# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=328

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

**Page:** 329

---

## [3D View Lag when Hundreds of Models Loaded and OpenIGTLinkIF Running](https://discourse.slicer.org/t/3d-view-lag-when-hundreds-of-models-loaded-and-openigtlinkif-running/12792)

<div class="topic-metadata">

**Author:** [@Ryan\_Morrison](https://discourse.slicer.org/u/Ryan_Morrison)\
**Replies:** 4\
**Last updated:** [August 4, 2020, 2:27am UTC](https://discourse.slicer.org/t/3d-view-lag-when-hundreds-of-models-loaded-and-openigtlinkif-running/12792 "2020-08-04T02:27:03Z")

</div>

Slicer Version: 4.11.0 PC: Windows 10, AMD 8320, 8Gb RAM, GTX660ti 3Gb My issue comes in the second I turn on OpenIGTLinkIF to view live motion tracker data when ~500 models are loaded into the 3D View. Slicer lags sig…

---

## [N4 Bias Field Correction in sitk](https://discourse.slicer.org/t/n4-bias-field-correction-in-sitk/12837)

<div class="topic-metadata">

**Author:** [@xlucox](https://discourse.slicer.org/u/xlucox)\
**Replies:** 1\
**Last updated:** [August 3, 2020, 7:18pm UTC](https://discourse.slicer.org/t/n4-bias-field-correction-in-sitk/12837 "2020-08-03T19:18:31Z")

</div>

Hi everyone, I’ve been trying to automatize the application of N4 Bias Field Correction in python. I though it would be a good idea to use sitk. The fact is when I configure the class N4BiasFieldCorrectionImageFilter wi…

---

## [Slicer downloads are warned as unsecure by Google Chrome](https://discourse.slicer.org/t/slicer-downloads-are-warned-as-unsecure-by-google-chrome/12836)

<div class="topic-metadata">

**Author:** [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Replies:** 1\
**Last updated:** [August 3, 2020, 5:48pm UTC](https://discourse.slicer.org/t/slicer-downloads-are-warned-as-unsecure-by-google-chrome/12836 "2020-08-03T17:48:32Z")

</div>

With more recent versions of Google Chrome, downloading Slicer preview results in a warning that it can’t be downloaded securely. The download link being an HTTP source such as http://slicer.kitware.com/midas3/api/res…

---

## [Volume measurement of the vessel model](https://discourse.slicer.org/t/volume-measurement-of-the-vessel-model/12834)

<div class="topic-metadata">

**Author:** [@Andreas](https://discourse.slicer.org/u/Andreas)\
**Replies:** 1\
**Last updated:** [August 3, 2020, 3:58pm UTC](https://discourse.slicer.org/t/volume-measurement-of-the-vessel-model/12834 "2020-08-03T15:58:41Z")

</div>

Hello, I have printed a vessel model (3D) and would like to use the main branch (approx. 5.6mm) with a syringe /cannula (approx.3.5mm) to introduce a liquid to determine the volume of the vessel. My problem is the tran…

---

## [Centerline problem](https://discourse.slicer.org/t/centerline-problem/12824)

<div class="topic-metadata">

**Author:** [@Romeo\_Guevara](https://discourse.slicer.org/u/Romeo_Guevara)\
**Replies:** 1\
**Last updated:** [August 3, 2020, 2:35am UTC](https://discourse.slicer.org/t/centerline-problem/12824 "2020-08-03T02:35:58Z")

</div>

Good evening, I wanted to report that the “extract centerline” module is not working properly, it is not recognizing the “endpoints” well, sometimes it recognizes them and sometimes not, this did not happen a few days ag…

---

## [Transform Problem](https://discourse.slicer.org/t/transform-problem/11923)

<div class="topic-metadata">

**Author:** [@Jini](https://discourse.slicer.org/u/Jini)\
**Replies:** 7\
**Last updated:** [August 2, 2020, 2:09pm UTC](https://discourse.slicer.org/t/transform-problem/11923 "2020-08-02T14:09:10Z")

