# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=420

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

**Page:** 421

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## [Error when install Radiomics extension ](https://discourse.slicer.org/t/error-when-install-radiomics-extension/3236)

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**Author:** [@LGKicon\_NYU](https://discourse.slicer.org/u/LGKicon_NYU)\
**Replies:** 0\
**Last updated:** [June 19, 2018, 10:54pm UTC](https://discourse.slicer.org/t/error-when-install-radiomics-extension/3236 "2018-06-19T22:54:02Z")

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I got “Failed downloading: http://slicer.kitware.com/midas3/download?items=366963” when I try to use Extension Manager to install Radiomics. I am using windows 10 64 bit. Slicer 4.9.0-2018-06-17. Could I download thi…

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## [MRI Data being reformatted](https://discourse.slicer.org/t/mri-data-being-reformatted/3231)

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**Author:** [@ogdenk](https://discourse.slicer.org/u/ogdenk)\
**Replies:** 3\
**Last updated:** [June 19, 2018, 3:51pm UTC](https://discourse.slicer.org/t/mri-data-being-reformatted/3231 "2018-06-19T15:51:06Z")

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Operating system: Win7 Slicer version: 4.8.1 Stable Expected behavior: Would like to see the MRI images in the acquisition planes. The images are from brain scans that are acquired with a rotated acquisition relative…

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## [Integrated Intel Graphics - solution for black screen problem](https://discourse.slicer.org/t/integrated-intel-graphics-solution-for-black-screen-problem/3220)

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**Author:** [@JamesGalea](https://discourse.slicer.org/u/JamesGalea)\
**Replies:** 0\
**Last updated:** [June 18, 2018, 7:09pm UTC](https://discourse.slicer.org/t/integrated-intel-graphics-solution-for-black-screen-problem/3220 "2018-06-18T19:09:53Z")

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Operating system: Windows 10 Slicer version: 4.9.0 Expected behavior: GPU volumetric rendering Actual behavior: Black screen Version 4.9 brings much improvement and refinement with GPU rendering (Ray Casting) especia…

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## [Slicer wiki documentation source section](https://discourse.slicer.org/t/slicer-wiki-documentation-source-section/3211)

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**Author:** [@adamrankin](https://discourse.slicer.org/u/adamrankin)\
**Replies:** 0\
**Last updated:** [June 18, 2018, 2:31pm UTC](https://discourse.slicer.org/t/slicer-wiki-documentation-source-section/3211 "2018-06-18T14:31:57Z")

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Hello all, What do you think of recommending/enforcing a standard section on Slicer extension wiki pages that provide a link to the source code (if existing)? Adam

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## [Performance drop in slicer while receiving openigtlink messages as server](https://discourse.slicer.org/t/performance-drop-in-slicer-while-receiving-openigtlink-messages-as-server/3098)

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**Author:** [@roozbehshams](https://discourse.slicer.org/u/roozbehshams)\
**Replies:** 14\
**Last updated:** [June 18, 2018, 2:17pm UTC](https://discourse.slicer.org/t/performance-drop-in-slicer-while-receiving-openigtlink-messages-as-server/3098 "2018-06-18T14:17:41Z")

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Operating system: Windows 10 Slicer version: 4.8.1 Expected behavior: No significant performance drop (at least in 3D view) while receiving messages. Actual behavior: significant performance drop When using openigtl…

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## [Locator shape of a transform](https://discourse.slicer.org/t/locator-shape-of-a-transform/3151)

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**Author:** [@val.dil](https://discourse.slicer.org/u/val.dil)\
**Replies:** 3\
**Last updated:** [June 16, 2018, 7:16pm UTC](https://discourse.slicer.org/t/locator-shape-of-a-transform/3151 "2018-06-16T19:16:28Z")

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I’m using the OpenIGTlink extension to acquire a transform from a server in real time. In some picture I saw that the locator has a lite blu needle shape, but in my case it appears to me as a cube with 9 points, 8 on th…

