# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=192

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

**Page:** 193

---

## [How to measure the diameters of ROI?](https://discourse.slicer.org/t/how-to-measure-the-diameters-of-roi/26377)

<div class="topic-metadata">

**Author:** [@Thomas0086](https://discourse.slicer.org/u/Thomas0086)\
**Replies:** 1\
**Last updated:** [December 1, 2022, 6:23am UTC](https://discourse.slicer.org/t/how-to-measure-the-diameters-of-roi/26377 "2022-12-01T06:23:53Z")

</div>

Hello! I have draw a 3D roi of a cancer leision, how to measure the max-diameters in three dimensions?

---

## [Why everytime i have to perform save](https://discourse.slicer.org/t/why-everytime-i-have-to-perform-save/26380)

<div class="topic-metadata">

**Author:** [@ssv](https://discourse.slicer.org/u/ssv)\
**Replies:** 1\
**Last updated:** [December 1, 2022, 6:22am UTC](https://discourse.slicer.org/t/why-everytime-i-have-to-perform-save/26380 "2022-12-01T06:22:54Z")

</div>

Hello All, I am looking for autosave functionality in slicer because what happen if power cut and i did not save my work. Can we use autosave in parallel thread without interrupting the work ? if yes then how ? Another…

---

## [Apply and save a transformation on an mha file](https://discourse.slicer.org/t/apply-and-save-a-transformation-on-an-mha-file/26499)

<div class="topic-metadata">

**Author:** [@rggelel](https://discourse.slicer.org/u/rggelel)\
**Replies:** 1\
**Last updated:** [December 1, 2022, 6:00am UTC](https://discourse.slicer.org/t/apply-and-save-a-transformation-on-an-mha-file/26499 "2022-12-01T06:00:52Z")

</div>

Hello everyone, I have a question about the mha file. I have an mha file that has a basic transform written in the file. But, I would like to change this transform with another one and save it in the file. Do you know a…

---

## [Looking for dataset for radiomics feature based classification](https://discourse.slicer.org/t/looking-for-dataset-for-radiomics-feature-based-classification/26496)

<div class="topic-metadata">

**Author:** [@Devesh](https://discourse.slicer.org/u/Devesh)\
**Replies:** 3\
**Last updated:** [December 1, 2022, 5:37am UTC](https://discourse.slicer.org/t/looking-for-dataset-for-radiomics-feature-based-classification/26496 "2022-12-01T05:37:31Z")

</div>

Hello everyone, I am a Computer science college student and new to radiomics and medical science. I want to build a radiomics feature-based classifier. I have to take CT scans Dicom images. Firstly, I found a dataset N…

---

## [Install extensions](https://discourse.slicer.org/t/install-extensions/26528)

<div class="topic-metadata">

**Author:** [@Mohamed1](https://discourse.slicer.org/u/Mohamed1)\
**Replies:** 1\
**Last updated:** [December 1, 2022, 4:45am UTC](https://discourse.slicer.org/t/install-extensions/26528 "2022-12-01T04:45:17Z")

</div>

Hey dears 3D slicer supporters First of all thank you all for your tremendous support. today I want to ask about the tissueSegmentation extension, I have already installed it, and once I go to choose it from the module…

---

## [Calculating vector trigeminal nerve](https://discourse.slicer.org/t/calculating-vector-trigeminal-nerve/26501)

<div class="topic-metadata">

**Author:** [@maudboreel](https://discourse.slicer.org/u/maudboreel)\
**Replies:** 1\
**Last updated:** [December 1, 2022, 4:06am UTC](https://discourse.slicer.org/t/calculating-vector-trigeminal-nerve/26501 "2022-12-01T04:06:50Z")

</div>

For a research project, I am segmenting vestibular schwannomas with the neighbouring trigeminal nerve. The vector of the nerve changes of the years because of mass effect of the vestibular schwannoma. Is there a way to c…

---

## [Contrast Control in DRR Generation Module](https://discourse.slicer.org/t/contrast-control-in-drr-generation-module/26527)

