# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=242

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

**Page:** 243

---

## [Suggestion for an extension to measure parameters (Like angle in 2d plane, drawing straight and curved line) or is there any other DICOM viewer like slicer with these features available for windows](https://discourse.slicer.org/t/suggestion-for-an-extension-to-measure-parameters-like-angle-in-2d-plane-drawing-straight-and-curved-line-or-is-there-any-other-dicom-viewer-like-slicer-with-these-features-available-for-windows/21558)

<div class="topic-metadata">

**Author:** [@akil.prabhakar](https://discourse.slicer.org/u/akil.prabhakar)\
**Replies:** 1\
**Last updated:** [January 21, 2022, 8:27pm UTC](https://discourse.slicer.org/t/suggestion-for-an-extension-to-measure-parameters-like-angle-in-2d-plane-drawing-straight-and-curved-line-or-is-there-any-other-dicom-viewer-like-slicer-with-these-features-available-for-windows/21558 "2022-01-21T20:27:20Z")

</div>

Im trying to measure a 3D CT based parameters. Most of the simple task I am able to do with MarkUps. But, some task like drawing a perfect circle is not possible. I have already asked for help. But because of my poor kno…

---

## [How to convert a vtkMRMLScalarVolumeNode to a vtkMRMLSegmentationNode](https://discourse.slicer.org/t/how-to-convert-a-vtkmrmlscalarvolumenode-to-a-vtkmrmlsegmentationnode/20343)

<div class="topic-metadata">

**Author:** [@kkkkkkk123](https://discourse.slicer.org/u/kkkkkkk123)\
**Replies:** 7\
**Last updated:** [January 21, 2022, 8:06pm UTC](https://discourse.slicer.org/t/how-to-convert-a-vtkmrmlscalarvolumenode-to-a-vtkmrmlsegmentationnode/20343 "2022-01-21T20:06:04Z")

</div>

Hi all, I’m trying to convert a vtkMRMLScalarVolumeNode to a new vtkMRMLSegmentationNode (in Python) and I don’t seem to get it figured out… The scalar volume is basically just a binary image but I want it to be rendere…

---

## [Unable to exceed incumbent 'maximum' in Volume Rendering module by text entry](https://discourse.slicer.org/t/unable-to-exceed-incumbent-maximum-in-volume-rendering-module-by-text-entry/21535)

<div class="topic-metadata">

**Author:** [@DIV](https://discourse.slicer.org/u/DIV)\
**Replies:** 2\
**Last updated:** [January 21, 2022, 6:39pm UTC](https://discourse.slicer.org/t/unable-to-exceed-incumbent-maximum-in-volume-rendering-module-by-text-entry/21535 "2022-01-21T18:39:10Z")

</div>

In the Volume Rendering module under Advanced there are settings for Scalar Opacity Mapping and Scalar Color Mapping. If the largest preset X value in the series of points in either set is smaller than the maximum im…

---

## [Anyone know how to calculated the lesion on CT corresponding on SPECT images?](https://discourse.slicer.org/t/anyone-know-how-to-calculated-the-lesion-on-ct-corresponding-on-spect-images/21562)

<div class="topic-metadata">

**Author:** [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Replies:** 1\
**Last updated:** [January 21, 2022, 5:58pm UTC](https://discourse.slicer.org/t/anyone-know-how-to-calculated-the-lesion-on-ct-corresponding-on-spect-images/21562 "2022-01-21T17:58:54Z")

</div>

Hi All, I have SPECT image with lesion 1 and lesion 2. (as attached picture) I also have CT from the PET machine that also have the same lesion 1 and lesion 2. (as attached picture) My problem is how to calculate the l…

---

## [Odd 'flickering' (unstable display) in table: possible scrollbar issue](https://discourse.slicer.org/t/odd-flickering-unstable-display-in-table-possible-scrollbar-issue/21555)

<div class="topic-metadata">

**Author:** [@DIV](https://discourse.slicer.org/u/DIV)\
**Replies:** 1\
**Last updated:** [January 21, 2022, 5:45am UTC](https://discourse.slicer.org/t/odd-flickering-unstable-display-in-table-possible-scrollbar-issue/21555 "2022-01-21T05:45:30Z")

