# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=92

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

**Page:** 93

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## [3D rendering from of 16 jpg of OCT image of eyeball](https://discourse.slicer.org/t/3d-rendering-from-of-16-jpg-of-oct-image-of-eyeball/36464)

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**Author:** [@lisavier815](https://discourse.slicer.org/u/lisavier815)\
**Replies:** 6\
**Last updated:** [May 31, 2024, 3:32pm UTC](https://discourse.slicer.org/t/3d-rendering-from-of-16-jpg-of-oct-image-of-eyeball/36464 "2024-05-31T15:32:03Z")

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the jpg like this

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## [How to View RTSTRUCT DICOM file](https://discourse.slicer.org/t/how-to-view-rtstruct-dicom-file/36519)

<div class="topic-metadata">

**Author:** [@Rash\_FGTEK](https://discourse.slicer.org/u/Rash_FGTEK)\
**Replies:** 0\
**Last updated:** [May 31, 2024, 10:40am UTC](https://discourse.slicer.org/t/how-to-view-rtstruct-dicom-file/36519 "2024-05-31T10:40:17Z")

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Hi All, Apologies for this basic question. I am new to 3D Slicer. I am interested to perform radiomics on RTSTRUCT file downloaded from TCIA database. How can I view a RTSTRUCT DICOM file in 3D Slicer. I have downloa…

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## [Volume in Quantification Module](https://discourse.slicer.org/t/volume-in-quantification-module/36487)

<div class="topic-metadata">

**Author:** [@mira\_mira](https://discourse.slicer.org/u/mira_mira)\
**Replies:** 6\
**Last updated:** [May 31, 2024, 3:50am UTC](https://discourse.slicer.org/t/volume-in-quantification-module/36487 "2024-05-31T03:50:31Z")

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Hi Everyone, I am new user in 3D slicer and currently working on metal foam. My difficulty is to compare the quantification data of solid matrix Volume with the data that I obtained using CTan, microCT. My question is,…

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## [How do I calculate dihedral angles using plug-ins-again](https://discourse.slicer.org/t/how-do-i-calculate-dihedral-angles-using-plug-ins-again/36510)

<div class="topic-metadata">

**Author:** [@YLX](https://discourse.slicer.org/u/YLX)\
**Replies:** 0\
**Last updated:** [May 31, 2024, 3:06am UTC](https://discourse.slicer.org/t/how-do-i-calculate-dihedral-angles-using-plug-ins-again/36510 "2024-05-31T03:06:55Z")

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Hi, I was just wondering how do I figure out the dihedral Angle of two planes in 3D Slicer? My plane 1, the yellow plane, is made up of 3 coordinate points, and the purple plane is made up of 4 coordinate points. I have …

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## [TotalSegmentor python package for Slicer plugin showing error](https://discourse.slicer.org/t/totalsegmentor-python-package-for-slicer-plugin-showing-error/35259)

<div class="topic-metadata">

**Author:** [@imruljubair](https://discourse.slicer.org/u/imruljubair)\
**Replies:** 8\
**Last updated:** [May 31, 2024, 3:06am UTC](https://discourse.slicer.org/t/totalsegmentor-python-package-for-slicer-plugin-showing-error/35259 "2024-05-31T03:06:45Z")

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I am getting following error message to work with TotalSegmentor python package on Slicer plugin showing. Can anyone help me? Traceback (most recent call last): File "/Applications/Slicer.app/Contents/bin/Python/slic…

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## [How to Center of Origin to Object Center](https://discourse.slicer.org/t/how-to-center-of-origin-to-object-center/36503)

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**Author:** [@manjula](https://discourse.slicer.org/u/manjula)\
**Replies:** 1\
**Last updated:** [May 30, 2024, 8:02pm UTC](https://discourse.slicer.org/t/how-to-center-of-origin-to-object-center/36503 "2024-05-30T20:02:01Z")

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Hi all, I am working on full workflow for Orthognathic surgery through the 3D Slicer only and planning to make a tutorial. One last piece of puzzle i want to work out is the how to make the maxilla or the mandible to mo…

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## [Reload option for data](https://discourse.slicer.org/t/reload-option-for-data/36496)

