# Support

**URL:** https://discourse.slicer.org/c/support/11.md?no_subcategories=false&page=82

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

**Page:** 83

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## [CBCTToothSegmentation](https://discourse.slicer.org/t/cbcttoothsegmentation/37503)

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**Author:** [@Fulvia\_Monaco](https://discourse.slicer.org/u/Fulvia_Monaco)\
**Replies:** 1\
**Last updated:** [July 22, 2024, 9:40pm UTC](https://discourse.slicer.org/t/cbcttoothsegmentation/37503 "2024-07-22T21:40:48Z")

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Hi, I’m tring to use the extension CBTTooth Segmentation and it doesn’t works. I’m trying to do single tooth segmentation, and I need the better quality possible, how I can do it? Can You help me? thank you very much. T…

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## [Anyone know how to install older versions of VMTK?](https://discourse.slicer.org/t/anyone-know-how-to-install-older-versions-of-vmtk/37499)

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**Author:** [@njesma01](https://discourse.slicer.org/u/njesma01)\
**Replies:** 1\
**Last updated:** [July 22, 2024, 9:35pm UTC](https://discourse.slicer.org/t/anyone-know-how-to-install-older-versions-of-vmtk/37499 "2024-07-22T21:35:11Z")

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I need to install vmtk 1.2 for my research but cannot find it. Anyone know how to help? Best, Noah

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## [Area of each slice](https://discourse.slicer.org/t/area-of-each-slice/16821)

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**Author:** [@Gonzalo\_Rojas\_Costa](https://discourse.slicer.org/u/Gonzalo_Rojas_Costa)\
**Replies:** 4\
**Last updated:** [July 22, 2024, 4:13pm UTC](https://discourse.slicer.org/t/area-of-each-slice/16821 "2024-07-22T16:13:04Z")

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I made a 3D ROI with Segment Editor module in an MRI image… How can I get the area of each sagittal slice?

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## [How to load AIM annotations on top of the scans?](https://discourse.slicer.org/t/how-to-load-aim-annotations-on-top-of-the-scans/37361)

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**Author:** [@Neermita\_B](https://discourse.slicer.org/u/Neermita_B)\
**Replies:** 12\
**Last updated:** [July 22, 2024, 4:43am UTC](https://discourse.slicer.org/t/how-to-load-aim-annotations-on-top-of-the-scans/37361 "2024-07-22T04:43:28Z")

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Operating system: Windows 11 Slicer version: 5.6.2 Expected behavior: Quantitative Reporting should allow me to import AIM xml files Actual behavior: It does not allow me to do that.

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## [Corneal OCT imaging and volume computation](https://discourse.slicer.org/t/corneal-oct-imaging-and-volume-computation/37176)

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**Author:** [@Roman\_Chudzinski](https://discourse.slicer.org/u/Roman_Chudzinski)\
**Replies:** 2\
**Last updated:** [July 21, 2024, 5:07pm UTC](https://discourse.slicer.org/t/corneal-oct-imaging-and-volume-computation/37176 "2024-07-21T17:07:30Z")

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Hello, i’m new to using 3DSlicer and want some advice to know if my project is doable. I want to use optical coherence tomography of the cornea to estimate the volume of a region of interest. I want to do a manual conto…

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## [Extensions Manager install](https://discourse.slicer.org/t/extensions-manager-install/37466)

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**Author:** [@lirongyaoper](https://discourse.slicer.org/u/lirongyaoper)\
**Replies:** 2\
**Last updated:** [July 20, 2024, 3:36am UTC](https://discourse.slicer.org/t/extensions-manager-install/37466 "2024-07-20T03:36:25Z")

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Hello teacher, after I successfully installed 3D Slicer, I encountered a problem about “Extensions Manager install”. The operating system I use is “ubuntu 24.04”; the version of the 3D Slicer software I installed is “S…

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## [Brain Segmentation in MR](https://discourse.slicer.org/t/brain-segmentation-in-mr/36924)

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**Author:** [@BDhoth](https://discourse.slicer.org/u/BDhoth)\
**Replies:** 5\
**Last updated:** [July 19, 2024, 7:00pm UTC](https://discourse.slicer.org/t/brain-segmentation-in-mr/36924 "2024-07-19T19:00:19Z")

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Operating system: Windows Slicer version:5.6.2 Expected behavior: I have been trying to get a good brain segmentation for quite a while and have attempted the skull stripping without much success. I have watched severa…

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## [Segmentation criteria for using SegmentGeometry to calculate 2nd moments](https://discourse.slicer.org/t/segmentation-criteria-for-using-segmentgeometry-to-calculate-2nd-moments/37461)

