# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=305

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

**Page:** 306

---

## [How to process multi images in swiss skull stripper](https://discourse.slicer.org/t/how-to-process-multi-images-in-swiss-skull-stripper/15188)

<div class="topic-metadata">

**Author:** [@lhhhhh5632](https://discourse.slicer.org/u/lhhhhh5632)\
**Replies:** 1\
**Last updated:** [December 22, 2020, 8:49pm UTC](https://discourse.slicer.org/t/how-to-process-multi-images-in-swiss-skull-stripper/15188 "2020-12-22T20:49:30Z")

</div>

Hello! The extension module ‘swiss skull stripper’ works very well. But I have to process images one by one now. I don’t know how to process multiple 3d images at one time.I guess maybe there’s a faster way. My dataset…

---

## [Export 3D view to .obj file](https://discourse.slicer.org/t/export-3d-view-to-obj-file/15154)

<div class="topic-metadata">

**Author:** [@SteveJJ](https://discourse.slicer.org/u/SteveJJ)\
**Replies:** 1\
**Last updated:** [December 22, 2020, 10:58am UTC](https://discourse.slicer.org/t/export-3d-view-to-obj-file/15154 "2020-12-22T10:58:18Z")

</div>

Hello I want to export the 3D view to an obj file so that I can view in augmented reality on an ipad. Any ideas if this is possible? I include a screenshot for reference. I know that segmentations can be exported ea…

---

## [Lung CT Analyzer has new Wiki](https://discourse.slicer.org/t/lung-ct-analyzer-has-new-wiki/15189)

<div class="topic-metadata">

**Author:** [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Replies:** 0\
**Last updated:** [December 22, 2020, 10:23am UTC](https://discourse.slicer.org/t/lung-ct-analyzer-has-new-wiki/15189 "2020-12-22T10:23:22Z")

</div>

This is a short notification that a new Wiki with detailed instructions and screenshots has been added to the Lung CT Analyzer extension. Link to the Wiki

---

## [Problem with ViewInteractiveWidget - no output visible](https://discourse.slicer.org/t/problem-with-viewinteractivewidget-no-output-visible/14962)

<div class="topic-metadata">

**Author:** [@seaninko](https://discourse.slicer.org/u/seaninko)\
**Replies:** 4\
**Last updated:** [December 22, 2020, 9:01am UTC](https://discourse.slicer.org/t/problem-with-viewinteractivewidget-no-output-visible/14962 "2020-12-22T09:01:15Z")

</div>

Hello, I have a problem with ViewInteractiveWidget method. It works fine when I launch jupyter server within Slicer, but when I use an external jupyter server it just shows the empty output cell without any rendering. N…

---

## [Error executing Slicer 4.11.2020](https://discourse.slicer.org/t/error-executing-slicer-4-11-2020/15178)

<div class="topic-metadata">

**Author:** [@panizo\_ol](https://discourse.slicer.org/u/panizo_ol)\
**Replies:** 1\
**Last updated:** [December 22, 2020, 4:20am UTC](https://discourse.slicer.org/t/error-executing-slicer-4-11-2020/15178 "2020-12-22T04:20:20Z")

</div>

When running slider 4.11.2020 after installing it, the error 0xc0000017 appears in windows10 (Google translated from original: “Al momento de ejecutar slider 4.11.2020 despues de instalarlo aparece el error 0xc0000017…

---

## [Create Histogram from Hounsfield Units](https://discourse.slicer.org/t/create-histogram-from-hounsfield-units/15165)

<div class="topic-metadata">

**Author:** [@Dave](https://discourse.slicer.org/u/Dave)\
**Replies:** 1\
**Last updated:** [December 22, 2020, 1:04am UTC](https://discourse.slicer.org/t/create-histogram-from-hounsfield-units/15165 "2020-12-22T01:04:13Z")

</div>

Operating System: Windows 10 Slicer version: 4.10.1 Hi, I am trying to get a histogram from a segmented region in order to set a threshold for further precise segmentations. I’ve downloaded and installed the extension…

---

## [Reproduce Segmentation Pipeline from thresholding](https://discourse.slicer.org/t/reproduce-segmentation-pipeline-from-thresholding/15170)

