# Support

**URL:** https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=76

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

**Page:** 77

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## [Nasal Cavity Segmentation](https://discourse.slicer.org/t/nasal-cavity-segmentation/38219)

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**Author:** [@Arash1](https://discourse.slicer.org/u/Arash1)\
**Replies:** 0\
**Last updated:** [September 4, 2024, 8:27pm UTC](https://discourse.slicer.org/t/nasal-cavity-segmentation/38219 "2024-09-04T20:27:23Z")

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Hello I wanted to ask for advice on nasal cavity segmentation. (turbinates and sinuses). I have my CT Scan dataset and have resampled it, which has helped a lot. Using the threshold, level tracing, paint, erase, and l…

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## [Error when viewing cropped volume](https://discourse.slicer.org/t/error-when-viewing-cropped-volume/38215)

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**Author:** [@aalogaidi](https://discourse.slicer.org/u/aalogaidi)\
**Replies:** 1\
**Last updated:** [September 4, 2024, 6:28pm UTC](https://discourse.slicer.org/t/error-when-viewing-cropped-volume/38215 "2024-09-04T18:28:06Z")

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I used the crop volume function to crop a specific DOI in my model, however when I try to view the cropped volume, I get this error then the software crashes. has anyone had this issue? are there any solutions?

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## [Cartilage Thickness](https://discourse.slicer.org/t/cartilage-thickness/38160)

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**Author:** [@Kowsar\_Sheikhi](https://discourse.slicer.org/u/Kowsar_Sheikhi)\
**Replies:** 14\
**Last updated:** [September 4, 2024, 10:50am UTC](https://discourse.slicer.org/t/cartilage-thickness/38160 "2024-09-04T10:50:51Z")

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Hi, I need help with the thickness option in 3D Slicer. I followed all the steps to visualize the cartilage thickness, but it isn’t showing the thickness correctly. I suspect the mapping direction for the thickness migh…

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## [Regarding formatting issues](https://discourse.slicer.org/t/regarding-formatting-issues/38197)

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**Author:** [@kun](https://discourse.slicer.org/u/kun)\
**Replies:** 1\
**Last updated:** [September 4, 2024, 10:44am UTC](https://discourse.slicer.org/t/regarding-formatting-issues/38197 "2024-09-04T10:44:39Z")

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Does 3Dslicer only support importing DICOM format files? Is there a plugin that can convert OBJ format to a format suitable for 3Dslicer? :pray:t2:

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## [Interactive slice intersections](https://discourse.slicer.org/t/interactive-slice-intersections/21677)

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**Author:** [@dgmato](https://discourse.slicer.org/u/dgmato)\
**Replies:** 19\
**Last updated:** [September 4, 2024, 10:43am UTC](https://discourse.slicer.org/t/interactive-slice-intersections/21677 "2024-09-04T10:43:16Z")

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Until now, slice intersection navigation was based on hotkeys like Shift+drag for moving the 3D cursor, or Ctrl+Alt+drag&drop for rotation of the slice planes when slice intersections are shown. We added a new feature t…

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## [How can i make landmarks evenly distributed in the mandible?](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109)

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**Author:** [@yijie3091](https://discourse.slicer.org/u/yijie3091)\
**Replies:** 6\
**Last updated:** [September 4, 2024, 7:56am UTC](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109 "2024-09-04T07:56:42Z")

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Operating system:win11 Slicer version:5.6.2 Expected behavior:i want to use the “PseudoLandmarks” where i use "Original Geometry"to make the landmarks evenly distributed in the mandible. Actual behavior:it has some b…

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## [SpatialLabs stereoscopic display](https://discourse.slicer.org/t/spatiallabs-stereoscopic-display/34800)

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**Author:** [@Mark\_Ryan](https://discourse.slicer.org/u/Mark_Ryan)\
**Replies:** 15\
**Last updated:** [September 4, 2024, 4:18am UTC](https://discourse.slicer.org/t/spatiallabs-stereoscopic-display/34800 "2024-09-04T04:18:09Z")

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I recently purchased the SpatialLabs monitor - the pro version and was wondering if anyone had experience with this or something similar. The display works with 2 eye tracking cameras and a lenticular display to show a …

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## [Adding Offscreen Rendering for High-Resolution Screenshots](https://discourse.slicer.org/t/adding-offscreen-rendering-for-high-resolution-screenshots/29341)

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**Author:** [@Eirikr\_Ng](https://discourse.slicer.org/u/Eirikr_Ng)\
**Replies:** 2\
**Last updated:** [September 3, 2024, 11:03pm UTC](https://discourse.slicer.org/t/adding-offscreen-rendering-for-high-resolution-screenshots/29341 "2024-09-03T23:03:21Z")