</div>

Operating system: Slicer version: 4.11.0-2019-11-28 Expected behavior: Actual behavior: Hello, I segmentation two model from two CT-scan 1)Sometimes when I transform two models with Finducial markups and General Br…

---

## [How to import couple dicom files](https://discourse.slicer.org/t/how-to-import-couple-dicom-files/12812)

<div class="topic-metadata">

**Author:** [@Vitalii\_Shmadiuk](https://discourse.slicer.org/u/Vitalii_Shmadiuk)\
**Replies:** 1\
**Last updated:** [August 1, 2020, 4:25am UTC](https://discourse.slicer.org/t/how-to-import-couple-dicom-files/12812 "2020-08-01T04:25:17Z")

</div>

Hi, can you help mi please. How to import couple around 30 small dicom files? That files it is a segmentation of one hall Dicom file.

---

## [How to display scale next to a lookup table](https://discourse.slicer.org/t/how-to-display-scale-next-to-a-lookup-table/12804)

<div class="topic-metadata">

**Author:** [@Ashwin](https://discourse.slicer.org/u/Ashwin)\
**Replies:** 1\
**Last updated:** [July 31, 2020, 6:45pm UTC](https://discourse.slicer.org/t/how-to-display-scale-next-to-a-lookup-table/12804 "2020-07-31T18:45:24Z")

</div>

Operating system: Windows 10 Pro 64 Bit Slicer version: 4.10.2 Expected behavior: Actual behavior: I have applied the rainbow lookup table to an ADC image however I cannot see its scale.

---

## [Slicer startmene shortcuts are missing on windows since 7/28](https://discourse.slicer.org/t/slicer-startmene-shortcuts-are-missing-on-windows-since-7-28/12810)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [July 31, 2020, 6:06pm UTC](https://discourse.slicer.org/t/slicer-startmene-shortcuts-are-missing-on-windows-since-7-28/12810 "2020-07-31T18:06:55Z")

</div>

I thought that was just an one of thing, but for the last three days every Slicer install is missing the start menu shortcut on windows. The menu below should display 07-28 and 07-30. Contents of AppData/Local/NA-MIC …

---

## [How to load 2 different DICOM files next to one another to Compare](https://discourse.slicer.org/t/how-to-load-2-different-dicom-files-next-to-one-another-to-compare/12803)

<div class="topic-metadata">

**Author:** [@Ashwin](https://discourse.slicer.org/u/Ashwin)\
**Replies:** 2\
**Last updated:** [July 31, 2020, 5:00am UTC](https://discourse.slicer.org/t/how-to-load-2-different-dicom-files-next-to-one-another-to-compare/12803 "2020-07-31T05:00:27Z")

</div>

Operating system: Windows 10 Pro 64 Bit Slicer version: 4.10.2 Expected behavior: Actual behavior: I am trying to compare a DWI image to an ADC image for the same patient and want to load them next to one another, ho…

---

## [problem with volume rendering](https://discourse.slicer.org/t/problem-with-volume-rendering/12799)

<div class="topic-metadata">

**Author:** [@Rush68](https://discourse.slicer.org/u/Rush68)\
**Replies:** 1\
**Last updated:** [July 31, 2020, 12:30am UTC](https://discourse.slicer.org/t/problem-with-volume-rendering/12799 "2020-07-31T00:30:50Z")

</div>

Operating system win 7, slicer version4.10.2 r28257 Hello I have a problem loading dicom files and I cannot render the volume, this is the message it gives me Could not load: - as a 21 frames Multi Volume by ImagePosit…

---

## [Import Folder Structure in Windows Explorer to Subject Hierarchy](https://discourse.slicer.org/t/import-folder-structure-in-windows-explorer-to-subject-hierarchy/12796)

<div class="topic-metadata">

**Author:** [@Ryan\_Morrison](https://discourse.slicer.org/u/Ryan_Morrison)\
**Replies:** 6\
**Last updated:** [July 30, 2020, 8:23pm UTC](https://discourse.slicer.org/t/import-folder-structure-in-windows-explorer-to-subject-hierarchy/12796 "2020-07-30T20:23:24Z")