<div class="topic-metadata">

**Author:** [@Optimox](https://discourse.slicer.org/u/Optimox)\
**Replies:** 4\
**Last updated:** [December 21, 2020, 10:23pm UTC](https://discourse.slicer.org/t/reproduce-segmentation-pipeline-from-thresholding/15170 "2020-12-21T22:23:53Z")

</div>

Hi, I am currently using 3DSlicer to visualize segmentations coming from another framework. Here is my pipeline: load a 3D tiff, that contains segmentation by voxels, i.e all voxels with value equals to 10 represents…

---

## [Extract images from CD](https://discourse.slicer.org/t/extract-images-from-cd/15137)

<div class="topic-metadata">

**Author:** [@Valentina\_Mejia\_Gall](https://discourse.slicer.org/u/Valentina_Mejia_Gall)\
**Replies:** 5\
**Last updated:** [December 21, 2020, 5:43pm UTC](https://discourse.slicer.org/t/extract-images-from-cd/15137 "2020-12-21T17:43:31Z")

</div>

Hello, I have a CD with all the information of a ct scan and x-ray, there is a carpet that says DICOM so when i tried to upload this carpet to 3dSlicer it appears desorganized or like this (images attached). How can i o…

---

## [Problems running SlicerJupyter on MacOS](https://discourse.slicer.org/t/problems-running-slicerjupyter-on-macos/15082)

<div class="topic-metadata">

**Author:** [@jsalas424](https://discourse.slicer.org/u/jsalas424)\
**Replies:** 6\
**Last updated:** [December 21, 2020, 4:11pm UTC](https://discourse.slicer.org/t/problems-running-slicerjupyter-on-macos/15082 "2020-12-21T16:11:36Z")

</div>

I was trying to get the app working by following the instructions here: GitHub - Slicer/SlicerJupyter: Extension for 3D Slicer that allows the application to be used from Jupyter notebook I started the Jupyter Server fr…

---

## [Volumes module Histogram responsiveness](https://discourse.slicer.org/t/volumes-module-histogram-responsiveness/15072)

<div class="topic-metadata">

**Author:** [@giovform](https://discourse.slicer.org/u/giovform)\
**Replies:** 8\
**Last updated:** [December 21, 2020, 3:10pm UTC](https://discourse.slicer.org/t/volumes-module-histogram-responsiveness/15072 "2020-12-21T15:10:06Z")

</div>

Hi, are there any plans to improve the Histogram responsiveness from Volumes module? I have a rather large volume, with dimensions 923x932x1771 and the Histogram is just too slow to be usable in this case. I am using nig…

---

## [Quick color assignment](https://discourse.slicer.org/t/quick-color-assignment/15140)

<div class="topic-metadata">

**Author:** [@NoobForSlicer](https://discourse.slicer.org/u/NoobForSlicer)\
**Replies:** 3\
**Last updated:** [December 20, 2020, 9:37pm UTC](https://discourse.slicer.org/t/quick-color-assignment/15140 "2020-12-20T21:37:28Z")

</div>

hello, I was wondering if there is an easy way to assign colors to segmentation. As for now I have to always acces each segmentation and then pick each color separately for each segmentation. is there some easy way to …

---

## [Improvements to consider](https://discourse.slicer.org/t/improvements-to-consider/14047)

<div class="topic-metadata">

**Author:** [@CaptainR](https://discourse.slicer.org/u/CaptainR)\
**Replies:** 25\
**Last updated:** [December 20, 2020, 5:42pm UTC](https://discourse.slicer.org/t/improvements-to-consider/14047 "2020-12-20T17:42:03Z")

</div>

Hi, I really enjoyed using slicer, it is trully a great software. Few improvements that may be considered: in segment editor: default setting for override other segments should be none (otherwise it is the best way to…

---

## [4D registration error with Elastix Registration](https://discourse.slicer.org/t/4d-registration-error-with-elastix-registration/15155)

<div class="topic-metadata">

**Author:** [@marianaslicer](https://discourse.slicer.org/u/marianaslicer)\
**Replies:** 0\
**Last updated:** [December 20, 2020, 4:00pm UTC](https://discourse.slicer.org/t/4d-registration-error-with-elastix-registration/15155 "2020-12-20T16:00:50Z")

