# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=237

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

**Page:** 238

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## [Is it possible in any way to smooth the surface without "spoiling" some faces](https://discourse.slicer.org/t/is-it-possible-in-any-way-to-smooth-the-surface-without-spoiling-some-faces/22071)

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**Author:** [@yoav\_benhaim](https://discourse.slicer.org/u/yoav_benhaim)\
**Replies:** 3\
**Last updated:** [February 22, 2022, 5:08pm UTC](https://discourse.slicer.org/t/is-it-possible-in-any-way-to-smooth-the-surface-without-spoiling-some-faces/22071 "2022-02-22T17:08:55Z")

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hello, I want to smooth my surface to receive a surface that is one face (to reduce vertices and edges) but I need that some part of the surface would be smooth but stay different faces from all the rest of the surface. …

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## [Automatic registration of segmentation](https://discourse.slicer.org/t/automatic-registration-of-segmentation/22045)

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**Author:** [@Cam\_Arnt](https://discourse.slicer.org/u/Cam_Arnt)\
**Replies:** 4\
**Last updated:** [February 22, 2022, 4:15pm UTC](https://discourse.slicer.org/t/automatic-registration-of-segmentation/22045 "2022-02-22T16:15:22Z")

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Hi everyone, I’ve got a problem with the automatic registration. I will explain you : I’ve achieved the segmentation of bones on CT-scan images and catilages on MRI images. I would like to register the segmentation wit…

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## [Slice View Zoom in and out](https://discourse.slicer.org/t/slice-view-zoom-in-and-out/21980)

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**Author:** [@Prasun\_Parmar](https://discourse.slicer.org/u/Prasun_Parmar)\
**Replies:** 3\
**Last updated:** [February 22, 2022, 10:28am UTC](https://discourse.slicer.org/t/slice-view-zoom-in-and-out/21980 "2022-02-22T10:28:37Z")

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How to change shortcut of slice view zoom in and zoom out using python script. Currently slicer have “Ctrl + Mouse wheel” but i want to use as “Ctrl + Right click hold + mouse move”. So how can I make these changes.

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## [Save and Export](https://discourse.slicer.org/t/save-and-export/22097)

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**Author:** [@19lollo95](https://discourse.slicer.org/u/19lollo95)\
**Replies:** 1\
**Last updated:** [February 22, 2022, 12:26am UTC](https://discourse.slicer.org/t/save-and-export/22097 "2022-02-22T00:26:11Z")

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Hi everyone, I did a segmentation of a brain with a tumor (specifically the MRBrainTumor1 in BuiltIn). I’m having trouble with the save operation. I need to get 3 .mhd files: The first which contains the skull; The se…

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## [How to align brain CT and MR images？](https://discourse.slicer.org/t/how-to-align-brain-ct-and-mr-images/22080)

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**Author:** [@yllgl](https://discourse.slicer.org/u/yllgl)\
**Replies:** 1\
**Last updated:** [February 21, 2022, 6:36pm UTC](https://discourse.slicer.org/t/how-to-align-brain-ct-and-mr-images/22080 "2022-02-21T18:36:32Z")

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I have tried brain rigid image base registration in slicer3d. But the result is not very good. Could any body give my some suggestions about how to register the brain CT and MR image? I don’t want to use landmark method,…

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## [I cannot find the SlicerANTs package](https://discourse.slicer.org/t/i-cannot-find-the-slicerants-package/22087)

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**Author:** [@imurrieta](https://discourse.slicer.org/u/imurrieta)\
**Replies:** 1\
**Last updated:** [February 21, 2022, 6:22pm UTC](https://discourse.slicer.org/t/i-cannot-find-the-slicerants-package/22087 "2022-02-21T18:22:05Z")

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Hi, I want to install SlicerANTs in Slicer (4.11.20210226 r29738 / 7a593c8); however, whenever I go to the extensions module I don’t find the SlicerANTs package. Is my version “nightly”, If not, how can I do to solve thi…

