# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=387

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

**Page:** 388

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## [Registration of CBCT scans with small FOV (4x4cm)](https://discourse.slicer.org/t/registration-of-cbct-scans-with-small-fov-4x4cm/6684)

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**Author:** [@sfglio](https://discourse.slicer.org/u/sfglio)\
**Replies:** 1\
**Last updated:** [May 3, 2019, 6:31pm UTC](https://discourse.slicer.org/t/registration-of-cbct-scans-with-small-fov-4x4cm/6684 "2019-05-03T18:31:25Z")

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Operating system: MacOS 10.14.4 Slicer version: 4.11.0 Expected behavior: Registration of two scans (with/without dental implant) Actual behavior: I loaded the dicom files and tried General Registration (BRAINS) using…

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## [Short Slicer overview demonstration video?](https://discourse.slicer.org/t/short-slicer-overview-demonstration-video/6680)

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**Author:** [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Replies:** 4\
**Last updated:** [May 3, 2019, 5:55pm UTC](https://discourse.slicer.org/t/short-slicer-overview-demonstration-video/6680 "2019-05-03T17:55:55Z")

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In a couple of weeks, I (hopefully, along with @pieper!) will be demonstrating Slicer at the QIN annual face-to-face meeting. The format of that demonstration is to be determined (not by me), but there is a possibility t…

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## [DICOM resolution images](https://discourse.slicer.org/t/dicom-resolution-images/6687)

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**Author:** [@f.rota](https://discourse.slicer.org/u/f.rota)\
**Replies:** 1\
**Last updated:** [May 3, 2019, 1:05pm UTC](https://discourse.slicer.org/t/dicom-resolution-images/6687 "2019-05-03T13:05:27Z")

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Hi, I have some problems with the resolution of MRI set. After importing and uploading DICOM images, not all the views have the same resolution and some parts of the images are cut off, in particular the sagittal plane.…

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## [Trying to load .nii file generated with Nipype](https://discourse.slicer.org/t/trying-to-load-nii-file-generated-with-nipype/6611)

<div class="topic-metadata">

**Author:** [@quentinfrancois0](https://discourse.slicer.org/u/quentinfrancois0)\
**Replies:** 4\
**Last updated:** [May 2, 2019, 3:34pm UTC](https://discourse.slicer.org/t/trying-to-load-nii-file-generated-with-nipype/6611 "2019-05-02T15:34:18Z")

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Dear all, I’m new on Slicer after some work with Nipype. I would like to display the results of my work which is a registration between a T1 and a Scan of the same patient on Slicer. Nipype workflow generates a .nii fil…

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## [SPHARM-PDM not available in Slicer Extensions](https://discourse.slicer.org/t/spharm-pdm-not-available-in-slicer-extensions/6678)

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**Author:** [@stevenagl12](https://discourse.slicer.org/u/stevenagl12)\
**Replies:** 0\
**Last updated:** [May 2, 2019, 2:30pm UTC](https://discourse.slicer.org/t/spharm-pdm-not-available-in-slicer-extensions/6678 "2019-05-02T14:30:31Z")

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Operating System: Windows 10 Slicer Distribution: 4.11.0-2019-05-01 r28202 The slicer extension manager is not displaying the SPHARM-PDM extension anymore. In addition, the appsite http://slicer.kitware.com/midas3/slic…

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## [How to install Fast growcut extension in version4.11](https://discourse.slicer.org/t/how-to-install-fast-growcut-extension-in-version4-11/6150)

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**Author:** [@Shawn](https://discourse.slicer.org/u/Shawn)\
**Replies:** 3\
**Last updated:** [May 2, 2019, 4:21am UTC](https://discourse.slicer.org/t/how-to-install-fast-growcut-extension-in-version4-11/6150 "2019-05-02T04:21:43Z")

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Operating system: win 10 Slicer version: Slicer 4.11 Hi Everyone, I’d like to know how to install Fast growcut extension. I can not fine it in extension manager. Thank you all!

