# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=295

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

**Page:** 296

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## [dicom file issue with virtual surgery planning software](https://discourse.slicer.org/t/dicom-file-issue-with-virtual-surgery-planning-software/16180)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 3\
**Last updated:** [February 26, 2021, 1:58pm UTC](https://discourse.slicer.org/t/dicom-file-issue-with-virtual-surgery-planning-software/16180 "2021-02-26T13:58:48Z")

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I use IPS case planner for facial surgery planning. i have issues with uploading medical ct images .dcm , error "no valid data set is recognized " it only accepts dicom exported from Cone beam CT. which usually comes a…

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## [Loading saved mrb file doesn't work](https://discourse.slicer.org/t/loading-saved-mrb-file-doesnt-work/16125)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 7\
**Last updated:** [February 26, 2021, 1:55pm UTC](https://discourse.slicer.org/t/loading-saved-mrb-file-doesnt-work/16125 "2021-02-26T13:55:04Z")

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I’m trying to .mrb file i made. however, that doesn’t do anything at all. can’t figure out the issue, thnak you for help!

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## [Is there an issue with the extension catalogue infrastructure?](https://discourse.slicer.org/t/is-there-an-issue-with-the-extension-catalogue-infrastructure/16224)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [February 26, 2021, 1:50pm UTC](https://discourse.slicer.org/t/is-there-an-issue-with-the-extension-catalogue-infrastructure/16224 "2021-02-26T13:50:20Z")

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throughout the day it was very slow or unresponsive at times (like right now). @jcfr @Sam\_Horvath

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## [Problem in adding RT Dose volumes with SimpleFilters module](https://discourse.slicer.org/t/problem-in-adding-rt-dose-volumes-with-simplefilters-module/16223)

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**Author:** [@aseman](https://discourse.slicer.org/u/aseman)\
**Replies:** 1\
**Last updated:** [February 26, 2021, 1:38pm UTC](https://discourse.slicer.org/t/problem-in-adding-rt-dose-volumes-with-simplefilters-module/16223 "2021-02-26T13:38:06Z")

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Slicer version:4.11 Hi 3d slicer experts and all I have 4 RT Doses that I have exported them from Treatment Planning System(TPS). the prescribed dose for this patient is 70Gy; and the sum of these 4 doses in TPS is 70…

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## [Can I switch tube to poind cloud?](https://discourse.slicer.org/t/can-i-switch-tube-to-poind-cloud/16213)

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**Author:** [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)\
**Replies:** 5\
**Last updated:** [February 26, 2021, 1:09pm UTC](https://discourse.slicer.org/t/can-i-switch-tube-to-poind-cloud/16213 "2021-02-26T13:09:48Z")

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I created a tube from two points, and I need show it in PLC as a pointCloud. Can I resample it as a pointcloud file(Just many points vtx coordinate). I exported cube as a ply but the file is still be a mesh model.

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## [Issue with Sequences extension in Slicer](https://discourse.slicer.org/t/issue-with-sequences-extension-in-slicer/16236)

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**Author:** [@IGT\_User\_UC3M](https://discourse.slicer.org/u/IGT_User_UC3M)\
**Replies:** 0\
**Last updated:** [February 26, 2021, 12:44pm UTC](https://discourse.slicer.org/t/issue-with-sequences-extension-in-slicer/16236 "2021-02-26T12:44:29Z")

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Operating system: Windows 10 Slicer version: 4.11.20200930 I want to use the 3D Slicer version 4.11.20200930 and the Sequences Extension and Module to record a sequence. The sequence is a video captured with an IntelRe…

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## [Difference in Hausdorff distance from RT structure set dependent on Version](https://discourse.slicer.org/t/difference-in-hausdorff-distance-from-rt-structure-set-dependent-on-version/16232)

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**Author:** [@Matt\_B](https://discourse.slicer.org/u/Matt_B)\
**Replies:** 0\
**Last updated:** [February 26, 2021, 10:30am UTC](https://discourse.slicer.org/t/difference-in-hausdorff-distance-from-rt-structure-set-dependent-on-version/16232 "2021-02-26T10:30:30Z")

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I was originally using V4.10.2 and have now changed to V4.11.20200930 and noticed difference in the Hausdorff distance (and DICE) metrics. In the earlier version importing an RT structure set would allow calculation of …

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## [Dicom conver to Nii](https://discourse.slicer.org/t/dicom-conver-to-nii/16108)