<div class="topic-metadata">

**Author:** [@dyollb](https://discourse.slicer.org/u/dyollb)\
**Replies:** 4\
**Last updated:** [May 30, 2024, 3:56pm UTC](https://discourse.slicer.org/t/reload-option-for-data/36496 "2024-05-30T15:56:01Z")

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I see this has been requested before but was dismissed because there is some python API which could be used to achieve the same thing. Nevertheless, I really miss the reload option in the Data module context menu. In Pa…

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## [3D rendering add custom texture in models](https://discourse.slicer.org/t/3d-rendering-add-custom-texture-in-models/36378)

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**Author:** [@hfri](https://discourse.slicer.org/u/hfri)\
**Replies:** 9\
**Last updated:** [May 30, 2024, 3:23pm UTC](https://discourse.slicer.org/t/3d-rendering-add-custom-texture-in-models/36378 "2024-05-30T15:23:05Z")

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Hi, I would like to 3D render a segmentation (model) and instead of using simple colours I would like to define a custom texture. How can I apply a custom texture that I have stored on my computer in .jpg/ .png/.exr for…

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## [The program repeatedly turns on automatically.](https://discourse.slicer.org/t/the-program-repeatedly-turns-on-automatically/36494)

<div class="topic-metadata">

**Author:** [@Seokjun\_Hwang](https://discourse.slicer.org/u/Seokjun_Hwang)\
**Replies:** 2\
**Last updated:** [May 30, 2024, 3:12pm UTC](https://discourse.slicer.org/t/the-program-repeatedly-turns-on-automatically/36494 "2024-05-30T15:12:12Z")

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After linking it with Jupyter Notebook, the Slicer program keeps turning on automatically even after I close it. Could you please help identify the cause and provide a solution? Even after closing Jupyter Notebook and An…

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## [How to obtain coronal and sagittal images reconstructed according to certain layer thickness and layer spacing from the volume data of transverse axis](https://discourse.slicer.org/t/how-to-obtain-coronal-and-sagittal-images-reconstructed-according-to-certain-layer-thickness-and-layer-spacing-from-the-volume-data-of-transverse-axis/36497)

<div class="topic-metadata">

**Author:** [@lotus](https://discourse.slicer.org/u/lotus)\
**Replies:** 0\
**Last updated:** [May 30, 2024, 1:23pm UTC](https://discourse.slicer.org/t/how-to-obtain-coronal-and-sagittal-images-reconstructed-according-to-certain-layer-thickness-and-layer-spacing-from-the-volume-data-of-transverse-axis/36497 "2024-05-30T13:23:50Z")

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Dear experts, How to obtain coronal and sagittal images reconstructed according to certain layer thickness and layer spacing from the volume data of transverse axis Thanks a lot! Best regards Lotus

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## [Setting up units in slicer](https://discourse.slicer.org/t/setting-up-units-in-slicer/34861)

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**Author:** [@coco](https://discourse.slicer.org/u/coco)\
**Replies:** 11\
**Last updated:** [May 30, 2024, 1:04pm UTC](https://discourse.slicer.org/t/setting-up-units-in-slicer/34861 "2024-05-30T13:04:47Z")

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Hi everyone, I think there are a couple of posts about units some of which have been answered in length such as here: Fix custom unit management · Issue #5040 · Slicer/Slicer · GitHub But I am finding surprising that b…

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## [How to make block recession bone model](https://discourse.slicer.org/t/how-to-make-block-recession-bone-model/36488)

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**Author:** [@jj\_J](https://discourse.slicer.org/u/jj_J)\
**Replies:** 0\
**Last updated:** [May 30, 2024, 4:38am UTC](https://discourse.slicer.org/t/how-to-make-block-recession-bone-model/36488 "2024-05-30T04:38:14Z")

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Hello, I am a beginner with 3D Slicer. I want to create a model for FEM analysis where the patellar groove has been block recessed. This model should have a block-shaped cutout in the groove. I would like to adjust the d…

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## [Segmentation of different region of lattice sphere ct scan](https://discourse.slicer.org/t/segmentation-of-different-region-of-lattice-sphere-ct-scan/36486)