</div>

Hi everyone, I’m on the preview release version (4.13) and I’m using the Slicer Elastix module to perform non-rigid registration in the 4D CT dataset of lungs. Firstly, I tried to use the default preset (rigid + bspline…

---

## [Automatic point setting of bone structures in DICOMs](https://discourse.slicer.org/t/automatic-point-setting-of-bone-structures-in-dicoms/15125)

<div class="topic-metadata">

**Author:** [@DICOMonist](https://discourse.slicer.org/u/DICOMonist)\
**Replies:** 7\
**Last updated:** [December 19, 2020, 10:50pm UTC](https://discourse.slicer.org/t/automatic-point-setting-of-bone-structures-in-dicoms/15125 "2020-12-19T22:50:06Z")

</div>

Hey there, Someone in here editing DICOMs? I want to determine the lowest point of the mandibular ramus (gradient = 0) in a 3D-reconstruction DICOM file. So I already seperarated the section of the ramus via python in …

---

## [Extract region from a model by having another model](https://discourse.slicer.org/t/extract-region-from-a-model-by-having-another-model/15145)

<div class="topic-metadata">

**Author:** [@shahrokh](https://discourse.slicer.org/u/shahrokh)\
**Replies:** 0\
**Last updated:** [December 19, 2020, 11:53am UTC](https://discourse.slicer.org/t/extract-region-from-a-model-by-having-another-model/15145 "2020-12-19T11:53:59Z")

</div>

Hello Dear Developers and Users In the following figure, I want to extract a part of the model, with the name of wholeLungVesselParticles, that is inside the spherical model, with the name of ROI, and remove regions of …

---

## [How to calculate spatial coordinate in Image coordinate system by having spatial coordinate in RAS coordiane ststem?](https://discourse.slicer.org/t/how-to-calculate-spatial-coordinate-in-image-coordinate-system-by-having-spatial-coordinate-in-ras-coordiane-ststem/14908)

<div class="topic-metadata">

**Author:** [@shahrokh](https://discourse.slicer.org/u/shahrokh)\
**Replies:** 12\
**Last updated:** [December 19, 2020, 11:38am UTC](https://discourse.slicer.org/t/how-to-calculate-spatial-coordinate-in-image-coordinate-system-by-having-spatial-coordinate-in-ras-coordiane-ststem/14908 "2020-12-19T11:38:22Z")

</div>

Hello Dear Developers and Users I have a number of points (approximately 48000 points). I think that their spatial coordinates are in RAS coordinate system, for example: -146.4141082763672 66.66109466552734 -923.…

---

## [3D Slicer + VMTK extension on MRI Time-of-flight for cerebrovascular segmentation](https://discourse.slicer.org/t/3d-slicer-vmtk-extension-on-mri-time-of-flight-for-cerebrovascular-segmentation/15062)

<div class="topic-metadata">

**Author:** [@Jebs\_Maf](https://discourse.slicer.org/u/Jebs_Maf)\
**Replies:** 1\
**Last updated:** [December 14, 2020, 9:59pm UTC](https://discourse.slicer.org/t/3d-slicer-vmtk-extension-on-mri-time-of-flight-for-cerebrovascular-segmentation/15062 "2020-12-14T21:59:20Z")

</div>

Operating system: Mac OS v.10.14.6 Slicer version: v.4.11 Expected behavior: I tried to segment the cerebrovasculature from MRI ToF images using the local threshold feature on “Segmentation”, as seen in this youtube tu…

---

## [Slice order in dicom loader](https://discourse.slicer.org/t/slice-order-in-dicom-loader/15129)

<div class="topic-metadata">

**Author:** [@sogo](https://discourse.slicer.org/u/sogo)\
**Replies:** 2\
**Last updated:** [December 18, 2020, 11:21pm UTC](https://discourse.slicer.org/t/slice-order-in-dicom-loader/15129 "2020-12-18T23:21:49Z")

</div>

Hi, I wanted to confirm the mechanism with which Slicer orders dicom slices. I need the slice order (basically z-coordinate value) with filenames to write to csv for my application use and I found that the examineFiles …