</div>

Using the latest Preview version of 3D Slicer (4.13.0 2022-01-19) in the Segment Editor I encountered some weird behaviour in the table of segments. I had eight (8) segments defined, and I clicked the Threshold tool and…

---

## [Problem Saving my segments](https://discourse.slicer.org/t/problem-saving-my-segments/21545)

<div class="topic-metadata">

**Author:** [@drshyam](https://discourse.slicer.org/u/drshyam)\
**Replies:** 1\
**Last updated:** [January 20, 2022, 3:55pm UTC](https://discourse.slicer.org/t/problem-saving-my-segments/21545 "2022-01-20T15:55:39Z")

</div>

Respected sir, while saving the segments of DICOM file , i do not see the option for SLT, OBJ format. please help me to export segment in STL format Regards Dr. Shyam

---

## [Slicer.org and Slicer GitHub organization are now verified](https://discourse.slicer.org/t/slicer-org-and-slicer-github-organization-are-now-verified/21550)

<div class="topic-metadata">

**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 0\
**Last updated:** [January 20, 2022, 3:45pm UTC](https://discourse.slicer.org/t/slicer-org-and-slicer-github-organization-are-now-verified/21550 "2022-01-20T15:45:59Z")

</div>

Thanks to help from @mhalle our slicer.org domain is now verified on the Slicer GitHub Organization! :tada: To learn more about this, see Verifying or approving a domain for your organization - GitHub Docs

---

## [\[Scalar Volume Display Widget\] Blue line missing in histogram](https://discourse.slicer.org/t/scalar-volume-display-widget-blue-line-missing-in-histogram/21518)

<div class="topic-metadata">

**Author:** [@strider\_hunter](https://discourse.slicer.org/u/strider_hunter)\
**Replies:** 2\
**Last updated:** [January 20, 2022, 9:31am UTC](https://discourse.slicer.org/t/scalar-volume-display-widget-blue-line-missing-in-histogram/21518 "2022-01-20T09:31:26Z")

</div>

Hi, I have a ScalarVolume which has values in the range of \[0,0.5\]. When I view the histogram of this ScalarVolume, I am unable to understand it due to the missing blue line. I have another ScalarVolume (a CT scan)…

---

## [OBB script error](https://discourse.slicer.org/t/obb-script-error/21533)

<div class="topic-metadata">

**Author:** [@matsuba8](https://discourse.slicer.org/u/matsuba8)\
**Replies:** 0\
**Last updated:** [January 19, 2022, 10:43pm UTC](https://discourse.slicer.org/t/obb-script-error/21533 "2022-01-19T22:43:21Z")

</div>

Hello, I’ve been trying to get the oriented bounding boxes (OBBs) for my segmentations, and have been trying to use the script found on this page (Script repository — 3D Slicer documentation) under “Markups ROI” of “Get…

---

## [Segmentation of CT Dicoms](https://discourse.slicer.org/t/segmentation-of-ct-dicoms/21527)

<div class="topic-metadata">

**Author:** [@3Dslicerhelp](https://discourse.slicer.org/u/3Dslicerhelp)\
**Replies:** 1\
**Last updated:** [January 19, 2022, 7:59pm UTC](https://discourse.slicer.org/t/segmentation-of-ct-dicoms/21527 "2022-01-19T19:59:58Z")

</div>

I uploaded a CT dicom image set into Slicer and segmented a region of interest. Now, I would like to save both my input volume and segmentation into a single file (preferably .nrrd). Is there a way I am able to do this? …

---

## [MRI requirements for 3D modeling](https://discourse.slicer.org/t/mri-requirements-for-3d-modeling/11859)

<div class="topic-metadata">

**Author:** [@Ricardo](https://discourse.slicer.org/u/Ricardo)\
**Replies:** 7\
**Last updated:** [January 19, 2022, 5:14pm UTC](https://discourse.slicer.org/t/mri-requirements-for-3d-modeling/11859 "2022-01-19T17:14:37Z")

</div>

Hello everybody, hope someone can help me with this one: If I wanted to ask for a MRI similar to a TC scan with the following settings: Matrix: 512 x 512;\* Radiation: 120kV, mAs as given by automatic system;\* Slice Th…