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**Author:** [@samsonaie](https://discourse.slicer.org/u/samsonaie)\
**Replies:** 1\
**Last updated:** [February 26, 2021, 7:29am UTC](https://discourse.slicer.org/t/dicom-conver-to-nii/16108 "2021-02-26T07:29:06Z")

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Hi, There, I have a challenge that when I use 3D slicer to convert a ultrason DICOM files to nii files. I lost the quality of image by a new ultrason probe ( comparing to a probe we used before). In the past, we have b…

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## [Curved planar Reformat Resampling transformation](https://discourse.slicer.org/t/curved-planar-reformat-resampling-transformation/16182)

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**Author:** [@FloCo](https://discourse.slicer.org/u/FloCo)\
**Replies:** 4\
**Last updated:** [February 26, 2021, 7:17am UTC](https://discourse.slicer.org/t/curved-planar-reformat-resampling-transformation/16182 "2021-02-26T07:17:08Z")

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Hi everyone, I have been trying to do a curved planar reformat for a while until I discovered the Curved Planar Reformat module recently which does exactly what I need so thank you for this module ! Since I tried to im…

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## [Problem in slicing a stl file to tiff/PNG/jpeg stack](https://discourse.slicer.org/t/problem-in-slicing-a-stl-file-to-tiff-png-jpeg-stack/16179)

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**Author:** [@Mehrdad](https://discourse.slicer.org/u/Mehrdad)\
**Replies:** 3\
**Last updated:** [February 26, 2021, 3:57am UTC](https://discourse.slicer.org/t/problem-in-slicing-a-stl-file-to-tiff-png-jpeg-stack/16179 "2021-02-26T03:57:28Z")

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Dear Support Team, I have stl file of packing of angular particles. The cubic packing size is 400 voxels and the voxel size is 0.03111 mm. I need to convert the stl file to the tiff stack with 400 slices and a pixel siz…

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## [How do you measure the area and display it in the views](https://discourse.slicer.org/t/how-do-you-measure-the-area-and-display-it-in-the-views/16089)

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**Author:** [@kira-snow](https://discourse.slicer.org/u/kira-snow)\
**Replies:** 3\
**Last updated:** [February 26, 2021, 2:49am UTC](https://discourse.slicer.org/t/how-do-you-measure-the-area-and-display-it-in-the-views/16089 "2021-02-26T02:49:04Z")

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Can the area measurement display be displayed in the views as well as the Angle display?like this.

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## [new to dose comparison module](https://discourse.slicer.org/t/new-to-dose-comparison-module/16226)

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**Author:** [@philipm](https://discourse.slicer.org/u/philipm)\
**Replies:** 0\
**Last updated:** [February 26, 2021, 1:26am UTC](https://discourse.slicer.org/t/new-to-dose-comparison-module/16226 "2021-02-26T01:26:39Z")

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Operating system: windows Slicer version: 4.11 Expected behavior: Actual behavior: Just downloaded 3D slicer today - I am wanting to compare dose distributions via gamma analysis using the Dose Comparison module. I a…

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## [Adding a file browser tab to the Data module](https://discourse.slicer.org/t/adding-a-file-browser-tab-to-the-data-module/16187)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 4\
**Last updated:** [February 25, 2021, 8:51pm UTC](https://discourse.slicer.org/t/adding-a-file-browser-tab-to-the-data-module/16187 "2021-02-25T20:51:12Z")

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I think Data module is becoming more and more important to the user experience, but opening data set is still happening outside of the data module. I am wondering if it is feasible to implement a file browser section wit…

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## [Metal artifact reduction (MAR) of CT development](https://discourse.slicer.org/t/metal-artifact-reduction-mar-of-ct-development/16200)

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**Author:** [@full\_stack\_master](https://discourse.slicer.org/u/full_stack_master)\
**Replies:** 5\
**Last updated:** [February 25, 2021, 1:18pm UTC](https://discourse.slicer.org/t/metal-artifact-reduction-mar-of-ct-development/16200 "2021-02-25T13:18:46Z")

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I want to get the function of MAR I have developed the MAR function in my end but it takes much time (30 mins) I have used the 400 DICOM files for testing I want to reduce running time from 30mins to 1 min this is th…

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## [Calculate axis of rotation](https://discourse.slicer.org/t/calculate-axis-of-rotation/15871)

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**Author:** [@Selva](https://discourse.slicer.org/u/Selva)\
**Replies:** 17\
**Last updated:** [February 25, 2021, 6:45am UTC](https://discourse.slicer.org/t/calculate-axis-of-rotation/15871 "2021-02-25T06:45:28Z")

