# Latest

**URL:** https://discourse.slicer.org/latest.md?page=22

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

**Page:** 23

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## [Segmenting only within a ROI](https://discourse.slicer.org/t/segmenting-only-within-a-roi/46129)

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**Author:** [@jamie.miller.phd](https://discourse.slicer.org/u/jamie.miller.phd)\
**Replies:** 0\
**Last updated:** [February 12, 2026, 7:05am UTC](https://discourse.slicer.org/t/segmenting-only-within-a-roi/46129 "2026-02-12T07:05:17Z")

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Hi team, I am a novice user of 3D Slicer and trying to upskill. I have MRI images of the upper airway and I am trying to segment out only the airways (nasal and oral cavities). I have been using the threshold masking to …

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## [Regarding radius of centerline curve](https://discourse.slicer.org/t/regarding-radius-of-centerline-curve/46113)

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**Author:** [@Mudrika](https://discourse.slicer.org/u/Mudrika)\
**Replies:** 2\
**Last updated:** [February 11, 2026, 12:09pm UTC](https://discourse.slicer.org/t/regarding-radius-of-centerline-curve/46113 "2026-02-11T12:09:24Z")

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Hello everyone! I am extracting centerline curves from a 3D model of coronary arteries and further through centerline quantiifcation, radius of the arteries is calculated. Can someone please tell, is it the average radi…

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## [3D Slicer does not start as full screen](https://discourse.slicer.org/t/3d-slicer-does-not-start-as-full-screen/46122)

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**Author:** [@strider\_hunter](https://discourse.slicer.org/u/strider_hunter)\
**Replies:** 0\
**Last updated:** [February 11, 2026, 8:39am UTC](https://discourse.slicer.org/t/3d-slicer-does-not-start-as-full-screen/46122 "2026-02-11T08:39:38Z")

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When I startup up 3D Slicer, instead of occupying the full screen, it only occupies a smaller section (as seen in the screenshot below). I have a multi-monitor setup. I looked at a \`.ini\` files like slicer.org\\Slicer-…

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## [Breast PET/CT segmentation](https://discourse.slicer.org/t/breast-pet-ct-segmentation/46116)

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**Author:** [@Issa\_Abusaleh](https://discourse.slicer.org/u/Issa_Abusaleh)\
**Replies:** 1\
**Last updated:** [February 10, 2026, 9:16pm UTC](https://discourse.slicer.org/t/breast-pet-ct-segmentation/46116 "2026-02-10T21:16:38Z")

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I am writing to kindly request your guidance and support in learning segmentation techniques step by step, as I am currently working on a research project entitled: “PET/CT Predicting Treatment Response of Breast Cancer…

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## [2026.02.10 Weekly Meeting](https://discourse.slicer.org/t/2026-02-10-weekly-meeting/46076)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 1\
**Last updated:** [February 10, 2026, 4:35pm UTC](https://discourse.slicer.org/t/2026-02-10-weekly-meeting/46076 "2026-02-10T16:35:19Z")

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Next Tuesday, we will be having our next weekly hangout at 10:00 AM ET until 11:00 AM ET. Anyone is welcome to join at this link: https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Please post to this thread…

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## [Mimics to Slicer Masks and Models - Pre-Tracking Segmentation](https://discourse.slicer.org/t/mimics-to-slicer-masks-and-models-pre-tracking-segmentation/46111)

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**Author:** [@Shilpa\_Rao](https://discourse.slicer.org/u/Shilpa_Rao)\
**Replies:** 1\
**Last updated:** [February 10, 2026, 4:17pm UTC](https://discourse.slicer.org/t/mimics-to-slicer-masks-and-models-pre-tracking-segmentation/46111 "2026-02-10T16:17:36Z")

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I’m trying to repeat segmentation workflows from Mimics to Slicer, with the end-goal being tracking. In Mimics, there is a distinction between masks and models, where models are exported as VRML 2.0 files (then converte…

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## [Can you erase something in the sagittal plane, without affecting segmentations made in the axial plane?](https://discourse.slicer.org/t/can-you-erase-something-in-the-sagittal-plane-without-affecting-segmentations-made-in-the-axial-plane/46112)

