# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=426

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

**Page:** 427

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## [Trouble saving segment as an STL](https://discourse.slicer.org/t/trouble-saving-segment-as-an-stl/654)

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**Author:** [@KateOxley](https://discourse.slicer.org/u/KateOxley)\
**Replies:** 10\
**Last updated:** [April 17, 2018, 12:46pm UTC](https://discourse.slicer.org/t/trouble-saving-segment-as-an-stl/654 "2018-04-17T12:46:37Z")

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I’m having trouble saving a segment as an STL. When I try to save, I’d expect to see a file called “Intervertebral Disc 1.vtk” that I could save as an STL, but I am not seeing that option. What am I doing wrong? Thanks f…

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## [Is it possible to use 3d\_slicer libraries in my own program](https://discourse.slicer.org/t/is-it-possible-to-use-3d-slicer-libraries-in-my-own-program/2605)

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**Author:** [@rasoul](https://discourse.slicer.org/u/rasoul)\
**Replies:** 0\
**Last updated:** [April 17, 2018, 6:35am UTC](https://discourse.slicer.org/t/is-it-possible-to-use-3d-slicer-libraries-in-my-own-program/2605 "2018-04-17T06:35:30Z")

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Hi every one I am new to slicer so my question maybe a beginner one, I wanna use libraries of slicer in c++ to use its benefits in my image processing program. For example I wanna have an Interface like what it is ava…

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## [Import DICOM missing slices](https://discourse.slicer.org/t/import-dicom-missing-slices/2594)

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**Author:** [@Joanna](https://discourse.slicer.org/u/Joanna)\
**Replies:** 1\
**Last updated:** [April 17, 2018, 3:55am UTC](https://discourse.slicer.org/t/import-dicom-missing-slices/2594 "2018-04-17T03:55:12Z")

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Hi, I have 753 DICOM files and want to import into 3DSlicer. But only 516 slices are imported successfully. And the volume information especially slice number and slice thickness of “Z” dimention is incorrect (using vol…

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## [Smoothing kernel size, Margin size in Segment editor](https://discourse.slicer.org/t/smoothing-kernel-size-margin-size-in-segment-editor/2579)

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**Author:** [@MancaZerovnik](https://discourse.slicer.org/u/MancaZerovnik)\
**Replies:** 3\
**Last updated:** [April 17, 2018, 3:12am UTC](https://discourse.slicer.org/t/smoothing-kernel-size-margin-size-in-segment-editor/2579 "2018-04-17T03:12:58Z")

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I am doing segmentation of volume with Segment editor. I can’t use margin tool. Beside margin size input I get warning “margin too small” but I can’t make it big enough, because the limit of the input field is 9999.000m…

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## [Input limits for transform display](https://discourse.slicer.org/t/input-limits-for-transform-display/2603)

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**Author:** [@david-hoffman](https://discourse.slicer.org/u/david-hoffman)\
**Replies:** 1\
**Last updated:** [April 17, 2018, 2:16am UTC](https://discourse.slicer.org/t/input-limits-for-transform-display/2603 "2018-04-17T02:16:37Z")

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Operating system: Windows 10 Pro 1709 build 16299.309 Slicer version: 4.8.1 Expected behavior: Any numerical input allowed Actual behavior: input limited to numbers greater than 0.01 I have transform files that are o…

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## [Deleting annotation ruler lines and adding circle annotations](https://discourse.slicer.org/t/deleting-annotation-ruler-lines-and-adding-circle-annotations/2598)

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**Author:** [@monicagoodlett](https://discourse.slicer.org/u/monicagoodlett)\
**Replies:** 1\
**Last updated:** [April 16, 2018, 2:25pm UTC](https://discourse.slicer.org/t/deleting-annotation-ruler-lines-and-adding-circle-annotations/2598 "2018-04-16T14:25:44Z")

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Is there a way to delete lines after creating them? I think there is one but I can not find it. and Is there a way to create circles or non-linear lines using the tool?