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I understand that the scale factor has not been functioning properly for some time, and in order to obtain high-resolution screenshots, it appears that offscreen rendering is currently the only option. Is it possible to …

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## [VTK multivolume/cinematic volume rendering](https://discourse.slicer.org/t/vtk-multivolume-cinematic-volume-rendering/31981)

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**Author:** [@Deep\_Learning](https://discourse.slicer.org/u/Deep_Learning)\
**Replies:** 56\
**Last updated:** [September 3, 2024, 10:11pm UTC](https://discourse.slicer.org/t/vtk-multivolume-cinematic-volume-rendering/31981 "2024-09-03T22:11:10Z")

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Looking for advice. When starting with a 3D volume and a segmentation with 10 segments… What are the options in using multivolume volume rendering? I know that one option is to create 10 volumes using fill outside =0. …

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## [Extend the markup json to support multiple markups object](https://discourse.slicer.org/t/extend-the-markup-json-to-support-multiple-markups-object/38185)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 7\
**Last updated:** [September 3, 2024, 7:14pm UTC](https://discourse.slicer.org/t/extend-the-markup-json-to-support-multiple-markups-object/38185 "2024-09-03T19:14:52Z")

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In SlicerMorph, we often create different types of markup objects on the same volume/module (e.g., anatomical landmarks, geometrically sampled landmarks, resampled curves etc.). Due to analytical requirements, we have t…

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## [Transform for x,y,z involving HU](https://discourse.slicer.org/t/transform-for-x-y-z-involving-hu/38187)

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**Author:** [@francois](https://discourse.slicer.org/u/francois)\
**Replies:** 0\
**Last updated:** [September 3, 2024, 5:25pm UTC](https://discourse.slicer.org/t/transform-for-x-y-z-involving-hu/38187 "2024-09-03T17:25:20Z")

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Dear qll Thank you for all you do for this community. I\`m new here My project is to extract all or segmented spatial and HU data (4 columns) from a bone dataset, perform a mathematical transform of the x,y,z coordinate…

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## [Change actor properties through code?](https://discourse.slicer.org/t/change-actor-properties-through-code/38186)

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**Author:** [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Replies:** 0\
**Last updated:** [September 3, 2024, 5:21pm UTC](https://discourse.slicer.org/t/change-actor-properties-through-code/38186 "2024-09-03T17:21:39Z")

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This example code does not work for me on Slicer 5.6.2 (the 3D model appearance does not change at all)

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## [DentalSegmentator failed to load the segmentation with an error occurred during install : nnunetv2](https://discourse.slicer.org/t/dentalsegmentator-failed-to-load-the-segmentation-with-an-error-occurred-during-install-nnunetv2/38179)

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**Author:** [@igy](https://discourse.slicer.org/u/igy)\
**Replies:** 0\
**Last updated:** [September 3, 2024, 12:26pm UTC](https://discourse.slicer.org/t/dentalsegmentator-failed-to-load-the-segmentation-with-an-error-occurred-during-install-nnunetv2/38179 "2024-09-03T12:26:19Z")

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Hello，I encountered an error while applying the extension this was how it went 2024/09/03 16:42:23.363 :: Start nnUNet install with requirements : nnunetv2 2024/09/03 16:42:23.368 :: - Installing pandas… 2024/09/0…

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## [Dropdown menus spawn on other monitor](https://discourse.slicer.org/t/dropdown-menus-spawn-on-other-monitor/13003)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 14\
**Last updated:** [September 3, 2024, 12:23pm UTC](https://discourse.slicer.org/t/dropdown-menus-spawn-on-other-monitor/13003 "2024-09-03T12:23:44Z")

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Problem report for Slicer 4.11.0-2020-08-10 win-amd64. Some dropdown menus (e.g. for recent modules, layouts, crosshair, but NOT the Modules selector) spawn on a different screen than is occupied by the Slicer applicati…

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## [How to make the model surface close](https://discourse.slicer.org/t/how-to-make-the-model-surface-close/38171)

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**Author:** [@jay1987](https://discourse.slicer.org/u/jay1987)\
**Replies:** 1\
**Last updated:** [September 3, 2024, 7:06am UTC](https://discourse.slicer.org/t/how-to-make-the-model-surface-close/38171 "2024-09-03T07:06:19Z")

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i use dynamic models to cut model into two seperate models , one of them is the blue picture upper,but the surface is open like the red rectangle in the picture , the opened surface can’t do 3d printer work . is it pos…

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## [The volume and segmentation do not correspond](https://discourse.slicer.org/t/the-volume-and-segmentation-do-not-correspond/38168)