<div class="topic-metadata">

**Author:** [@fieldr4](https://discourse.slicer.org/u/fieldr4)\
**Replies:** 0\
**Last updated:** [December 1, 2022, 4:01am UTC](https://discourse.slicer.org/t/contrast-control-in-drr-generation-module/26527 "2022-12-01T04:01:06Z")

</div>

I am attempting to create clinical-quality simulated XRs of the lumbar spine using the DRR Generation module. Unfortunately, my application prevents me from using the volume renderer for DRR generation. I have selected …

---

## [How to use Segment Editor Margin Effect from Python script](https://discourse.slicer.org/t/how-to-use-segment-editor-margin-effect-from-python-script/26512)

<div class="topic-metadata">

**Author:** [@Caetox](https://discourse.slicer.org/u/Caetox)\
**Replies:** 1\
**Last updated:** [December 1, 2022, 2:59am UTC](https://discourse.slicer.org/t/how-to-use-segment-editor-margin-effect-from-python-script/26512 "2022-12-01T02:59:54Z")

</div>

I am trying to grow segments with the margin effect. I have a segmentation with 5 segments, all segments are supposed to grow by 1mm (with overlap). This is how I use it in my script: segmentEditorWidget = slic…

---

## [Quantifying adjacent/touching segmentations-areas](https://discourse.slicer.org/t/quantifying-adjacent-touching-segmentations-areas/26477)

<div class="topic-metadata">

**Author:** [@JonatanS](https://discourse.slicer.org/u/JonatanS)\
**Replies:** 6\
**Last updated:** [December 1, 2022, 12:47am UTC](https://discourse.slicer.org/t/quantifying-adjacent-touching-segmentations-areas/26477 "2022-12-01T00:47:00Z")

</div>

Hi all, I need some assistance regarding quantifying the surface areas of my segmentations. I have several segmentations of structures in close proximity and in certain places physical contact with oneanother. Is there …

---

## [Stable update notification](https://discourse.slicer.org/t/stable-update-notification/23655)

<div class="topic-metadata">

**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 25\
**Last updated:** [November 30, 2022, 10:22pm UTC](https://discourse.slicer.org/t/stable-update-notification/23655 "2022-11-30T22:22:40Z")

</div>

I brought his up earlier on the forum. For stable releases, we need to have a mechanism that will check whether a newer stable version is available and if so, notify the people (with an option to disable that check). I …

---

## [Can't select Volume Sequence as input in DSCMRI Analysis module](https://discourse.slicer.org/t/cant-select-volume-sequence-as-input-in-dscmri-analysis-module/26520)

<div class="topic-metadata">

**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 2\
**Last updated:** [November 30, 2022, 9:21pm UTC](https://discourse.slicer.org/t/cant-select-volume-sequence-as-input-in-dscmri-analysis-module/26520 "2022-11-30T21:21:09Z")

</div>

Back in July, @lassoan submitted a PR which I believe was supposed to allow the replacement of MultiVolumes with Volume Sequences as inputs to CLI modules (see Convert between MultiVolume and Volume Sequence? - #5 by las…

---

## [perpendicular cross sectional area along centerline](https://discourse.slicer.org/t/perpendicular-cross-sectional-area-along-centerline/15556)

<div class="topic-metadata">

**Author:** [@airtech2](https://discourse.slicer.org/u/airtech2)\
**Replies:** 20\
**Last updated:** [November 30, 2022, 8:48pm UTC](https://discourse.slicer.org/t/perpendicular-cross-sectional-area-along-centerline/15556 "2022-11-30T20:48:23Z")

</div>

Operating system: windows Slicer version: 4.11 Expected behavior: Actual behavior: I need a perpendicular cross sectional area along centerline in vessel segmentation model. I can extract centerline using VMTK exten…

---

## [DSCMRI Analysis parameter question](https://discourse.slicer.org/t/dscmri-analysis-parameter-question/26519)

<div class="topic-metadata">

**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 1\
**Last updated:** [November 30, 2022, 8:44pm UTC](https://discourse.slicer.org/t/dscmri-analysis-parameter-question/26519 "2022-11-30T20:44:56Z")