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## [Slicer layout not correct on Mac](https://discourse.slicer.org/t/slicer-layout-not-correct-on-mac/2574)

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**Author:** [@priya.vada4](https://discourse.slicer.org/u/priya.vada4)\
**Replies:** 4\
**Last updated:** [April 16, 2018, 2:19pm UTC](https://discourse.slicer.org/t/slicer-layout-not-correct-on-mac/2574 "2018-04-16T14:19:00Z")

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Hi I recently built Slicer 4.8.1 on my Mac from source. When I start Slicer on my external display, the layout looks correct. However, when I start Slicer on my Macbook without an external display, the layout is distort…

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## [Segmentation of CT scan loaded from large .tiff/.nrrd](https://discourse.slicer.org/t/segmentation-of-ct-scan-loaded-from-large-tiff-nrrd/2545)

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**Author:** [@r\_baumgarten](https://discourse.slicer.org/u/r_baumgarten)\
**Replies:** 9\
**Last updated:** [April 16, 2018, 12:21pm UTC](https://discourse.slicer.org/t/segmentation-of-ct-scan-loaded-from-large-tiff-nrrd/2545 "2018-04-16T12:21:26Z")

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Hello, first of sorry, I know that this topic has been answered before, but the solutions don’t work for me. Version: 3D Slicer 4.8.1 Windows 10 I have a CT scan in individual .tiff images. If I try this method Docum…

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## [Is there any way of capturing variation of density in vertebrae for FEA?](https://discourse.slicer.org/t/is-there-any-way-of-capturing-variation-of-density-in-vertebrae-for-fea/2586)

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**Author:** [@deepmech](https://discourse.slicer.org/u/deepmech)\
**Replies:** 1\
**Last updated:** [April 14, 2018, 4:48am UTC](https://discourse.slicer.org/t/is-there-any-way-of-capturing-variation-of-density-in-vertebrae-for-fea/2586 "2018-04-14T04:48:01Z")

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i want to work on osteoporosis of vertebrae so that its material properties get vary with density of bones. Is there any way to store the variation density of bone in export model.

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## [How to add an article to Slicer database?](https://discourse.slicer.org/t/how-to-add-an-article-to-slicer-database/2582)

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**Author:** [@gerroba](https://discourse.slicer.org/u/gerroba)\
**Replies:** 1\
**Last updated:** [April 13, 2018, 1:11pm UTC](https://discourse.slicer.org/t/how-to-add-an-article-to-slicer-database/2582 "2018-04-13T13:11:55Z")

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Hello Community! We have recently published an article and we’ve used 3D Slicer. Is there any specific Slicer database where I can upload it? It is already on Pubmed (PMID: 29197656). thanks in advance, gerard

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## [Merging volumes - what to do after landmark registration](https://discourse.slicer.org/t/merging-volumes-what-to-do-after-landmark-registration/2580)

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**Author:** [@katharina\_hecker](https://discourse.slicer.org/u/katharina_hecker)\
**Replies:** 1\
**Last updated:** [April 13, 2018, 1:11pm UTC](https://discourse.slicer.org/t/merging-volumes-what-to-do-after-landmark-registration/2580 "2018-04-13T13:11:49Z")

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I wanted to integrate one volume into another one (at a certain position: That is why I was using Landmark registration to align both volumes. It also worked as far as I know. But now I have the problem that When I want …

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## [Simple Region Splitting](https://discourse.slicer.org/t/simple-region-splitting/2498)

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**Author:** [@Steve\_W](https://discourse.slicer.org/u/Steve_W)\
**Replies:** 2\
**Last updated:** [April 13, 2018, 4:47am UTC](https://discourse.slicer.org/t/simple-region-splitting/2498 "2018-04-13T04:47:59Z")

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Hello Slicer Forum! I sort out a number of 3d Prints for orthopaedics and plastics in my hospital. Following tutorials I have been sucessful in making a number of models now using slicer 3d, however I need some help i…

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## [Multiple module panels](https://discourse.slicer.org/t/multiple-module-panels/2569)

