# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=171

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

**Page:** 172

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## [Segmentation with spatial resolution different than the source volume](https://discourse.slicer.org/t/segmentation-with-spatial-resolution-different-than-the-source-volume/28582)

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**Author:** [@Spiros\_Karkavitsas](https://discourse.slicer.org/u/Spiros_Karkavitsas)\
**Replies:** 1\
**Last updated:** [March 26, 2023, 4:10am UTC](https://discourse.slicer.org/t/segmentation-with-spatial-resolution-different-than-the-source-volume/28582 "2023-03-26T04:10:00Z")

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Hello all This conversation was an inspiration of the following issue I am facing now with segments:) I have done so far an air segmentation with spatial resolution different than the master volume . Air segmentation w…

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## [3DSlicer to Bonemat, unable to detect in Bonemat](https://discourse.slicer.org/t/3dslicer-to-bonemat-unable-to-detect-in-bonemat/28577)

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**Author:** [@tjjay17](https://discourse.slicer.org/u/tjjay17)\
**Replies:** 1\
**Last updated:** [March 26, 2023, 3:30am UTC](https://discourse.slicer.org/t/3dslicer-to-bonemat-unable-to-detect-in-bonemat/28577 "2023-03-26T03:30:51Z")

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Hi, Extremely new to the domain, so please excuse me if I’m confused on things. I had a 3DSlicer segmentation of a vertebra given in STL format, which I took and cleaned up in ANSYS Spaceclaim. I then meshed it in ANSY…

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## [How to calculate 3D line-line interesction?](https://discourse.slicer.org/t/how-to-calculate-3d-line-line-interesction/26645)

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**Author:** [@nnzzll](https://discourse.slicer.org/u/nnzzll)\
**Replies:** 4\
**Last updated:** [March 25, 2023, 1:56pm UTC](https://discourse.slicer.org/t/how-to-calculate-3d-line-line-interesction/26645 "2023-03-25T13:56:55Z")

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I got 2 infinite lines and each line was defined by two points. I’m trying to compute the intersection of the two lines with code below: img1Line1P1 = \[35.522341272816135, 244.0, -81.8808026069687\] img1Line1P2 = \[36.18…

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## [How To Calculate The SUV](https://discourse.slicer.org/t/how-to-calculate-the-suv/16831)

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**Author:** [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Replies:** 6\
**Last updated:** [March 24, 2023, 2:51pm UTC](https://discourse.slicer.org/t/how-to-calculate-the-suv/16831 "2023-03-24T14:51:02Z")

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Operating system: windows Slicer version: 4.13 Expected behavior: can calculate the value SUV in y segmentation. Actual behavior: Hi, I have contour volume in PET image. I want to know about the SUV. I used the Pet S…

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## [Creating contours from radiomic features](https://discourse.slicer.org/t/creating-contours-from-radiomic-features/28541)

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**Author:** [@Zeynep\_Cetin](https://discourse.slicer.org/u/Zeynep_Cetin)\
**Replies:** 1\
**Last updated:** [March 24, 2023, 4:35am UTC](https://discourse.slicer.org/t/creating-contours-from-radiomic-features/28541 "2023-03-24T04:35:12Z")

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I want to contour the lung according to the Radiomics feature results. Is there a tool for me to do this? Or will I have to use Pyradiomics? Thanks.

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## [Rendered Volume doesn't show up in the Filtering Input Volume Section](https://discourse.slicer.org/t/rendered-volume-doesnt-show-up-in-the-filtering-input-volume-section/28545)

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**Author:** [@Ibrahim\_Dolas](https://discourse.slicer.org/u/Ibrahim_Dolas)\
**Replies:** 1\
**Last updated:** [March 24, 2023, 4:32am UTC](https://discourse.slicer.org/t/rendered-volume-doesnt-show-up-in-the-filtering-input-volume-section/28545 "2023-03-24T04:32:35Z")