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## [LongitudinalPETCT extension](https://discourse.slicer.org/t/longitudinalpetct-extension/22050)

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**Author:** [@dicom](https://discourse.slicer.org/u/dicom)\
**Replies:** 3\
**Last updated:** [February 21, 2022, 2:05pm UTC](https://discourse.slicer.org/t/longitudinalpetct-extension/22050 "2022-02-21T14:05:36Z")

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Hi all, I am trying to open a DICOM image of from a PET device using Slicer3D. Importing my folder, it fails with the following error message: Like other users I cannot find this module in the extension manager and …

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## [Segmentation Output Size Scale](https://discourse.slicer.org/t/segmentation-output-size-scale/22005)

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**Author:** [@Ed\_Hopkins](https://discourse.slicer.org/u/Ed_Hopkins)\
**Replies:** 3\
**Last updated:** [February 21, 2022, 1:53pm UTC](https://discourse.slicer.org/t/segmentation-output-size-scale/22005 "2022-02-21T13:53:59Z")

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Hi there! New 3D Slicer user. Just wondering if anyone knows if I am going wrong anywhere, I have hundreds of CT scan images, similar to the one below. I have been able to generate a segmentation/reconstructed CAD geom…

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## [The feret diameter cannot be calculated](https://discourse.slicer.org/t/the-feret-diameter-cannot-be-calculated/22081)

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**Author:** [@hourglassnam](https://discourse.slicer.org/u/hourglassnam)\
**Replies:** 0\
**Last updated:** [February 21, 2022, 6:00am UTC](https://discourse.slicer.org/t/the-feret-diameter-cannot-be-calculated/22081 "2022-02-21T06:00:48Z")

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Dear all, I had trouble loading Labelmap Statistics from the Segment Statistics module. I tried all the plugin parameters and noticed that the Feret diameter mm is the only one that does not work. I wonder if this had…

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## [No module named 'clr' error](https://discourse.slicer.org/t/no-module-named-clr-error/22028)

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**Author:** [@siaeleni](https://discourse.slicer.org/u/siaeleni)\
**Replies:** 5\
**Last updated:** [February 21, 2022, 4:02am UTC](https://discourse.slicer.org/t/no-module-named-clr-error/22028 "2022-02-21T04:02:02Z")

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Hello, I use a module and I get the following error when they try to import clr: “No module named ‘clr’ error” I tried to import pythonnet by using: pip\_install(‘pythonnet’). But when I restart 3DSlicer I get the fol…

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## [Loadvolume nrrd Fail in mac, what's wrong?](https://discourse.slicer.org/t/loadvolume-nrrd-fail-in-mac-whats-wrong/22066)

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**Author:** [@jumbojing](https://discourse.slicer.org/u/jumbojing)\
**Replies:** 3\
**Last updated:** [February 20, 2022, 5:30am UTC](https://discourse.slicer.org/t/loadvolume-nrrd-fail-in-mac-whats-wrong/22066 "2022-02-20T05:30:52Z")

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Loadvolume .nrrd file failed in mac, what’s wrong? \>\>\> masterVolumeNode = slicer.util.loadVolume("/Users/liguimei/Documents/slicerTempt/pedicle-triangle-planner/testa/vertebra2stl/CT-chest.nrrd") Traceback (most rece…

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## [Can i use python for automate my 3D reconstruction?](https://discourse.slicer.org/t/can-i-use-python-for-automate-my-3d-reconstruction/22072)

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**Author:** [@yoav\_benhaim](https://discourse.slicer.org/u/yoav_benhaim)\
**Replies:** 1\
**Last updated:** [February 20, 2022, 2:40am UTC](https://discourse.slicer.org/t/can-i-use-python-for-automate-my-3d-reconstruction/22072 "2022-02-20T02:40:09Z")

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hello! I use python for segments dicom files. and I want to use 3d slicer for the 3d reconstruction. are 3D slicer has the possibility to be automated with a script code? could it be direct from python (pycharm or ju…