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**Author:** [@Vikram](https://discourse.slicer.org/u/Vikram)\
**Replies:** 0\
**Last updated:** [May 30, 2024, 3:46am UTC](https://discourse.slicer.org/t/segmentation-of-different-region-of-lattice-sphere-ct-scan/36486 "2024-05-30T03:46:33Z")

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i have CT scan of sphere with 3 different type lattice in this sphere because this sphere is heterogeneous because in this there is 3 different type of lattice thickness , i want to segment these three separately and…

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## [How do I calculate dihedral angles using plug-ins](https://discourse.slicer.org/t/how-do-i-calculate-dihedral-angles-using-plug-ins/36484)

<div class="topic-metadata">

**Author:** [@YLX](https://discourse.slicer.org/u/YLX)\
**Replies:** 0\
**Last updated:** [May 30, 2024, 3:19am UTC](https://discourse.slicer.org/t/how-do-i-calculate-dihedral-angles-using-plug-ins/36484 "2024-05-30T03:19:48Z")

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Hi, I was just wondering how do I figure out the dihedral Angle of two planes in 3D Slicer? My plane 1, the yellow plane, is made up of 3 coordinate points, and the purple plane is made up of 4 coordinate points. I have …

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## [3D segmentation: ten-point multi-touch tablet functionality (in linux ubuntu)?](https://discourse.slicer.org/t/3d-segmentation-ten-point-multi-touch-tablet-functionality-in-linux-ubuntu/36479)

<div class="topic-metadata">

**Author:** [@hari\_seldon](https://discourse.slicer.org/u/hari_seldon)\
**Replies:** 1\
**Last updated:** [May 29, 2024, 10:50pm UTC](https://discourse.slicer.org/t/3d-segmentation-ten-point-multi-touch-tablet-functionality-in-linux-ubuntu/36479 "2024-05-29T22:50:21Z")

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Hello, first post. I am attempting to 3D segment CT scan data from ancient carbonized scrolls. I am hoping to test out a touchscreen tablet to manipulate the data (cubes, 512x512x512), in such a way that I can freely rot…

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## [How to measure volume of white matter, hippocampus, pituitary and grey matter?](https://discourse.slicer.org/t/how-to-measure-volume-of-white-matter-hippocampus-pituitary-and-grey-matter/36321)

<div class="topic-metadata">

**Author:** [@GIANNIS](https://discourse.slicer.org/u/GIANNIS)\
**Replies:** 3\
**Last updated:** [May 29, 2024, 9:47pm UTC](https://discourse.slicer.org/t/how-to-measure-volume-of-white-matter-hippocampus-pituitary-and-grey-matter/36321 "2024-05-29T21:47:05Z")

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Can I measure the volume of white matter, hippocampus, pituitary and grey matter?

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## [Problems with segmentation of bone, muscle and fat ](https://discourse.slicer.org/t/problems-with-segmentation-of-bone-muscle-and-fat/36196)

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**Author:** [@concker99](https://discourse.slicer.org/u/concker99)\
**Replies:** 3\
**Last updated:** [May 29, 2024, 9:40pm UTC](https://discourse.slicer.org/t/problems-with-segmentation-of-bone-muscle-and-fat/36196 "2024-05-29T21:40:02Z")

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Hello everyone, I’m new to using 3D Slicer and could really use your help. My aim is to segment the muscle, fat, and bone on MRI slices of a rat. here is the data in question: . As for my steps, I’ve uploaded the data…

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## [Increase the size of segment](https://discourse.slicer.org/t/increase-the-size-of-segment/36465)

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**Author:** [@Panos\_Xatsisabbas](https://discourse.slicer.org/u/Panos_Xatsisabbas)\
**Replies:** 3\
**Last updated:** [May 29, 2024, 7:57pm UTC](https://discourse.slicer.org/t/increase-the-size-of-segment/36465 "2024-05-29T19:57:05Z")

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I want to decrease the size (geometry) of a segment and in the same time i want to keep the relations between the surface of another segment. How can i do that??

