# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=412

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

**Page:** 413

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## [Model is not showing](https://discourse.slicer.org/t/model-is-not-showing/4104)

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**Author:** [@Ghaddy](https://discourse.slicer.org/u/Ghaddy)\
**Replies:** 7\
**Last updated:** [September 13, 2018, 6:18pm UTC](https://discourse.slicer.org/t/model-is-not-showing/4104 "2018-09-13T18:18:49Z")

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Hi I have another promblem with tool intensity segmenter. Once i am done after hitting apply… the model is not showing on the top right (3d view) Is therr any thing i can do? Thank you

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## [Error running DWIConvert (cli)](https://discourse.slicer.org/t/error-running-dwiconvert-cli/4101)

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**Author:** [@devg](https://discourse.slicer.org/u/devg)\
**Replies:** 1\
**Last updated:** [September 13, 2018, 4:46pm UTC](https://discourse.slicer.org/t/error-running-dwiconvert-cli/4101 "2018-09-13T16:46:34Z")

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Hi I was trying to use DWIConvert to convert a dicom series to nifti (the series is from TCIA NSCLC\_Radiogenomics collection, Patient R01-022, Series RECON 3: CT CHEST W/O). I get the error below when I run DWIConvert. …

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## [Intensity segmener](https://discourse.slicer.org/t/intensity-segmener/4102)

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**Author:** [@Ghaddy](https://discourse.slicer.org/u/Ghaddy)\
**Replies:** 0\
**Last updated:** [September 13, 2018, 4:42pm UTC](https://discourse.slicer.org/t/intensity-segmener/4102 "2018-09-13T16:42:05Z")

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Hi I am having a problem with the intensity segmenter tool with some files /not all/… once I open a .giple file it wont let me put any thing in input/volum so I can not hit apply to creat segmented model. I also notice…

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## [Build problem (unknown \_libiconv symbols) on macOS (using MacPorts)](https://discourse.slicer.org/t/build-problem-unknown-libiconv-symbols-on-macos-using-macports/1796)

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**Author:** [@hmeine](https://discourse.slicer.org/u/hmeine)\
**Replies:** 5\
**Last updated:** [September 13, 2018, 2:33pm UTC](https://discourse.slicer.org/t/build-problem-unknown-libiconv-symbols-on-macos-using-macports/1796 "2018-09-13T14:33:38Z")

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I am trying to compile Slicer on macOS 10.12.6 with XCode 9.1. Homebrew is not installed, I am using MacPorts. My SuperBuild fails in DCMTK-build, with \[ 2%\] Linking CXX shared library …/…/lib/libofstd.dylib Undefi…

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## [Displaying Hounsfield Units / Finding Average](https://discourse.slicer.org/t/displaying-hounsfield-units-finding-average/4071)

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**Author:** [@Michael.C](https://discourse.slicer.org/u/Michael.C)\
**Replies:** 3\
**Last updated:** [September 13, 2018, 4:44am UTC](https://discourse.slicer.org/t/displaying-hounsfield-units-finding-average/4071 "2018-09-13T04:44:00Z")

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I’m trying to use 3D Slicer to calculate the Hounsfield Unit value for several different samples. The different regions of interest are easily demarcated from one another as they’re solutions in separate tubes within a s…

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## [Problem loading STL file](https://discourse.slicer.org/t/problem-loading-stl-file/1239)

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**Author:** [@markz1](https://discourse.slicer.org/u/markz1)\
**Replies:** 10\
**Last updated:** [October 24, 2017, 1:19pm UTC](https://discourse.slicer.org/t/problem-loading-stl-file/1239 "2017-10-24T13:19:14Z")

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I’m trying to load an STL file into 3D Slicer, and it doesn’t appear to be loading correctly. It appears like this: To get around this, I imported it into other software, saved it as a .ply file, and imported it into…

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## [Using Cordonics Files](https://discourse.slicer.org/t/using-cordonics-files/4081)

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**Author:** [@Poppy123](https://discourse.slicer.org/u/Poppy123)\
**Replies:** 2\
**Last updated:** [September 12, 2018, 8:48pm UTC](https://discourse.slicer.org/t/using-cordonics-files/4081 "2018-09-12T20:48:33Z")

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Operating system: Windows 10 Slicer version:4.8.1 Expected behavior: import files Actual behavior: unable to select top folder I am trying to load files from Cordonics and when I select the top level folder the ‘impo…

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## [NIFTI image matlab](https://discourse.slicer.org/t/nifti-image-matlab/4086)

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**Author:** [@sil91](https://discourse.slicer.org/u/sil91)\
**Replies:** 1\
**Last updated:** [September 12, 2018, 5:37pm UTC](https://discourse.slicer.org/t/nifti-image-matlab/4086 "2018-09-12T17:37:35Z")