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## [Extensions/MatlabBridge: Send transform (4x4 matrix) from Matlab to 3D Slicer](https://discourse.slicer.org/t/extensions-matlabbridge-send-transform-4x4-matrix-from-matlab-to-3d-slicer/3159)

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**Author:** [@katharina\_hecker](https://discourse.slicer.org/u/katharina_hecker)\
**Replies:** 30\
**Last updated:** [June 16, 2018, 4:41pm UTC](https://discourse.slicer.org/t/extensions-matlabbridge-send-transform-4x4-matrix-from-matlab-to-3d-slicer/3159 "2018-06-16T16:41:02Z")

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Hi, I’m beginning to work now with Matlab. I’ve looked over descriptions and questions but some questions are not clear for me yet. So I was wondering if somebody could help me out: I wanted to ask if it is possible to…

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## [Problem to select ROI borders of the Crop VOlume module with the mouse](https://discourse.slicer.org/t/problem-to-select-roi-borders-of-the-crop-volume-module-with-the-mouse/1920)

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**Author:** [@terajnol](https://discourse.slicer.org/u/terajnol)\
**Replies:** 6\
**Last updated:** [June 15, 2018, 9:38pm UTC](https://discourse.slicer.org/t/problem-to-select-roi-borders-of-the-crop-volume-module-with-the-mouse/1920 "2018-06-15T21:38:58Z")

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Operating system: Win 10, 64 bits Slicer version: 4.9.0 2018-01-23 Hi all, I had no problem before to use the Crop volume Module and its ROI. But since this morning, after creating a ROI, it is almost impossible to s…

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## [Tractography export by color ](https://discourse.slicer.org/t/tractography-export-by-color/3191)

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**Author:** [@Nicholas.jacobson](https://discourse.slicer.org/u/Nicholas.jacobson)\
**Replies:** 8\
**Last updated:** [June 15, 2018, 7:40pm UTC](https://discourse.slicer.org/t/tractography-export-by-color/3191 "2018-06-15T19:40:49Z")

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Hello, I’ve got a Tractography file in slicer with numerous colors. I’d like to export the curves with color or export the curves based on a color threshold. The idea with the latter is that I can export numerous files …

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## [Memory Usage Increase in Looped Script](https://discourse.slicer.org/t/memory-usage-increase-in-looped-script/3201)

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**Author:** [@Tom\_Wei](https://discourse.slicer.org/u/Tom_Wei)\
**Replies:** 2\
**Last updated:** [June 15, 2018, 7:07pm UTC](https://discourse.slicer.org/t/memory-usage-increase-in-looped-script/3201 "2018-06-15T19:07:18Z")

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Hello, I’ve written a script that uses slicer.util.loadVolume() to open a scan in each iteration of a loop, and despite using slicer.mrmlScene.RemoveNode() each time, the memory usage still goes up in task manager, sugg…

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## [Segmentation is clipped when exporting to RTstruct](https://discourse.slicer.org/t/segmentation-is-clipped-when-exporting-to-rtstruct/3189)

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**Author:** [@ferhue](https://discourse.slicer.org/u/ferhue)\
**Replies:** 3\
**Last updated:** [June 15, 2018, 4:48pm UTC](https://discourse.slicer.org/t/segmentation-is-clipped-when-exporting-to-rtstruct/3189 "2018-06-15T16:48:20Z")

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Hi, I am importing an STL file (couch, in green) as segmentation on top of a DICOM CT (which has its own contour, in gray). In the attached picture you see the three central CT slices, the CT contour (gray) and the STL …

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## [Segmenting a fractured tibia](https://discourse.slicer.org/t/segmenting-a-fractured-tibia/2764)

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**Author:** [@Itamartz](https://discourse.slicer.org/u/Itamartz)\
**Replies:** 7\
**Last updated:** [June 15, 2018, 10:40am UTC](https://discourse.slicer.org/t/segmenting-a-fractured-tibia/2764 "2018-06-15T10:40:20Z")

