# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=167

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

**Page:** 168

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## [Total radioactivity within VOI](https://discourse.slicer.org/t/total-radioactivity-within-voi/24953)

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**Author:** [@samcyc](https://discourse.slicer.org/u/samcyc)\
**Replies:** 1\
**Last updated:** [April 20, 2023, 6:25am UTC](https://discourse.slicer.org/t/total-radioactivity-within-voi/24953 "2023-04-20T06:25:46Z")

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Hello all, I come to you for a question which I can’t find the answer on the forum or on internet. I want to know the total radioactivity within a volume of interest. All quantitative tools I found for 3D slicer (PET-I…

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## [Printing dicom files](https://discourse.slicer.org/t/printing-dicom-files/28942)

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**Author:** [@mmasoudsf](https://discourse.slicer.org/u/mmasoudsf)\
**Replies:** 8\
**Last updated:** [April 20, 2023, 4:12am UTC](https://discourse.slicer.org/t/printing-dicom-files/28942 "2023-04-20T04:12:19Z")

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I think printing dicom files on radiology films and normal paper would be a big advantageous for Slicer3D.

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## [Wrap Solidify error "mesh empty"](https://discourse.slicer.org/t/wrap-solidify-error-mesh-empty/28383)

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**Author:** [@PixelTreason](https://discourse.slicer.org/u/PixelTreason)\
**Replies:** 5\
**Last updated:** [April 20, 2023, 3:56am UTC](https://discourse.slicer.org/t/wrap-solidify-error-mesh-empty/28383 "2023-04-20T03:56:53Z")

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Hi, I am back again already, sorry! I am trying to use wrap solidify to strip the skull of a CT and I am getting this error: “Wrap Solidify failed. Mesh has become empty during shrink-wrap iterations.” I saw a post on…

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## [Segmentation is very pixelated.](https://discourse.slicer.org/t/segmentation-is-very-pixelated/29019)

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**Author:** [@Muggs](https://discourse.slicer.org/u/Muggs)\
**Replies:** 1\
**Last updated:** [April 20, 2023, 3:54am UTC](https://discourse.slicer.org/t/segmentation-is-very-pixelated/29019 "2023-04-20T03:54:41Z")

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Hello All, VERY new to this. My segments are really pixelated, like LEGO’s. Anyway to reduce the palatalization when creating segments for STL export? Muggs

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## [Threshold segmentation of intracranial hemorrhage foci](https://discourse.slicer.org/t/threshold-segmentation-of-intracranial-hemorrhage-foci/29017)

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**Author:** [@duan](https://discourse.slicer.org/u/duan)\
**Replies:** 1\
**Last updated:** [April 20, 2023, 3:41am UTC](https://discourse.slicer.org/t/threshold-segmentation-of-intracranial-hemorrhage-foci/29017 "2023-04-20T03:41:06Z")

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Excuse me,May I confirm that the threshold for segmenting intracranial hemorrhage lesions using threshold segmentation in the segment editor is 40-100?

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## [Information about LungCTSegmenter](https://discourse.slicer.org/t/information-about-lungctsegmenter/28976)

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**Author:** [@paolo](https://discourse.slicer.org/u/paolo)\
**Replies:** 6\
**Last updated:** [April 19, 2023, 6:43pm UTC](https://discourse.slicer.org/t/information-about-lungctsegmenter/28976 "2023-04-19T18:43:53Z")

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Hi everyone, I’m a biomedical engineering student from Italy, this is the first time I’m using 3D Slicer. I’m writing to ask you some information about the Lung CT Analyzer and Lung CT Segmenter extensions in 3D Slicer…

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## [Slicer VR and Meta Oculus Quest 2](https://discourse.slicer.org/t/slicer-vr-and-meta-oculus-quest-2/29009)