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Good evening, I look for support because I am explained as the nifti images with matlab. What do the header fields mean? Which variable is the intensity of each pixel? I have the field nii, that contains .img, that cont…

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## [Load volume and segmentation issue](https://discourse.slicer.org/t/load-volume-and-segmentation-issue/3137)

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**Author:** [@trnhx001](https://discourse.slicer.org/u/trnhx001)\
**Replies:** 3\
**Last updated:** [September 12, 2018, 2:54pm UTC](https://discourse.slicer.org/t/load-volume-and-segmentation-issue/3137 "2018-09-12T14:54:31Z")

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Operating system: Window 7 Slicer version: 4.8.1 Expected behavior:Load files and display successfully Actual behavior: False Hi again, I am new to using Python Interactor in 3D Slicer. I am trying to load DCOM/NRRD…

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## [New segment editor effect for creating hollow objects](https://discourse.slicer.org/t/new-segment-editor-effect-for-creating-hollow-objects/2464)

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**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 4\
**Last updated:** [April 9, 2018, 4:36am UTC](https://discourse.slicer.org/t/new-segment-editor-effect-for-creating-hollow-objects/2464 "2018-04-09T04:36:30Z")

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Making a solid segment hollow is useful in many applications, such as creating 3D-printable vessel walls from contrast-CT volumes. While it was possible to create hollow segments in 3D Slicer by using Margins and Logica…

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## [Fiducial Registration wizard](https://discourse.slicer.org/t/fiducial-registration-wizard/4038)

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**Author:** [@tomas](https://discourse.slicer.org/u/tomas)\
**Replies:** 4\
**Last updated:** [September 11, 2018, 9:08pm UTC](https://discourse.slicer.org/t/fiducial-registration-wizard/4038 "2018-09-11T21:08:01Z")

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Operating system: Windows 10 Slicer version: 4.9.0 Hi, I have some query regarding “Fidutial Registration wizard”. I am using the ‘fiducial registration wizard’ module transform type “rigid” and “Similarity" Registr…

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## [SLICER 4.9 software does not work after installation.](https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045)

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**Author:** [@zhaoduanyun](https://discourse.slicer.org/u/zhaoduanyun)\
**Replies:** 5\
**Last updated:** [September 11, 2018, 6:31pm UTC](https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045 "2018-09-11T18:31:47Z")

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Operating system:Windows 7 Pro SP1 64 bit Slicer version:4.9 nightlybuild Expected behavior:Running normally after installation Actual behavior:The software was installed successfully, but double-clicking on the icon …

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## [Problem with manual segmentation of the outerskull](https://discourse.slicer.org/t/problem-with-manual-segmentation-of-the-outerskull/4065)

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**Author:** [@m.hilani](https://discourse.slicer.org/u/m.hilani)\
**Replies:** 4\
**Last updated:** [September 11, 2018, 6:15pm UTC](https://discourse.slicer.org/t/problem-with-manual-segmentation-of-the-outerskull/4065 "2018-09-11T18:15:06Z")

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Hi, I am trying to manually segment the outerskull surface of a brain MRI. I managed to have the contour of that surface using the “threshold” option in the segment editor. But now what I have is the 3D segmented conto…

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## [Volume rendering issues with high-resolution data in 4.9 nightlies continues with new hardware](https://discourse.slicer.org/t/volume-rendering-issues-with-high-resolution-data-in-4-9-nightlies-continues-with-new-hardware/4051)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 13\
**Last updated:** [September 11, 2018, 2:27pm UTC](https://discourse.slicer.org/t/volume-rendering-issues-with-high-resolution-data-in-4-9-nightlies-continues-with-new-hardware/4051 "2018-09-11T14:27:54Z")

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I recently upgraded my desktop GPU from old Geforce Titan to 1080TI due to the feedback I am getting new VTK requiring newer hardware. My datasets, which work perfectly with 4.8.1, crashes the GPU volume rendering in ni…

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## [Volume sequence import](https://discourse.slicer.org/t/volume-sequence-import/3664)

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**Author:** [@Felix\_Navarro\_Guirad](https://discourse.slicer.org/u/Felix_Navarro_Guirad)\
**Replies:** 1\
**Last updated:** [August 5, 2018, 4:06pm UTC](https://discourse.slicer.org/t/volume-sequence-import/3664 "2018-08-05T16:06:18Z")

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Dear Slicer users, I’m trying to import a 4D nifti which was created using the header shown in the attached image. I would like to import it as multi volume and sequence. Right now I can import it as multi volume but, …

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## [Volume Model has Black box around it](https://discourse.slicer.org/t/volume-model-has-black-box-around-it/4054)