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**Author:** [@chz31](https://discourse.slicer.org/u/chz31)\
**Replies:** 2\
**Last updated:** [July 19, 2024, 6:48pm UTC](https://discourse.slicer.org/t/segmentation-criteria-for-using-segmentgeometry-to-calculate-2nd-moments/37461 "2024-07-19T18:48:57Z")

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I am planning to use Segment Geometry from SlicerBiomech Extension to calculate 2nd moments of area for mouse mandibles based on cross sections. Mouse have large incisors, should I remove them and other teeth or include …

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## [Slice view annotation controls](https://discourse.slicer.org/t/slice-view-annotation-controls/37430)

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**Author:** [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Replies:** 3\
**Last updated:** [July 19, 2024, 11:15am UTC](https://discourse.slicer.org/t/slice-view-annotation-controls/37430 "2024-07-19T11:15:45Z")

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Hi all, I just wanted to turn off slice view annotations in the latest Slicer and I found that it does not work. The main checkbox in the module does not have any effect: Steps: Load MRHead (see annotation in all s…

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## [How to convert CT liver volume to 2d X ray using Drr generation in 3d slicer](https://discourse.slicer.org/t/how-to-convert-ct-liver-volume-to-2d-x-ray-using-drr-generation-in-3d-slicer/37445)

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**Author:** [@ebin1234](https://discourse.slicer.org/u/ebin1234)\
**Replies:** 2\
**Last updated:** [July 19, 2024, 10:06am UTC](https://discourse.slicer.org/t/how-to-convert-ct-liver-volume-to-2d-x-ray-using-drr-generation-in-3d-slicer/37445 "2024-07-19T10:06:43Z")

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Hello, I have doubt about using drr generation in 3d slicer.I am attaching the result I got after using DRR generation. What are the parameters I have to set for proper display of the 2d Xray image in 2d views?.

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## [DentalSegmentator result mesh is inverted](https://discourse.slicer.org/t/dentalsegmentator-result-mesh-is-inverted/37408)

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**Author:** [@Romulo\_Alfaro](https://discourse.slicer.org/u/Romulo_Alfaro)\
**Replies:** 19\
**Last updated:** [July 19, 2024, 1:04am UTC](https://discourse.slicer.org/t/dentalsegmentator-result-mesh-is-inverted/37408 "2024-07-19T01:04:23Z")

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Hello, can someone help me please. I am using the DentalSegmentator Extension but the meshes come out inverted. I’ve been trying to change the settings for several hours but I haven’t been able to solve it. I thank you f…

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## [Install 3D Slicer in MacOSX](https://discourse.slicer.org/t/install-3d-slicer-in-macosx/37444)

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**Author:** [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Replies:** 4\
**Last updated:** [July 18, 2024, 8:43pm UTC](https://discourse.slicer.org/t/install-3d-slicer-in-macosx/37444 "2024-07-18T20:43:45Z")

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Dear All, I try to install 3D Slicer in my macos. But then I got the pop up My version os is 10.12.6. Which version 3D slicer should I install?

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## [Convert .PTS landmarks coordinates in .fcsv or .LPS format](https://discourse.slicer.org/t/convert-pts-landmarks-coordinates-in-fcsv-or-lps-format/37303)

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**Author:** [@ATroyelli](https://discourse.slicer.org/u/ATroyelli)\
**Replies:** 4\
**Last updated:** [July 18, 2024, 7:05pm UTC](https://discourse.slicer.org/t/convert-pts-landmarks-coordinates-in-fcsv-or-lps-format/37303 "2024-07-18T19:05:58Z")

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Hi! Is it possible to transform a file of .PTS landmark coordinates into .fcsv or .LPS/.RAS format? I have landmarks coordinated in .TPS to use as templates in ALPACA. Thank you very much in advance Adrian Operating …

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## ["Micro" Changing the L-R Range of ROI Range using arrows](https://discourse.slicer.org/t/micro-changing-the-l-r-range-of-roi-range-using-arrows/37453)

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**Author:** [@coco](https://discourse.slicer.org/u/coco)\
**Replies:** 0\
**Last updated:** [July 18, 2024, 3:24pm UTC](https://discourse.slicer.org/t/micro-changing-the-l-r-range-of-roi-range-using-arrows/37453 "2024-07-18T15:24:43Z")

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Dear all, please see image below How can we set the arrows (up and down) to move by increment of 0.01 rather than 1.00 each time we click on them ? Thanks!