---

## [Transform between two models](https://discourse.slicer.org/t/transform-between-two-models/15126)

<div class="topic-metadata">

**Author:** [@mms25](https://discourse.slicer.org/u/mms25)\
**Replies:** 0\
**Last updated:** [December 17, 2020, 10:39pm UTC](https://discourse.slicer.org/t/transform-between-two-models/15126 "2020-12-17T22:39:37Z")

</div>

Operating system: Windows 10 Slicer version: 4.11.2 Expected behavior: I import two models into 3D Slicer. They are the same model but one is rotated and translated by an unknown amount. Since when I import the models …

---

## [Error: Could not load: 801: Unnamed Series as a Scalar Volume](https://discourse.slicer.org/t/error-could-not-load-801-unnamed-series-as-a-scalar-volume/15119)

<div class="topic-metadata">

**Author:** [@Mgi](https://discourse.slicer.org/u/Mgi)\
**Replies:** 1\
**Last updated:** [December 17, 2020, 10:14pm UTC](https://discourse.slicer.org/t/error-could-not-load-801-unnamed-series-as-a-scalar-volume/15119 "2020-12-17T22:14:28Z")

</div>

Hi Forum, I’m tryin to load a DICOM file from PET series and DICOM RT from PET segmentation but an error message appear: “Could not load Unnamed Series as a Scalar Volume”. Help me! please! I’m using Windows 10 OS and 3D…

---

## [Segment Mesher to generate volumetric mesh - Offset issue](https://discourse.slicer.org/t/segment-mesher-to-generate-volumetric-mesh-offset-issue/14959)

<div class="topic-metadata">

**Author:** [@suranga](https://discourse.slicer.org/u/suranga)\
**Replies:** 5\
**Last updated:** [December 17, 2020, 9:50pm UTC](https://discourse.slicer.org/t/segment-mesher-to-generate-volumetric-mesh-offset-issue/14959 "2020-12-17T21:50:39Z")

</div>

I’m using a publicly available dataset which consists of both CT volume and corresponding segmentation mask in nifti format. This image volume consists of below set of categories. 0: Background (None of the following or…

---

## [Convert mhd file from RPI to RAI](https://discourse.slicer.org/t/convert-mhd-file-from-rpi-to-rai/15117)

<div class="topic-metadata">

**Author:** [@suranga](https://discourse.slicer.org/u/suranga)\
**Replies:** 1\
**Last updated:** [December 17, 2020, 5:23pm UTC](https://discourse.slicer.org/t/convert-mhd-file-from-rpi-to-rai/15117 "2020-12-17T17:23:14Z")

</div>

I have load a CT volume to the 3D slicer and centred it and saved it as a mhd file. The header file is shown below and it is in RPI orientation. Now I want to convert this into RAI orientation. How can I do that using t…

---

## [3D Slicer Download Links - Not Working](https://discourse.slicer.org/t/3d-slicer-download-links-not-working/15116)

<div class="topic-metadata">

**Author:** [@jtsigarides](https://discourse.slicer.org/u/jtsigarides)\
**Replies:** 2\
**Last updated:** [December 17, 2020, 3:48pm UTC](https://discourse.slicer.org/t/3d-slicer-download-links-not-working/15116 "2020-12-17T15:48:10Z")

</div>

Hi there, I am very interested in downloading the MacOs version of 3DSlicer. Unfortunately, although i’ve tried multiple links it seems that they are not working. https://download.slicer.org/ seems to be working but the…

---

## [Cant download slicer extensions manually](https://discourse.slicer.org/t/cant-download-slicer-extensions-manually/15114)

<div class="topic-metadata">

**Author:** [@DimaLat](https://discourse.slicer.org/u/DimaLat)\
**Replies:** 1\
**Last updated:** [December 17, 2020, 2:32pm UTC](https://discourse.slicer.org/t/cant-download-slicer-extensions-manually/15114 "2020-12-17T14:32:40Z")

</div>

I’m trying to download MatlabBridge manually by following instruction by this link: https://www.slicer.org/wiki/Documentation/4.8/SlicerApplication/ExtensionsManager And the problem is that i cant open this site, to ge…

