# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=362

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

**Page:** 363

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## [Flip volume in the 3d slicer](https://discourse.slicer.org/t/flip-volume-in-the-3d-slicer/3991)

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**Author:** [@sepideh](https://discourse.slicer.org/u/sepideh)\
**Replies:** 5\
**Last updated:** [November 23, 2019, 10:15pm UTC](https://discourse.slicer.org/t/flip-volume-in-the-3d-slicer/3991 "2019-11-23T22:15:04Z")

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Operating system:windows Slicer version:4.5.0-1 Expected behavior: Actual behavior: To whom it may concerns, I need to do a 3d/3d registration using 3d slicer. I have two volumes which one of them is completely flip…

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## [No load after importing DICOM](https://discourse.slicer.org/t/no-load-after-importing-dicom/9279)

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**Author:** [@Leprechaun91](https://discourse.slicer.org/u/Leprechaun91)\
**Replies:** 1\
**Last updated:** [November 23, 2019, 2:30pm UTC](https://discourse.slicer.org/t/no-load-after-importing-dicom/9279 "2019-11-23T14:30:14Z")

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Hey, as you guys can see, the load button is not allowed to be pressed. So i cannot save my files as .nrrd Whats the problem?

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## [Seed grow script , argument size limit](https://discourse.slicer.org/t/seed-grow-script-argument-size-limit/9250)

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**Author:** [@prorai](https://discourse.slicer.org/u/prorai)\
**Replies:** 7\
**Last updated:** [November 22, 2019, 3:06pm UTC](https://discourse.slicer.org/t/seed-grow-script-argument-size-limit/9250 "2019-11-22T15:06:47Z")

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Hi @lassoan Today i was using the seedgrow script , when i’m passing the seeds values , around 100+ seeds XYZ value. app just got crashed without any log info. before i’ve tried with around 80 seeds XYZ values, and it…

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## [Extension Q3DC Slicer 4.11. macOS Catalina](https://discourse.slicer.org/t/extension-q3dc-slicer-4-11-macos-catalina/9246)

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**Author:** [@Fuessinger](https://discourse.slicer.org/u/Fuessinger)\
**Replies:** 5\
**Last updated:** [November 22, 2019, 2:29pm UTC](https://discourse.slicer.org/t/extension-q3dc-slicer-4-11-macos-catalina/9246 "2019-11-22T14:29:53Z")

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Hey, I have installed the extension Q3DC in the extension manager, but if I search the module, I cannot find it. Where is the mistake? Thank you Best regards Marc Anton

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## [Upside down images](https://discourse.slicer.org/t/upside-down-images/9268)

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**Author:** [@prorai](https://discourse.slicer.org/u/prorai)\
**Replies:** 3\
**Last updated:** [November 22, 2019, 2:19pm UTC](https://discourse.slicer.org/t/upside-down-images/9268 "2019-11-22T14:19:25Z")

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Hello, Why slicer reads images upside down, as my Dicom scan images are upside down in real , but when i open this in slicer it always flips it. how can i set to open the images\\scans as it is? Actual image:- imag…

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## [Model scalar display settings reverted from "manual" to "auto" when saving/loading scene](https://discourse.slicer.org/t/model-scalar-display-settings-reverted-from-manual-to-auto-when-saving-loading-scene/9264)

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**Author:** [@stephan](https://discourse.slicer.org/u/stephan)\
**Replies:** 1\
**Last updated:** [November 22, 2019, 3:57am UTC](https://discourse.slicer.org/t/model-scalar-display-settings-reverted-from-manual-to-auto-when-saving-loading-scene/9264 "2019-11-22T03:57:03Z")

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Hi, it looks like this bug: https://issues.slicer.org/view.php?id=4464 has been re-introduced recently. It had been fixed in r27208, but when I installed the current nightly (r28643) I found the same issue as had been r…

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## [Can Slicer utilise multiple cores on linux?](https://discourse.slicer.org/t/can-slicer-utilise-multiple-cores-on-linux/9240)

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**Author:** [@pll\_llq](https://discourse.slicer.org/u/pll_llq)\
**Replies:** 5\
**Last updated:** [November 21, 2019, 9:52pm UTC](https://discourse.slicer.org/t/can-slicer-utilise-multiple-cores-on-linux/9240 "2019-11-21T21:52:39Z")

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Hi, I have a 40 GB NRRD that I need to work with. Currently, when I ask Slicer to load this volume it takes forever (over 15 minutes) and fails from time to time. I see that Slicer utilises only 1 out of the 14 cores and…

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## [Converting a surface in 3D into a 2D surface](https://discourse.slicer.org/t/converting-a-surface-in-3d-into-a-2d-surface/9255)