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## [Creating lateral Cephalometry from skull ct / Cbct](https://discourse.slicer.org/t/creating-lateral-cephalometry-from-skull-ct-cbct/37446)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 0\
**Last updated:** [July 18, 2024, 9:56am UTC](https://discourse.slicer.org/t/creating-lateral-cephalometry-from-skull-ct-cbct/37446 "2024-07-18T09:56:02Z")

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Tried the thick slab constructino with some success . but wondering if there is a better way to create it thnaks

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## [SlicerEditor improvement inquiry](https://discourse.slicer.org/t/slicereditor-improvement-inquiry/37244)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 17\
**Last updated:** [July 18, 2024, 9:03am UTC](https://discourse.slicer.org/t/slicereditor-improvement-inquiry/37244 "2024-07-18T09:03:02Z")

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Following from the last PW, there is now a functional prototype of SlicerEditor based on open-source monaco editor. If you would like to give it a try, please use the “working” branch from: You can use the provided …

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## [How to annotate segments on a .ply model](https://discourse.slicer.org/t/how-to-annotate-segments-on-a-ply-model/37440)

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**Author:** [@achernov](https://discourse.slicer.org/u/achernov)\
**Replies:** 1\
**Last updated:** [July 18, 2024, 5:46am UTC](https://discourse.slicer.org/t/how-to-annotate-segments-on-a-ply-model/37440 "2024-07-18T05:46:09Z")

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Hi! I am a new one here. Could you please help me to understand how to start segmentation if I have a .ply model only?

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## [Trouble Installing 3D Slicer on Ubuntu 22.04.4](https://discourse.slicer.org/t/trouble-installing-3d-slicer-on-ubuntu-22-04-4/37402)

<div class="topic-metadata">

**Author:** [@dat-rohit](https://discourse.slicer.org/u/dat-rohit)\
**Replies:** 5\
**Last updated:** [July 18, 2024, 5:17am UTC](https://discourse.slicer.org/t/trouble-installing-3d-slicer-on-ubuntu-22-04-4/37402 "2024-07-18T05:17:09Z")

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Hey everyone, I’m trying to install 3D Slicer and I am encountering an issue where I’m unable to launch the application due to what seems to be like a graphical rendering error. Here are the details of the problem and s…

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## [Slicer 5.0.3 - UKF Tractography Resource Issue](https://discourse.slicer.org/t/slicer-5-0-3-ukf-tractography-resource-issue/25702)

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**Author:** [@cnot](https://discourse.slicer.org/u/cnot)\
**Replies:** 14\
**Last updated:** [July 18, 2024, 3:49am UTC](https://discourse.slicer.org/t/slicer-5-0-3-ukf-tractography-resource-issue/25702 "2024-07-18T03:49:16Z")

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Hi all, I am trying to run UKF Tractography on my DTI data, and am encountering problems that seem to be related to memory use. Note: this always worked with the same data and parameters on a previous release of Slicer…

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## [How can I decrease the number of points of the model?](https://discourse.slicer.org/t/how-can-i-decrease-the-number-of-points-of-the-model/1074)

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**Author:** [@Ramttoong](https://discourse.slicer.org/u/Ramttoong)\
**Replies:** 2\
**Last updated:** [July 17, 2024, 10:42pm UTC](https://discourse.slicer.org/t/how-can-i-decrease-the-number-of-points-of-the-model/1074 "2024-07-17T22:42:41Z")

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The model’s number of points itself never change? How can I decrease the number of points of the model?

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## [Suggestion to layout modification](https://discourse.slicer.org/t/suggestion-to-layout-modification/37434)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 0\
**Last updated:** [July 17, 2024, 7:54pm UTC](https://discourse.slicer.org/t/suggestion-to-layout-modification/37434 "2024-07-17T19:54:29Z")

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it would be great if these icons are arranged in the bar above or at least some of them . that space is wasted in my opinion

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## [How to register donut-shaped markers](https://discourse.slicer.org/t/how-to-register-donut-shaped-markers/37312)

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**Author:** [@lxedk](https://discourse.slicer.org/u/lxedk)\
**Replies:** 2\
**Last updated:** [July 17, 2024, 7:15pm UTC](https://discourse.slicer.org/t/how-to-register-donut-shaped-markers/37312 "2024-07-17T19:15:13Z")

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I have several DICOM volumes containing scans with 7 donut shaped markers arranged in a known pattern. Is there a module to register each donut, to ultimately determine the 6 DOF pose of the pattern? Thanks!