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## [Dicom import problem (ultrasound)](https://discourse.slicer.org/t/dicom-import-problem-ultrasound/3700)

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**Author:** [@ksksbs](https://discourse.slicer.org/u/ksksbs)\
**Replies:** 6\
**Last updated:** [February 19, 2022, 9:24pm UTC](https://discourse.slicer.org/t/dicom-import-problem-ultrasound/3700 "2022-02-19T21:24:34Z")

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Dear Andras Lasso I have been not able to import the ultrasound images (dicom files-2D/3D…). There have been not any other things in Slicer software. Ultrasound images were made by Canon Medical Systems. Do you have …

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## [Free Form Deformation Registration](https://discourse.slicer.org/t/free-form-deformation-registration/22058)

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**Author:** [@Vir](https://discourse.slicer.org/u/Vir)\
**Replies:** 4\
**Last updated:** [February 19, 2022, 8:16pm UTC](https://discourse.slicer.org/t/free-form-deformation-registration/22058 "2022-02-19T20:16:43Z")

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Hello . I’m trying to register two lung CT volume from the same patient (baseline and post ) using the B-spline free form deformation algorithm where my initial transformation is a composition of Affine and Initial B-sp…

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## [Loading Philips 3D US](https://discourse.slicer.org/t/loading-philips-3d-us/13163)

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**Author:** [@Rodrigo\_Visconti](https://discourse.slicer.org/u/Rodrigo_Visconti)\
**Replies:** 10\
**Last updated:** [October 6, 2020, 4:40am UTC](https://discourse.slicer.org/t/loading-philips-3d-us/13163 "2020-10-06T04:40:30Z")

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I tried to load this file but it seems to be distorted. I can’t save in the cartesian dicom with the Philips software. There’s a way to correct it? https://1drv.ms/u/s!AngD48X\_D6KrgaQZHV83Zit8bPm\_0g

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## [Hardware: Is Apple M1 much faster as Intel CPU´s?](https://discourse.slicer.org/t/hardware-is-apple-m1-much-faster-as-intel-cpu-s/21992)

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**Author:** [@norus](https://discourse.slicer.org/u/norus)\
**Replies:** 3\
**Last updated:** [February 19, 2022, 3:30pm UTC](https://discourse.slicer.org/t/hardware-is-apple-m1-much-faster-as-intel-cpu-s/21992 "2022-02-19T15:30:12Z")

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Operating system: win 10 Slicer version: 4.11.20200930 Expected behavior: Actual behavior: Hello, we are using 3D-slicer for Vet-OP-preparing. -very usefull software, thanks a lot to all, developing the SW. This ye…

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## [DICOM import contrast problem](https://discourse.slicer.org/t/dicom-import-contrast-problem/22007)

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**Author:** [@AsliBeriL](https://discourse.slicer.org/u/AsliBeriL)\
**Replies:** 7\
**Last updated:** [February 19, 2022, 12:02pm UTC](https://discourse.slicer.org/t/dicom-import-contrast-problem/22007 "2022-02-19T12:02:58Z")

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Operating system: Windows 10 Slicer version: 4.11.20210226 Dear 3D Slicer experts, I searched for the answer to my question but couldn’t find it. When I add a new patient (MRI stacks), the contrast of the slices looks…

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## [Plastimatch Modules broken links](https://discourse.slicer.org/t/plastimatch-modules-broken-links/22051)

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**Author:** [@Young\_Wang](https://discourse.slicer.org/u/Young_Wang)\
**Replies:** 3\
**Last updated:** [February 19, 2022, 1:31am UTC](https://discourse.slicer.org/t/plastimatch-modules-broken-links/22051 "2022-02-19T01:31:14Z")

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Hi, I’m going through some registration examples on 3Dslicer with different modules. I noticed that pretty much all the links of Plastimatch Modules are broken. I am wondering if someone could fix this?

