# \#pet

**URL:** https://discourse.slicer.org/tag/pet/224.md

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

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## [SUV Quantification Voxel Values differing from Exported Values](https://discourse.slicer.org/t/suv-quantification-voxel-values-differing-from-exported-values/45756)

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**Author:** [@CSalt](https://discourse.slicer.org/u/CSalt)\
**Replies:** 0\
**Last updated:** [January 12, 2026, 6:32pm UTC](https://discourse.slicer.org/t/suv-quantification-voxel-values-differing-from-exported-values/45756 "2026-01-12T18:32:49Z")

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Hi, I am working on some voxel plots comparing a segmented PET region’s SUV values over multiple time points. When I use the segment statistics feature within slicer, I get SUV min/max/average values that match my clini…

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## [Pet/CT Scan DICOM files show "Reference image in series does not contain geometry information" error](https://discourse.slicer.org/t/pet-ct-scan-dicom-files-show-reference-image-in-series-does-not-contain-geometry-information-error/42027)

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**Author:** [@neutronstar](https://discourse.slicer.org/u/neutronstar)\
**Replies:** 1\
**Last updated:** [March 8, 2025, 12:50am UTC](https://discourse.slicer.org/t/pet-ct-scan-dicom-files-show-reference-image-in-series-does-not-contain-geometry-information-error/42027 "2025-03-08T00:50:39Z")

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Hi! I’m sorry I’m very new to 3d Slicer. I’m trying to 3d print one of my organs from my pet/ct scan. When I upload it to 3d slicer I can see the results, but I can’t see the 3d model. What should I do to fix this iss…

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## [Quantitative reporting not loading properly](https://discourse.slicer.org/t/quantitative-reporting-not-loading-properly/41092)

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**Author:** [@daniele\_rimini](https://discourse.slicer.org/u/daniele_rimini)\
**Replies:** 0\
**Last updated:** [January 15, 2025, 12:26pm UTC](https://discourse.slicer.org/t/quantitative-reporting-not-loading-properly/41092 "2025-01-15T12:26:51Z")

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Good morning, I have installed the “Quantitative reporting” extension to analyze the PET segments. However, when I load the extension, the interface doesn’t show any field (Test area, Segmentions). I got the following…

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## [Fusion MRI and PET](https://discourse.slicer.org/t/fusion-mri-and-pet/38388)

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**Author:** [@Pavel\_Pakhomov](https://discourse.slicer.org/u/Pavel_Pakhomov)\
**Replies:** 0\
**Last updated:** [September 15, 2024, 5:25am UTC](https://discourse.slicer.org/t/fusion-mri-and-pet/38388 "2024-09-15T05:25:20Z")

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Hello? i’m new user ) I have problems )) I have mri dicom (pelvis) and PET/CT FDG-psma scans I need to fuse T2 iso with PET images, and that save this to dicom for US-navigation; i used landmark registration, and i saw n…

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## [PET quantitative report](https://discourse.slicer.org/t/pet-quantitative-report/37358)

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**Author:** [@zahraa-rashid](https://discourse.slicer.org/u/zahraa-rashid)\
**Replies:** 0\
**Last updated:** [July 13, 2024, 7:55pm UTC](https://discourse.slicer.org/t/pet-quantitative-report/37358 "2024-07-13T19:55:28Z")

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i need help in 3d slicer version 5.6.2 when i make all the steps of pet image segmentation i can’t get the quantitative report can you make a video and explain this for me Operating system:win10 Slicer version:5.6.2 E…

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## [SUV quantification error](https://discourse.slicer.org/t/suv-quantification-error/34560)

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**Author:** [@david.gulis](https://discourse.slicer.org/u/david.gulis)\
**Replies:** 1\
**Last updated:** [February 27, 2024, 7:49pm UTC](https://discourse.slicer.org/t/suv-quantification-error/34560 "2024-02-27T19:49:33Z")

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Hi all, I am trying to quantify SUVs in segmented areas of a mouse PET/CT study, and it results in a blank table and the following error: I have tried modifying the metadata but I could not find some of the tags wit…

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## [PET lymph node automated segmentation ](https://discourse.slicer.org/t/pet-lymph-node-automated-segmentation/34329)

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**Author:** [@kjmkjw](https://discourse.slicer.org/u/kjmkjw)\
**Replies:** 1\
**Last updated:** [February 14, 2024, 6:15pm UTC](https://discourse.slicer.org/t/pet-lymph-node-automated-segmentation/34329 "2024-02-14T18:15:18Z")