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**Author:** [@BreadBoxGuy](https://discourse.slicer.org/u/BreadBoxGuy)\
**Replies:** 1\
**Last updated:** [November 21, 2019, 7:01pm UTC](https://discourse.slicer.org/t/converting-a-surface-in-3d-into-a-2d-surface/9255 "2019-11-21T19:01:04Z")

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I’m new to slicer. I am looking to create a patch for a hole on a 3d segmentation and then create a 2D representation of that patch which can be measured so I can make a physical patch in real life that will fit. Is some…

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## [CT head data set contribution](https://discourse.slicer.org/t/ct-head-data-set-contribution/80)

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**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 4\
**Last updated:** [April 12, 2017, 4:58pm UTC](https://discourse.slicer.org/t/ct-head-data-set-contribution/80 "2017-04-12T16:58:34Z")

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I've received an offer from someone for contributing his own head CT into the Slicer sample data sets. Is there anything special to do, or I can just anonymize, convert to nrrd, and upload?

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## [PkModeling tutorial](https://discourse.slicer.org/t/pkmodeling-tutorial/9257)

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**Author:** [@madeline](https://discourse.slicer.org/u/madeline)\
**Replies:** 3\
**Last updated:** [November 21, 2019, 5:47pm UTC](https://discourse.slicer.org/t/pkmodeling-tutorial/9257 "2019-11-21T17:47:03Z")

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## [Register MRI-DWI to CT](https://discourse.slicer.org/t/register-mri-dwi-to-ct/9244)

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**Author:** [@E.M.Lam](https://discourse.slicer.org/u/E.M.Lam)\
**Replies:** 7\
**Last updated:** [November 21, 2019, 3:29pm UTC](https://discourse.slicer.org/t/register-mri-dwi-to-ct/9244 "2019-11-21T15:29:36Z")

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Hello! I want to register a DWI to a CT image but I cannot select the DWI for general registration because it’s in the wrong node. Is there a possibility to use general registration anyhow?

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## [Scissors tool in segment editor](https://discourse.slicer.org/t/scissors-tool-in-segment-editor/9245)

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**Author:** [@BreadBoxGuy](https://discourse.slicer.org/u/BreadBoxGuy)\
**Replies:** 1\
**Last updated:** [November 21, 2019, 12:46pm UTC](https://discourse.slicer.org/t/scissors-tool-in-segment-editor/9245 "2019-11-21T12:46:01Z")

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I have a hollow model, and I would like to remove part of the wall so I can see the inside surface of the structure. Currently, I’m using the erase tool to remove part of the wall but using the scissor tool seems to be q…

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## [Discordant shape features](https://discourse.slicer.org/t/discordant-shape-features/9229)

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**Author:** [@MichaelMoran96](https://discourse.slicer.org/u/MichaelMoran96)\
**Replies:** 0\
**Last updated:** [November 20, 2019, 1:12pm UTC](https://discourse.slicer.org/t/discordant-shape-features/9229 "2019-11-20T13:12:05Z")

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Hi, I am testing pyradiomic feature repeatability of all seven feature classes(Shape, First-order and 5 Texture features) between different CT images. The phantom i use is a CIRS electron density phantom with 16 solid i…

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## [4dv file, error message](https://discourse.slicer.org/t/4dv-file-error-message/9155)

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**Author:** [@floppy](https://discourse.slicer.org/u/floppy)\
**Replies:** 8\
**Last updated:** [November 19, 2019, 7:32pm UTC](https://discourse.slicer.org/t/4dv-file-error-message/9155 "2019-11-19T19:32:11Z")

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hello, i’m really a newbie. i installed slicer and just wanted to open a .4dv file which my doctor gave me. i get this error massage, any suggestions what i can do? “bool \_\_cdecl qSlicerScalarOverlayReader::load(const …

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## [New feature: Histogram for setting threshold range in Segment Editor](https://discourse.slicer.org/t/new-feature-histogram-for-setting-threshold-range-in-segment-editor/9221)

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**Author:** [@Sunderlandkyl](https://discourse.slicer.org/u/Sunderlandkyl)\
**Replies:** 1\
**Last updated:** [November 19, 2019, 7:21pm UTC](https://discourse.slicer.org/t/new-feature-histogram-for-setting-threshold-range-in-segment-editor/9221 "2019-11-19T19:21:12Z")

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In the latest 3D Slicer 4.11.0 releases, the Threshold effect in the Segment Editor module now includes the option to specify the minimum and maximum thresholds based on the histogram of a region of interest in the slice…

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## [Volume clip with model saving](https://discourse.slicer.org/t/volume-clip-with-model-saving/9216)