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**Author:** [@dingdanpeng](https://discourse.slicer.org/u/dingdanpeng)\
**Replies:** 0\
**Last updated:** [September 3, 2024, 2:33am UTC](https://discourse.slicer.org/t/the-volume-and-segmentation-do-not-correspond/38168 "2024-09-03T02:33:19Z")

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I open the nii file and then want to open the corresponding segmention result, I select segmention, but there is a problem. My original image does not correspond to the location of the segmentation result. However, if I …

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## [Preparing Segmentations for MonaiLabel](https://discourse.slicer.org/t/preparing-segmentations-for-monailabel/38157)

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**Author:** [@evaherbst](https://discourse.slicer.org/u/evaherbst)\
**Replies:** 3\
**Last updated:** [September 2, 2024, 4:06pm UTC](https://discourse.slicer.org/t/preparing-segmentations-for-monailabel/38157 "2024-09-02T16:06:28Z")

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Hi all, I have read several posts about the topic of label values and wanted to double check about the best approach. We have segmentations of shoulder bones but have not ensured label value consistency, so we need to …

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## [Face Selection by Property](https://discourse.slicer.org/t/face-selection-by-property/37894)

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**Author:** [@evaherbst](https://discourse.slicer.org/u/evaherbst)\
**Replies:** 18\
**Last updated:** [September 2, 2024, 3:56pm UTC](https://discourse.slicer.org/t/face-selection-by-property/37894 "2024-09-02T15:56:52Z")

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Hello, I have a few questions about face selection. Is there a tool to select faces by clicking on them / with a lasso? Do methods exist do grow this selection? Are there methods to select faces based on angles betwee…

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## [Multimodality imaging registration](https://discourse.slicer.org/t/multimodality-imaging-registration/38151)

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**Author:** [@Mouadh\_Ben\_Nasr](https://discourse.slicer.org/u/Mouadh_Ben_Nasr)\
**Replies:** 1\
**Last updated:** [September 2, 2024, 2:32pm UTC](https://discourse.slicer.org/t/multimodality-imaging-registration/38151 "2024-09-02T14:32:27Z")

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I am actually struggling with a project using multi-modalities to evaluate minimal distance between a treated area and tumor. I am using CE CT and/or MRI for pre procedural images and 90Y PETCT or MRI images as post pro…

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## [Gray areas in registered images using 3D Slicer](https://discourse.slicer.org/t/gray-areas-in-registered-images-using-3d-slicer/38132)

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**Author:** [@Nastaran](https://discourse.slicer.org/u/Nastaran)\
**Replies:** 2\
**Last updated:** [September 2, 2024, 9:42am UTC](https://discourse.slicer.org/t/gray-areas-in-registered-images-using-3d-slicer/38132 "2024-09-02T09:42:02Z")

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Hello @cpinter I used 3D Slicer’s General Registration (BRAINS) to register brain CT images from two different modalities. An example of the resulting registered image with the background filled value set to 0.0 shows g…

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## [DCM file (change color map) It may too basic to you. help me!](https://discourse.slicer.org/t/dcm-file-change-color-map-it-may-too-basic-to-you-help-me/38152)

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**Author:** [@Lamont](https://discourse.slicer.org/u/Lamont)\
**Replies:** 0\
**Last updated:** [September 2, 2024, 3:11am UTC](https://discourse.slicer.org/t/dcm-file-change-color-map-it-may-too-basic-to-you-help-me/38152 "2024-09-02T03:11:25Z")

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I know this question can be very basic and cumbersome. But using 3d slicer in windows, I’m having a lot of trouble trying to convert the surface changes to color maps. I converted dcm files to stl file. and I want to …

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## [SSIM computation on 3D slicer 5.7.0](https://discourse.slicer.org/t/ssim-computation-on-3d-slicer-5-7-0/38121)

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**Author:** [@Offormata\_Osunkwor](https://discourse.slicer.org/u/Offormata_Osunkwor)\
**Replies:** 3\
**Last updated:** [September 2, 2024, 2:34am UTC](https://discourse.slicer.org/t/ssim-computation-on-3d-slicer-5-7-0/38121 "2024-09-02T02:34:27Z")

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Is there any module on slicer for computing structural similarity index? or any python code will be much appreciated.