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**Author:** [@rhgmn](https://discourse.slicer.org/u/rhgmn)\
**Replies:** 5\
**Last updated:** [April 12, 2018, 10:31pm UTC](https://discourse.slicer.org/t/multiple-module-panels/2569 "2018-04-12T22:31:04Z")

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Hello, I do my best to develop extensions that are modular so that I can use them for many different tasks. However, the division in functionality results in me having to switch modules in the module panel frequently, w…

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## [Rotation not account with brainfit](https://discourse.slicer.org/t/rotation-not-account-with-brainfit/2572)

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**Author:** [@Cyril](https://discourse.slicer.org/u/Cyril)\
**Replies:** 1\
**Last updated:** [April 12, 2018, 7:31pm UTC](https://discourse.slicer.org/t/rotation-not-account-with-brainfit/2572 "2018-04-12T19:31:15Z")

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Hello Slicer Community, We have created CT and MRI numerical phantom to test the accuracy of registration software. With very simple form like an ellispsoide and just two value 0 for the background and 700 for the ellip…

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## [Plus Toolkit + Slicer + Mac OS + Polaris Vicra compatibility](https://discourse.slicer.org/t/plus-toolkit-slicer-mac-os-polaris-vicra-compatibility/2560)

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**Author:** [@banderies](https://discourse.slicer.org/u/banderies)\
**Replies:** 2\
**Last updated:** [April 12, 2018, 7:25pm UTC](https://discourse.slicer.org/t/plus-toolkit-slicer-mac-os-polaris-vicra-compatibility/2560 "2018-04-12T19:25:15Z")

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My lab will be getting a Polaris Vicra shortly, and I am getting ready to set it up with Slicer. We are also getting iMac Pros, and I would like to use one of them with the Vicra and Slicer. However, I am not certain of …

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## [Cerebral vessel segmentation](https://discourse.slicer.org/t/cerebral-vessel-segmentation/2571)

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**Author:** [@Vinny](https://discourse.slicer.org/u/Vinny)\
**Replies:** 3\
**Last updated:** [April 12, 2018, 6:27pm UTC](https://discourse.slicer.org/t/cerebral-vessel-segmentation/2571 "2018-04-12T18:27:44Z")

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Hi, I was wondering if there was a method or a module in 3d Slicer to segment out cerebral vessels (cortical and/or subcortical) from a gado enhanced MR scan and to build a 3d model out of it. Is the VMTKVesselEnhancem…

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## [Errors when converting DICOM to NRRD with DWIConvert](https://discourse.slicer.org/t/errors-when-converting-dicom-to-nrrd-with-dwiconvert/1756)

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**Author:** [@atbauman](https://discourse.slicer.org/u/atbauman)\
**Replies:** 9\
**Last updated:** [April 11, 2018, 7:45pm UTC](https://discourse.slicer.org/t/errors-when-converting-dicom-to-nrrd-with-dwiconvert/1756 "2018-04-11T19:45:37Z")

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I am having difficulty converting DICOM files to nrrd using the DWIConvert module. The following command gives the output below: DWIConvert --inputDicomDirectory /path/to/dicom/files --outputVolume output.nrrd =======…

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## [The program '\[12808\] SlicerApp-real.exe' has exited with code -1073741515 (0xc0000135) 'A dependent dll was not found'.](https://discourse.slicer.org/t/the-program-12808-slicerapp-real-exe-has-exited-with-code-1073741515-0xc0000135-a-dependent-dll-was-not-found/2537)

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**Author:** [@1115](https://discourse.slicer.org/u/1115)\
**Replies:** 2\
**Last updated:** [April 11, 2018, 2:53pm UTC](https://discourse.slicer.org/t/the-program-12808-slicerapp-real-exe-has-exited-with-code-1073741515-0xc0000135-a-dependent-dll-was-not-found/2537 "2018-04-11T14:53:37Z")

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Operating system:Windows 10 Slicer version:4.9 Expected behavior:debug Actual behavior: I compiled and run Slicer, but after restarting the computer, I get the following error: System lost CTKWidgets.dll ,QtCored4.d…

