# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=231

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

**Page:** 232

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## [PerkLabBootcamp 2022](https://discourse.slicer.org/t/perklabbootcamp-2022/22698)

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**Author:** [@dalbenzioG](https://discourse.slicer.org/u/dalbenzioG)\
**Replies:** 0\
**Last updated:** [March 26, 2022, 11:15am UTC](https://discourse.slicer.org/t/perklabbootcamp-2022/22698 "2022-03-26T11:15:50Z")

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Hello :slight\_smile: Will there be a PerkLabBootcamp 2022 this year in May? I am really looking forward to it.

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## [about superimposition](https://discourse.slicer.org/t/about-superimposition/22664)

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**Author:** [@ssopy13](https://discourse.slicer.org/u/ssopy13)\
**Replies:** 1\
**Last updated:** [March 26, 2022, 3:31am UTC](https://discourse.slicer.org/t/about-superimposition/22664 "2022-03-26T03:31:16Z")

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Operating system: 3d slicer (window 64bit?) I don’t know what exactly mean… Slicer version:4.11 Expected behavior: 3d model superimposition Actual behavior: hello, I’m user of 3d slicer 4.11 version. Then I have a que…

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## [Error opening an ultrasound .dcm file](https://discourse.slicer.org/t/error-opening-an-ultrasound-dcm-file/22673)

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**Author:** [@Mariano\_Medina](https://discourse.slicer.org/u/Mariano_Medina)\
**Replies:** 1\
**Last updated:** [March 26, 2022, 3:27am UTC](https://discourse.slicer.org/t/error-opening-an-ultrasound-dcm-file/22673 "2022-03-26T03:27:12Z")

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I wanted to open a .dcm file of a 3d ultrasound to do the reconstruction in 3d slicer, but when loading the file it detects error, the error message is: “Image spacing may need to be calibrated for accurate size measurem…

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## [Cardiac Device Simulator - incorrect device sizes](https://discourse.slicer.org/t/cardiac-device-simulator-incorrect-device-sizes/22684)

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**Author:** [@SassanHashemi](https://discourse.slicer.org/u/SassanHashemi)\
**Replies:** 2\
**Last updated:** [March 25, 2022, 11:03pm UTC](https://discourse.slicer.org/t/cardiac-device-simulator-incorrect-device-sizes/22684 "2022-03-25T23:03:58Z")

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Slicer 4.30.0 Windows 10 Core i7-7700H Hi, I noticed the size of Harmony device is quite different between what the sliders on the left say and the actual size on the dicoms as shown in the attached picture. Measurem…

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## [Unrealistic measurement using Ruler tool](https://discourse.slicer.org/t/unrealistic-measurement-using-ruler-tool/22592)

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**Author:** [@Diana\_Song](https://discourse.slicer.org/u/Diana_Song)\
**Replies:** 6\
**Last updated:** [March 25, 2022, 10:37pm UTC](https://discourse.slicer.org/t/unrealistic-measurement-using-ruler-tool/22592 "2022-03-25T22:37:40Z")

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Hello, I’m still very new to 3D slicer, and am trying to use the ruler tool to measure the size of the lymph nodes on 2D breast mammograms. The measurements were unrealistically large (like 100-500mm +, which is 10 cms)…

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## [Changing default graphics card](https://discourse.slicer.org/t/changing-default-graphics-card/22686)

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**Author:** [@Jasmine\_Croghan](https://discourse.slicer.org/u/Jasmine_Croghan)\
**Replies:** 2\
**Last updated:** [March 25, 2022, 10:20pm UTC](https://discourse.slicer.org/t/changing-default-graphics-card/22686 "2022-03-25T22:20:57Z")

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Hi all, 3DSlicer is defaulting to using the integrated graphics card in my computer, but I have a much more powerful discrete graphics card I would like it to use. I’m not seeing an option in the GUI or anything obvious…

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## [Suggestion about overwrite all as default in segment editor](https://discourse.slicer.org/t/suggestion-about-overwrite-all-as-default-in-segment-editor/22680)