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Operating system: MacOS Ventura 13.1 Slicer version: 5.2.2 Expected behavior: After rendering the volume and cropping the 3d view, when I go to the Filtering-\>Denoising-\>Gradient Anisotropic Diffusion menu, I should se…

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## [Web-browser add-on to open a data file URL direclty into 3D Slicer and online viewers](https://discourse.slicer.org/t/web-browser-add-on-to-open-a-data-file-url-direclty-into-3d-slicer-and-online-viewers/28542)

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**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 2\
**Last updated:** [March 23, 2023, 1:15pm UTC](https://discourse.slicer.org/t/web-browser-add-on-to-open-a-data-file-url-direclty-into-3d-slicer-and-online-viewers/28542 "2023-03-23T13:15:40Z")

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You may install the Kitware File Viewers extension from one of the following web stores: Chrome Firefox Edge To learn more: https://www.kitware.com/kitware-file-viewers-browser-add-on/ GitHub - KitwareMedical/Kitwar…

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## [Two different volumes of the same segment](https://discourse.slicer.org/t/two-different-volumes-of-the-same-segment/28539)

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**Author:** [@Nuria\_Gallego\_Fndz](https://discourse.slicer.org/u/Nuria_Gallego_Fndz)\
**Replies:** 0\
**Last updated:** [March 23, 2023, 12:00pm UTC](https://discourse.slicer.org/t/two-different-volumes-of-the-same-segment/28539 "2023-03-23T12:00:10Z")

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Hi everyone! I’m trying to calculate the volume of different segments in the same scene. When I use the “segment statistics” I obtain a table with 2 differents values of volume of the same segment. (screenshot below) Do…

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## [Get mean intensities from "Closed Curve"](https://discourse.slicer.org/t/get-mean-intensities-from-closed-curve/28536)

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**Author:** [@little-ear](https://discourse.slicer.org/u/little-ear)\
**Replies:** 0\
**Last updated:** [March 23, 2023, 9:43am UTC](https://discourse.slicer.org/t/get-mean-intensities-from-closed-curve/28536 "2023-03-23T09:43:29Z")

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Dear all, I can not find the following feature: I am working with MRI images and need to mark pathologies with ROI (I like using “Closed Curve”). While I can select in “Measurements” to show the “Area”, it does not pro…

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## [Can I Link 3D widget by different position?](https://discourse.slicer.org/t/can-i-link-3d-widget-by-different-position/28533)

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**Author:** [@1023185654](https://discourse.slicer.org/u/1023185654)\
**Replies:** 2\
**Last updated:** [March 23, 2023, 6:31am UTC](https://discourse.slicer.org/t/can-i-link-3d-widget-by-different-position/28533 "2023-03-23T06:31:10Z")

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Hi, developers， I saw that slicer’s current 3D window link function can only support setting the focus, position and orientation of two cameras in the same parameter for link, If I want to see P and A linked, when I clic…

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## [MPR frame thickness and scroll angle on CT/CBCT scans?](https://discourse.slicer.org/t/mpr-frame-thickness-and-scroll-angle-on-ct-cbct-scans/28530)

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**Author:** [@ddii](https://discourse.slicer.org/u/ddii)\
**Replies:** 0\
**Last updated:** [March 22, 2023, 9:23pm UTC](https://discourse.slicer.org/t/mpr-frame-thickness-and-scroll-angle-on-ct-cbct-scans/28530 "2023-03-22T21:23:01Z")

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These things may be too basic but we really appreciate if you can help on this. What is the easiest way to change the frame/slicer thickness and scroll angle on CT/CBCT images? Change slice angle on all three planes ht…

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## [Segmentation effect doesn't excute](https://discourse.slicer.org/t/segmentation-effect-doesnt-excute/28526)

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**Author:** [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Replies:** 4\
**Last updated:** [March 22, 2023, 6:41pm UTC](https://discourse.slicer.org/t/segmentation-effect-doesnt-excute/28526 "2023-03-22T18:41:52Z")