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**Author:** [@Severin](https://discourse.slicer.org/u/Severin)\
**Replies:** 1\
**Last updated:** [February 10, 2026, 3:51pm UTC](https://discourse.slicer.org/t/can-you-erase-something-in-the-sagittal-plane-without-affecting-segmentations-made-in-the-axial-plane/46112 "2026-02-10T15:51:34Z")

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Hello everyone, My apologies, probably this has already been addressed previously and I am just not able to find the answer. I am using Slicer 3D (5.8) with Biomedisa and segmented every 20th slice in the axial plane. …

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## [How to overlay pre- and post-operative dental DICOM files to measure bone gain ?](https://discourse.slicer.org/t/how-to-overlay-pre-and-post-operative-dental-dicom-files-to-measure-bone-gain/46099)

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**Author:** [@Sont](https://discourse.slicer.org/u/Sont)\
**Replies:** 3\
**Last updated:** [February 10, 2026, 12:50pm UTC](https://discourse.slicer.org/t/how-to-overlay-pre-and-post-operative-dental-dicom-files-to-measure-bone-gain/46099 "2026-02-10T12:50:25Z")

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Hello, I would like to overlay two dental DICOM files (pre-operative and post-operative) following a bone graft in order to measure the volumetric bone gain (in mm and/or %). To perform these measurements, I would need …

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## [Strategies for working with large microCT files](https://discourse.slicer.org/t/strategies-for-working-with-large-microct-files/45847)

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**Author:** [@Antmaker](https://discourse.slicer.org/u/Antmaker)\
**Replies:** 6\
**Last updated:** [February 10, 2026, 12:18am UTC](https://discourse.slicer.org/t/strategies-for-working-with-large-microct-files/45847 "2026-02-10T00:18:36Z")

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Hi, I am working with microCT tiff stacks and currently it is 75GB when read into the software at full resolution. Following the general guideline of using a hardware with RAM 6x-10x that of the file is not attainable e…

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## [ADC images Quantifications ](https://discourse.slicer.org/t/adc-images-quantifications/46074)

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**Author:** [@a.altairan](https://discourse.slicer.org/u/a.altairan)\
**Replies:** 3\
**Last updated:** [February 9, 2026, 11:08pm UTC](https://discourse.slicer.org/t/adc-images-quantifications/46074 "2026-02-09T23:08:52Z")

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hello everyone I’m doing study involving Lumber spine, I’m trying to calculate the ADC mean and median values but I’m getting values with ( - ), how to overcome this issue ?

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## [DeCAL producing weird clustering of landmarks](https://discourse.slicer.org/t/decal-producing-weird-clustering-of-landmarks/46071)

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**Author:** [@raranda22](https://discourse.slicer.org/u/raranda22)\
**Replies:** 3\
**Last updated:** [February 9, 2026, 6:31pm UTC](https://discourse.slicer.org/t/decal-producing-weird-clustering-of-landmarks/46071 "2026-02-09T18:31:04Z")

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Hello, I have run DeCAL many times with a handful of meshes and curve semilandmarks from the MarkMyBird dataset. Each time, some of the surface landmarks cluster very closely together in strange ways. I would expect the…

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## [📣 SlicerModalityConverter - New update and models available](https://discourse.slicer.org/t/slicermodalityconverter-new-update-and-models-available/46098)

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**Author:** [@ciro.raggio](https://discourse.slicer.org/u/ciro.raggio)\
**Replies:** 0\
**Last updated:** [February 9, 2026, 3:00pm UTC](https://discourse.slicer.org/t/slicermodalityconverter-new-update-and-models-available/46098 "2026-02-09T15:00:57Z")

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We’ve expanded the ModalityConverter extension with two new AI models for medical image-to-image translation: CBCT to Synthetic CT (Head & Neck) CT to Synthetic PET (Chest), based on the study: Salehjahromi M, Karpine…

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## [Issues with scaling information added to .tiff volume- tried ImageStacks and saving as .nrrd?](https://discourse.slicer.org/t/issues-with-scaling-information-added-to-tiff-volume-tried-imagestacks-and-saving-as-nrrd/46084)