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**Author:** [@Hannnonk](https://discourse.slicer.org/u/Hannnonk)\
**Replies:** 1\
**Last updated:** [March 25, 2022, 2:31pm UTC](https://discourse.slicer.org/t/suggestion-about-overwrite-all-as-default-in-segment-editor/22680 "2022-03-25T14:31:56Z")

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Just a thought…why is “overwrite all” the default with logical operators, and threshold, etc? It seems that “allow overlap” would be a better default as you can always go back and subtract? Maybe I am missing some logic…

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## [Importing a series of DICOM files into a single volume](https://discourse.slicer.org/t/importing-a-series-of-dicom-files-into-a-single-volume/22681)

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**Author:** [@stevenagl12](https://discourse.slicer.org/u/stevenagl12)\
**Replies:** 1\
**Last updated:** [March 25, 2022, 2:22pm UTC](https://discourse.slicer.org/t/importing-a-series-of-dicom-files-into-a-single-volume/22681 "2022-03-25T14:22:58Z")

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I have a series of DICOM files, that for some reason will not import as a volume of DICOM images when I use the DICOM series import options. I can drag the folder of the containing files in under normal circumstances, or…

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## [MONAILABEL plugin | pelvis segmentation in MRI](https://discourse.slicer.org/t/monailabel-plugin-pelvis-segmentation-in-mri/22283)

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**Author:** [@Mahdis\_Khodadadi](https://discourse.slicer.org/u/Mahdis_Khodadadi)\
**Replies:** 8\
**Last updated:** [March 24, 2022, 8:40pm UTC](https://discourse.slicer.org/t/monailabel-plugin-pelvis-segmentation-in-mri/22283 "2022-03-24T20:40:29Z")

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Operating system: Windows 10 Slicer version: latest version I want to segment pelvic in MRI from the SMIR dataset using the MONAILABEL plugin. I have read relatively a lot about this plugin. However, I can’t perform th…

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## [Tracheal wall segmentation](https://discourse.slicer.org/t/tracheal-wall-segmentation/22646)

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**Author:** [@Eserval](https://discourse.slicer.org/u/Eserval)\
**Replies:** 3\
**Last updated:** [March 24, 2022, 8:40pm UTC](https://discourse.slicer.org/t/tracheal-wall-segmentation/22646 "2022-03-24T20:40:17Z")

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Hello everyone, I’m trying to expand the usage of Slicer in tracheal stenotic disease. For that, it would be necessary to segment the tracheal wall with its thickness. The workflows that I use to segment the airway are …

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## [Fiducial markers hidden when cropping ROI disabled, and shown when cropping ROI enabled](https://discourse.slicer.org/t/fiducial-markers-hidden-when-cropping-roi-disabled-and-shown-when-cropping-roi-enabled/22665)

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**Author:** [@DIV](https://discourse.slicer.org/u/DIV)\
**Replies:** 3\
**Last updated:** [March 24, 2022, 1:20pm UTC](https://discourse.slicer.org/t/fiducial-markers-hidden-when-cropping-roi-disabled-and-shown-when-cropping-roi-enabled/22665 "2022-03-24T13:20:38Z")

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I created a fiducial maker that was located just outside a cropping ROI. When cropping ROI is enabled and displayed, the external fiducial marker isn’t shown (this is logical). When cropping ROI is enabled but not disp…

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## [Cylinder fitting](https://discourse.slicer.org/t/cylinder-fitting/22523)

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**Author:** [@alyssan](https://discourse.slicer.org/u/alyssan)\
**Replies:** 14\
**Last updated:** [March 23, 2022, 8:52pm UTC](https://discourse.slicer.org/t/cylinder-fitting/22523 "2022-03-23T20:52:18Z")

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I have a segmentation that has a cylindical shape but is uneven and has different radii throughout. I would like to calculate the radius at different intervals to find the largest and smallest radius. Then fit a cylinder…