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Hi Could I ask if there someone has a code to calculate the axis of rotation please. I have two STL files, bones, which has moved from time point 1 to time point 2. I want to calculate the displacement. So I calculate…

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## [Nrrd vs nii regarding affine data and transforms](https://discourse.slicer.org/t/nrrd-vs-nii-regarding-affine-data-and-transforms/1896)

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**Author:** [@NaglisR](https://discourse.slicer.org/u/NaglisR)\
**Replies:** 23\
**Last updated:** [February 25, 2021, 5:52am UTC](https://discourse.slicer.org/t/nrrd-vs-nii-regarding-affine-data-and-transforms/1896 "2021-02-25T05:52:44Z")

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Hi everyone, I’ve noticed that after preforming brain registration task, if I save the resulting output file (after transform hardening) as a nrrd file and afterwards load the saved file to slicer, the loaded file is tr…

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## [Can't install Osteotomy Planner extension](https://discourse.slicer.org/t/cant-install-osteotomy-planner-extension/16149)

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**Author:** [@skylar](https://discourse.slicer.org/u/skylar)\
**Replies:** 3\
**Last updated:** [February 25, 2021, 5:47am UTC](https://discourse.slicer.org/t/cant-install-osteotomy-planner-extension/16149 "2021-02-25T05:47:38Z")

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Operating system: Windows 10 19042 Slicer version: 4.11.20200930 Expected behavior: Find extension in Extension Manager Actual behavior: Extension Manager does not show Osteotomy Planner extension

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## [DICOM file, voxel size](https://discourse.slicer.org/t/dicom-file-voxel-size/16202)

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**Author:** [@jhostage](https://discourse.slicer.org/u/jhostage)\
**Replies:** 1\
**Last updated:** [February 25, 2021, 5:34am UTC](https://discourse.slicer.org/t/dicom-file-voxel-size/16202 "2021-02-25T05:34:29Z")

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Hello - wondering if anyone knows if voxel size in DICOM file of US images will be maintained if the DICOM file is converted to a NIfTI file using slicer. Thank you!

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## [CT/ Metal Artefact ](https://discourse.slicer.org/t/ct-metal-artefact/15838)

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**Author:** [@igaschi](https://discourse.slicer.org/u/igaschi)\
**Replies:** 7\
**Last updated:** [February 5, 2021, 4:37pm UTC](https://discourse.slicer.org/t/ct-metal-artefact/15838 "2021-02-05T16:37:15Z")

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How can I remove metal artifacts from CT? Which plugin should I use?

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## [Send customized data over OpenIGTLink](https://discourse.slicer.org/t/send-customized-data-over-openigtlink/16163)

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**Author:** [@priya.vada4](https://discourse.slicer.org/u/priya.vada4)\
**Replies:** 7\
**Last updated:** [February 24, 2021, 4:48pm UTC](https://discourse.slicer.org/t/send-customized-data-over-openigtlink/16163 "2021-02-24T16:48:56Z")

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Hi Is it possible to send a customized polydata over OpenIGTLink. In an earlier version, I was able to send the data by setting the igtl::PolyDataMessage::Pointer and then sending the data by directly calling vtkMRMLIGT…

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## [threshold masks ](https://discourse.slicer.org/t/threshold-masks/16181)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 0\
**Last updated:** [February 24, 2021, 1:38pm UTC](https://discourse.slicer.org/t/threshold-masks/16181 "2021-02-24T13:38:27Z")

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is it possible to save a mask made by thresholding ? i use different masks for different segments , when i go back i gave to make the threshold mask all over , is there a way around that ? thanks

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## [Merging two modules](https://discourse.slicer.org/t/merging-two-modules/16161)

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**Author:** [@will\_kim](https://discourse.slicer.org/u/will_kim)\
**Replies:** 2\
**Last updated:** [February 24, 2021, 5:12am UTC](https://discourse.slicer.org/t/merging-two-modules/16161 "2021-02-24T05:12:37Z")

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Hi rather new to Slicer and have two general questions. I have two scripted modules that share common information. So is there a way I can load this information for one module and it gets automatically uploads to the oth…

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## [.vol files not getting loaded](https://discourse.slicer.org/t/vol-files-not-getting-loaded/8483)

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**Author:** [@deepz](https://discourse.slicer.org/u/deepz)\
**Replies:** 19\
**Last updated:** [February 23, 2021, 11:36pm UTC](https://discourse.slicer.org/t/vol-files-not-getting-loaded/8483 "2021-02-23T23:36:12Z")