</div>

We’re trying to use the DSCMRI Analysis module to calculate perfusion maps in Slicer, but are having trouble understanding some of the parameters and are getting unreasonable parameter map results. Three questions: Wh…

---

## [US vessel segmentation](https://discourse.slicer.org/t/us-vessel-segmentation/25767)

<div class="topic-metadata">

**Author:** [@whu](https://discourse.slicer.org/u/whu)\
**Replies:** 2\
**Last updated:** [November 30, 2022, 4:35pm UTC](https://discourse.slicer.org/t/us-vessel-segmentation/25767 "2022-11-30T16:35:50Z")

</div>

Hello, Here I used the US device to scan the femoral vein, and get some MP4 videos. The images like this: Now, I want to do the vessel segmetation, especially the traditional method. As suggest, get the magnitu…

---

## [How to do use a segmention tools such as scissor on STL structure](https://discourse.slicer.org/t/how-to-do-use-a-segmention-tools-such-as-scissor-on-stl-structure/26414)

<div class="topic-metadata">

**Author:** [@wael\_telha](https://discourse.slicer.org/u/wael_telha)\
**Replies:** 2\
**Last updated:** [November 30, 2022, 2:43pm UTC](https://discourse.slicer.org/t/how-to-do-use-a-segmention-tools-such-as-scissor-on-stl-structure/26414 "2022-11-30T14:43:23Z")

</div>

HI dear all , First of all let me thanks each and every member here for continuous help and support. they have been of a great help to me today I am here again with a question of how can I use a segmentation tools such…

---

## [Automatic segmentation of breast cancer MRI](https://discourse.slicer.org/t/automatic-segmentation-of-breast-cancer-mri/26481)

<div class="topic-metadata">

**Author:** [@michelegentili](https://discourse.slicer.org/u/michelegentili)\
**Replies:** 1\
**Last updated:** [November 29, 2022, 4:02am UTC](https://discourse.slicer.org/t/automatic-segmentation-of-breast-cancer-mri/26481 "2022-11-29T04:02:21Z")

</div>

Hi, I’m using 3dslicer, and I checked out the tutorials already, but they are mostly on brain MRI. Is there a way to automatically segment a Brest MRI to detect tumor and hopefully its features.

---

## [Save volume rendering as STL file](https://discourse.slicer.org/t/save-volume-rendering-as-stl-file/524)

<div class="topic-metadata">

**Author:** [@jjb](https://discourse.slicer.org/u/jjb)\
**Replies:** 38\
**Last updated:** [October 21, 2021, 2:52pm UTC](https://discourse.slicer.org/t/save-volume-rendering-as-stl-file/524 "2021-10-21T14:52:09Z")

</div>

Hello, I am a new user on 3D slicer. I was using the display preset feature under volume rendering, and I was wondering if there is a way to save what I was viewing as an .stl or 3D printable file. For example, I was v…

---

## [Auto Segmentation error error in 'brats\_mri\_segmentation\_v0.3.8'](https://discourse.slicer.org/t/auto-segmentation-error-error-in-brats-mri-segmentation-v0-3-8/26368)

<div class="topic-metadata">

**Author:** [@platanus](https://discourse.slicer.org/u/platanus)\
**Replies:** 4\
**Last updated:** [November 29, 2022, 1:31am UTC](https://discourse.slicer.org/t/auto-segmentation-error-error-in-brats-mri-segmentation-v0-3-8/26368 "2022-11-29T01:31:32Z")

</div>

Dear all members in 3d slicer Describe the bug \[2022-11-22 10:24:37,281\] \[19036\] \[MainThread\] \[ERROR\] (uvicorn.error:119) - Traceback (most recent call last): File “C:\\Users\\AA\\AppData\\Local\\Programs\\Python\\Python39\\l…