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## [Rotation in plane created by API : is it normal?](https://discourse.slicer.org/t/rotation-in-plane-created-by-api-is-it-normal/38148)

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**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 1\
**Last updated:** [September 1, 2024, 11:36am UTC](https://discourse.slicer.org/t/rotation-in-plane-created-by-api-is-it-normal/38148 "2024-09-01T11:36:58Z")

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If a markups plane is created using the API, and its normal and origin are set to those of another plane interactively placed in a rotated 3D view, the plane created by API has an extra rotation. interactivePlane = getN…

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## [Invalid link for the "Hello Python Programming" tutorial on the official SlicerIGT page](https://discourse.slicer.org/t/invalid-link-for-the-hello-python-programming-tutorial-on-the-official-slicerigt-page/38102)

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**Author:** [@Vincenzo\_Yuto\_Civale](https://discourse.slicer.org/u/Vincenzo_Yuto_Civale)\
**Replies:** 3\
**Last updated:** [August 31, 2024, 3:06pm UTC](https://discourse.slicer.org/t/invalid-link-for-the-hello-python-programming-tutorial-on-the-official-slicerigt-page/38102 "2024-08-31T15:06:25Z")

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Hi everyone, I noticed that the link to the “Hello Python Programming” tutorial PDF on the official SlicerIGT website (https://www.slicer.org/w/img\_auth.php/c/c0/Slicer4\_ProgrammingTutorial\_Slicer4.5.pdf) is not valid. …

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## [DICOM images without Geometry Information](https://discourse.slicer.org/t/dicom-images-without-geometry-information/38141)

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**Author:** [@khersi](https://discourse.slicer.org/u/khersi)\
**Replies:** 1\
**Last updated:** [August 31, 2024, 2:12pm UTC](https://discourse.slicer.org/t/dicom-images-without-geometry-information/38141 "2024-08-31T14:12:26Z")

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Operating system: Windows Slicer version: 5.2.2 Expected behavior: To see 3D images Actual behavior: Can not see 3D images Hello, I have CT Scans images taken at the hospital in DICOM format. When I load those image…

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## [Slicer crash when combining surface models](https://discourse.slicer.org/t/slicer-crash-when-combining-surface-models/20108)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 4\
**Last updated:** [August 30, 2024, 6:43pm UTC](https://discourse.slicer.org/t/slicer-crash-when-combining-surface-models/20108 "2024-08-30T18:43:53Z")

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I have a reproducible Slicer crash when trying to combine two surface models using the Combine Models module. The models were both created by converting from segmentation segments, and one of them has been cut using the …

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## [What is the minimum unit of pixel value in CT](https://discourse.slicer.org/t/what-is-the-minimum-unit-of-pixel-value-in-ct/38134)

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**Author:** [@soil\_soil](https://discourse.slicer.org/u/soil_soil)\
**Replies:** 1\
**Last updated:** [August 30, 2024, 6:32pm UTC](https://discourse.slicer.org/t/what-is-the-minimum-unit-of-pixel-value-in-ct/38134 "2024-08-30T18:32:34Z")

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The smallest unit of the fountain pen in segmentation is the smallest pixel of CT, but the distribution of brightness and darkness can be seen within a single pixel. How is the intensity value within a single pixel deter…

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## [Cannot open fusion images of PET ](https://discourse.slicer.org/t/cannot-open-fusion-images-of-pet/38133)

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**Author:** [@Emm](https://discourse.slicer.org/u/Emm)\
**Replies:** 2\
**Last updated:** [August 30, 2024, 6:30pm UTC](https://discourse.slicer.org/t/cannot-open-fusion-images-of-pet/38133 "2024-08-30T18:30:13Z")

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Hey there, I have the following problem: I try to open an exam with a native, PET and fusion series. Although the first two open when I try to load the fusion I get two messages: “606: Unnamed Series \[Scalar Volume\]: …

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## [Segment misalignment](https://discourse.slicer.org/t/segment-misalignment/38003)

<div class="topic-metadata">

**Author:** [@Arash1](https://discourse.slicer.org/u/Arash1)\
**Replies:** 10\
**Last updated:** [August 30, 2024, 6:05pm UTC](https://discourse.slicer.org/t/segment-misalignment/38003 "2024-08-30T18:05:31Z")

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Hi all Hope you are doing great. I am working on nasal cavity segmentation. One issue that I have is that the segment doesn’t overlap with the DICOM (picture attached). A few technical details to mention are that I di…

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## [Crop Volume Not Working](https://discourse.slicer.org/t/crop-volume-not-working/38067)

<div class="topic-metadata">

**Author:** [@Arash1](https://discourse.slicer.org/u/Arash1)\
**Replies:** 3\
**Last updated:** [August 30, 2024, 10:25am UTC](https://discourse.slicer.org/t/crop-volume-not-working/38067 "2024-08-30T10:25:20Z")

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Hi I have an issue that I dont know the reason. No new modules was installed, dataset are the same, and pretty much everything but the Crop Volume module is not working. Here are the codes Python 3.9.10 (main, Apr 5 …

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