---

## [High Doppler imaging segmentation ](https://discourse.slicer.org/t/high-doppler-imaging-segmentation/21520)

<div class="topic-metadata">

**Author:** [@Effand](https://discourse.slicer.org/u/Effand)\
**Replies:** 1\
**Last updated:** [January 19, 2022, 3:05am UTC](https://discourse.slicer.org/t/high-doppler-imaging-segmentation/21520 "2022-01-19T03:05:48Z")

</div>

Hey All, I would like to kindly ask you all for some support for vessel segmentation on ultrasound images. I am a Medical researcher in radiology, currently working on Micro- Doppler ultrasound images which is a novel mo…

---

## [Saving frames separately when using MultiVolume](https://discourse.slicer.org/t/saving-frames-separately-when-using-multivolume/21514)

<div class="topic-metadata">

**Author:** [@Mark\_Brahier](https://discourse.slicer.org/u/Mark_Brahier)\
**Replies:** 2\
**Last updated:** [January 19, 2022, 2:41am UTC](https://discourse.slicer.org/t/saving-frames-separately-when-using-multivolume/21514 "2022-01-19T02:41:03Z")

</div>

Hello, is there a way to easily download frames separately when using MultiVolume? I am using retrospectively gated CTs with about 20 frames (one at each 5% of the cardiac cycle). I would like to download as 20 separate …

---

## [Smoothing causes offset of portion of copied segment](https://discourse.slicer.org/t/smoothing-causes-offset-of-portion-of-copied-segment/21340)

<div class="topic-metadata">

**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 10\
**Last updated:** [January 19, 2022, 12:46am UTC](https://discourse.slicer.org/t/smoothing-causes-offset-of-portion-of-copied-segment/21340 "2022-01-19T00:46:07Z")

</div>

I have a large segment (whole body) and I want to make a copy of this and delete everything but the head. This all works fine, except when I view the head segment and the body segment in the 3D view with smoothing turned…

---

## [Changes applied in a python script propagate only to the GUI but don't get displayed](https://discourse.slicer.org/t/changes-applied-in-a-python-script-propagate-only-to-the-gui-but-dont-get-displayed/21519)

<div class="topic-metadata">

**Author:** [@koeglfryderyk](https://discourse.slicer.org/u/koeglfryderyk)\
**Replies:** 2\
**Last updated:** [January 18, 2022, 9:09pm UTC](https://discourse.slicer.org/t/changes-applied-in-a-python-script-propagate-only-to-the-gui-but-dont-get-displayed/21519 "2022-01-18T21:09:04Z")

</div>

I’m trying to write a script that applies a color gradient to a markups curve. All the changes are visible in the GUI, but the displayed curve does not change. To change the curve I have to manually click on something i…

---

## [Computationally intensive tasks: delay invocation; allow user to abort](https://discourse.slicer.org/t/computationally-intensive-tasks-delay-invocation-allow-user-to-abort/20991)

<div class="topic-metadata">

**Author:** [@DIV](https://discourse.slicer.org/u/DIV)\
**Replies:** 5\
**Last updated:** [January 18, 2022, 2:15pm UTC](https://discourse.slicer.org/t/computationally-intensive-tasks-delay-invocation-allow-user-to-abort/20991 "2022-01-18T14:15:54Z")

</div>

Some tasks in Slicer are computationally intensive; an example could be running the Grow from seeds effect in the Segment Editor module. Accidentally invoking a computationally intensive task When dragging the Seed lo…

---

## [Texture analysis Cardiac MRI](https://discourse.slicer.org/t/texture-analysis-cardiac-mri/11074)

<div class="topic-metadata">

**Author:** [@sarvpriya1985](https://discourse.slicer.org/u/sarvpriya1985)\
**Replies:** 8\
**Last updated:** [January 18, 2022, 12:46pm UTC](https://discourse.slicer.org/t/texture-analysis-cardiac-mri/11074 "2022-01-18T12:46:34Z")

</div>

Hi all, I am looking to extract texture features using radiomics extension for cardiac mri images. For this I would segment LV myocardium (single slice) and run texture features on that. I am looking to resample the im…

---

## [Anisotropic voxel](https://discourse.slicer.org/t/anisotropic-voxel/21127)

<div class="topic-metadata">

**Author:** [@Valentina\_Nepi](https://discourse.slicer.org/u/Valentina_Nepi)\
**Replies:** 9\
**Last updated:** [January 18, 2022, 12:35pm UTC](https://discourse.slicer.org/t/anisotropic-voxel/21127 "2022-01-18T12:35:47Z")