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**Author:** [@MooreJer](https://discourse.slicer.org/u/MooreJer)\
**Replies:** 0\
**Last updated:** [April 19, 2023, 5:28pm UTC](https://discourse.slicer.org/t/slicer-vr-and-meta-oculus-quest-2/29009 "2023-04-19T17:28:03Z")

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Hello, I am currently trying to visualize 3D Echo data in Slicer VR using an Meta (Oculus) Quest 2. I am able to connect my VR to to SlicerVR by using the SteamVR software. I run into an issue when I try to view the sce…

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## [Where is HU at Segment Statistics module?](https://discourse.slicer.org/t/where-is-hu-at-segment-statistics-module/28861)

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**Author:** [@Igor1023](https://discourse.slicer.org/u/Igor1023)\
**Replies:** 22\
**Last updated:** [April 19, 2023, 5:03pm UTC](https://discourse.slicer.org/t/where-is-hu-at-segment-statistics-module/28861 "2023-04-19T17:03:17Z")

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Hy everyone. Im a student of Sechenov Medical University. Now im trying to manage with 3D Slicer and i want to know, where can i find Haunsfield Units here. Thank you.

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## [Convert VTK file to NIFTI or DICOM](https://discourse.slicer.org/t/convert-vtk-file-to-nifti-or-dicom/2330)

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**Author:** [@Kirk\_Geier](https://discourse.slicer.org/u/Kirk_Geier)\
**Replies:** 8\
**Last updated:** [April 19, 2023, 4:27pm UTC](https://discourse.slicer.org/t/convert-vtk-file-to-nifti-or-dicom/2330 "2023-04-19T16:27:08Z")

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HI! I have the same issue (trying to convert VTK files to NIFTI or DICOM). However the solution here doesn’t seem to work for me as I’m loading in a VTK file someone else made. Any solutions to how to convert these fil…

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## [Exporting Volume Model and HU for FEA (issue with vtk export)](https://discourse.slicer.org/t/exporting-volume-model-and-hu-for-fea-issue-with-vtk-export/28865)

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**Author:** [@evaherbst](https://discourse.slicer.org/u/evaherbst)\
**Replies:** 3\
**Last updated:** [April 19, 2023, 3:08pm UTC](https://discourse.slicer.org/t/exporting-volume-model-and-hu-for-fea-issue-with-vtk-export/28865 "2023-04-19T15:08:04Z")

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Hi all, I want to export a volumetric model along with HU values for FEA analysis. Based on several very helpful forum posts, I was able to create a volumetric mesh (single material) with the SegmentMesher module. I th…

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## [Patient's breathing solutions](https://discourse.slicer.org/t/patients-breathing-solutions/28939)

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**Author:** [@jay1987](https://discourse.slicer.org/u/jay1987)\
**Replies:** 8\
**Last updated:** [April 19, 2023, 1:58am UTC](https://discourse.slicer.org/t/patients-breathing-solutions/28939 "2023-04-19T01:58:14Z")

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Due to the patient’s breathing, it is difficult for the target in the chest to stay at the same position in space. Therefore, it is difficult to accurately locate the target whether it is radiotherapy or ultrasound focus…

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## [Warping transform from fiducial registration doesnt work with volumes](https://discourse.slicer.org/t/warping-transform-from-fiducial-registration-doesnt-work-with-volumes/28978)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 4\
**Last updated:** [April 18, 2023, 8:53pm UTC](https://discourse.slicer.org/t/warping-transform-from-fiducial-registration-doesnt-work-with-volumes/28978 "2023-04-18T20:53:31Z")

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I have created a warping transfrom from two landmark sets. The resultant transform can be successfully applied to a 3D model (see the screenshot, green model is under the resultant transform, and has a slight deformation…

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## [.nrrd file cannot be reopened after saving it](https://discourse.slicer.org/t/nrrd-file-cannot-be-reopened-after-saving-it/28943)