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## [Performing tractography with multiple ROIs](https://discourse.slicer.org/t/performing-tractography-with-multiple-rois/2525)

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**Author:** [@lsmith](https://discourse.slicer.org/u/lsmith)\
**Replies:** 3\
**Last updated:** [April 10, 2018, 6:28pm UTC](https://discourse.slicer.org/t/performing-tractography-with-multiple-rois/2525 "2018-04-10T18:28:53Z")

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Hi! I’m an RA and quite new to 3D slicer. My lab is working on using DTI data to map motor pathways in the brain. We are wanting to define regions of interest in the motor cortex and the brainstem and see the fibers that…

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## [DWIConvert Issue](https://discourse.slicer.org/t/dwiconvert-issue/2554)

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**Author:** [@zjx1805](https://discourse.slicer.org/u/zjx1805)\
**Replies:** 5\
**Last updated:** [April 10, 2018, 5:48pm UTC](https://discourse.slicer.org/t/dwiconvert-issue/2554 "2018-04-10T17:48:49Z")

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I am having some trouble importing dicom files and converting them to dwi. I saw a few threads in the forum on this issue (for example, this, this). I get the same error, which says “itk::ERROR: LoadFromDisk not relevan…

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## [SlicerRT Import Dose Cube](https://discourse.slicer.org/t/slicerrt-import-dose-cube/2546)

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**Author:** [@giancu](https://discourse.slicer.org/u/giancu)\
**Replies:** 7\
**Last updated:** [April 10, 2018, 1:20pm UTC](https://discourse.slicer.org/t/slicerrt-import-dose-cube/2546 "2018-04-10T13:20:34Z")

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Hi everyone. I’m trying to visualize a modified dose cube. I succed in loading it, but the cube is displayed in the original format (like short: from 0 to 65536 values). I am wondering why is the DICOM Tag “(3004,000e)”…

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## [Resampling a 3D CT Image](https://discourse.slicer.org/t/resampling-a-3d-ct-image/618)

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**Author:** [@Ivan\_Hidrovo](https://discourse.slicer.org/u/Ivan_Hidrovo)\
**Replies:** 12\
**Last updated:** [April 10, 2018, 12:08pm UTC](https://discourse.slicer.org/t/resampling-a-3d-ct-image/618 "2018-04-10T12:08:22Z")

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Hello, Can someone please inform me what module I need to use if I want to downsample a 3D CT image of dimensions 592X 592X 560 to be of dimensions 236X 236X 224 ? Thank you, Ivan

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## [Data Probe widget is empty on Linux](https://discourse.slicer.org/t/data-probe-widget-is-empty-on-linux/2528)

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**Author:** [@Fernando](https://discourse.slicer.org/u/Fernando)\
**Replies:** 2\
**Last updated:** [April 10, 2018, 10:08am UTC](https://discourse.slicer.org/t/data-probe-widget-is-empty-on-linux/2528 "2018-04-10T10:08:41Z")

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Hi all, I’ve been getting this error on Linux for a while. Since Linux builds were not available for a while, I waited until a new nightly came up, but the problem is still there. The weird thing is that I also tried on…

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## [Register CT with MRI tutorial](https://discourse.slicer.org/t/register-ct-with-mri-tutorial/2550)

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**Author:** [@shrimanti](https://discourse.slicer.org/u/shrimanti)\
**Replies:** 0\
**Last updated:** [April 9, 2018, 8:08pm UTC](https://discourse.slicer.org/t/register-ct-with-mri-tutorial/2550 "2018-04-09T20:08:08Z")

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Is there any tutorial video for Registration of CT with MRI using 3D Slicer?