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Hi, I’m new to 3D Slicer. I am hoping to segment metabolically active lymph nodes using the SUV threshold. If I use Threshold tool on Segment Editor, and set the Threshold range and Apply, it would segment everything …

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## [PET-MRI corregistration](https://discourse.slicer.org/t/pet-mri-corregistration/32346)

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**Author:** [@Gonzalo\_Rojas\_Costa](https://discourse.slicer.org/u/Gonzalo_Rojas_Costa)\
**Replies:** 0\
**Last updated:** [October 20, 2023, 3:03pm UTC](https://discourse.slicer.org/t/pet-mri-corregistration/32346 "2023-10-20T15:03:11Z")

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Hi: I have some whole body PET-CT images, and liver MRI (patients with liver cancer). How can I do a PET-MRI corregistration? Sincerely, Gonzalo Rojas Costa

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## [Info behind Dicom tag - Decay Corrected(0018,9758)](https://discourse.slicer.org/t/info-behind-dicom-tag-decay-corrected-0018-9758/31104)

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**Author:** [@appos](https://discourse.slicer.org/u/appos)\
**Replies:** 0\
**Last updated:** [August 11, 2023, 1:28pm UTC](https://discourse.slicer.org/t/info-behind-dicom-tag-decay-corrected-0018-9758/31104 "2023-08-11T13:28:17Z")

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I seem to have a few doubts so please try to answer these individually. There seems to be a DICOM tag Decay Corrected(0018,9758). The enumerated values are YES and NO. I have a situation in which this values is YES. I…

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## [Total radioactivity within VOI](https://discourse.slicer.org/t/total-radioactivity-within-voi/24953)

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**Author:** [@samcyc](https://discourse.slicer.org/u/samcyc)\
**Replies:** 1\
**Last updated:** [April 20, 2023, 6:25am UTC](https://discourse.slicer.org/t/total-radioactivity-within-voi/24953 "2023-04-20T06:25:46Z")

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Hello all, I come to you for a question which I can’t find the answer on the forum or on internet. I want to know the total radioactivity within a volume of interest. All quantitative tools I found for 3D slicer (PET-I…

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## [Wrong PET SUV with Philips machine](https://discourse.slicer.org/t/wrong-pet-suv-with-philips-machine/23324)

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**Author:** [@tristan421](https://discourse.slicer.org/u/tristan421)\
**Replies:** 10\
**Last updated:** [April 4, 2023, 9:50pm UTC](https://discourse.slicer.org/t/wrong-pet-suv-with-philips-machine/23324 "2023-04-04T21:50:50Z")

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Hello. There seems to be an issus with the way PETDICOM module operate on PET images taken from a a phillips machine. The computed SUV are way too low. By looking into the hood, it seems the right way to compute SUV va…

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## [Hanging protocol for displaying PET/CT images](https://discourse.slicer.org/t/hanging-protocol-for-displaying-pet-ct-images/28598)

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**Author:** [@nick.reynders](https://discourse.slicer.org/u/nick.reynders)\
**Replies:** 1\
**Last updated:** [March 27, 2023, 3:09pm UTC](https://discourse.slicer.org/t/hanging-protocol-for-displaying-pet-ct-images/28598 "2023-03-27T15:09:11Z")

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Is is possible to add on a feature that saves a user’s preferred modality-specific viewing settings. I view PET/CT images regularly and it would be great to be able to have my view settings saved so I’m always viewing P…

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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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## [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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## [PETCTfusion (dealing with PET and CT DICOM images)](https://discourse.slicer.org/t/petctfusion-dealing-with-pet-and-ct-dicom-images/8361)

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**Author:** [@Nora](https://discourse.slicer.org/u/Nora)\
**Replies:** 4\
**Last updated:** [February 18, 2023, 11:37pm UTC](https://discourse.slicer.org/t/petctfusion-dealing-with-pet-and-ct-dicom-images/8361 "2023-02-18T23:37:25Z")

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Hi, I’m trying to put my head around 3D slicer. I’ve downloaded version 4.10.2 and 4.11.0. I’ll be working with PET/CT images. I’m trying to find PETCTfusion module but I couldn’t find it on the list, not even on the …

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## [mask volume problem in PET images](https://discourse.slicer.org/t/mask-volume-problem-in-pet-images/27004)

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**Author:** [@bennur](https://discourse.slicer.org/u/bennur)\
**Replies:** 0\
**Last updated:** [January 1, 2023, 6:05pm UTC](https://discourse.slicer.org/t/mask-volume-problem-in-pet-images/27004 "2023-01-01T18:05:59Z")

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Hi everyone, i am using Slicer 4.11 and ı am trying masking tumor volumes on PET images but masked volume can be empty for some PET images . I dont understand why?