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just noticed and want to report this annoying issue. it occasionally happens during segmentation that the effect doesn’t execute if you press enter or stop for whatever amount of time. the only way is to cancel and try…

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## [Construct a model of coronaries from CCTA scans](https://discourse.slicer.org/t/construct-a-model-of-coronaries-from-ccta-scans/28527)

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**Author:** [@smoudour](https://discourse.slicer.org/u/smoudour)\
**Replies:** 2\
**Last updated:** [March 22, 2023, 2:49pm UTC](https://discourse.slicer.org/t/construct-a-model-of-coronaries-from-ccta-scans/28527 "2023-03-22T14:49:00Z")

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Hi, I’m following the exact directions in the video and I get a weird ‘not-responding’ problem while I press ctrl+left click. It loads for some time (sometimes presenting ‘not responding’ status, and then program doesn’…

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## [Image registration nrrd files appear to be scaled differently despite adjusting scaling](https://discourse.slicer.org/t/image-registration-nrrd-files-appear-to-be-scaled-differently-despite-adjusting-scaling/28512)

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**Author:** [@elrond11](https://discourse.slicer.org/u/elrond11)\
**Replies:** 6\
**Last updated:** [March 22, 2023, 2:59am UTC](https://discourse.slicer.org/t/image-registration-nrrd-files-appear-to-be-scaled-differently-despite-adjusting-scaling/28512 "2023-03-22T02:59:36Z")

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I have been using 3D Slicer for rigid registration of two nrrd volumes. The first is an STL file that I have rasterized into an nrrd file within Slicer, this is the fixed image. The second nrrd file, moving image, has be…

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## [MonaiLabel and 3D Slicer Image together on one docker.](https://discourse.slicer.org/t/monailabel-and-3d-slicer-image-together-on-one-docker/28496)

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**Author:** [@lenlobo](https://discourse.slicer.org/u/lenlobo)\
**Replies:** 1\
**Last updated:** [March 21, 2023, 8:24pm UTC](https://discourse.slicer.org/t/monailabel-and-3d-slicer-image-together-on-one-docker/28496 "2023-03-21T20:24:12Z")

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Hello, I am quite new to Monai and Slicer, facing some difficulties here at the moment. I know there is a MonaiLabel docker image, and there is a 3dSlicer docker image. I want to run both of these together on a server a…

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## [Creat a circular ROI and extract count in PET image](https://discourse.slicer.org/t/creat-a-circular-roi-and-extract-count-in-pet-image/28501)

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**Author:** [@Shearson](https://discourse.slicer.org/u/Shearson)\
**Replies:** 2\
**Last updated:** [March 21, 2023, 8:17pm UTC](https://discourse.slicer.org/t/creat-a-circular-roi-and-extract-count-in-pet-image/28501 "2023-03-21T20:17:28Z")

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Dear members, I have a series of PET images of the same phantom. Now I’m trying to create a fixed size (like diameter=10mm) circular ROI in the same position of each series and extract the count or SUV. Is it possible or…

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## [Segmentations can get big!](https://discourse.slicer.org/t/segmentations-can-get-big/545)

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**Author:** [@Fernando](https://discourse.slicer.org/u/Fernando)\
**Replies:** 12\
**Last updated:** [October 23, 2019, 4:36pm UTC](https://discourse.slicer.org/t/segmentations-can-get-big/545 "2019-10-23T16:36:04Z")

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Hi all (specially @lassoan and @cpinter), I am working with a 2D segmentation. After saving it, I use Python to process the NRRD files. The size of my master volume node is 28320 x 15232, it's a scanned histological sl…

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## [Standard alignment for 3D surface models](https://discourse.slicer.org/t/standard-alignment-for-3d-surface-models/15657)