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## [Saving dicom data](https://discourse.slicer.org/t/saving-dicom-data/6667)

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**Author:** [@lambrosone](https://discourse.slicer.org/u/lambrosone)\
**Replies:** 1\
**Last updated:** [May 1, 2019, 8:54pm UTC](https://discourse.slicer.org/t/saving-dicom-data/6667 "2019-05-01T20:54:51Z")

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Operating system:win10 Slicer version: 4.8 Expected behavior: Actual behavior: I want to xchange the location of the slicer dicom database from my c drive to another data drive. How do I do that? My c drive gets over…

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## [Grow-cut on 2D image](https://discourse.slicer.org/t/grow-cut-on-2d-image/6666)

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**Author:** [@gcsharp](https://discourse.slicer.org/u/gcsharp)\
**Replies:** 2\
**Last updated:** [May 1, 2019, 6:37pm UTC](https://discourse.slicer.org/t/grow-cut-on-2d-image/6666 "2019-05-01T18:37:44Z")

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It seems grow-cut doesn’t work on 2D images. The output are empty segments. Below is what I get in the error log. Maybe I can workaround by duplication into a stack. Is there a built-in function for this? self.exten…

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## [Reverting back to Red Slice version AFTER making models](https://discourse.slicer.org/t/reverting-back-to-red-slice-version-after-making-models/6614)

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**Author:** [@SMO](https://discourse.slicer.org/u/SMO)\
**Replies:** 3\
**Last updated:** [May 1, 2019, 6:15pm UTC](https://discourse.slicer.org/t/reverting-back-to-red-slice-version-after-making-models/6614 "2019-05-01T18:15:32Z")

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Operating system: Slicer version: 4.10.1 Expected behavior: In the past I have been able to revert back to Red Slice versions AFTER having created a model. This allows me to modify Red Slice version…

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## [Fiducial markers from file](https://discourse.slicer.org/t/fiducial-markers-from-file/6597)

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**Author:** [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Replies:** 2\
**Last updated:** [May 1, 2019, 5:31pm UTC](https://discourse.slicer.org/t/fiducial-markers-from-file/6597 "2019-05-01T17:31:37Z")

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Operating system: Windows 10 Slicer version:4.10 Expected behavior: Attempting to add fiducial markers from FCSV file Actual behavior: False command I am trying to import fiducial markers from saved FCSV file to the …

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## [Histogram smoothing](https://discourse.slicer.org/t/histogram-smoothing/6662)

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**Author:** [@kayarre](https://discourse.slicer.org/u/kayarre)\
**Replies:** 1\
**Last updated:** [May 1, 2019, 12:32pm UTC](https://discourse.slicer.org/t/histogram-smoothing/6662 "2019-05-01T12:32:04Z")

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I am doing some analysis of MRI images and am attempting to come up with a rigerous way to do image normalization. I have come across papers that look at longitudinal studies of Alzheimer’s disease that use a histogram …

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## ["Averaging" 3D models](https://discourse.slicer.org/t/averaging-3d-models/6660)

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**Author:** [@stephan](https://discourse.slicer.org/u/stephan)\
**Replies:** 1\
**Last updated:** [May 1, 2019, 5:20am UTC](https://discourse.slicer.org/t/averaging-3d-models/6660 "2019-05-01T05:20:26Z")

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Hi, I have several 3D models which are fairly similar (heart contours), but not exactly equal. I was wondering if there is a way to create the “average” model of these after registering them to each other. I found a pa…

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## [Can't change the windowing of CT](https://discourse.slicer.org/t/cant-change-the-windowing-of-ct/6624)

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**Author:** [@sarvpriya1985](https://discourse.slicer.org/u/sarvpriya1985)\
**Replies:** 6\
**Last updated:** [May 1, 2019, 3:00am UTC](https://discourse.slicer.org/t/cant-change-the-windowing-of-ct/6624 "2019-05-01T03:00:26Z")