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## [Export segments in stl / obj directly](https://discourse.slicer.org/t/export-segments-in-stl-obj-directly/37420)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 2\
**Last updated:** [July 17, 2024, 6:52pm UTC](https://discourse.slicer.org/t/export-segments-in-stl-obj-directly/37420 "2024-07-17T18:52:59Z")

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i wish i can export segments in STL / obj directly without converting to models then exporting . i think many of user would love to export to print to visualize without any work inside slicer. i know it is simple to c…

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## [Loading MRB file Leads to Creation of Temporary File that Cannot be Deleted](https://discourse.slicer.org/t/loading-mrb-file-leads-to-creation-of-temporary-file-that-cannot-be-deleted/37363)

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**Author:** [@edwardwang1](https://discourse.slicer.org/u/edwardwang1)\
**Replies:** 2\
**Last updated:** [July 17, 2024, 6:45pm UTC](https://discourse.slicer.org/t/loading-mrb-file-leads-to-creation-of-temporary-file-that-cannot-be-deleted/37363 "2024-07-17T18:45:04Z")

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Hi all, I have encountered a bug that I haven’t seen in my many years using Slicer. I was given a .mrb file from a colleague. While Slicer is able to load the MRB correctly, it also reports the error below. Loading C:/…

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## [PCA Principal component analysis](https://discourse.slicer.org/t/pca-principal-component-analysis/37432)

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**Author:** [@Dani98](https://discourse.slicer.org/u/Dani98)\
**Replies:** 1\
**Last updated:** [July 17, 2024, 4:27pm UTC](https://discourse.slicer.org/t/pca-principal-component-analysis/37432 "2024-07-17T16:27:28Z")

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How can I understand the deviation standard of the principal component analysis based on the chosen scaling factors?

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## [Slope and intercept for pixel intensity MRI](https://discourse.slicer.org/t/slope-and-intercept-for-pixel-intensity-mri/37400)

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**Author:** [@IrisM](https://discourse.slicer.org/u/IrisM)\
**Replies:** 1\
**Last updated:** [July 17, 2024, 3:42pm UTC](https://discourse.slicer.org/t/slope-and-intercept-for-pixel-intensity-mri/37400 "2024-07-17T15:42:13Z")

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I want to use 3D slicer to extract first order features with the radiomics module from RTstructs of MRI images. However, I want all the pixel intensities from my MR image to be adapted first by a certain slope and interc…

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## [Capability to add a simple circular ROI to quantify fat fraction.](https://discourse.slicer.org/t/capability-to-add-a-simple-circular-roi-to-quantify-fat-fraction/37427)

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**Author:** [@achery](https://discourse.slicer.org/u/achery)\
**Replies:** 1\
**Last updated:** [July 17, 2024, 11:29am UTC](https://discourse.slicer.org/t/capability-to-add-a-simple-circular-roi-to-quantify-fat-fraction/37427 "2024-07-17T11:29:35Z")

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Hello, I’m try to create a circulate ROI in order to quantify the fat fraction on Philips MRI files but I can’t get circular ROI and Segmentation seems very cumbersome compared to what other viewers can offer. Is there …

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## [MONAI AutoSeg3D head and neck Model ](https://discourse.slicer.org/t/monai-autoseg3d-head-and-neck-model/37426)

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**Author:** [@Alisha](https://discourse.slicer.org/u/Alisha)\
**Replies:** 0\
**Last updated:** [July 17, 2024, 11:00am UTC](https://discourse.slicer.org/t/monai-autoseg3d-head-and-neck-model/37426 "2024-07-17T11:00:58Z")

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I want to get the segmentations(ex. cord, parotid gland, thyroid gland etc.) by using MONAI. Are there any head and neck models for MONAI AutoSeg3D?

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## [Trajectory calculation for stereotaxic frames](https://discourse.slicer.org/t/trajectory-calculation-for-stereotaxic-frames/13963)

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**Author:** [@Gaston](https://discourse.slicer.org/u/Gaston)\
**Replies:** 76\
**Last updated:** [July 17, 2024, 8:47am UTC](https://discourse.slicer.org/t/trajectory-calculation-for-stereotaxic-frames/13963 "2024-07-17T08:47:44Z")

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Good morning, Maybe you can help me. I am looking for an extension or a method that allows to calculate coordinates and angle of a trajectory between an input point and a target point. To be able to be used in stereotac…

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## [Help with STL export](https://discourse.slicer.org/t/help-with-stl-export/37401)

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**Author:** [@Romulo\_Alfaro](https://discourse.slicer.org/u/Romulo_Alfaro)\
**Replies:** 2\
**Last updated:** [July 17, 2024, 8:46am UTC](https://discourse.slicer.org/t/help-with-stl-export/37401 "2024-07-17T08:46:32Z")

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Hello, can someone help me please. I am using the DentalSegmentator Extension but the meshes come out inverted. I’ve been trying to change the settings for several hours but I haven’t been able to solve it. I thank yo…

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