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## [Why does theTOMAAT extension display "not loaded" after downloading?](https://discourse.slicer.org/t/why-does-thetomaat-extension-display-not-loaded-after-downloading/22649)

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**Author:** [@linda](https://discourse.slicer.org/u/linda)\
**Replies:** 0\
**Last updated:** [March 23, 2022, 12:35pm UTC](https://discourse.slicer.org/t/why-does-thetomaat-extension-display-not-loaded-after-downloading/22649 "2022-03-23T12:35:09Z")

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Problem report for Slicer 4.11.20210226 win-amd64: \[please describe expected and actual behavior\] As shown in the figure. Why?

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## [Cortical bone thickness measurement](https://discourse.slicer.org/t/cortical-bone-thickness-measurement/22648)

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**Author:** [@TommyTurner](https://discourse.slicer.org/u/TommyTurner)\
**Replies:** 0\
**Last updated:** [March 23, 2022, 9:55am UTC](https://discourse.slicer.org/t/cortical-bone-thickness-measurement/22648 "2022-03-23T09:55:05Z")

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Hello everyone ! I am currently working on cortical bone fissuration and to do so, i have to extract the volume of cortical bone from the femoral diaphysis to conduct finite element analysis. As geometry of the bone pl…

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## [Editing landmarks between auto3DGM phases](https://discourse.slicer.org/t/editing-landmarks-between-auto3dgm-phases/22643)

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**Author:** [@Jasmine\_Croghan](https://discourse.slicer.org/u/Jasmine_Croghan)\
**Replies:** 2\
**Last updated:** [March 22, 2022, 9:16pm UTC](https://discourse.slicer.org/t/editing-landmarks-between-auto3dgm-phases/22643 "2022-03-22T21:16:09Z")

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Hi, all another newbie question here. I am using auto3DGM to landmark some turtle hemiskulls, and I do not need landmarks on the inside of the cranium. Currently my solution is to run auto3DGM as is and then go through t…

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## [Loaded volume data showing as one slice, cant render volume](https://discourse.slicer.org/t/loaded-volume-data-showing-as-one-slice-cant-render-volume/22638)

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**Author:** [@Rhythm](https://discourse.slicer.org/u/Rhythm)\
**Replies:** 6\
**Last updated:** [March 22, 2022, 6:47pm UTC](https://discourse.slicer.org/t/loaded-volume-data-showing-as-one-slice-cant-render-volume/22638 "2022-03-22T18:47:52Z")

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Hello I am loading a full body MRI dataset from a GE Signa 1.5T machine. The data appears as only one slice of a 31 slice sequence. I am able to select volume rendering but no volume image appears. I am able to view t…

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## [slicer  vs2022  cmakw 3.22.3   win11 build  error](https://discourse.slicer.org/t/slicer-vs2022-cmakw-3-22-3-win11-build-error/22639)

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**Author:** [@juming](https://discourse.slicer.org/u/juming)\
**Replies:** 0\
**Last updated:** [March 22, 2022, 5:54pm UTC](https://discourse.slicer.org/t/slicer-vs2022-cmakw-3-22-3-win11-build-error/22639 "2022-03-22T17:54:13Z")

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Operating system:win11 Slicer version:4.13 Expected behavior:MSB8066 Actual behavior:MSB8066

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## [Extract HounsField Units of Segmentation and Save](https://discourse.slicer.org/t/extract-hounsfield-units-of-segmentation-and-save/20875)

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**Author:** [@kookoo9999](https://discourse.slicer.org/u/kookoo9999)\
**Replies:** 19\
**Last updated:** [March 22, 2022, 6:08am UTC](https://discourse.slicer.org/t/extract-hounsfield-units-of-segmentation-and-save/20875 "2022-03-22T06:08:46Z")

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Dear @lassoan Hello lassoan , I read this and this too. And I tried to extract HounsField Units and checked saved file when I clicked “Reload and Test” button. These are result.csv and script code. Next day I…