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**Author:** [@Joshua\_Binswanger](https://discourse.slicer.org/u/Joshua_Binswanger)\
**Replies:** 7\
**Last updated:** [April 18, 2023, 3:57pm UTC](https://discourse.slicer.org/t/nrrd-file-cannot-be-reopened-after-saving-it/28943 "2023-04-18T15:57:25Z")

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Hey Slicer People, First off: Super powerful and fun to use software! really appreciate all you created and did! Hard to belive all this is free :slight\_smile: Anyways, I stumbled upon a problem which baffles me a bit.…

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## [Slicer as a python library / web based application?](https://discourse.slicer.org/t/slicer-as-a-python-library-web-based-application/28674)

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**Author:** [@NaglisR](https://discourse.slicer.org/u/NaglisR)\
**Replies:** 11\
**Last updated:** [April 18, 2023, 2:29pm UTC](https://discourse.slicer.org/t/slicer-as-a-python-library-web-based-application/28674 "2023-04-18T14:29:47Z")

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Hello, I want to ask if there are any plans at any point to create Slicer as a full python package or a web based application, which would not require/reference a separate slicer executable application. Currently to my…

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## [Voxel size 0.5856x0.5856x1.0mm means that resampledPixelSpacing should be: \[0.5856, 0.5856, 0.5856\]?](https://discourse.slicer.org/t/voxel-size-0-5856x0-5856x1-0mm-means-that-resampledpixelspacing-should-be-0-5856-0-5856-0-5856/28984)

<div class="topic-metadata">

**Author:** [@harad](https://discourse.slicer.org/u/harad)\
**Replies:** 0\
**Last updated:** [April 18, 2023, 1:54pm UTC](https://discourse.slicer.org/t/voxel-size-0-5856x0-5856x1-0mm-means-that-resampledpixelspacing-should-be-0-5856-0-5856-0-5856/28984 "2023-04-18T13:54:25Z")

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Hi All, Would appreciate quick feedback on this: if the voxel size that can be seen in the VOLUMES module is 0.5856x0.5856x1.0mm, does that mean that the PARAMS file for Slicer Radiomics should be set to resampledPixelSp…

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## [Splittng multiframe/volume DICOM](https://discourse.slicer.org/t/splittng-multiframe-volume-dicom/28966)

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**Author:** [@William](https://discourse.slicer.org/u/William)\
**Replies:** 5\
**Last updated:** [April 18, 2023, 10:10am UTC](https://discourse.slicer.org/t/splittng-multiframe-volume-dicom/28966 "2023-04-18T10:10:36Z")

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Let me start by saying I am a novice in the use of DICOM files when it comes to anything more than viewing/interpreting the final products in PACS, so please excuse me for the use of any incorrect nomenclature, I will do…

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## [Issues with saving transformed data](https://discourse.slicer.org/t/issues-with-saving-transformed-data/28863)

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**Author:** [@jgrime](https://discourse.slicer.org/u/jgrime)\
**Replies:** 13\
**Last updated:** [April 17, 2023, 8:46pm UTC](https://discourse.slicer.org/t/issues-with-saving-transformed-data/28863 "2023-04-17T20:46:25Z")

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Hi! I’m trying to use Slicer 5.2.2 to align two 3D data sets, both of which feature data arranged on regular axis-aligned grid. I first recentre the target data set volume on the world origin, and then tweak the orient…

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## [All files are deleted when files are deleted from the DICOM database](https://discourse.slicer.org/t/all-files-are-deleted-when-files-are-deleted-from-the-dicom-database/28950)

<div class="topic-metadata">

**Author:** [@jhchoi](https://discourse.slicer.org/u/jhchoi)\
**Replies:** 1\
**Last updated:** [April 17, 2023, 4:29pm UTC](https://discourse.slicer.org/t/all-files-are-deleted-when-files-are-deleted-from-the-dicom-database/28950 "2023-04-17T16:29:39Z")