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**Author:** [@anromero](https://discourse.slicer.org/u/anromero)\
**Replies:** 7\
**Last updated:** [January 25, 2021, 7:46pm UTC](https://discourse.slicer.org/t/standard-alignment-for-3d-surface-models/15657 "2021-01-25T19:46:43Z")

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Operating system: iOS 11.1 Slicer version: 4.11.0 Expected behavior: Standardize alignment of 3D surface models before landmarking Actual behavior: Hello there, I’m using 3D Slicer to place fixed and semi-landmarks …

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## [Realign CT along the femur's centerline](https://discourse.slicer.org/t/realign-ct-along-the-femurs-centerline/14691)

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**Author:** [@BobbyZhang26](https://discourse.slicer.org/u/BobbyZhang26)\
**Replies:** 1\
**Last updated:** [March 21, 2023, 1:27pm UTC](https://discourse.slicer.org/t/realign-ct-along-the-femurs-centerline/14691 "2023-03-21T13:27:17Z")

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Hi, I have a sequence of CT scans of a patient’s femur. The original scans are aligned with conventional axial axis. I wish to realign the CT scan along the femur’s centerline which is a curve from condyles to the center…

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## [How can I know which control point is moved?](https://discourse.slicer.org/t/how-can-i-know-which-control-point-is-moved/28492)

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**Author:** [@nnzzll](https://discourse.slicer.org/u/nnzzll)\
**Replies:** 1\
**Last updated:** [March 21, 2023, 11:12am UTC](https://discourse.slicer.org/t/how-can-i-know-which-control-point-is-moved/28492 "2023-03-21T11:12:31Z")

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I am developing a C++ extension and my code goes like: qvtkConnect(fidNode, vtkMRMLMarkupsFiducialNode::PointEndInteractionEvent, this, SLOT(onPointMoved())); Since I have to do some operation according to control poin…

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## [Coronary DSA Segmentation](https://discourse.slicer.org/t/coronary-dsa-segmentation/28490)

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**Author:** [@DanteAngio8](https://discourse.slicer.org/u/DanteAngio8)\
**Replies:** 0\
**Last updated:** [March 21, 2023, 7:05am UTC](https://discourse.slicer.org/t/coronary-dsa-segmentation/28490 "2023-03-21T07:05:34Z")

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Hi Everyone, I have some coronary angiograms, and I wish to train a deep learning model segment coronary. Now I need to label them manually, so I wonder if there is any efficient plugins or tricks to do the task? Any su…

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## [ALPACA not working](https://discourse.slicer.org/t/alpaca-not-working/28488)

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**Author:** [@Gening\_Dong](https://discourse.slicer.org/u/Gening_Dong)\
**Replies:** 4\
**Last updated:** [March 21, 2023, 5:36am UTC](https://discourse.slicer.org/t/alpaca-not-working/28488 "2023-03-21T05:36:03Z")

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Hi all, I’m using the ALPACA in SlicerMorph to register two cardiac models. However, when I clicked “Run ALPACA”, no results were shown. (see the screenshot below) Here’s my steps: load two .stl files as the target a…

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## [Fullwaveform ultrasonic NDT dataset volume reconstruction and visualization](https://discourse.slicer.org/t/fullwaveform-ultrasonic-ndt-dataset-volume-reconstruction-and-visualization/5832)

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**Author:** [@padiyar](https://discourse.slicer.org/u/padiyar)\
**Replies:** 0\
**Last updated:** [February 19, 2019, 4:44pm UTC](https://discourse.slicer.org/t/fullwaveform-ultrasonic-ndt-dataset-volume-reconstruction-and-visualization/5832 "2019-02-19T16:44:03Z")

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I have a raw dataset of full waveform ultrasonic data across an area (NDT ultrasonic data-set). I want to convert this data to the 3D image matrix and slice it similar to the youtube video shown Real-time volume recon…

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## [Longitudinal brain registration](https://discourse.slicer.org/t/longitudinal-brain-registration/5297)