---

## [Smoothing of STL file?](https://discourse.slicer.org/t/smoothing-of-stl-file/14925)

<div class="topic-metadata">

**Author:** [@Keegan\_Selig](https://discourse.slicer.org/u/Keegan_Selig)\
**Replies:** 1\
**Last updated:** [December 7, 2020, 10:11pm UTC](https://discourse.slicer.org/t/smoothing-of-stl-file/14925 "2020-12-07T22:11:44Z")

</div>

Operating system: Windows 10 Slicer version: 4.10.2 Hi there, I am wondering what type of smoothing is applied to a segmentation once it is exported using the “Export to files…” function when it is exported as a STL. …

---

## [Peritumoral volume segmentation](https://discourse.slicer.org/t/peritumoral-volume-segmentation/15103)

<div class="topic-metadata">

**Author:** [@jianyuan](https://discourse.slicer.org/u/jianyuan)\
**Replies:** 3\
**Last updated:** [December 17, 2020, 2:18am UTC](https://discourse.slicer.org/t/peritumoral-volume-segmentation/15103 "2020-12-17T02:18:05Z")

</div>

Hi, I want to delineate peritumoral volume using my 3D-slicer. The segmentation of tumor has been conducted along the boundary of pulmonary nodules (the gray area in the picture). Now I wonder whether the volume can b…

---

## [Quantitative analysis in critical Care Lung CT](https://discourse.slicer.org/t/quantitative-analysis-in-critical-care-lung-ct/11452)

<div class="topic-metadata">

**Author:** [@titotitoide](https://discourse.slicer.org/u/titotitoide)\
**Replies:** 3\
**Last updated:** [December 16, 2020, 9:26pm UTC](https://discourse.slicer.org/t/quantitative-analysis-in-critical-care-lung-ct/11452 "2020-12-16T21:26:42Z")

</div>

Hi everyone! First of all thanks for this amazing, stunning and overwhelming software. I am working with lung CT in critical care where usually patients are sick and have an abnormal lung CT with lung collapse and huge …

---

## [I want to modify the nrrd file with the segmented Labelmaps](https://discourse.slicer.org/t/i-want-to-modify-the-nrrd-file-with-the-segmented-labelmaps/8079)

<div class="topic-metadata">

**Author:** [@kscript](https://discourse.slicer.org/u/kscript)\
**Replies:** 3\
**Last updated:** [December 16, 2020, 5:39pm UTC](https://discourse.slicer.org/t/i-want-to-modify-the-nrrd-file-with-the-segmented-labelmaps/8079 "2020-12-16T17:39:23Z")

</div>

I want to save the segmented Labelmpas as nrrd and open this file again to add, delete or smooth the Labelmap. I tried opening the saved nrrd file but couldn’t find the function I wanted. Doesn’t the 3D Slicer provide …

---

## [Evaluating registration error](https://discourse.slicer.org/t/evaluating-registration-error/3091)

<div class="topic-metadata">

**Author:** [@DavideBassano](https://discourse.slicer.org/u/DavideBassano)\
**Replies:** 4\
**Last updated:** [December 16, 2020, 2:06pm UTC](https://discourse.slicer.org/t/evaluating-registration-error/3091 "2020-12-16T14:06:45Z")

</div>

Hello, I have to do registration of 2 similar volumes: one from a CT (dicom file) and one is a .stl file I created. I did the manual registration overlapping them. I need to know if the .stl volume I created is simila…

---

## [Compilation error on Ubuntu 20.10](https://discourse.slicer.org/t/compilation-error-on-ubuntu-20-10/14946)

<div class="topic-metadata">

**Author:** [@CiroRaggio](https://discourse.slicer.org/u/CiroRaggio)\
**Replies:** 8\
**Last updated:** [December 16, 2020, 10:34am UTC](https://discourse.slicer.org/t/compilation-error-on-ubuntu-20-10/14946 "2020-12-16T10:34:52Z")

</div>

Hi all, I tried to compile Slicer on Ubuntu 20.10, I had the following error: \*\*\[99%\] Performing configure step for 'Slicer' \* \*loading initial cache file /home/ciro/Scrivania/Slicer/Slicer-SuperBuild-Debug/Slicer-p…

[Previous page](https://discourse.slicer.org/c/support/11.md?page=304)

[Next page](https://discourse.slicer.org/c/support/11.md?page=306)