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## [GPA + PCA Error: Load landmark data failed](https://discourse.slicer.org/t/gpa-pca-error-load-landmark-data-failed/36468)

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**Author:** [@kgies10](https://discourse.slicer.org/u/kgies10)\
**Replies:** 3\
**Last updated:** [May 29, 2024, 6:55pm UTC](https://discourse.slicer.org/t/gpa-pca-error-load-landmark-data-failed/36468 "2024-05-29T18:55:57Z")

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Operating system: Mac OS 14.4.1 Slicer version: 5.6.2 Expected behavior: Generate GPA and PCA Actual behavior: The following Error and warning messages: QRegularExpressionPrivate::doMatch(): called on an invalid QRe…

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## [Seeking Advice on Multi-Color Branching for Vascular Models](https://discourse.slicer.org/t/seeking-advice-on-multi-color-branching-for-vascular-models/36292)

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**Author:** [@petit223](https://discourse.slicer.org/u/petit223)\
**Replies:** 6\
**Last updated:** [May 29, 2024, 2:13pm UTC](https://discourse.slicer.org/t/seeking-advice-on-multi-color-branching-for-vascular-models/36292 "2024-05-29T14:13:31Z")

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Hello everyone, I am currently working on a project where I aim to color different branches of a vascular model with distinct colors. I start by selecting a main vessel and use the first branching point as an anchor. Fr…

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## [Body composition](https://discourse.slicer.org/t/body-composition/36467)

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**Author:** [@Kennyb0yy](https://discourse.slicer.org/u/Kennyb0yy)\
**Replies:** 1\
**Last updated:** [May 29, 2024, 1:59pm UTC](https://discourse.slicer.org/t/body-composition/36467 "2024-05-29T13:59:19Z")

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Hello everyone, I am trying to segment multiple structures in an abdominal ct. There are 5 structures that I would like marked individually: Psoas muscle, Other skeletal muscle, Subcutaeous fat, intramuscular fat and vi…

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## [Bone Segmentation for MRI scans](https://discourse.slicer.org/t/bone-segmentation-for-mri-scans/36381)

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**Author:** [@BDA](https://discourse.slicer.org/u/BDA)\
**Replies:** 4\
**Last updated:** [May 29, 2024, 11:56am UTC](https://discourse.slicer.org/t/bone-segmentation-for-mri-scans/36381 "2024-05-29T11:56:04Z")

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Operating system: windows Slicer version: 5.6.2 Expected behavior: creating 3D bone models from MR images Actual behavior: I want to create 3D bone models from MRI scans…I have MR images of the shoulder and knee regi…

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## [Measuring distance between 2 landmarks](https://discourse.slicer.org/t/measuring-distance-between-2-landmarks/36451)

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**Author:** [@NeginRz](https://discourse.slicer.org/u/NeginRz)\
**Replies:** 1\
**Last updated:** [May 29, 2024, 1:42am UTC](https://discourse.slicer.org/t/measuring-distance-between-2-landmarks/36451 "2024-05-29T01:42:10Z")

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Hi all, Im working on a project where I need to measure the distance on between 2 anatomical landmarks without having to slice my microCT 3D samples. I would like to avoid slicing because my landmarks are not all in the …

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## [How to Integrate RTSS(RT structure)-DICOM Volume into DICOM Images for Segmentation](https://discourse.slicer.org/t/how-to-integrate-rtss-rt-structure-dicom-volume-into-dicom-images-for-segmentation/36438)

<div class="topic-metadata">

**Author:** [@youngchanseo](https://discourse.slicer.org/u/youngchanseo)\
**Replies:** 0\
**Last updated:** [May 28, 2024, 3:32pm UTC](https://discourse.slicer.org/t/how-to-integrate-rtss-rt-structure-dicom-volume-into-dicom-images-for-segmentation/36438 "2024-05-28T15:32:06Z")

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I would like to express my gratitude to the developers who made these good programs publicly available. I have one more question. As far as I know, the RTSS-DICOM (RT structure) file does not include MR image or CT ima…

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## [Import RTSS-DICOM files (Already SlicerRT is Installed)](https://discourse.slicer.org/t/import-rtss-dicom-files-already-slicerrt-is-installed/36409)