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Operating system- Windows 10 Slicer version- 4.8.1 Hello friends, I am trying to segment a fractured tibia for pre-surgical planning. I have been trying the manipulations suggested in previous discussions: Bone seg…

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## [Recording macros in Slicer?](https://discourse.slicer.org/t/recording-macros-in-slicer/3192)

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**Author:** [@Hamburgerfinger](https://discourse.slicer.org/u/Hamburgerfinger)\
**Replies:** 1\
**Last updated:** [June 15, 2018, 5:31am UTC](https://discourse.slicer.org/t/recording-macros-in-slicer/3192 "2018-06-15T05:31:16Z")

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Hi! Does Slicer have a “record macro” function? I can’t find any documentation for this. Thanks!

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## [Is there a way to reduce the CPU usage and reduce the amount of RAM used?](https://discourse.slicer.org/t/is-there-a-way-to-reduce-the-cpu-usage-and-reduce-the-amount-of-ram-used/3181)

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**Author:** [@goetzf](https://discourse.slicer.org/u/goetzf)\
**Replies:** 7\
**Last updated:** [June 14, 2018, 9:58pm UTC](https://discourse.slicer.org/t/is-there-a-way-to-reduce-the-cpu-usage-and-reduce-the-amount-of-ram-used/3181 "2018-06-14T21:58:45Z")

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Operating system: MacOZ 10.13.4 Slicer version: 4.9.0-2018-05-30 Expected behavior: Actual behavior: When I first opened the stack of 547 registered serial section images, the computer was using between 5 and 6 GB RA…

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## [Problem with segmentation of MCA territory on axial view](https://discourse.slicer.org/t/problem-with-segmentation-of-mca-territory-on-axial-view/3138)

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**Author:** [@mag](https://discourse.slicer.org/u/mag)\
**Replies:** 3\
**Last updated:** [June 14, 2018, 9:52pm UTC](https://discourse.slicer.org/t/problem-with-segmentation-of-mca-territory-on-axial-view/3138 "2018-06-14T21:52:11Z")

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Hello, I think I have a similar problem to what described in this post but I don’t understand how to use Crop Volume to solve the issue. My aim is to mark the 3D territory of the middle cerebral artery on CT angiogra…

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## [Bad alloc when importing STL file as segmentation](https://discourse.slicer.org/t/bad-alloc-when-importing-stl-file-as-segmentation/3184)

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**Author:** [@ferhue](https://discourse.slicer.org/u/ferhue)\
**Replies:** 4\
**Last updated:** [June 14, 2018, 8:56pm UTC](https://discourse.slicer.org/t/bad-alloc-when-importing-stl-file-as-segmentation/3184 "2018-06-14T20:56:21Z")

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Hello, I am trying to import a 13 Mb big STL file as Segmentation, however I get a std::bad\_alloc error, because I think the module tries to allocate 65 Gb of data. Any idea how to circumvent this? How can I change the d…

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## [Issues with "fill between slices](https://discourse.slicer.org/t/issues-with-fill-between-slices/3186)

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**Author:** [@goetzf](https://discourse.slicer.org/u/goetzf)\
**Replies:** 1\
**Last updated:** [June 14, 2018, 8:45pm UTC](https://discourse.slicer.org/t/issues-with-fill-between-slices/3186 "2018-06-14T20:45:23Z")

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Slicer version 4.9.0-2018-05-30 Model Name: iMac Model Identifier: iMac18,3 Processor Name: Intel Core i7 Processor Speed: 4.2 GHz Number of Processors: 1 Total Number of Cores: 4 L2 Cache (per Core): 2…

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## [Can I change the gray level image to color image](https://discourse.slicer.org/t/can-i-change-the-gray-level-image-to-color-image/3180)

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**Author:** [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)\
**Replies:** 3\
**Last updated:** [June 14, 2018, 3:28pm UTC](https://discourse.slicer.org/t/can-i-change-the-gray-level-image-to-color-image/3180 "2018-06-14T15:28:47Z")

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can I change the gray level image to co lor image.