---

## [Extract CenterLine - Start in py](https://discourse.slicer.org/t/extract-centerline-start-in-py/26426)

<div class="topic-metadata">

**Author:** [@lucas\_sd](https://discourse.slicer.org/u/lucas_sd)\
**Replies:** 2\
**Last updated:** [November 28, 2022, 5:42pm UTC](https://discourse.slicer.org/t/extract-centerline-start-in-py/26426 "2022-11-28T17:42:34Z")

</div>

Hi, I have two points and a segmentation and I would like to obtain the center line. I did that using the extension VMTK and now I would like to do this in my phyton script, just like an other part of my process. Can I…

---

## [Slicer not starting at all on laptop](https://discourse.slicer.org/t/slicer-not-starting-at-all-on-laptop/26444)

<div class="topic-metadata">

**Author:** [@NotASlicerUser](https://discourse.slicer.org/u/NotASlicerUser)\
**Replies:** 7\
**Last updated:** [November 28, 2022, 4:33pm UTC](https://discourse.slicer.org/t/slicer-not-starting-at-all-on-laptop/26444 "2022-11-28T16:33:23Z")

</div>

System is running a Ryzen 5 3500u with an integrated graphics card, 8gb of ram and windows 10 x64bit. Slicer will not even start an instance. We’ve tried clean new installs, running as admin but nothing seemingly works.…

---

## [Mice Brain MRI or CT](https://discourse.slicer.org/t/mice-brain-mri-or-ct/26475)

<div class="topic-metadata">

**Author:** [@ylcnkzy](https://discourse.slicer.org/u/ylcnkzy)\
**Replies:** 1\
**Last updated:** [November 28, 2022, 2:40pm UTC](https://discourse.slicer.org/t/mice-brain-mri-or-ct/26475 "2022-11-28T14:40:54Z")

</div>

Dear 3D Slicer Users, I am seeking MRI/CT images (or both) for mice brains. Any ideas or recommendations for a repository? Thanks in advance.

---

## [Screenshot with transparent background in GUI](https://discourse.slicer.org/t/screenshot-with-transparent-background-in-gui/26095)

<div class="topic-metadata">

**Author:** [@mcranium](https://discourse.slicer.org/u/mcranium)\
**Replies:** 5\
**Last updated:** [November 28, 2022, 12:57pm UTC](https://discourse.slicer.org/t/screenshot-with-transparent-background-in-gui/26095 "2022-11-28T12:57:52Z")

</div>

Dear 3D Slicer community, I have a question regarding the option to export screenshots with transparent backgrounds: There is the option to do so using a python snippet (Script repository — 3D Slicer documentation). Wh…

---

## [Uploading MRML Files](https://discourse.slicer.org/t/uploading-mrml-files/26465)

<div class="topic-metadata">

**Author:** [@ThymusTheTrain](https://discourse.slicer.org/u/ThymusTheTrain)\
**Replies:** 1\
**Last updated:** [November 27, 2022, 8:21pm UTC](https://discourse.slicer.org/t/uploading-mrml-files/26465 "2022-11-27T20:21:23Z")

</div>

I’ve received the MRML, .nii.gz, .nrrd files for a segmentation and am trying to upload them to generate a 3D segmentation. Which file(s) do I upload to 3D Slicer and what next module or steps do I select so I can see t…

---

## [Hounsfield unit](https://discourse.slicer.org/t/hounsfield-unit/26458)

<div class="topic-metadata">

**Author:** [@Nima\_Yousefi](https://discourse.slicer.org/u/Nima_Yousefi)\
**Replies:** 1\
**Last updated:** [November 27, 2022, 3:52pm UTC](https://discourse.slicer.org/t/hounsfield-unit/26458 "2022-11-27T15:52:20Z")

</div>

Hi all Currently I’m working on ct scan images and using “Lung ct segmenter” and “Radiomics” extension. How can I convert those images to HU unit?