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**Author:** [@Jay](https://discourse.slicer.org/u/Jay)\
**Replies:** 6\
**Last updated:** [September 11, 2018, 1:55pm UTC](https://discourse.slicer.org/t/volume-model-has-black-box-around-it/4054 "2018-09-11T13:55:22Z")

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Operating system: Windows 7 Slicer version:Nightly Build 2018-09-08 Expected behavior: I’m trying to use the scissors and mask volume tools to erase the table a patient’s scan was taken on. I’m following this video: ht…

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## [How to correlate MRA images with MIP reconstructed images?](https://discourse.slicer.org/t/how-to-correlate-mra-images-with-mip-reconstructed-images/4059)

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**Author:** [@pfz\_biomind](https://discourse.slicer.org/u/pfz_biomind)\
**Replies:** 2\
**Last updated:** [September 11, 2018, 1:09pm UTC](https://discourse.slicer.org/t/how-to-correlate-mra-images-with-mip-reconstructed-images/4059 "2018-09-11T13:09:16Z")

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Operating system: Mac OS Slicer version: 4.8.1 Expected behavior: Actual behavior: I have MRA images of brains, and also have MIP reconstructed images based on the MRA images. My question is how to correlate these tw…

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## [Finding corresponding segments in segmentations](https://discourse.slicer.org/t/finding-corresponding-segments-in-segmentations/4055)

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**Author:** [@phcerdan](https://discourse.slicer.org/u/phcerdan)\
**Replies:** 8\
**Last updated:** [September 11, 2018, 12:50pm UTC](https://discourse.slicer.org/t/finding-corresponding-segments-in-segmentations/4055 "2018-09-11T12:50:31Z")

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Hi, I haven’t found a way to change the segmentId on a SegmentationNode. I can change the name of a segment, but not the ID. segmentationNode.GetSegmentation().GetSegment('a\_segment\_id').SetName('segment\_name') Just w…

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## [Downsampling at the time of import](https://discourse.slicer.org/t/downsampling-at-the-time-of-import/4039)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 8\
**Last updated:** [September 10, 2018, 8:39pm UTC](https://discourse.slicer.org/t/downsampling-at-the-time-of-import/4039 "2018-09-10T20:39:58Z")

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I am working on a high-resolution dataset, which is 16GB in size (2000x2000x2000, short data type). It is a tiff sequence. I need to write a set of instructions for people to process such large data in Slicer. While I h…

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## [How to apply intensity normalization to MRI(.mha) with Slicer](https://discourse.slicer.org/t/how-to-apply-intensity-normalization-to-mri-mha-with-slicer/1690)

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**Author:** [@hei6775](https://discourse.slicer.org/u/hei6775)\
**Replies:** 7\
**Last updated:** [September 10, 2018, 6:24pm UTC](https://discourse.slicer.org/t/how-to-apply-intensity-normalization-to-mri-mha-with-slicer/1690 "2018-09-10T18:24:48Z")

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Hi, I am working with a project of brain segmentation and need to preprocess my MRI(from BRATS2015). I have applied N4ITK within Slicer, but I cannot find out how to apply intensity normalization with Slicer 4.6.2. Or i…

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## [After saving and re-opening files, I cannot re-edit the labels using Editor](https://discourse.slicer.org/t/after-saving-and-re-opening-files-i-cannot-re-edit-the-labels-using-editor/4048)

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**Author:** [@jamieng](https://discourse.slicer.org/u/jamieng)\
**Replies:** 7\
**Last updated:** [September 10, 2018, 5:35pm UTC](https://discourse.slicer.org/t/after-saving-and-re-opening-files-i-cannot-re-edit-the-labels-using-editor/4048 "2018-09-10T17:35:49Z")

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Operating system: Windows Slicer version: 4.8.1 Hi, as I am new to Slicer, I am still quite unsure about many terminology and especially about the file type extensions. Please excuse me if I use some terms wrongly. I …

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## [Linking viewers not working](https://discourse.slicer.org/t/linking-viewers-not-working/4032)

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**Author:** [@IMF-Slicer](https://discourse.slicer.org/u/IMF-Slicer)\
**Replies:** 1\
**Last updated:** [September 10, 2018, 2:58pm UTC](https://discourse.slicer.org/t/linking-viewers-not-working/4032 "2018-09-10T14:58:34Z")

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Hello. I’m using 4.8.1. Trying to follow the Data Loading tutorial. I link the three viewers together, but the eye function is not linked. Cannot figure out what I am doing wrong. Does it work for others? Thank you I…

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## [Opacity not working for me](https://discourse.slicer.org/t/opacity-not-working-for-me/4029)

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**Author:** [@IMF-Slicer](https://discourse.slicer.org/u/IMF-Slicer)\
**Replies:** 1\
**Last updated:** [September 10, 2018, 2:54pm UTC](https://discourse.slicer.org/t/opacity-not-working-for-me/4029 "2018-09-10T14:54:46Z")