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All actual files are deleted when files are deleted from the DICOM database. version : 5.2.2 platform : win11 installed various modules

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## [Pandas dataframe .to\_json() crashes Custom Application](https://discourse.slicer.org/t/pandas-dataframe-to-json-crashes-custom-application/28954)

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**Author:** [@brandus1](https://discourse.slicer.org/u/brandus1)\
**Replies:** 1\
**Last updated:** [April 17, 2023, 4:01pm UTC](https://discourse.slicer.org/t/pandas-dataframe-to-json-crashes-custom-application/28954 "2023-04-17T16:01:03Z")

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Hi, I have a custom app built with SlicerCustomAppTemplate (slicer 5.2.2). I compiled the application on ubuntu 20.04 (docker), and a weird thing is happening. calling .to\_json() from any pandas dataframe crashes the …

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## [Convert DICOM stacks to STL](https://discourse.slicer.org/t/convert-dicom-stacks-to-stl/28964)

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**Author:** [@robin](https://discourse.slicer.org/u/robin)\
**Replies:** 2\
**Last updated:** [April 17, 2023, 3:18pm UTC](https://discourse.slicer.org/t/convert-dicom-stacks-to-stl/28964 "2023-04-17T15:18:43Z")

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Operating system: Windows 10 Slicer version:5.2.1 Expected behavior: display DICOM stack as solid model Actual behavior: screens remain blank There are instructions which if followed should allow DICOM stacks to be c…

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## [Windows launcher doesn't work](https://discourse.slicer.org/t/windows-launcher-doesnt-work/28963)

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**Author:** [@Kening\_Zhang](https://discourse.slicer.org/u/Kening_Zhang)\
**Replies:** 1\
**Last updated:** [April 17, 2023, 2:02pm UTC](https://discourse.slicer.org/t/windows-launcher-doesnt-work/28963 "2023-04-17T14:02:56Z")

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I was trying for calling a module from cli but doesn’t work. I tried two ways, one was directly calling the module exe, but it shown many dll files missing. Then I tried to use launcher but it doesn’t give any output. …

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## [RTplan beam shape - "Block sequence" dicom parameter](https://discourse.slicer.org/t/rtplan-beam-shape-block-sequence-dicom-parameter/28962)

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**Author:** [@Francesca\_6](https://discourse.slicer.org/u/Francesca_6)\
**Replies:** 4\
**Last updated:** [April 17, 2023, 1:49pm UTC](https://discourse.slicer.org/t/rtplan-beam-shape-block-sequence-dicom-parameter/28962 "2023-04-17T13:49:08Z")

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Hello everyone, I am new to the community and am starting to use 3D slicer on images of veterinary patients in the context of synchrotron micro beam radiotherapy. In this setting, during radiotherapy, we use masks that…

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## [Report a bug about import the fcsv file](https://discourse.slicer.org/t/report-a-bug-about-import-the-fcsv-file/28958)

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**Author:** [@Chuan](https://discourse.slicer.org/u/Chuan)\
**Replies:** 1\
**Last updated:** [April 17, 2023, 12:04pm UTC](https://discourse.slicer.org/t/report-a-bug-about-import-the-fcsv-file/28958 "2023-04-17T12:04:34Z")

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Hi, I would like to report a bug when I load the fcsv files. I export landmarks as fcsv files, but when I want to load them in a new slicer windows. I found the value was changed to the opposite value automatically. F…

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## [Measurement on segmented volume](https://discourse.slicer.org/t/measurement-on-segmented-volume/28951)

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**Author:** [@KSL](https://discourse.slicer.org/u/KSL)\
**Replies:** 0\
**Last updated:** [April 17, 2023, 5:00am UTC](https://discourse.slicer.org/t/measurement-on-segmented-volume/28951 "2023-04-17T05:00:59Z")

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Hello, Sir/Madam I tried linear measurement on segmented volumes with the smoothing factor. I applied varying levels of smoothing factors to obtain a realistic shape. However, the sizes of the volumes get altered tremen…