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Operating system:Windows 10 Slicer version: 4.11 Hi, I installed the latest nightly build. After importing Dicom data, I am unable to change the windowing of CT sets, though zoom works. It was working fine previously.…

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## [DICOM data not visible in DICOM browser, only loads in axial view,thin slice views in sagittal/coronal](https://discourse.slicer.org/t/dicom-data-not-visible-in-dicom-browser-only-loads-in-axial-view-thin-slice-views-in-sagittal-coronal/6635)

<div class="topic-metadata">

**Author:** [@Dexter777](https://discourse.slicer.org/u/Dexter777)\
**Replies:** 2\
**Last updated:** [April 30, 2019, 9:46pm UTC](https://discourse.slicer.org/t/dicom-data-not-visible-in-dicom-browser-only-loads-in-axial-view-thin-slice-views-in-sagittal-coronal/6635 "2019-04-30T21:46:12Z")

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Operating system:Windows10 Slicer version:4.10.1 Expected behavior:Data to load as volumes in all views,scroll wheel to work in all views Actual behavior: Data only visible in axial view, scrolling between views does …

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## [Resetting of splitted segments in virtual reality](https://discourse.slicer.org/t/resetting-of-splitted-segments-in-virtual-reality/6626)

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**Author:** [@sarvpriya1985](https://discourse.slicer.org/u/sarvpriya1985)\
**Replies:** 2\
**Last updated:** [April 30, 2019, 12:20pm UTC](https://discourse.slicer.org/t/resetting-of-splitted-segments-in-virtual-reality/6626 "2019-04-30T12:20:46Z")

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Operating system:windows 10 Slicer version:4.10 Expected behavior: Actual behavior: Hi, I installed the stable version 4.10 and is working fine with virtual reality. My question is: This is the base image that i co…

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## [Save to png file not aware of spacing](https://discourse.slicer.org/t/save-to-png-file-not-aware-of-spacing/6639)

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**Author:** [@ButuiHu](https://discourse.slicer.org/u/ButuiHu)\
**Replies:** 2\
**Last updated:** [April 30, 2019, 2:02am UTC](https://discourse.slicer.org/t/save-to-png-file-not-aware-of-spacing/6639 "2019-04-30T02:02:27Z")

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Hi, I’m trying to save a .mhd file to png file to insert in a document. However, 3dslicer seems to be aware of spacing when display .mhd file, but not in saving to .png file. In 3dslicer, I got this: after saving as…

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## [Maintenance of slicer.kitware.com planned on Thursday April 18th from 2 to 3pm EDT](https://discourse.slicer.org/t/maintenance-of-slicer-kitware-com-planned-on-thursday-april-18th-from-2-to-3pm-edt/6533)

<div class="topic-metadata">

**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 5\
**Last updated:** [April 29, 2019, 10:53pm UTC](https://discourse.slicer.org/t/maintenance-of-slicer-kitware-com-planned-on-thursday-april-18th-from-2-to-3pm-edt/6533 "2019-04-29T22:53:16Z")

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Download and upload of Slicer extensions will be unavailable on on Thursday April 18th (tomorrow) from 2 to 3pm EDT. The operating system associated with the server will be updated. For reference, earlier this week, we…

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## [Second layout manager rendering issue](https://discourse.slicer.org/t/second-layout-manager-rendering-issue/6643)

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**Author:** [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Replies:** 3\
**Last updated:** [April 29, 2019, 9:41pm UTC](https://discourse.slicer.org/t/second-layout-manager-rendering-issue/6643 "2019-04-29T21:41:12Z")

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I have a second layout manager that I’m using in an outside window (Slicer main window not displayed). Does anyone recognize what this rendering issue might mean? Not setting some size policy correctly? layout\_widget =…

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## [3D Recon Image Data](https://discourse.slicer.org/t/3d-recon-image-data/6644)