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**Author:** [@alsig](https://discourse.slicer.org/u/alsig)\
**Replies:** 10\
**Last updated:** [February 9, 2026, 12:10am UTC](https://discourse.slicer.org/t/issues-with-scaling-information-added-to-tiff-volume-tried-imagestacks-and-saving-as-nrrd/46084 "2026-02-09T00:10:01Z")

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Hi everyone, I am having a issue when trying to import/save TIFF data in a way that lets me add the scaling information. I have a single file ImageJ hyperstack .tiff that has my entire volume, with X-Y scale of 0.00128…

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## [Clinical DICOM loading error, PixelData larger than remaining bytes in file, but images look OK](https://discourse.slicer.org/t/clinical-dicom-loading-error-pixeldata-larger-than-remaining-bytes-in-file-but-images-look-ok/46077)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 3\
**Last updated:** [February 8, 2026, 10:44pm UTC](https://discourse.slicer.org/t/clinical-dicom-loading-error-pixeldata-larger-than-remaining-bytes-in-file-but-images-look-ok/46077 "2026-02-08T22:44:20Z")

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When I download an image series directly from our clinical PACS and import it into Slicer, I get the following error message repeated for each .dcm file: “E: DcmElement: PixelData (7fe0,0010) larger (4294967295) than re…

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## [Can beam hardening artefact be turned into a real looking vessel](https://discourse.slicer.org/t/can-beam-hardening-artefact-be-turned-into-a-real-looking-vessel/46085)

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**Author:** [@Vonni3](https://discourse.slicer.org/u/Vonni3)\
**Replies:** 6\
**Last updated:** [February 8, 2026, 8:15pm UTC](https://discourse.slicer.org/t/can-beam-hardening-artefact-be-turned-into-a-real-looking-vessel/46085 "2026-02-08T20:15:01Z")

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Hello I have what looks like connections from Superior Vena Cava to Aorta. They look real, but are they? They have vessel walls and curve.

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## [MONAI Auto3DSeg – inconsistent performance for vertebral body segmentation](https://discourse.slicer.org/t/monai-auto3dseg-inconsistent-performance-for-vertebral-body-segmentation/46081)

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**Author:** [@jchao](https://discourse.slicer.org/u/jchao)\
**Replies:** 1\
**Last updated:** [February 8, 2026, 4:31pm UTC](https://discourse.slicer.org/t/monai-auto3dseg-inconsistent-performance-for-vertebral-body-segmentation/46081 "2026-02-08T16:31:36Z")

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Hi everyone, I’m currently working with Prof. Ron Alkalay on a spine CT segmentation project using MONAI Auto3DSeg and would appreciate any advice from the community. My task is to segment only vertebral bodies. I refo…

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## [Surface model turns black under transformation](https://discourse.slicer.org/t/surface-model-turns-black-under-transformation/46065)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 4\
**Last updated:** [February 5, 2026, 7:01pm UTC](https://discourse.slicer.org/t/surface-model-turns-black-under-transformation/46065 "2026-02-05T19:01:19Z")

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When I reflect a model node using a linear transform node that has a reflection, the visualization of it in 3D unexpectedly turns black. I gather from other posts and LLM consultation that this is because a transform wi…

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## [Using the pyigtl Library to send data across a docker compose network](https://discourse.slicer.org/t/using-the-pyigtl-library-to-send-data-across-a-docker-compose-network/45859)

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**Author:** [@Oskey999](https://discourse.slicer.org/u/Oskey999)\
**Replies:** 5\
**Last updated:** [February 5, 2026, 12:02pm UTC](https://discourse.slicer.org/t/using-the-pyigtl-library-to-send-data-across-a-docker-compose-network/45859 "2026-02-05T12:02:59Z")

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Hello, I am trying to run SlicerTMS as two containers in a docker-compose but I am having issues using the pyigtl python library to send the data between the two containers. I have got a container to send the data from…

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## [Medical Image Segmentation (CT) of Frog Organs using 3D Slicer](https://discourse.slicer.org/t/medical-image-segmentation-ct-of-frog-organs-using-3d-slicer/45615)