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## [Help with memory management](https://discourse.slicer.org/t/help-with-memory-management/22021)

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**Author:** [@bcolbert](https://discourse.slicer.org/u/bcolbert)\
**Replies:** 2\
**Last updated:** [February 18, 2022, 4:57pm UTC](https://discourse.slicer.org/t/help-with-memory-management/22021 "2022-02-18T16:57:01Z")

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This is kind of a follow-up from my previous question. I have stopped saving mrb and am saving and loading nrrd files. But these are still very large (4gb). No issues with saving but I am having issues with segmenting. I…

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## [Trying to export transformed series, transformation is not present in exported series](https://discourse.slicer.org/t/trying-to-export-transformed-series-transformation-is-not-present-in-exported-series/21789)

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**Author:** [@JuliusJ](https://discourse.slicer.org/u/JuliusJ)\
**Replies:** 3\
**Last updated:** [February 18, 2022, 4:55pm UTC](https://discourse.slicer.org/t/trying-to-export-transformed-series-transformation-is-not-present-in-exported-series/21789 "2022-02-18T16:55:01Z")

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I’m new to Slicer and I’m trying to accomplish fairly simple things. Please explain things like I’m five years old. I’m using version 4.13.0-2022-01-28 r30570 / 0130983 on Mac OS Catalina. I have an MRI study where the …

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## [Error on first Run](https://discourse.slicer.org/t/error-on-first-run/22048)

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**Author:** [@Trystan](https://discourse.slicer.org/u/Trystan)\
**Replies:** 7\
**Last updated:** [February 18, 2022, 4:53pm UTC](https://discourse.slicer.org/t/error-on-first-run/22048 "2022-02-18T16:53:38Z")

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Hello all, I’m posting this cry for help on behalf my work colleague who would like to use Slicer for his Medical research work. On starting Slicer we are presented with this message: Graphics capabilities of this co…

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## [Clear mask popup in segmentation](https://discourse.slicer.org/t/clear-mask-popup-in-segmentation/22013)

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**Author:** [@Shahnawaz\_Vora](https://discourse.slicer.org/u/Shahnawaz_Vora)\
**Replies:** 3\
**Last updated:** [February 18, 2022, 5:00am UTC](https://discourse.slicer.org/t/clear-mask-popup-in-segmentation/22013 "2022-02-18T05:00:35Z")

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Operating system: windows 10 Slicer version: 4.13 Actual behavior: Currently on right clicking and in menu select clear selected segments it will show pop up and prompt to user for clear the selected mask(Yes/No) . E…

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## [Matching segmentations to input volumes](https://discourse.slicer.org/t/matching-segmentations-to-input-volumes/21927)

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**Author:** [@paullane](https://discourse.slicer.org/u/paullane)\
**Replies:** 2\
**Last updated:** [February 18, 2022, 1:29am UTC](https://discourse.slicer.org/t/matching-segmentations-to-input-volumes/21927 "2022-02-18T01:29:23Z")

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Hi, I am curious if there is a module to match segmentations to input volume images in order to train a neural network? I have converted DICOM to PNG and converted segmented images into labelmaps and numpy arrays. The …

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## [Segment Editor Threshold effect creates large blocks](https://discourse.slicer.org/t/segment-editor-threshold-effect-creates-large-blocks/22034)

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**Author:** [@Andreza](https://discourse.slicer.org/u/Andreza)\
**Replies:** 2\
**Last updated:** [February 18, 2022, 1:17am UTC](https://discourse.slicer.org/t/segment-editor-threshold-effect-creates-large-blocks/22034 "2022-02-18T01:17:40Z")

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Hi, I tried to do a new segmentation and the software returned for 4 times with a failed segmentation. I couldn’t also get the 3D reconstruction and I press “Show 3D”

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## [New feature: Basic support for physically based rendering (PBR)](https://discourse.slicer.org/t/new-feature-basic-support-for-physically-based-rendering-pbr/21725)