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**Author:** [@emrobert](https://discourse.slicer.org/u/emrobert)\
**Replies:** 0\
**Last updated:** [April 29, 2019, 8:22pm UTC](https://discourse.slicer.org/t/3d-recon-image-data/6644 "2019-04-29T20:22:41Z")

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Operating system: windows 10 Slicer version: 11.0 Expected behavior: Uploading 3D image reconstructions Actual behavior: When trying to upload a 3D skull recon fine, it says “cannot load as a scalar volume.” Is there …

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## [White strikes in constructed volume](https://discourse.slicer.org/t/white-strikes-in-constructed-volume/6581)

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**Author:** [@zoez](https://discourse.slicer.org/u/zoez)\
**Replies:** 4\
**Last updated:** [April 29, 2019, 7:30pm UTC](https://discourse.slicer.org/t/white-strikes-in-constructed-volume/6581 "2019-04-29T19:30:01Z")

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Hello, I have generated a volume by running VolumeReconstructor.exe with a saved mha file. However, the resulted volume has many white strikes in them, and these white strikes are not present in the original mha file. I…

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## [Slicer build errors on Window 7](https://discourse.slicer.org/t/slicer-build-errors-on-window-7/6642)

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**Author:** [@smrolfe](https://discourse.slicer.org/u/smrolfe)\
**Replies:** 4\
**Last updated:** [April 29, 2019, 4:24pm UTC](https://discourse.slicer.org/t/slicer-build-errors-on-window-7/6642 "2019-04-29T16:24:35Z")

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Hello, My Slicer build on a Windows 7 machine is failing due to errors building ITK and VTK. I’ve previously built Slicer on a Windows 10 machine and am using the same settings with the exception of unchecking the Slice…

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## [Importing DICOM files- 0 Patients](https://discourse.slicer.org/t/importing-dicom-files-0-patients/6634)

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**Author:** [@zamanmd](https://discourse.slicer.org/u/zamanmd)\
**Replies:** 1\
**Last updated:** [April 28, 2019, 7:27pm UTC](https://discourse.slicer.org/t/importing-dicom-files-0-patients/6634 "2019-04-28T19:27:52Z")

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Operating system: Windows 10 Slicer version: 4.11.0 Expected behavior: Succesfully importing 4 dicom files. Actual behavior: Imported 0 dicom files. Greetings! I hope that someone will be able to help me import four…

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## [Slicer crashes when enabling virtual reality view](https://discourse.slicer.org/t/slicer-crashes-when-enabling-virtual-reality-view/6625)

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**Author:** [@sarvpriya1985](https://discourse.slicer.org/u/sarvpriya1985)\
**Replies:** 2\
**Last updated:** [April 27, 2019, 6:36pm UTC](https://discourse.slicer.org/t/slicer-crashes-when-enabling-virtual-reality-view/6625 "2019-04-27T18:36:47Z")

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Operating system:windows 10 Slicer version:4.11 Expected behavior: Actual behavior: Hi, I am noticing Slicer crashing everytime i try opening virtual reality module. Is it a bug in latest build? Any fix? Thanks, S…

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## [Application of CT Scanning Soil Model in 3D Slicer](https://discourse.slicer.org/t/application-of-ct-scanning-soil-model-in-3d-slicer/6617)

<div class="topic-metadata">

**Author:** [@3D-Soil](https://discourse.slicer.org/u/3D-Soil)\
**Replies:** 2\
**Last updated:** [April 27, 2019, 4:13am UTC](https://discourse.slicer.org/t/application-of-ct-scanning-soil-model-in-3d-slicer/6617 "2019-04-27T04:13:49Z")

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Hello, everyone, I am not a medical major, but I want to ask the question of 3D Slicer. I scanned a soil column with CT. I want to use 3D Slicer to identify different size particles in the soil column and calculate its p…

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## [Nightly Buildly Install- Dicom Importer Window not opening](https://discourse.slicer.org/t/nightly-buildly-install-dicom-importer-window-not-opening/6622)