<div class="topic-metadata">

**Author:** [@youngchanseo](https://discourse.slicer.org/u/youngchanseo)\
**Replies:** 4\
**Last updated:** [May 28, 2024, 11:12am UTC](https://discourse.slicer.org/t/import-rtss-dicom-files-already-slicerrt-is-installed/36409 "2024-05-28T11:12:37Z")

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I want to import DICOM-RTSS files, and then want to convert to DICOM seg format. But there is something error that i can see in the python script, "Python 3.9.10 (main, May 19 2024, 23:18:48) \[MSC v.1939 64 bit (A…

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## [Segmentation of aortic branches : how would you do it?](https://discourse.slicer.org/t/segmentation-of-aortic-branches-how-would-you-do-it/36435)

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**Author:** [@ThomasHusson](https://discourse.slicer.org/u/ThomasHusson)\
**Replies:** 0\
**Last updated:** [May 28, 2024, 2:06pm UTC](https://discourse.slicer.org/t/segmentation-of-aortic-branches-how-would-you-do-it/36435 "2024-05-28T14:06:16Z")

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Hello everyone ! I’m looking to segment aortic, and especially mesenteric vessels from post-op CT scans after colectomy. My senior researcher wants me to do something like this : On a CT scan with similar constrats…

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## [The LSA value keeps changing and the images are disappearing ](https://discourse.slicer.org/t/the-lsa-value-keeps-changing-and-the-images-are-disappearing/36431)

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**Author:** [@Aparnabhasin81](https://discourse.slicer.org/u/Aparnabhasin81)\
**Replies:** 1\
**Last updated:** [May 28, 2024, 12:55pm UTC](https://discourse.slicer.org/t/the-lsa-value-keeps-changing-and-the-images-are-disappearing/36431 "2024-05-28T12:55:06Z")

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Operating system:windows Slicer version:5.7.0 Expected behavior:the images are seen normally Actual behavior: when I try to move back and forth to the next image, the LSA value bar shift automatically and the images d…

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## [Is Slicer able to load large images (\> 2^31 voxels)?](https://discourse.slicer.org/t/is-slicer-able-to-load-large-images-2-31-voxels/36414)

<div class="topic-metadata">

**Author:** [@dyollb](https://discourse.slicer.org/u/dyollb)\
**Replies:** 3\
**Last updated:** [May 28, 2024, 7:38am UTC](https://discourse.slicer.org/t/is-slicer-able-to-load-large-images-2-31-voxels/36414 "2024-05-28T07:38:43Z")

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I was trying to load an image (labelfield) with shape (566, 1081, 3597) in Slicer 5.6.2. Note: 566 \* 1081 \* 3597 \> 2^31 When the segmentation is loaded, I get no error message and it is shown in the Data/Scene explorer…

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## [Python segmentation conversion - specifying geometry for binary labelmap](https://discourse.slicer.org/t/python-segmentation-conversion-specifying-geometry-for-binary-labelmap/36364)

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**Author:** [@LRAnti](https://discourse.slicer.org/u/LRAnti)\
**Replies:** 6\
**Last updated:** [May 28, 2024, 3:05am UTC](https://discourse.slicer.org/t/python-segmentation-conversion-specifying-geometry-for-binary-labelmap/36364 "2024-05-28T03:05:00Z")

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Operating system: Windows Slicer version: 5.2.2 Hello! I’m trying to alter an existing python script which converts segmentations from an RT Struct dataset to binary labelmaps for export as stls. I’ve found that when I…

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## [ can 3D Slicer generate mapping data to assign material properties?](https://discourse.slicer.org/t/can-3d-slicer-generate-mapping-data-to-assign-material-properties/36422)

<div class="topic-metadata">

**Author:** [@jj\_J](https://discourse.slicer.org/u/jj_J)\
**Replies:** 1\
**Last updated:** [May 27, 2024, 5:42pm UTC](https://discourse.slicer.org/t/can-3d-slicer-generate-mapping-data-to-assign-material-properties/36422 "2024-05-27T17:42:45Z")

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Hello, I am a beginner who has recently started using 3D Slicer. I am trying to create a bone model for fatigue analysis in FEM, and I need to separate the cortical and cancellous bone to assign different material proper…

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