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**Author:** [@keesh](https://discourse.slicer.org/u/keesh)\
**Replies:** 1\
**Last updated:** [November 19, 2019, 1:28pm UTC](https://discourse.slicer.org/t/volume-clip-with-model-saving/9216 "2019-11-19T13:28:34Z")

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Hello, I using 3D Slicer 4.10.2 to crop a CT abdominal Nifti volume for testing a deep learning model. I have downloaded and installed the VolumeClip extension. I select some options like Outside fill value = -1000, e…

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## [New module: Texts](https://discourse.slicer.org/t/new-module-texts/9196)

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**Author:** [@Sunderlandkyl](https://discourse.slicer.org/u/Sunderlandkyl)\
**Replies:** 0\
**Last updated:** [November 18, 2019, 6:16pm UTC](https://discourse.slicer.org/t/new-module-texts/9196 "2019-11-18T18:16:33Z")

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We have added a new module (Texts) to recent Slicer Preview Releases (4.11) that allows storage and simple viewing of editing any text files in the scene (custom metadata files, configuration files, etc.) For users: -…

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## [How to get dicom data for RTDose volume](https://discourse.slicer.org/t/how-to-get-dicom-data-for-rtdose-volume/9032)

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**Author:** [@dominicrushforth](https://discourse.slicer.org/u/dominicrushforth)\
**Replies:** 2\
**Last updated:** [November 18, 2019, 5:02pm UTC](https://discourse.slicer.org/t/how-to-get-dicom-data-for-rtdose-volume/9032 "2019-11-18T17:02:49Z")

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I have some code that saves images as RTDose files using the DicomRtImportExportPlugin. When these files are reloaded I want to be able to read the dicom tags but the imported volume does not have the attribute DICOM.in…

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## [Compressed video support in Slicer](https://discourse.slicer.org/t/compressed-video-support-in-slicer/9194)

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**Author:** [@Sunderlandkyl](https://discourse.slicer.org/u/Sunderlandkyl)\
**Replies:** 0\
**Last updated:** [November 18, 2019, 3:57pm UTC](https://discourse.slicer.org/t/compressed-video-support-in-slicer/9194 "2019-11-18T15:57:42Z")

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Compressed video support for 3D Slicer is available in both the 4.10.2 and 4.11.0 releases. For users: Requires Sequences, SlicerOpenIGTLink and SlicerIGSIO extensions Video recording and playback Save and load MKV f…

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## [Longitudinal registration image changes and standardisation](https://discourse.slicer.org/t/longitudinal-registration-image-changes-and-standardisation/9189)

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**Author:** [@RadioQuest](https://discourse.slicer.org/u/RadioQuest)\
**Replies:** 1\
**Last updated:** [November 18, 2019, 2:56pm UTC](https://discourse.slicer.org/t/longitudinal-registration-image-changes-and-standardisation/9189 "2019-11-18T14:56:22Z")

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Hi… I am working on longitudinal brain images in a pediatric population to analysis change in texture in different parts of the brain. These scans at later time points are registered with the initial scan to enable the…

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## [Installing SlicerFab 'problems'](https://discourse.slicer.org/t/installing-slicerfab-problems/9192)

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**Author:** [@STUDIO\_FREDERIK\_DE\_W](https://discourse.slicer.org/u/STUDIO_FREDERIK_DE_W)\
**Replies:** 1\
**Last updated:** [November 18, 2019, 2:47pm UTC](https://discourse.slicer.org/t/installing-slicerfab-problems/9192 "2019-11-18T14:47:43Z")

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Hi, My name is Fred and new to the 3DSlicer community, so hello y’all! The first ‘problem’ i ran into is installing Slicerfab ( mac, mojave). I followed the guidelines and tried several ways to install the extension bu…

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## [Ctrl + W Shortcut Closes Slicer ](https://discourse.slicer.org/t/ctrl-w-shortcut-closes-slicer/9161)

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**Author:** [@Joshegol24](https://discourse.slicer.org/u/Joshegol24)\
**Replies:** 2\
**Last updated:** [November 18, 2019, 2:30pm UTC](https://discourse.slicer.org/t/ctrl-w-shortcut-closes-slicer/9161 "2019-11-18T14:30:52Z")

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Operating system: CentOS 7 Slicer version: 4.10.2 Expected behavior: Ctrl + W should clear the scene that I have loaded in Slicer. Actual behavior: Ctrl + W closes out of Slicer completely, instead of just closing the…

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## [Not working "DWI Component"](https://discourse.slicer.org/t/not-working-dwi-component/4793)

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**Author:** [@Ekaterina](https://discourse.slicer.org/u/Ekaterina)\
**Replies:** 21\
**Last updated:** [November 18, 2019, 12:59pm UTC](https://discourse.slicer.org/t/not-working-dwi-component/4793 "2019-11-18T12:59:53Z")