</div>

Hi everyone. I am studying a MRI dataset. All the images have the same spacing (0,80x0,46x0,46) cause everything is reported in FLAIR space. Also a given ground truth segmentation for lesions has this spacing condition. …

---

## [Lung CT segmenter](https://discourse.slicer.org/t/lung-ct-segmenter/21493)

<div class="topic-metadata">

**Author:** [@opetne](https://discourse.slicer.org/u/opetne)\
**Replies:** 8\
**Last updated:** [January 18, 2022, 9:23am UTC](https://discourse.slicer.org/t/lung-ct-segmenter/21493 "2022-01-18T09:23:32Z")

</div>

Operation system: Windows 10 Slcier version: 4.11 20210226 I tried to run the Lung CT segmenter module on a dog CT series. Preview was ok but after applying I got this error message: Saving fiducials in root director…

---

## [Cropped volume to inherit display preferences](https://discourse.slicer.org/t/cropped-volume-to-inherit-display-preferences/20859)

<div class="topic-metadata">

**Author:** [@DIV](https://discourse.slicer.org/u/DIV)\
**Replies:** 5\
**Last updated:** [January 18, 2022, 6:22am UTC](https://discourse.slicer.org/t/cropped-volume-to-inherit-display-preferences/20859 "2022-01-18T06:22:58Z")

</div>

In the Crop Volume module a user can create a new volume by cropping an existing volume. Where the existing volume has a display Preset configured for 3D rendering in the Volume Rendering module and/or display settings …

---

## [Making keyboard shortcuts to open modules](https://discourse.slicer.org/t/making-keyboard-shortcuts-to-open-modules/21375)

<div class="topic-metadata">

**Author:** [@hourglassnam](https://discourse.slicer.org/u/hourglassnam)\
**Replies:** 6\
**Last updated:** [January 18, 2022, 5:30am UTC](https://discourse.slicer.org/t/making-keyboard-shortcuts-to-open-modules/21375 "2022-01-18T05:30:10Z")

</div>

Hi everyone! I have been writing a python script that allows opening specific modules using keyboard shortcuts. However, the script does not work quite right. Below is what I could put together based on the forum topi…

---

## [PET Volume statistics](https://discourse.slicer.org/t/pet-volume-statistics/21495)

<div class="topic-metadata">

**Author:** [@MPhilip](https://discourse.slicer.org/u/MPhilip)\
**Replies:** 0\
**Last updated:** [January 17, 2022, 4:15pm UTC](https://discourse.slicer.org/t/pet-volume-statistics/21495 "2022-01-17T16:15:23Z")

</div>

Operating system: Windows 10 enterprise Slicer version:Slicer 4.13.0-2021-12-15 Hi I am using ‘segment statistics’ to calculate PET volume parameters. PET volume statistics like SUVmax, SUVmin, SUVpeak appears as bel…

---

## [Segment statistics-PET volume statistics](https://discourse.slicer.org/t/segment-statistics-pet-volume-statistics/21252)

<div class="topic-metadata">

**Author:** [@MPhilip](https://discourse.slicer.org/u/MPhilip)\
**Replies:** 0\
**Last updated:** [December 28, 2021, 4:51pm UTC](https://discourse.slicer.org/t/segment-statistics-pet-volume-statistics/21252 "2021-12-28T16:51:13Z")

</div>

Operating system: Windows 11 home Slicer version:4.13.0-2021-12-22 I would like to calculate 42% SUVmax of the given segmented region. But from segment statistics module, I am unable to calculate the PET volume statist…

---

## [What patient data is required in DICOM header to load you data with "Load DICOM Data"?](https://discourse.slicer.org/t/what-patient-data-is-required-in-dicom-header-to-load-you-data-with-load-dicom-data/21490)

<div class="topic-metadata">

**Author:** [@Luna](https://discourse.slicer.org/u/Luna)\
**Replies:** 1\
**Last updated:** [January 17, 2022, 3:05pm UTC](https://discourse.slicer.org/t/what-patient-data-is-required-in-dicom-header-to-load-you-data-with-load-dicom-data/21490 "2022-01-17T15:05:57Z")

</div>

I am currently creating a DICOM file of images without a SOP class. If I would load my dicom file slicer would say that some patient data is missing. Which attributes should I add to load it?