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## [Embed 3DSlicer in a web GUI](https://discourse.slicer.org/t/embed-3dslicer-in-a-web-gui/3167)

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**Author:** [@Raccoon5031](https://discourse.slicer.org/u/Raccoon5031)\
**Replies:** 3\
**Last updated:** [June 14, 2018, 1:45pm UTC](https://discourse.slicer.org/t/embed-3dslicer-in-a-web-gui/3167 "2018-06-14T13:45:49Z")

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Hi, As seen in this powerpoint (p. 134), 3D Slicer can be exposed via Girder or HTML/JS, as I don’t use Docker, Girder is not an option. So my question is, how can I proceed to embed my 3D-Slicer in a web GUI? Is there…

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## [Fail to export geometry based on DTI images to .stl file](https://discourse.slicer.org/t/fail-to-export-geometry-based-on-dti-images-to-stl-file/3171)

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**Author:** [@Kewei](https://discourse.slicer.org/u/Kewei)\
**Replies:** 10\
**Last updated:** [June 14, 2018, 1:21pm UTC](https://discourse.slicer.org/t/fail-to-export-geometry-based-on-dti-images-to-stl-file/3171 "2018-06-14T13:21:40Z")

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Hi, I have generated the geometry of the brain fibers based on DTI, but when I saved the file as the \*.stl file and opened it in another 3D software, I saw nothing. How can I solve this problem? Thanks, Kewei

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## [Model Maker - Volume Calculation](https://discourse.slicer.org/t/model-maker-volume-calculation/2807)

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**Author:** [@cphillips](https://discourse.slicer.org/u/cphillips)\
**Replies:** 13\
**Last updated:** [June 14, 2018, 11:43am UTC](https://discourse.slicer.org/t/model-maker-volume-calculation/2807 "2018-06-14T11:43:43Z")

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Operating system: Windows 7 Slicer version: 4.8.1 I am working with MRI data (.nii or NIFTI format, 8 slices) and trying to calculate the volume of a particular segment in each slice where it appears. For each slice, I…

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## [Adjusting and saving binary labelmaps](https://discourse.slicer.org/t/adjusting-and-saving-binary-labelmaps/1126)

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**Author:** [@stevenagl12](https://discourse.slicer.org/u/stevenagl12)\
**Replies:** 7\
**Last updated:** [June 13, 2018, 7:05pm UTC](https://discourse.slicer.org/t/adjusting-and-saving-binary-labelmaps/1126 "2018-06-13T19:05:36Z")

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I have cropped ROI volumes that were registered and their segmentations transforms and exported to binary labelmaps. I am trying to save those labelmaps to files that have the same dimensions so that I can create a proba…

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## [DWIConvert problem - image flipped?](https://discourse.slicer.org/t/dwiconvert-problem-image-flipped/3163)

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**Author:** [@docmagda](https://discourse.slicer.org/u/docmagda)\
**Replies:** 3\
**Last updated:** [June 13, 2018, 4:31pm UTC](https://discourse.slicer.org/t/dwiconvert-problem-image-flipped/3163 "2018-06-13T16:31:44Z")

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Dear Slicer community, I have a problem using the DWIConvert option in 3D Slicer. The data I use are the once downloaded from the HCP webpage for the WashU subjects (latest Q13 acquisition). I am actually working on the…

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## [Really need some help with texture analysis!](https://discourse.slicer.org/t/really-need-some-help-with-texture-analysis/3158)

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**Author:** [@geoderis](https://discourse.slicer.org/u/geoderis)\
**Replies:** 2\
**Last updated:** [June 13, 2018, 3:53pm UTC](https://discourse.slicer.org/t/really-need-some-help-with-texture-analysis/3158 "2018-06-13T15:53:58Z")

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Hello everyone, I am really asking for some help here as I am not very familiar with the software. I am trying to perform texture analysis on tumors in order to quantify their heterogeneity. (4.8.1 version) I will writ…

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## [Why I cannot Per-Structure Volume](https://discourse.slicer.org/t/why-i-cannot-per-structure-volume/3124)