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**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 16\
**Last updated:** [February 18, 2022, 12:37am UTC](https://discourse.slicer.org/t/new-feature-basic-support-for-physically-based-rendering-pbr/21725 "2022-02-18T00:37:00Z")

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VTK (Slicer’s rendering library) added support for physically based rendering (PBR) in recent versions. See some examples in these blog posts: PBR basics, image-based lighting, coats. We exposed some of these features in…

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## [Does 3D slicer allow annotation metadata?](https://discourse.slicer.org/t/does-3d-slicer-allow-annotation-metadata/22023)

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**Author:** [@alex\_ndre](https://discourse.slicer.org/u/alex_ndre)\
**Replies:** 1\
**Last updated:** [February 17, 2022, 7:39pm UTC](https://discourse.slicer.org/t/does-3d-slicer-allow-annotation-metadata/22023 "2022-02-17T19:39:26Z")

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hello, and first of all thanks to those who will take the time to answer. In our current workflow, it is possible for several people to annotate the same 3D data. In order to have a better traceability, is it possible t…

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## [Re-defining the axial, sagittal or coronal slice orientation using a markup-plane](https://discourse.slicer.org/t/re-defining-the-axial-sagittal-or-coronal-slice-orientation-using-a-markup-plane/21733)

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**Author:** [@Benjamin\_T](https://discourse.slicer.org/u/Benjamin_T)\
**Replies:** 2\
**Last updated:** [February 17, 2022, 3:06pm UTC](https://discourse.slicer.org/t/re-defining-the-axial-sagittal-or-coronal-slice-orientation-using-a-markup-plane/21733 "2022-02-17T15:06:14Z")

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Dear support team, I am currently working on cervical segmentations and find that quite a few of these CTs are not aligned correctly (meaning neck being turned left/right/back/forth). As I am analyzing 2D-segmentations …

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## [Adding or populate header in nrrd or seg.nrrd](https://discourse.slicer.org/t/adding-or-populate-header-in-nrrd-or-seg-nrrd/20689)

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**Author:** [@phcerdan](https://discourse.slicer.org/u/phcerdan)\
**Replies:** 2\
**Last updated:** [February 17, 2022, 12:07am UTC](https://discourse.slicer.org/t/adding-or-populate-header-in-nrrd-or-seg-nrrd/20689 "2022-02-17T00:07:35Z")

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Is there any interface to add a custom header to a nrrd from Slicer, i.e: quality:=incomplete, or populate a predefined existing header to a Segmentation image (seg.nrrd)? If not with GUI, with slicer python would be ok…

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## [Ability to build external software packages when building 3DSlicer?](https://discourse.slicer.org/t/ability-to-build-external-software-packages-when-building-3dslicer/21993)

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**Author:** [@shahrokh](https://discourse.slicer.org/u/shahrokh)\
**Replies:** 0\
**Last updated:** [February 16, 2022, 2:02pm UTC](https://discourse.slicer.org/t/ability-to-build-external-software-packages-when-building-3dslicer/21993 "2022-02-16T14:02:58Z")

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Dear Developers and Users I have packages that use CMake to compile and install them. I did the steps of building them independently on Ubuntu 20.04 with commands such as cmake and make successfully. Also I built 3DSlic…

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## [How to load dicom files separately for axial, coronal and sagittal views?](https://discourse.slicer.org/t/how-to-load-dicom-files-separately-for-axial-coronal-and-sagittal-views/21988)

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**Author:** [@rasunag27](https://discourse.slicer.org/u/rasunag27)\
**Replies:** 0\
**Last updated:** [February 16, 2022, 3:29am UTC](https://discourse.slicer.org/t/how-to-load-dicom-files-separately-for-axial-coronal-and-sagittal-views/21988 "2022-02-16T03:29:54Z")

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Dear All, I have some ‘jpg’ image file which was extracted from 3D numerical simulations. I images are extracted in all 3 views (Axial, Coronal and Sagittal). Now, I converted these images to dicom files based on standa…

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