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Operating system: MacOS High Sierra 10.13.6 Slicer version: 4.81 Expected behavior: I was hoping everything would be easy:-) Actual behavior: Good day! Please help in my situation: I have DWI images in DICOM. In th…

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## [Virtual memory vs optane memory mode](https://discourse.slicer.org/t/virtual-memory-vs-optane-memory-mode/9184)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 0\
**Last updated:** [November 18, 2019, 5:53am UTC](https://discourse.slicer.org/t/virtual-memory-vs-optane-memory-mode/9184 "2019-11-18T05:53:07Z")

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I have been reading about Intel’s optane memory, particularly their “memory mode” which transiently maps the optane memory as DRAM. This might be a cost-effective solution for people working on very large volumes wi…

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## [How to calculate an angle?](https://discourse.slicer.org/t/how-to-calculate-an-angle/8999)

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**Author:** [@Romeo\_Guevara](https://discourse.slicer.org/u/Romeo_Guevara)\
**Replies:** 13\
**Last updated:** [November 18, 2019, 4:25am UTC](https://discourse.slicer.org/t/how-to-calculate-an-angle/8999 "2019-11-18T04:25:44Z")

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i need to now, how to calculate an angle in the last version of slicer, thanls

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## [Refine brain vessel segmentation](https://discourse.slicer.org/t/refine-brain-vessel-segmentation/5704)

<div class="topic-metadata">

**Author:** [@albert94](https://discourse.slicer.org/u/albert94)\
**Replies:** 1\
**Last updated:** [November 17, 2019, 8:49pm UTC](https://discourse.slicer.org/t/refine-brain-vessel-segmentation/5704 "2019-11-17T20:49:10Z")

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Hi all, I am trying to segment cerebral vessels from CT and MR images. First I apply swiss skull stripper to the volume, and then I threhold the immediate result by Threshold Scalar Volume module. Now I get the followin…

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## [White sphere in center of 3d view](https://discourse.slicer.org/t/white-sphere-in-center-of-3d-view/9176)

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**Author:** [@Amine](https://discourse.slicer.org/u/Amine)\
**Replies:** 1\
**Last updated:** [November 16, 2019, 2:39pm UTC](https://discourse.slicer.org/t/white-sphere-in-center-of-3d-view/9176 "2019-11-16T14:39:41Z")

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slicer version 4.10.1 (issue only happens with slicelet) Hi, whenever i run this slicelet i get a white sphere at the center of the 3d view, it is small but interferes with small models, is there any way to get rid of i…

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## [Direct DICOM image download from ultrasound system](https://discourse.slicer.org/t/direct-dicom-image-download-from-ultrasound-system/9098)

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**Author:** [@jimmyt8408](https://discourse.slicer.org/u/jimmyt8408)\
**Replies:** 2\
**Last updated:** [November 16, 2019, 2:33pm UTC](https://discourse.slicer.org/t/direct-dicom-image-download-from-ultrasound-system/9098 "2019-11-16T14:33:25Z")

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I just logged on and need information before downloading 3DSlicer. I have 4 very old Siemens Acuson Sequoia systems in our research lab that have issues with DVD’s and our hospital does not want us to use their PACS syst…

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## [Does importing .jpg sequence instead of .png reduce ram requirements?](https://discourse.slicer.org/t/does-importing-jpg-sequence-instead-of-png-reduce-ram-requirements/9173)

<div class="topic-metadata">

**Author:** [@NoobForSlicer](https://discourse.slicer.org/u/NoobForSlicer)\
**Replies:** 1\
**Last updated:** [November 16, 2019, 1:24pm UTC](https://discourse.slicer.org/t/does-importing-jpg-sequence-instead-of-png-reduce-ram-requirements/9173 "2019-11-16T13:24:59Z")

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In other words, does Slicer 3D dismantle those images and insert them pixel by pixel with 8 bit channels (24 bits total) irrelevant of what format was used? Or does Slicer somehow preserve the format and thus Jpg sequenc…

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## [Qt Path - Configuration for Building Slicer](https://discourse.slicer.org/t/qt-path-configuration-for-building-slicer/9171)

<div class="topic-metadata">

**Author:** [@marie](https://discourse.slicer.org/u/marie)\
**Replies:** 3\
**Last updated:** [November 15, 2019, 9:46pm UTC](https://discourse.slicer.org/t/qt-path-configuration-for-building-slicer/9171 "2019-11-15T21:46:59Z")

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Hi there! I would like to build Slicer on Ubuntu 19.10. I installed Qt5 via: $ sudo apt install qt5-default Now I am struggling with the following command (see Documentation): cmake -DCMAKE\_BUILD\_TYPE:STRING=Debug -D…

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