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**Author:** [@RadioQuest](https://discourse.slicer.org/u/RadioQuest)\
**Replies:** 1\
**Last updated:** [March 21, 2023, 3:05am UTC](https://discourse.slicer.org/t/longitudinal-brain-registration/5297 "2023-03-21T03:05:55Z")

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Hi… I want to perform registration of longitudinal scans of a patient with a brain tumour. These scans at later time points are distorted due to a tumour/surgery/growth. Baseline will be preoperative scan. Which will b…

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## ["Yes to all" for DICOM Repair database option](https://discourse.slicer.org/t/yes-to-all-for-dicom-repair-database-option/4575)

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**Author:** [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Replies:** 3\
**Last updated:** [March 21, 2023, 3:03am UTC](https://discourse.slicer.org/t/yes-to-all-for-dicom-repair-database-option/4575 "2023-03-21T03:03:55Z")

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The Repair function is very nice, but with large number of missing files, it is not usable, since “Yes” needs to be clicked for every item (probably, for every series). It would be very helpful if something to the effec…

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## [Trim background in slicer](https://discourse.slicer.org/t/trim-background-in-slicer/1119)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 4\
**Last updated:** [March 21, 2023, 2:50am UTC](https://discourse.slicer.org/t/trim-background-in-slicer/1119 "2023-03-21T02:50:13Z")

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Hi convert3d (c3d) tool has this nice feature called trim, which finds the smallest rectangular region of non-background voxels. I use quite a lot with masked images. In Slicer, Crop Volume gives a similar functionality…

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## [How to install the RegistrationQA extension](https://discourse.slicer.org/t/how-to-install-the-registrationqa-extension/12552)

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**Author:** [@toyama](https://discourse.slicer.org/u/toyama)\
**Replies:** 0\
**Last updated:** [July 15, 2020, 12:07pm UTC](https://discourse.slicer.org/t/how-to-install-the-registrationqa-extension/12552 "2020-07-15T12:07:02Z")

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I installed RegistrationQA to calculate ICE, Jacobian, and I want to. But there are a few things I don’t understand. ↑I did the operation of the red line in the work of II.2, but this is not enough to just download the…

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## [How to create a new folder?](https://discourse.slicer.org/t/how-to-create-a-new-folder/15353)

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**Author:** [@NoobForSlicer](https://discourse.slicer.org/u/NoobForSlicer)\
**Replies:** 2\
**Last updated:** [March 21, 2023, 2:38am UTC](https://discourse.slicer.org/t/how-to-create-a-new-folder/15353 "2023-03-21T02:38:24Z")

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How to create a new folder? I know it is a dumb question but if you have a lot of semgnetaions, there will be no space left where to click to create new folder… In order to create the folder i have to click on the blan…

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## [How to control the size of control points in ROI](https://discourse.slicer.org/t/how-to-control-the-size-of-control-points-in-roi/17839)

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**Author:** [@full\_stack\_master](https://discourse.slicer.org/u/full_stack_master)\
**Replies:** 2\
**Last updated:** [March 21, 2023, 2:33am UTC](https://discourse.slicer.org/t/how-to-control-the-size-of-control-points-in-roi/17839 "2023-03-21T02:33:44Z")

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I need to change the control points size in ROI Where and How can I control this size

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## [Maintenance of discourse forum planned today (March 20th) at 6pm ET (~15 min of read-only time)](https://discourse.slicer.org/t/maintenance-of-discourse-forum-planned-today-march-20th-at-6pm-et-15-min-of-read-only-time/28482)

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**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 1\
**Last updated:** [March 21, 2023, 2:29am UTC](https://discourse.slicer.org/t/maintenance-of-discourse-forum-planned-today-march-20th-at-6pm-et-15-min-of-read-only-time/28482 "2023-03-21T02:29:25Z")

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To better support our growing community (+200k page views / month), we are upgrading our subscription. As part of the upgrade, our current instance will have to be read-only for ~15min starting 6pm ET (22 UTC). @Sam\_…

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