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## [Error: DICOMSegmentationPlugin is not defined](https://discourse.slicer.org/t/error-dicomsegmentationplugin-is-not-defined/22624)

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**Author:** [@Liu\_Lance](https://discourse.slicer.org/u/Liu_Lance)\
**Replies:** 2\
**Last updated:** [March 22, 2022, 1:16am UTC](https://discourse.slicer.org/t/error-dicomsegmentationplugin-is-not-defined/22624 "2022-03-22T01:16:55Z")

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Hi I try with the segmentation export to file function. It does not work for the line “import DICOMScalarVolumePlugin”, in the python console in 3d slicer, the error is like Traceback (most recent call last): File …

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## [Measuring displacement of the zygoma bone after surgery](https://discourse.slicer.org/t/measuring-displacement-of-the-zygoma-bone-after-surgery/22465)

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**Author:** [@Moh\_d\_Al-Watary](https://discourse.slicer.org/u/Moh_d_Al-Watary)\
**Replies:** 7\
**Last updated:** [March 21, 2022, 9:34pm UTC](https://discourse.slicer.org/t/measuring-displacement-of-the-zygoma-bone-after-surgery/22465 "2022-03-21T21:34:34Z")

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Dear friends, wish you all are doing well and fine. Thank you for reading this request. My work is to measure if there is any displacement of the zygoma bone after being surgically repositioned into a new position. I am…

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## [Show color images in Slicer](https://discourse.slicer.org/t/show-color-images-in-slicer/22619)

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**Author:** [@lb123](https://discourse.slicer.org/u/lb123)\
**Replies:** 4\
**Last updated:** [March 21, 2022, 3:46pm UTC](https://discourse.slicer.org/t/show-color-images-in-slicer/22619 "2022-03-21T15:46:20Z")

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Hi, I’m using pyigtl to create a server to send color images to Slicer via IGT Link. I can successfully receive the images in Slicer creating a client using the OpenIGTLinkIF module. However I cannot show the received…

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## [Extraction of features from the T1 phase of MRI](https://discourse.slicer.org/t/extraction-of-features-from-the-t1-phase-of-mri/22505)

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**Author:** [@Helo](https://discourse.slicer.org/u/Helo)\
**Replies:** 10\
**Last updated:** [March 21, 2022, 3:42pm UTC](https://discourse.slicer.org/t/extraction-of-features-from-the-t1-phase-of-mri/22505 "2022-03-21T15:42:30Z")

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Operating system: Windows 10 Slicer version: 4.11 Hi! I am trying to extract features from T1 phase images from MR using the pyRadiomics extension. However, when I select the “input image volume” it does not let me ex…

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## [SlicerRT extension installation](https://discourse.slicer.org/t/slicerrt-extension-installation/22497)

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**Author:** [@Yarden](https://discourse.slicer.org/u/Yarden)\
**Replies:** 6\
**Last updated:** [March 21, 2022, 2:35pm UTC](https://discourse.slicer.org/t/slicerrt-extension-installation/22497 "2022-03-21T14:35:42Z")

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Hi, I wanted to install the slicerRT extension but the extension tab seems empty. Tried to solve it with no success. I saw there is an option to add an extension file externally so i could upload it to 3d slicer as an …

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## [Export RT Structure](https://discourse.slicer.org/t/export-rt-structure/22583)

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**Author:** [@lharzee](https://discourse.slicer.org/u/lharzee)\
**Replies:** 1\
**Last updated:** [March 21, 2022, 2:29pm UTC](https://discourse.slicer.org/t/export-rt-structure/22583 "2022-03-21T14:29:24Z")

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I have imported some dicom data ( CT and RT structure) from an other TPS. I would like to use 3d slicer to create new segment and export this to the TPS. When i use the module “export to dicom” and export the RT struct…

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## [Coordinate system in brainstorm SCS to coordinate system in 3D Slicer](https://discourse.slicer.org/t/coordinate-system-in-brainstorm-scs-to-coordinate-system-in-3d-slicer/22615)