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**Author:** [@Fang](https://discourse.slicer.org/u/Fang)\
**Replies:** 13\
**Last updated:** [June 13, 2018, 2:26pm UTC](https://discourse.slicer.org/t/why-i-cannot-per-structure-volume/3124 "2018-06-13T14:26:18Z")

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Operating system: Windows10 Slicer version: 4.9.0 Since I have an ‘STL’ file. I use segmentation module in order to get the labelmap. And using that labelmap as an input data. However, I cannot use the Per-Structure …

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## [OpenIGTLink drag and drop TrackerServer](https://discourse.slicer.org/t/openigtlink-drag-and-drop-trackerserver/3146)

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**Author:** [@katharina\_hecker](https://discourse.slicer.org/u/katharina_hecker)\
**Replies:** 4\
**Last updated:** [June 12, 2018, 7:32pm UTC](https://discourse.slicer.org/t/openigtlink-drag-and-drop-trackerserver/3146 "2018-06-12T19:32:01Z")

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Hi, I´m trying to use the Module: OpenIGTLink to get matrices from Matlab into 3D Slicer(4.8.1). Now I have downloaded therefore the Slicer Extensions and the zip folder for windows (64-bit). When I want to drag and dro…

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## [Segments created in segment editor are a collection of unconnected stripes](https://discourse.slicer.org/t/segments-created-in-segment-editor-are-a-collection-of-unconnected-stripes/3123)

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**Author:** [@Bo\_Martins](https://discourse.slicer.org/u/Bo_Martins)\
**Replies:** 5\
**Last updated:** [June 12, 2018, 1:52pm UTC](https://discourse.slicer.org/t/segments-created-in-segment-editor-are-a-collection-of-unconnected-stripes/3123 "2018-06-12T13:52:33Z")

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Hello I am new to 3Dslicer but I think it is a cool tool that could be useful for segmentation purposes. I hope you can help me. When creating segments in the segment editor I encounter problems. I am running version 4…

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## [Can I choose which GPU to use?](https://discourse.slicer.org/t/can-i-choose-which-gpu-to-use/3149)

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**Author:** [@Fernando](https://discourse.slicer.org/u/Fernando)\
**Replies:** 4\
**Last updated:** [June 12, 2018, 12:58pm UTC](https://discourse.slicer.org/t/can-i-choose-which-gpu-to-use/3149 "2018-06-12T12:58:55Z")

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Hi all, I’m using a gaming laptop (Dell Alienware 13 R3) which comes with an NVIDIA GeForce GTX 1060 GPU. Is there a way to configure Slicer to use it instead of the default GPU?

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## [Loaded .dcm, Segment Editor, Threshold Range flashes continuously when selected](https://discourse.slicer.org/t/loaded-dcm-segment-editor-threshold-range-flashes-continuously-when-selected/3142)

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**Author:** [@Seth](https://discourse.slicer.org/u/Seth)\
**Replies:** 2\
**Last updated:** [June 12, 2018, 2:12am UTC](https://discourse.slicer.org/t/loaded-dcm-segment-editor-threshold-range-flashes-continuously-when-selected/3142 "2018-06-12T02:12:27Z")

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Greetings, I’m using the latest stable version - 4.8.1 I’m relatively new but think this maybe a bug. I’m using a MacBook with macOS High Sierra v10.13.5 I can load dicom files (.dcm) and view axial, coronal, sagitta…

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## [Cannot “Center view” on 3D volume](https://discourse.slicer.org/t/cannot-center-view-on-3d-volume/3132)

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**Author:** [@arcampos](https://discourse.slicer.org/u/arcampos)\
**Replies:** 2\
**Last updated:** [June 10, 2018, 11:18pm UTC](https://discourse.slicer.org/t/cannot-center-view-on-3d-volume/3132 "2018-06-10T23:18:21Z")

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Hi I’m doing some segmentation on brain slices. I don’t know what I did, but suddenly my purple box is much bigger than my segmentation volumes. I’ve already tried “Center view” and to hide everything but my segmented v…

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