/landmark-registration/5943 "2019-02-27T15:01:35Z")

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Problem report for Slicer 4.11.0-2019-02-19 macosx-amd64: \[please describe expected and actual behavior\] I am trying to place landmarks using the landmark registration module but I cannot move the landmarks once they’ve …

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## [Error when i run plot example](https://discourse.slicer.org/t/error-when-i-run-plot-example/5928)

<div class="topic-metadata">

**Author:** [@dp1991](https://discourse.slicer.org/u/dp1991)\
**Replies:** 6\
**Last updated:** [February 27, 2019, 5:14am UTC](https://discourse.slicer.org/t/error-when-i-run-plot-example/5928 "2019-02-27T05:14:12Z")

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hi friends i run this example https://vtk.org/Wiki/VTK/Examples/Cxx/Plotting/ScatterPlot but i receive error i attach images that show program and error how can i resolve it ??

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## [Combining Multiple Directional Series ](https://discourse.slicer.org/t/combining-multiple-directional-series/5939)

<div class="topic-metadata">

**Author:** [@Jake\_Powell](https://discourse.slicer.org/u/Jake_Powell)\
**Replies:** 1\
**Last updated:** [February 27, 2019, 3:09am UTC](https://discourse.slicer.org/t/combining-multiple-directional-series/5939 "2019-02-27T03:09:38Z")

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I have DICOM files from a brain MRI but they are separated into axial, coronal, and sagittal series and thus I cant work with them together as one volume. If I try the other two planes appear blurry. Is there way to com…

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## [Tutorial for doing Segmentation](https://discourse.slicer.org/t/tutorial-for-doing-segmentation/5348)

<div class="topic-metadata">

**Author:** [@f10w](https://discourse.slicer.org/u/f10w)\
**Replies:** 6\
**Last updated:** [February 26, 2019, 3:37pm UTC](https://discourse.slicer.org/t/tutorial-for-doing-segmentation/5348 "2019-02-26T15:37:45Z")

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Hello everybody, I am working on creating annotated segmentation data for a project and a colleague recommended me to use 3D Slicer for the task. I have installed 3D Slicer as well as its SlicerRT extension and have su…

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## [Threshold/Hounsfield unit For different series](https://discourse.slicer.org/t/threshold-hounsfield-unit-for-different-series/5930)

<div class="topic-metadata">

**Author:** [@prorai](https://discourse.slicer.org/u/prorai)\
**Replies:** 1\
**Last updated:** [February 26, 2019, 1:47pm UTC](https://discourse.slicer.org/t/threshold-hounsfield-unit-for-different-series/5930 "2019-02-26T13:47:22Z")

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Hi i’m using the Slicer from few days , and i saw that for different series the threshold value is different for same body part. for example bone threshold value for each body part should be same but it doesn’t work simi…

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