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Operating system: Ubuntu 18.04.1 running in VBox on Windows 10 Slicer version: 4.8.1 Expected behavior: Opacity should work Actual behavior: Trying to follow the 4 min tutorial. Works well until setting the opacity fo…

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## [Volume doesn't after I modify the voxel value](https://discourse.slicer.org/t/volume-doesnt-after-i-modify-the-voxel-value/4037)

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**Author:** [@Tien\_Qiao](https://discourse.slicer.org/u/Tien_Qiao)\
**Replies:** 1\
**Last updated:** [September 9, 2018, 8:42pm UTC](https://discourse.slicer.org/t/volume-doesnt-after-i-modify-the-voxel-value/4037 "2018-09-09T20:42:40Z")

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Operating system: Ubuntu 18.04 Slicer version: latest from github Expected behavior: volume color should be changed if I modified its voxel value. Actual behavior: The volume appearance doesn’t change. I wonder how to…

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## [Calculating the distance between two points](https://discourse.slicer.org/t/calculating-the-distance-between-two-points/4033)

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**Author:** [@aseman](https://discourse.slicer.org/u/aseman)\
**Replies:** 1\
**Last updated:** [September 9, 2018, 12:09pm UTC](https://discourse.slicer.org/t/calculating-the-distance-between-two-points/4033 "2018-09-09T12:09:51Z")

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Operating system:windows 10 Slicer version:4.8.1 Hi 3D slicer experts I want to calculate the distance between two points A and B in following figure. Which module should I use to do this? Thanks a lot

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## [Automatic Segmentation](https://discourse.slicer.org/t/automatic-segmentation/4022)

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**Author:** [@oc34](https://discourse.slicer.org/u/oc34)\
**Replies:** 1\
**Last updated:** [September 7, 2018, 10:26pm UTC](https://discourse.slicer.org/t/automatic-segmentation/4022 "2018-09-07T22:26:24Z")

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Hi I downloaded a nii file that has already segmentation. I don’t need to do segmentation. I want to see segmentations but I couldn’t. How can I open segmentation? After I open segmentation, I want to export STL files. …

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## [Import NIFTI tensor](https://discourse.slicer.org/t/import-nifti-tensor/4004)

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**Author:** [@AKKnutsen](https://discourse.slicer.org/u/AKKnutsen)\
**Replies:** 2\
**Last updated:** [September 7, 2018, 4:44pm UTC](https://discourse.slicer.org/t/import-nifti-tensor/4004 "2018-09-07T16:44:08Z")

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Operating system: Windows 64-bit Slicer version: 4.8.1 I’m interested in loading a tensor saved as a 4D NIFTI for visualization, but am unsure of how to do so. This does not appear to be an option in DWIConvert. Is an…

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## [Segmentation fault: 11 when using DWIConvert](https://discourse.slicer.org/t/segmentation-fault-11-when-using-dwiconvert/4015)

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**Author:** [@alca](https://discourse.slicer.org/u/alca)\
**Replies:** 0\
**Last updated:** [September 7, 2018, 11:30am UTC](https://discourse.slicer.org/t/segmentation-fault-11-when-using-dwiconvert/4015 "2018-09-07T11:30:13Z")

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Operating system: Mac Os Slicer version: 4.8.1 I am trying to use DWIConvert to convert nrrd to nii (–conversionMode NrrdToFSL) on the data that were previously preprocessed by DTIPrep (before that I successfully conve…

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## [NRRD space tag not parsed](https://discourse.slicer.org/t/nrrd-space-tag-not-parsed/4006)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 2\
**Last updated:** [September 6, 2018, 6:20pm UTC](https://discourse.slicer.org/t/nrrd-space-tag-not-parsed/4006 "2018-09-06T18:20:35Z")

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Is this expected? This is with r27390 on windows 10. ReadImageInformation: Error reading C:/Users/amaga/Box Sync/PI\_Murat/grant\_proposals/Nsf\_Informatics/data\_dropbox/Chris.Percival/dont\_work.nhdr: \[nrrd\] nrrdLoad: tro…

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## [Model Maker does not create model from label map](https://discourse.slicer.org/t/model-maker-does-not-create-model-from-label-map/3977)

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**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Replies:** 6\
**Last updated:** [September 6, 2018, 8:23am UTC](https://discourse.slicer.org/t/model-maker-does-not-create-model-from-label-map/3977 "2018-09-06T08:23:20Z")

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Slicer built at commit af5f294fb on Linux using GCC 8.2, Python 2.7.15 I just noticed that Model Maker fails to create a model from a label map generated in Simple Growing Segmentation module with a few fiducial points.…

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