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Hello Guys, I wanted to load .vol files in slicer 3d. I kept the mode as Volume only. But when I drag n drop it, all the planes are dark . I have attached a picture too. Kindly share your thoughts on it . Thanks in adva…

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## [Where can I find knee CT/MRI image?](https://discourse.slicer.org/t/where-can-i-find-knee-ct-mri-image/15243)

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**Author:** [@arankenny](https://discourse.slicer.org/u/arankenny)\
**Replies:** 7\
**Last updated:** [February 23, 2021, 11:34pm UTC](https://discourse.slicer.org/t/where-can-i-find-knee-ct-mri-image/15243 "2021-02-23T23:34:36Z")

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Hi, I’m a final year biomedical engineering student and have just started using 3D-Slicer for my final year project. Could anyone tell me how I import DICOM files or is there somewhere online that I can find them. I need…

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## [Scalar range not updating for live stream volume](https://discourse.slicer.org/t/scalar-range-not-updating-for-live-stream-volume/16122)

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**Author:** [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Replies:** 5\
**Last updated:** [February 23, 2021, 9:12pm UTC](https://discourse.slicer.org/t/scalar-range-not-updating-for-live-stream-volume/16122 "2021-02-23T21:12:26Z")

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I am live streaming a volume over OpenIGTLink into Slicer (latest preview) using the SlicerOpenIGTLink (latest) extension. I’m noticing that the scalar range for the volume node is not updating for new image data. The be…

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## [Slicer-4.11.20200930: Can't import pip-installed Pillow on Linux](https://discourse.slicer.org/t/slicer-4-11-20200930-cant-import-pip-installed-pillow-on-linux/14448)

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**Author:** [@Fernando](https://discourse.slicer.org/u/Fernando)\
**Replies:** 7\
**Last updated:** [February 23, 2021, 4:13pm UTC](https://discourse.slicer.org/t/slicer-4-11-20200930-cant-import-pip-installed-pillow-on-linux/14448 "2021-02-23T16:13:59Z")

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Hi all, I can’t run the line below in the current Linux stable (and preview) release, after running pip\_install('Pillow'): \>\>\> from PIL import Image Traceback (most recent call last): File "\<console\>", line 1, in \<mo…

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## [How to get the Needle model tip position in the World coordinate？](https://discourse.slicer.org/t/how-to-get-the-needle-model-tip-position-in-the-world-coordinate/16156)

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**Author:** [@chenyx](https://discourse.slicer.org/u/chenyx)\
**Replies:** 4\
**Last updated:** [February 23, 2021, 2:40pm UTC](https://discourse.slicer.org/t/how-to-get-the-needle-model-tip-position-in-the-world-coordinate/16156 "2021-02-23T14:40:14Z")

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Dear friends， i wanna get the position of the needle model which created by the module “IGT/CreateModels”

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## [Export of binary masks not working](https://discourse.slicer.org/t/export-of-binary-masks-not-working/16146)

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**Author:** [@lekremer](https://discourse.slicer.org/u/lekremer)\
**Replies:** 5\
**Last updated:** [February 23, 2021, 2:52am UTC](https://discourse.slicer.org/t/export-of-binary-masks-not-working/16146 "2021-02-23T02:52:46Z")

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I have created multiple segmentations on a 3D MR volume of coronal images. when creating a binary label map of the segmentation and then exporting as dicom, the number of the sequence of images correlate to the pixel val…

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## [How to describe the position relationship between lung tumor and trachea](https://discourse.slicer.org/t/how-to-describe-the-position-relationship-between-lung-tumor-and-trachea/16059)

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**Author:** [@zzm](https://discourse.slicer.org/u/zzm)\
**Replies:** 3\
**Last updated:** [February 23, 2021, 2:20am UTC](https://discourse.slicer.org/t/how-to-describe-the-position-relationship-between-lung-tumor-and-trachea/16059 "2021-02-23T02:20:45Z")

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Operating system: Slicer version: Expected behavior: After the lung and trachea are separated, what parameters describe their position relationship Actual behavior:

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## [3D colored model to segmentations](https://discourse.slicer.org/t/3d-colored-model-to-segmentations/16139)

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**Author:** [@inesdfelix](https://discourse.slicer.org/u/inesdfelix)\
**Replies:** 0\
**Last updated:** [February 22, 2021, 6:34pm UTC](https://discourse.slicer.org/t/3d-colored-model-to-segmentations/16139 "2021-02-22T18:34:46Z")

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I have a 3D model with regions of interest (ROIs) identified with different vertex/face colors. I can see the colored model in Slicer by enabling “Visible” in the Scalars section in Models module. Screenshot bellow for r…

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