---

## [The SPHARM output meshes are not in the same coordination system!](https://discourse.slicer.org/t/the-spharm-output-meshes-are-not-in-the-same-coordination-system/26454)

<div class="topic-metadata">

**Author:** [@Moh\_d\_Al-Watary](https://discourse.slicer.org/u/Moh_d_Al-Watary)\
**Replies:** 2\
**Last updated:** [November 27, 2022, 9:56am UTC](https://discourse.slicer.org/t/the-spharm-output-meshes-are-not-in-the-same-coordination-system/26454 "2022-11-27T09:56:22Z")

</div>

Dears in the Slicer forum, wish you all having good life. I am facing a problem as explained below. I am conducting a project in which measuring the mandibular condyle remodeling is a part of it, I am using the SPHARM a…

---

## [VMTK centerline diameter max min module](https://discourse.slicer.org/t/vmtk-centerline-diameter-max-min-module/23169)

<div class="topic-metadata">

**Author:** [@Jacktat](https://discourse.slicer.org/u/Jacktat)\
**Replies:** 5\
**Last updated:** [November 27, 2022, 8:51am UTC](https://discourse.slicer.org/t/vmtk-centerline-diameter-max-min-module/23169 "2022-11-27T08:51:41Z")

</div>

Continuing the discussion from VMTK centreline and metrics: I actually precisely need this functionality, I have succesfully created a segmentation and a centerline. Now, I want to do a complete characterisation of the …

---

## [Slicer program crash suddenly in MacBook](https://discourse.slicer.org/t/slicer-program-crash-suddenly-in-macbook/26453)

<div class="topic-metadata">

**Author:** [@Mohamed1](https://discourse.slicer.org/u/Mohamed1)\
**Replies:** 2\
**Last updated:** [November 27, 2022, 7:14am UTC](https://discourse.slicer.org/t/slicer-program-crash-suddenly-in-macbook/26453 "2022-11-27T07:14:22Z")

</div>

Hey folks! hope your are doing pretty good today. My question is the Slicer program crash every time I use scissor tool and “Slicer quit unexpectedly” Thanks for your help in advance.

---

## [Create a whole body Atlas ](https://discourse.slicer.org/t/create-a-whole-body-atlas/26443)

<div class="topic-metadata">

**Author:** [@F.DIOP](https://discourse.slicer.org/u/F.DIOP)\
**Replies:** 1\
**Last updated:** [November 25, 2022, 6:39pm UTC](https://discourse.slicer.org/t/create-a-whole-body-atlas/26443 "2022-11-25T18:39:10Z")

</div>

I want to have an MRI or Scanner of the whole body in order to create a whole body Atlas

---

## [Segment corpus callosum into more subsegment](https://discourse.slicer.org/t/segment-corpus-callosum-into-more-subsegment/26428)

<div class="topic-metadata">

**Author:** [@bnc0720](https://discourse.slicer.org/u/bnc0720)\
**Replies:** 1\
**Last updated:** [November 25, 2022, 4:29pm UTC](https://discourse.slicer.org/t/segment-corpus-callosum-into-more-subsegment/26428 "2022-11-25T16:29:05Z")

</div>

Hello Everyone, I want to segment the corpus callosum into 5 subsegment to compare them with each other. Is there any solution, trick for that in Slicer3D? I attached a picture to help to illustrate our goal. I did t…

---

## [Grow From Seeds Leaks](https://discourse.slicer.org/t/grow-from-seeds-leaks/26382)

<div class="topic-metadata">

**Author:** [@Vincebisca](https://discourse.slicer.org/u/Vincebisca)\
**Replies:** 13\
**Last updated:** [November 25, 2022, 2:02pm UTC](https://discourse.slicer.org/t/grow-from-seeds-leaks/26382 "2022-11-25T14:02:53Z")

</div>

Hi ! I have noticed a recuring problem when I try to use the Grow From Seeds method. I am trying to segment a hip articulation. For that, I tried Grow From Seeds constrained in a range of intensity. I placed the seeds o…

[Previous page](https://discourse.slicer.org/c/support/11.md?page=191)

[Next page](https://discourse.slicer.org/c/support/11.md?page=193)