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## [Only one of 28  segments is showing in 3d](https://discourse.slicer.org/t/only-one-of-28-segments-is-showing-in-3d/28934)

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**Author:** [@Tobias](https://discourse.slicer.org/u/Tobias)\
**Replies:** 4\
**Last updated:** [April 16, 2023, 8:20pm UTC](https://discourse.slicer.org/t/only-one-of-28-segments-is-showing-in-3d/28934 "2023-04-16T20:20:20Z")

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I downloaded a dataset with maps of arterial regions in the brain. It usually works very well to load them as segments and that step worked well. However, when i try and show it in 3D only once of the segments show. I ha…

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## [Get geometrical data from model](https://discourse.slicer.org/t/get-geometrical-data-from-model/28940)

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**Author:** [@ZSoltani](https://discourse.slicer.org/u/ZSoltani)\
**Replies:** 2\
**Last updated:** [April 16, 2023, 5:56pm UTC](https://discourse.slicer.org/t/get-geometrical-data-from-model/28940 "2023-04-16T17:56:44Z")

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Hello everyone, After segmenting model in Segment Editor, is there any way to get the geometrical data (such as volume and/or the area of the outer surface) for each segmentation? Thank you, Zahra

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## [ProcessAllCTInDir - SlicerLungCTAnalyzer](https://discourse.slicer.org/t/processallctindir-slicerlungctanalyzer/28762)

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**Author:** [@giurdeluca](https://discourse.slicer.org/u/giurdeluca)\
**Replies:** 15\
**Last updated:** [April 16, 2023, 12:36pm UTC](https://discourse.slicer.org/t/processallctindir-slicerlungctanalyzer/28762 "2023-04-16T12:36:13Z")

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Hi @rbumm first of all thank you for your work! I want to segment and analyze many lung CT images (i’m interested in emphysema features), so doing it with a batch script from command line would be the best to achieve co…

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## [Saving a 3D image](https://discourse.slicer.org/t/saving-a-3d-image/28938)

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**Author:** [@Roro1](https://discourse.slicer.org/u/Roro1)\
**Replies:** 2\
**Last updated:** [April 16, 2023, 8:48am UTC](https://discourse.slicer.org/t/saving-a-3d-image/28938 "2023-04-16T08:48:06Z")

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Hi everyone, we have currently a project in which we have to create a 3D-image of a bone. The fact is that I would like to export the created 3D-picture in order to turn it without being in the application. However, when…

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## [Unable to download 3D SLICER 5.2.2 for windows](https://discourse.slicer.org/t/unable-to-download-3d-slicer-5-2-2-for-windows/28886)

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**Author:** [@zahra](https://discourse.slicer.org/u/zahra)\
**Replies:** 6\
**Last updated:** [April 15, 2023, 9:50pm UTC](https://discourse.slicer.org/t/unable-to-download-3d-slicer-5-2-2-for-windows/28886 "2023-04-15T21:50:53Z")

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Hello For a week I’ve been trying to download the software from this page : https://download.slicer.org/ the download starts and stops suddenly and shows me “unable to download” Any solution that can help me ? Thanks…

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## [Remove CT table from volume rendering](https://discourse.slicer.org/t/remove-ct-table-from-volume-rendering/28872)

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**Author:** [@Jonathan\_Millard](https://discourse.slicer.org/u/Jonathan_Millard)\
**Replies:** 13\
**Last updated:** [April 15, 2023, 4:16pm UTC](https://discourse.slicer.org/t/remove-ct-table-from-volume-rendering/28872 "2023-04-15T16:16:31Z")

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Hello all, I am attempting to visualize the skeletal elements of a CT scan (DICOM), along with taking screenshots suitable for publication. I am using the volume rendering module CT-AAA2 preset and it looks lovely; howe…

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