</div>

Is there a way to import a bunch of models into the subject hierarchy while maintaining their folder structure? It would be nice to not have to manually create the folder structure in slicer. Windows explorer: Slice…

---

## [Need help! Saved scene will not load. ](https://discourse.slicer.org/t/need-help-saved-scene-will-not-load/12777)

<div class="topic-metadata">

**Author:** [@Taylor](https://discourse.slicer.org/u/Taylor)\
**Replies:** 2\
**Last updated:** [July 30, 2020, 12:08am UTC](https://discourse.slicer.org/t/need-help-saved-scene-will-not-load/12777 "2020-07-30T00:08:19Z")

</div>

Hello Slicer community, I am relatively new to slicer, and I am having a problem loading a saved scene that I have been working on the past few months. Until now, the scene would load fine after saving data, turning off…

---

## [Slicer crashes when loading segmentation editor](https://discourse.slicer.org/t/slicer-crashes-when-loading-segmentation-editor/12781)

<div class="topic-metadata">

**Author:** [@Bo\_Lan](https://discourse.slicer.org/u/Bo_Lan)\
**Replies:** 1\
**Last updated:** [July 29, 2020, 11:13pm UTC](https://discourse.slicer.org/t/slicer-crashes-when-loading-segmentation-editor/12781 "2020-07-29T23:13:28Z")

</div>

Hi all! So I am segmenting using 3D slicer and finished almost all of my project and saved it last night, but then today when I open up my segmentations saved from yesterday and attempt to open up segmentation editor, th…

---

## [Uploading files](https://discourse.slicer.org/t/uploading-files/12780)

<div class="topic-metadata">

**Author:** [@Mark\_Brahier](https://discourse.slicer.org/u/Mark_Brahier)\
**Replies:** 1\
**Last updated:** [July 29, 2020, 10:20pm UTC](https://discourse.slicer.org/t/uploading-files/12780 "2020-07-29T22:20:02Z")

</div>

I recently saved a segmentation (see image of saved files). When I now try to re-upload the segmentation to Slicer, it appears only as a black screen (see image). Why won’t the segmentations appear? I appreciate any help…

---

## [The SlicerDMRI extension is currently unavailable.](https://discourse.slicer.org/t/the-slicerdmri-extension-is-currently-unavailable/12276)

<div class="topic-metadata">

**Author:** [@KIM\_TY](https://discourse.slicer.org/u/KIM_TY)\
**Replies:** 25\
**Last updated:** [July 29, 2020, 7:59pm UTC](https://discourse.slicer.org/t/the-slicerdmri-extension-is-currently-unavailable/12276 "2020-07-29T19:59:46Z")

</div>

---

## [Set ColorNode at Colors Module](https://discourse.slicer.org/t/set-colornode-at-colors-module/12772)

<div class="topic-metadata">

**Author:** [@siaeleni](https://discourse.slicer.org/u/siaeleni)\
**Replies:** 0\
**Last updated:** [July 29, 2020, 6:05pm UTC](https://discourse.slicer.org/t/set-colornode-at-colors-module/12772 "2020-07-29T18:05:09Z")

</div>

Hi, I want to set a color Node programmatically that I have created to the Colors Module in order to display it. I have created a node like this, but I am not sure how to set it to the Colors module. colorNode = slic…

---

## [Interpolated cropping slicghtly changes voxel values](https://discourse.slicer.org/t/interpolated-cropping-slicghtly-changes-voxel-values/12763)

<div class="topic-metadata">

**Author:** [@manjula](https://discourse.slicer.org/u/manjula)\
**Replies:** 1\
**Last updated:** [July 28, 2020, 9:28pm UTC](https://discourse.slicer.org/t/interpolated-cropping-slicghtly-changes-voxel-values/12763 "2020-07-28T21:28:33Z")

</div>

I am getting very minor difference in voxel values when I crop with the ROI box. I used the crop volume with Linear interpolator and isotropic spacing and default settings. When I calculate the mean value in segment …