---

## [Creating a new segment from an open surface](https://discourse.slicer.org/t/creating-a-new-segment-from-an-open-surface/21450)

<div class="topic-metadata">

**Author:** [@perecanals](https://discourse.slicer.org/u/perecanals)\
**Replies:** 6\
**Last updated:** [January 17, 2022, 1:52pm UTC](https://discourse.slicer.org/t/creating-a-new-segment-from-an-open-surface/21450 "2022-01-17T13:52:27Z")

</div>

Hi, I am trying to get a new segment from a part of a (closed) surface model (obtained from a segment in the Segment Editor) via Python scripting. I am working with a large closed surface, onto which I identify a part o…

---

## [Model visualization](https://discourse.slicer.org/t/model-visualization/21469)

<div class="topic-metadata">

**Author:** [@Luca](https://discourse.slicer.org/u/Luca)\
**Replies:** 1\
**Last updated:** [January 16, 2022, 9:28pm UTC](https://discourse.slicer.org/t/model-visualization/21469 "2022-01-16T21:28:59Z")

</div>

Dear community, I imported a model by python scripting with the following lines: inputModel = slicer.util.loadModel(model\_path) inputModel.SetDisplayVisibility(1) inputModel.GetDisplayNode().SetOpacity(0.25) inputMo…

---

## [Can VMTK directly import STK file?](https://discourse.slicer.org/t/can-vmtk-directly-import-stk-file/21487)

<div class="topic-metadata">

**Author:** [@xiuyuanc](https://discourse.slicer.org/u/xiuyuanc)\
**Replies:** 0\
**Last updated:** [January 16, 2022, 8:59pm UTC](https://discourse.slicer.org/t/can-vmtk-directly-import-stk-file/21487 "2022-01-16T20:59:59Z")

</div>

Hi all, I’m trying to carry out an artery annotation task, to segment and annotate each artery name of an artery tree and hope to use the ‘vmtkbranchextractor’ command. However, my data all came in STL format, I’m wonde…

---

## [Is it possible to segment image data in the view of volume rendering?](https://discourse.slicer.org/t/is-it-possible-to-segment-image-data-in-the-view-of-volume-rendering/19165)

<div class="topic-metadata">

**Author:** [@WilliamDaniel](https://discourse.slicer.org/u/WilliamDaniel)\
**Replies:** 6\
**Last updated:** [January 15, 2022, 1:17pm UTC](https://discourse.slicer.org/t/is-it-possible-to-segment-image-data-in-the-view-of-volume-rendering/19165 "2022-01-15T13:17:54Z")

</div>

Hello, I am new to 3D Slicer, and currently, I am learning how to develop a new module in 3D Slicer to implement new features. The basic idea of the module I am going to achieve is: To enable users to specify and extr…

---

## [Registration and rendering](https://discourse.slicer.org/t/registration-and-rendering/21402)

<div class="topic-metadata">

**Author:** [@sandigeeup](https://discourse.slicer.org/u/sandigeeup)\
**Replies:** 10\
**Last updated:** [January 15, 2022, 11:37am UTC](https://discourse.slicer.org/t/registration-and-rendering/21402 "2022-01-15T11:37:08Z")

</div>

Data registration do I do the direct rendering and segmentations of MRI, CT and PET scans, prior to registration or after?

---

## [Problem saving with .nrrd format](https://discourse.slicer.org/t/problem-saving-with-nrrd-format/21462)

<div class="topic-metadata">

**Author:** [@Francesca\_Lo\_Iacono](https://discourse.slicer.org/u/Francesca_Lo_Iacono)\
**Replies:** 3\
**Last updated:** [January 14, 2022, 5:30pm UTC](https://discourse.slicer.org/t/problem-saving-with-nrrd-format/21462 "2022-01-14T17:30:14Z")

</div>

Hi guys! I have a problem. I’m segmenting left ventricle in two parts: left ventricle wall and left ventricle cavity. As output I need an .nrrd format. The problem is that saving the segmentation as “.nrrd” format and d…

[Previous page](https://discourse.slicer.org/c/support/11.md?page=241)

[Next page](https://discourse.slicer.org/c/support/11.md?page=243)