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**Author:** [@Saima](https://discourse.slicer.org/u/Saima)\
**Replies:** 1\
**Last updated:** [March 21, 2022, 1:54pm UTC](https://discourse.slicer.org/t/coordinate-system-in-brainstorm-scs-to-coordinate-system-in-3d-slicer/22615 "2022-03-21T13:54:40Z")

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Dear Andras, I am running into problem of converting the coordinates from SCS to world coordinate system. I exported the mesh from brain storm and then importing it to 3D slicer. It looks as below. any idea on the tr…

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## [Possible to reset a segment ID inside the SegmentEditor?](https://discourse.slicer.org/t/possible-to-reset-a-segment-id-inside-the-segmenteditor/22613)

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**Author:** [@aiden.zhu](https://discourse.slicer.org/u/aiden.zhu)\
**Replies:** 2\
**Last updated:** [March 21, 2022, 1:39pm UTC](https://discourse.slicer.org/t/possible-to-reset-a-segment-id-inside-the-segmenteditor/22613 "2022-03-21T13:39:11Z")

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Inside windows, Version: 4.11.20210226 Hi guys, I have an issue like this: while I apply Method-A: slicer.modules.segmentations.logic().ImportLabelmapToSegmentationNode(self.labelNode, self.segmentationNode), the re…

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## [Run python script from command line not working](https://discourse.slicer.org/t/run-python-script-from-command-line-not-working/22453)

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**Author:** [@bserrano](https://discourse.slicer.org/u/bserrano)\
**Replies:** 13\
**Last updated:** [March 21, 2022, 12:30pm UTC](https://discourse.slicer.org/t/run-python-script-from-command-line-not-working/22453 "2022-03-21T12:30:03Z")

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Hi all, I want to do the same processing to several volumes so it would be very useful to use slicer code from command line. What I want is: open volume → process → export processed volume. I guess I can do it with th…

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## [Lung CT Segmenter with 'Local Threshold' airway segmentation](https://discourse.slicer.org/t/lung-ct-segmenter-with-local-threshold-airway-segmentation/22065)

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**Author:** [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Replies:** 3\
**Last updated:** [March 21, 2022, 12:27pm UTC](https://discourse.slicer.org/t/lung-ct-segmenter-with-local-threshold-airway-segmentation/22065 "2022-03-21T12:27:05Z")

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The old CIP based airway segmentation has been removed from the Lung CT Segmenter extension (in Lung CT Analyzer Version 2.47) and a new airway segmentation technique based on the “Local Threshold” Segment Editor Extra E…

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## [Volume overlay with different dimensions and resampling](https://discourse.slicer.org/t/volume-overlay-with-different-dimensions-and-resampling/22604)

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**Author:** [@Vinny](https://discourse.slicer.org/u/Vinny)\
**Replies:** 0\
**Last updated:** [March 20, 2022, 2:10am UTC](https://discourse.slicer.org/t/volume-overlay-with-different-dimensions-and-resampling/22604 "2022-03-20T02:10:09Z")

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Hi, I have two MRI volumes (diffusion-weighted and T1-weighted) with different dimensions and voxel sizes from the same scanning session. The diffusion-weighted image (DWI) series has been processed and registered to t…

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## [Elastix error\_ 3dslicer](https://discourse.slicer.org/t/elastix-error-3dslicer/16555)

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**Author:** [@sara\_sharifi](https://discourse.slicer.org/u/sara_sharifi)\
**Replies:** 4\
**Last updated:** [March 19, 2022, 1:54pm UTC](https://discourse.slicer.org/t/elastix-error-3dslicer/16555 "2022-03-19T13:54:57Z")

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Hi Windows7-64 Slicer4.11 Elastix windows64 v4.8 For NiFTI format (CT images) after apply General registration(elastix) module for 2 data I have this Error: Command ‘elastix’ returned non-zero exit status 4294967294. …

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