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**Author:** [@Fyn\_nari](https://discourse.slicer.org/u/Fyn_nari)\
**Replies:** 6\
**Last updated:** [February 5, 2026, 11:46am UTC](https://discourse.slicer.org/t/medical-image-segmentation-ct-of-frog-organs-using-3d-slicer/45615 "2026-02-05T11:46:29Z")

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I am working on a research project focused on environmental radioprotection. The goal is to develop voxelized phantoms of terrestrial species to study the radiological effects of pollutants. I have a CT-scan series of a …

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## [How to merge two views from different DICOMs?](https://discourse.slicer.org/t/how-to-merge-two-views-from-different-dicoms/46061)

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**Author:** [@mrrezaie](https://discourse.slicer.org/u/mrrezaie)\
**Replies:** 2\
**Last updated:** [February 5, 2026, 10:58am UTC](https://discourse.slicer.org/t/how-to-merge-two-views-from-different-dicoms/46061 "2026-02-05T10:58:16Z")

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Hello, I have two DICOMs (EOS bi-plane x-ray); they are orthogonal and synchronized. The program failed to load them as series, I imported each one separately as a volume. Now, I want to merge them, but only one view of…

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## [Draw tube scripting](https://discourse.slicer.org/t/draw-tube-scripting/44495)

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**Author:** [@bserrano](https://discourse.slicer.org/u/bserrano)\
**Replies:** 5\
**Last updated:** [February 5, 2026, 9:28am UTC](https://discourse.slicer.org/t/draw-tube-scripting/44495 "2026-02-05T09:28:06Z")

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Hi all, I am trying to automate the “Draw Tube” effect in Segment Editor using Python, but I am stuck at two points: How to pass an existing centerline to the effect programmatically (similar to setting "Radius" or "…

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## [Cropping a Cylindrical Volume (Jar) in a Circular ROI](https://discourse.slicer.org/t/cropping-a-cylindrical-volume-jar-in-a-circular-roi/42750)

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**Author:** [@sieunmiin96](https://discourse.slicer.org/u/sieunmiin96)\
**Replies:** 3\
**Last updated:** [February 5, 2026, 9:22am UTC](https://discourse.slicer.org/t/cropping-a-cylindrical-volume-jar-in-a-circular-roi/42750 "2026-02-05T09:22:35Z")

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Hi, I’m working with MR images of Fricke gel jars and trying to isolate each jar for analysis. I’m currently using the Crop Volume module in 3D Slicer, but it only lets me define a rectangular ROI. Since the jars are cy…

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## [Transform Source to Target 3D Model](https://discourse.slicer.org/t/transform-source-to-target-3d-model/45999)

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**Author:** [@md.walten](https://discourse.slicer.org/u/md.walten)\
**Replies:** 7\
**Last updated:** [February 3, 2026, 10:52pm UTC](https://discourse.slicer.org/t/transform-source-to-target-3d-model/45999 "2026-02-03T22:52:26Z")

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Hello I am doing a research study with human bones where every bone has a little bit of different area das is marked and I would like to transform a source model exactly to a target bone so I can see the difference betw…

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## [2026.02.03 Weekly Meeting](https://discourse.slicer.org/t/2026-02-03-weekly-meeting/46044)

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**Author:** [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Replies:** 2\
**Last updated:** [February 3, 2026, 4:57pm UTC](https://discourse.slicer.org/t/2026-02-03-weekly-meeting/46044 "2026-02-03T16:57:13Z")

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Tomorrow, we will be having our next weekly hangout at 10:00 AM ET until 11:00 AM ET. Anyone is welcome to join at this link: https://bit.ly/slicer-googlemeet-hosted-by-kitware Agenda: Please post to this thread to …

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## [Slicer3d through TotalSegmentator airway segmentation limited to 1–2 generations – how to extend to distal bronchi (G4–G5)?](https://discourse.slicer.org/t/slicer3d-through-totalsegmentator-airway-segmentation-limited-to-1-2-generations-how-to-extend-to-distal-bronchi-g4-g5/45943)