---

## [ROI to Segmentation or Model?](https://discourse.slicer.org/t/roi-to-segmentation-or-model/12570)

<div class="topic-metadata">

**Author:** [@manjula](https://discourse.slicer.org/u/manjula)\
**Replies:** 4\
**Last updated:** [July 16, 2020, 10:23pm UTC](https://discourse.slicer.org/t/roi-to-segmentation-or-model/12570 "2020-07-16T22:23:20Z")

</div>

Hi, Is there a way to convert a ROI box in to a segment or Model ? I tried to create a vtkModel object with the centroid of the segment as the center but its orientation is not what i want. I was simply thinking is th…

---

## [Ukf tractography](https://discourse.slicer.org/t/ukf-tractography/2747)

<div class="topic-metadata">

**Author:** [@Jin](https://discourse.slicer.org/u/Jin)\
**Replies:** 7\
**Last updated:** [July 28, 2020, 1:19pm UTC](https://discourse.slicer.org/t/ukf-tractography/2747 "2020-07-28T13:19:00Z")

</div>

Operating system:windows 10 Slicer version:4.8.0 Expected behavior: DTI Process Actual behavior: Standard error The current UKF Tractography is different from the tutorial(4.4)

---

## [Can not access Extension Manager](https://discourse.slicer.org/t/can-not-access-extension-manager/12754)

<div class="topic-metadata">

**Author:** [@11140](https://discourse.slicer.org/u/11140)\
**Replies:** 0\
**Last updated:** [July 28, 2020, 4:03am UTC](https://discourse.slicer.org/t/can-not-access-extension-manager/12754 "2020-07-28T04:03:41Z")

</div>

Dear Sir, I want to access Extension Manager to install some extension, however, an error happens: Operating system: Mac High Seria 10.13.6 Slicer version: Slicer-4.11.0-2020-07-20-macosx-amd64 Expected behavior: acce…

---

## [How to import a labelmap directly for model generation?](https://discourse.slicer.org/t/how-to-import-a-labelmap-directly-for-model-generation/12747)

<div class="topic-metadata">

**Author:** [@KKad](https://discourse.slicer.org/u/KKad)\
**Replies:** 5\
**Last updated:** [July 28, 2020, 12:06am UTC](https://discourse.slicer.org/t/how-to-import-a-labelmap-directly-for-model-generation/12747 "2020-07-28T00:06:30Z")

</div>

Hello Slicer Community! I’m a very new user, I’m interested in using the Model Maker module to generate a 3D mesh for a biomechanical finite element analysis. I have 5 materials and around 100 3D parts and they’re supp…

---

## [How to use a python package in an extension?](https://discourse.slicer.org/t/how-to-use-a-python-package-in-an-extension/12736)

<div class="topic-metadata">

**Author:** [@nathanhillyer](https://discourse.slicer.org/u/nathanhillyer)\
**Replies:** 2\
**Last updated:** [July 27, 2020, 11:48pm UTC](https://discourse.slicer.org/t/how-to-use-a-python-package-in-an-extension/12736 "2020-07-27T23:48:19Z")

</div>

How do I import my python pip package into an extension, for example: Notice this extension is able to import a method from the radiomics library. How do I accomplish the same with my pip module on PyPi?

---

## [Load dicom binary mask as segmentation onto dicom images](https://discourse.slicer.org/t/load-dicom-binary-mask-as-segmentation-onto-dicom-images/12750)

<div class="topic-metadata">

**Author:** [@Nick555](https://discourse.slicer.org/u/Nick555)\
**Replies:** 3\
**Last updated:** [July 27, 2020, 8:38pm UTC](https://discourse.slicer.org/t/load-dicom-binary-mask-as-segmentation-onto-dicom-images/12750 "2020-07-27T20:38:29Z")

</div>

I have a dicom CT series, and a binary mask series (with same number of slices as dicom series), with only the tumors having a value of 1 in the mask. So if the tumor is on slice 10, then only those pixels on slice 10 wi…

---

## [Questions about importing labelmap directly to produce 3D model](https://discourse.slicer.org/t/questions-about-importing-labelmap-directly-to-produce-3d-model/12745)