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## [Fill holes after threshold-based bone segmentation in CT](https://discourse.slicer.org/t/fill-holes-after-threshold-based-bone-segmentation-in-ct/2478)

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**Author:** [@alessandronavacchia](https://discourse.slicer.org/u/alessandronavacchia)\
**Replies:** 2\
**Last updated:** [April 9, 2018, 8:07pm UTC](https://discourse.slicer.org/t/fill-holes-after-threshold-based-bone-segmentation-in-ct/2478 "2018-04-09T20:07:57Z")

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Hi all, I am segmenting the geometries of femur, tibia, fibula and patella from a CT scan using Threshold effect. What is the best tool to fill the holes inside the segmented cortical layer (see picture below)? I would…

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## [How load diffusionTensorImages from Dicom? ](https://discourse.slicer.org/t/how-load-diffusiontensorimages-from-dicom/2544)

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**Author:** [@ElonKou](https://discourse.slicer.org/u/ElonKou)\
**Replies:** 0\
**Last updated:** [April 9, 2018, 4:02pm UTC](https://discourse.slicer.org/t/how-load-diffusiontensorimages-from-dicom/2544 "2018-04-09T16:02:14Z")

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Operating system : ubuntu 16.04 Slicer version:4.8.1 Expected behavior:Load DTI data from dicom files. Actual behavior: Hi,I am new to 3dSlicer , and I failed to load DTI files which from Hospital’s DVD(from Manufac…

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## [Volumes widget is too wide when there are many decimals](https://discourse.slicer.org/t/volumes-widget-is-too-wide-when-there-are-many-decimals/1434)

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**Author:** [@Fernando](https://discourse.slicer.org/u/Fernando)\
**Replies:** 17\
**Last updated:** [April 9, 2018, 12:06pm UTC](https://discourse.slicer.org/t/volumes-widget-is-too-wide-when-there-are-many-decimals/1434 "2018-04-09T12:06:05Z")

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Title and screenshot image say it all. The module widget takes more than 50% of my screen and I can’t resize it. It says 4 decimals here: https://github.com/Slicer/Slicer/blob/eefeac9286f48552e8418a11f412b2823a09b40…

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## [Offline reconstruction with other devices](https://discourse.slicer.org/t/offline-reconstruction-with-other-devices/2523)

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**Author:** [@Nolwenn](https://discourse.slicer.org/u/Nolwenn)\
**Replies:** 2\
**Last updated:** [April 9, 2018, 6:51am UTC](https://discourse.slicer.org/t/offline-reconstruction-with-other-devices/2523 "2018-04-09T06:51:09Z")

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Hi everyone, I’m a PhD student currently working on ultrasound volume reconstruction and I just found 3DSlicer/SlicerIGT. I tried the tutorials and the results are really impressive. I need your help for the two follow…

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## ["Margin size" and "Shell thickness" are too small for a volume with 0.05 0.05 0.05 spacing](https://discourse.slicer.org/t/margin-size-and-shell-thickness-are-too-small-for-a-volume-with-0-05-0-05-0-05-spacing/2533)

<div class="topic-metadata">

**Author:** [@brhoom](https://discourse.slicer.org/u/brhoom)\
**Replies:** 2\
**Last updated:** [April 7, 2018, 6:18pm UTC](https://discourse.slicer.org/t/margin-size-and-shell-thickness-are-too-small-for-a-volume-with-0-05-0-05-0-05-spacing/2533 "2018-04-07T18:18:36Z")

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I tried the new Segment Editor Hollow effect and the old Margin effect. I can not get good result because the smallest acceptable size and thinness is 0.8 mm (3x3x1 pixels). Why is that?

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## [Automatically create labelmaps for all values of the custom LUT](https://discourse.slicer.org/t/automatically-create-labelmaps-for-all-values-of-the-custom-lut/2534)

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**Author:** [@NaglisR](https://discourse.slicer.org/u/NaglisR)\
**Replies:** 2\
**Last updated:** [April 7, 2018, 5:39pm UTC](https://discourse.slicer.org/t/automatically-create-labelmaps-for-all-values-of-the-custom-lut/2534 "2018-04-07T17:39:32Z")

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Hi, I have a volume that contains only values that are listed in my custom LUT (~70 different values representing anatomical structures): Example: I want to automatically create a labelmap, that would assign the va…

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