<div class="topic-metadata">

**Author:** [@Kate\_Serralde](https://discourse.slicer.org/u/Kate_Serralde)\
**Replies:** 5\
**Last updated:** [April 26, 2019, 9:18pm UTC](https://discourse.slicer.org/t/nightly-buildly-install-dicom-importer-window-not-opening/6622 "2019-04-26T21:18:35Z")

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Problem report for Slicer 4.11.0-2019-04-17 macosx-amd64: \[please describe expected and actual behavior\] dicom widget has no attribute Application log\[DEBUG\]\[Qt\] 26.04.2019 10:15:05 \[\] (unknown:0) - Session start time …

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## [Installing extension from Linux build](https://discourse.slicer.org/t/installing-extension-from-linux-build/1995)

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**Author:** [@dlevitas](https://discourse.slicer.org/u/dlevitas)\
**Replies:** 13\
**Last updated:** [April 26, 2019, 5:49pm UTC](https://discourse.slicer.org/t/installing-extension-from-linux-build/1995 "2019-04-26T17:49:15Z")

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Hello, I recently switched from Mac to Linux, so I downloaded the stable Linux release (4.8.1). I’m not as familiar with Linux, so I don’t know how to add extensions. With the Mac version I could load the GUI and do it …

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## [Extend ROI after cropping and segmenting](https://discourse.slicer.org/t/extend-roi-after-cropping-and-segmenting/6594)

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**Author:** [@ED1](https://discourse.slicer.org/u/ED1)\
**Replies:** 3\
**Last updated:** [April 26, 2019, 4:20pm UTC](https://discourse.slicer.org/t/extend-roi-after-cropping-and-segmenting/6594 "2019-04-26T16:20:12Z")

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Operating system: Win10 Slicer version: 4.10.0 Action: Cropped region of interest using Crop Volume. Segmented on the ROI. Want to extend the ROI of interest 1 cm vertically so that I can do more segmenting on the ex…

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## [How to determine the temporal resolution using DICOM Header Information in perfusion MRI ?](https://discourse.slicer.org/t/how-to-determine-the-temporal-resolution-using-dicom-header-information-in-perfusion-mri/6613)

<div class="topic-metadata">

**Author:** [@inesben](https://discourse.slicer.org/u/inesben)\
**Replies:** 2\
**Last updated:** [April 26, 2019, 2:29pm UTC](https://discourse.slicer.org/t/how-to-determine-the-temporal-resolution-using-dicom-header-information-in-perfusion-mri/6613 "2019-04-26T14:29:27Z")

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Operating system: Slicer version: Expected behavior: Actual behavior:

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## [Threshold changes when we change contrast value](https://discourse.slicer.org/t/threshold-changes-when-we-change-contrast-value/6621)

<div class="topic-metadata">

**Author:** [@prorai](https://discourse.slicer.org/u/prorai)\
**Replies:** 3\
**Last updated:** [April 26, 2019, 12:41pm UTC](https://discourse.slicer.org/t/threshold-changes-when-we-change-contrast-value/6621 "2019-04-26T12:41:24Z")

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i’m using contrast change in python code, i.e. a = slicer.util.arrayFromVolume(self.importedVolume) self.contrastScale = 2.0 a\[:\] = a \* self.contrastScale i notice that it changes the threshold value impact on volume …

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## [Eigenvectors and eigenvalues](https://discourse.slicer.org/t/eigenvectors-and-eigenvalues/6612)

<div class="topic-metadata">

**Author:** [@Ilaria\_Cinelli](https://discourse.slicer.org/u/Ilaria_Cinelli)\
**Replies:** 1\
**Last updated:** [April 26, 2019, 12:11pm UTC](https://discourse.slicer.org/t/eigenvectors-and-eigenvalues/6612 "2019-04-26T12:11:14Z")

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I need to extract values and distributions of eigenvalues and eigenvectors to import them in another software, and direction of eigenvectors. In “Diffusion Tensor Scalar Maps” I can plot the eigenvalues and in the “Volu…

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