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**Author:** [@hadrien\_calmet](https://discourse.slicer.org/u/hadrien_calmet)\
**Replies:** 1\
**Last updated:** [February 3, 2026, 4:20pm UTC](https://discourse.slicer.org/t/slicer3d-through-totalsegmentator-airway-segmentation-limited-to-1-2-generations-how-to-extend-to-distal-bronchi-g4-g5/45943 "2026-02-03T16:20:41Z")

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Hello everyone, I am working on airway segmentation from a chest CT scan using 3D Slicer and the TotalSegmentator extension. I successfully segmented the trachea and main bronchi, but the result is currently limited to…

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## [Lung segmentator not anymore in extensions. Any help?](https://discourse.slicer.org/t/lung-segmentator-not-anymore-in-extensions-any-help/46040)

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**Author:** [@MartinMD89](https://discourse.slicer.org/u/MartinMD89)\
**Replies:** 1\
**Last updated:** [February 3, 2026, 10:30am UTC](https://discourse.slicer.org/t/lung-segmentator-not-anymore-in-extensions-any-help/46040 "2026-02-03T10:30:42Z")

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Hi everyone, paediatric surgeon here. We are planning to perform an operation on a with CPAM and I wanted to create s segmentation of the lungs and the lesion. Some time ago, i used this lung segmentator extension. Now …

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## [Dental Segmentator not working with M1 Mac](https://discourse.slicer.org/t/dental-segmentator-not-working-with-m1-mac/46041)

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**Author:** [@nguyetun](https://discourse.slicer.org/u/nguyetun)\
**Replies:** 0\
**Last updated:** [February 3, 2026, 4:04am UTC](https://discourse.slicer.org/t/dental-segmentator-not-working-with-m1-mac/46041 "2026-02-03T04:04:48Z")

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I’ve downloaded Slicer 5.11 and the Dental Segmentator isn’t working. I’ve attached the error message.

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## [Saving parameter preset in ANTs extension changes initialization value](https://discourse.slicer.org/t/saving-parameter-preset-in-ants-extension-changes-initialization-value/45993)

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**Author:** [@sulli419](https://discourse.slicer.org/u/sulli419)\
**Replies:** 8\
**Last updated:** [February 3, 2026, 12:40am UTC](https://discourse.slicer.org/t/saving-parameter-preset-in-ants-extension-changes-initialization-value/45993 "2026-02-03T00:40:14Z")

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In the General ANTs 3D slicer extension I noticed something rather odd. I can take one of the default parameter presets, say “QuickSyn”, change nothing, and click “save as preset”. The new .json preset saves in the cor…

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## [📢 New 3D Slicer Extensions: KonfAI & IMPACT-Synth Reliable AI Synthetic CT and Segmentation with Integrated QA](https://discourse.slicer.org/t/new-3d-slicer-extensions-konfai-impact-synth-reliable-ai-synthetic-ct-and-segmentation-with-integrated-qa/46032)

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**Author:** [@vboussot](https://discourse.slicer.org/u/vboussot)\
**Replies:** 0\
**Last updated:** [February 2, 2026, 2:55pm UTC](https://discourse.slicer.org/t/new-3d-slicer-extensions-konfai-impact-synth-reliable-ai-synthetic-ct-and-segmentation-with-integrated-qa/46032 "2026-02-02T14:55:13Z")

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Dear All, We are happy to announce the release of two new open-source 3D Slicer extensions, KonfAI and IMPACT-Synth, which provide graphical interfaces to run AI tasks (such as segmentation and synthetic CT generation) …

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## [4DCT registration - Hierarchical 3D Registration not recognizing "Sequence"](https://discourse.slicer.org/t/4dct-registration-hierarchical-3d-registration-not-recognizing-sequence/46026)

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**Author:** [@taylor\_t](https://discourse.slicer.org/u/taylor_t)\
**Replies:** 0\
**Last updated:** [February 1, 2026, 6:38pm UTC](https://discourse.slicer.org/t/4dct-registration-hierarchical-3d-registration-not-recognizing-sequence/46026 "2026-02-01T18:38:30Z")

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I am trying to process 4DCT data using SlicerAutoscoper. I was able to load in the static CT images (Bone Thins Knee Bilateral), perform segmentations and export as STL files, and load in the 4D CT dynamic data (4D Knee\_…

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