<div class="topic-metadata">

**Author:** [@KKad](https://discourse.slicer.org/u/KKad)\
**Replies:** 1\
**Last updated:** [July 27, 2020, 1:31pm UTC](https://discourse.slicer.org/t/questions-about-importing-labelmap-directly-to-produce-3d-model/12745 "2020-07-27T13:31:45Z")

</div>

Hello Slicer Community! Very new user here, I have some annotated volumetric data (in the form of one 2D array per slice) where each pixel is labelled with a material and a volume index. The format is currently stored o…

---

## [Why does my XA type image appear as a series and not a single 2D image?](https://discourse.slicer.org/t/why-does-my-xa-type-image-appear-as-a-series-and-not-a-single-2d-image/12711)

<div class="topic-metadata">

**Author:** [@Henry\_Cope](https://discourse.slicer.org/u/Henry_Cope)\
**Replies:** 7\
**Last updated:** [July 25, 2020, 4:02am UTC](https://discourse.slicer.org/t/why-does-my-xa-type-image-appear-as-a-series-and-not-a-single-2d-image/12711 "2020-07-25T04:02:42Z")

</div>

Hello All, I’m trying to view an xray angiography, but i can only see/load it as a series of DICOMs that look like this: What’s more is that these slices don’t appear as I would expect them to for an X-ray image, as …

---

## [New decimation methods added: quadric and fast quadric](https://discourse.slicer.org/t/new-decimation-methods-added-quadric-and-fast-quadric/12729)

<div class="topic-metadata">

**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 0\
**Last updated:** [July 25, 2020, 3:43am UTC](https://discourse.slicer.org/t/new-decimation-methods-added-quadric-and-fast-quadric/12729 "2020-07-25T03:43:10Z")

</div>

Recently new surface simplification (reduction of ) methods were added to Decimation module in Slicer. Quadric and its approximate but faster version, FastQuadric methods provide much higher quality meshes than the previ…

---

## [Having trouble understanding model types](https://discourse.slicer.org/t/having-trouble-understanding-model-types/12726)

<div class="topic-metadata">

**Author:** [@Ugi\_Mikla](https://discourse.slicer.org/u/Ugi_Mikla)\
**Replies:** 3\
**Last updated:** [July 25, 2020, 12:21am UTC](https://discourse.slicer.org/t/having-trouble-understanding-model-types/12726 "2020-07-25T00:21:24Z")

</div>

Hi there! I’m new at this software- Trying to learn to segment and create models for dental research purpose. I will really appreciate if someone could help me understand the difference between the surface model and th…

---

## [Scriptablemodule error](https://discourse.slicer.org/t/scriptablemodule-error/12676)

<div class="topic-metadata">

**Author:** [@Anand\_Mulay](https://discourse.slicer.org/u/Anand_Mulay)\
**Replies:** 2\
**Last updated:** [July 24, 2020, 2:25pm UTC](https://discourse.slicer.org/t/scriptablemodule-error/12676 "2020-07-24T14:25:33Z")

</div>

suddenly i’m getting this error - Generic Warning: In D:\\D\\S\\Slicer-4102\\Base\\Logic\\vtkSlicerApplicationLogic.cxx, line 866 Failed to compute module home directory given filePath it was working all okay before.

---

## [PET/CT "Could not load: ... as a Scalar Volume"](https://discourse.slicer.org/t/pet-ct-could-not-load-as-a-scalar-volume/12660)

<div class="topic-metadata">

**Author:** [@jcaruso884](https://discourse.slicer.org/u/jcaruso884)\
**Replies:** 4\
**Last updated:** [July 24, 2020, 12:56pm UTC](https://discourse.slicer.org/t/pet-ct-could-not-load-as-a-scalar-volume/12660 "2020-07-24T12:56:00Z")

</div>

I’m having problems loading my PET/CT data. Any ideas on how to fix this issue? Any tips are appreciated! https://drive.google.com/drive/folders/1T0mYrI5O0IVnnwpj6UTGUMtb1XlR3obs?usp=sharing Operating system: macOS Hig…

[Previous page](https://discourse.slicer.org/c/support/11.md?page=327)

[Next page](https://discourse.slicer.org/c/support/11.md?page=329)