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## [Default pyradiomics settings for PET and CT](https://discourse.slicer.org/t/default-pyradiomics-settings-for-pet-and-ct/25623)

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**Author:** [@mmay](https://discourse.slicer.org/u/mmay)\
**Replies:** 0\
**Last updated:** [October 10, 2022, 5:03am UTC](https://discourse.slicer.org/t/default-pyradiomics-settings-for-pet-and-ct/25623 "2022-10-10T05:03:07Z")

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Can the default pyradiomics settings be used indistinctly for PET, CT and MRI studies, without modifying any parameters? Thank you for your help!

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## [SUV conversion error - Can't find tag 18 1072 - but tag 18 1078 available](https://discourse.slicer.org/t/suv-conversion-error-cant-find-tag-18-1072-but-tag-18-1078-available/24962)

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**Author:** [@samcyc](https://discourse.slicer.org/u/samcyc)\
**Replies:** 1\
**Last updated:** [August 28, 2022, 7:49pm UTC](https://discourse.slicer.org/t/suv-conversion-error-cant-find-tag-18-1072-but-tag-18-1078-available/24962 "2022-08-28T19:49:33Z")

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Hello everybody, I can’t convert my DICOM files in Bq/mL into SUV. I think the problem comes from the metadata of my data which do not contain the tag (0018,1072) RadiopharmaceuticalStartTime, as the error message of t…

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## [How to get the 3D map with PET and MR in Slicer](https://discourse.slicer.org/t/how-to-get-the-3d-map-with-pet-and-mr-in-slicer/24591)

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**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 6\
**Last updated:** [August 3, 2022, 1:39pm UTC](https://discourse.slicer.org/t/how-to-get-the-3d-map-with-pet-and-mr-in-slicer/24591 "2022-08-03T13:39:02Z")

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How to use slicer get the result like the above picture,it used PET-CT.

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## [Fail to export PET dicom files](https://discourse.slicer.org/t/fail-to-export-pet-dicom-files/22410)

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**Author:** [@collamaf](https://discourse.slicer.org/u/collamaf)\
**Replies:** 3\
**Last updated:** [July 25, 2022, 9:22am UTC](https://discourse.slicer.org/t/fail-to-export-pet-dicom-files/22410 "2022-07-25T09:22:30Z")

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Operating system: MacOs 12.2.1 Slicer version: 4.13.0-2021-12-28 Expected behavior: Being able to export a just imported PET Dicom series Actual behavior: “Creating DICOM files from scalar volume failed” Hello everbo…

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## [What is the ideal bin width for PET radiomics?](https://discourse.slicer.org/t/what-is-the-ideal-bin-width-for-pet-radiomics/10558)

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**Author:** [@Nora](https://discourse.slicer.org/u/Nora)\
**Replies:** 4\
**Last updated:** [May 19, 2022, 2:41am UTC](https://discourse.slicer.org/t/what-is-the-ideal-bin-width-for-pet-radiomics/10558 "2022-05-19T02:41:54Z")

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Hi all, I’m trying to extract the radiomic features from PET images using Pyradiomics extension on 3DSlicer. The default settings for the binwidth is 25, however, that’s can’t calculate some features like the GLCMs. …

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## [Align PET and CT images](https://discourse.slicer.org/t/align-pet-and-ct-images/23228)

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**Author:** [@Liu\_Lance](https://discourse.slicer.org/u/Liu_Lance)\
**Replies:** 0\
**Last updated:** [May 2, 2022, 7:26am UTC](https://discourse.slicer.org/t/align-pet-and-ct-images/23228 "2022-05-02T07:26:04Z")

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Hi I feel very curious about how the two images PET (img\_suv) and CT (imgCT) align together in the 3d slicer. they are from the same object. but the nifti affines are different as shown in the following figures. in the …

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## [PET SUV normalization 3Dslicer](https://discourse.slicer.org/t/pet-suv-normalization-3dslicer/22829)

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**Author:** [@Hanne1234](https://discourse.slicer.org/u/Hanne1234)\
**Replies:** 1\
**Last updated:** [April 5, 2022, 12:21pm UTC](https://discourse.slicer.org/t/pet-suv-normalization-3dslicer/22829 "2022-04-05T12:21:10Z")

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I want to normalize my PET images to the SUV using 3Dslicer. I installed the PETDICOM extension and followed the steps of this video: PETDICOM: PET normalization However, when I try to examine my PET data, there is no P…

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## [SUV pet scan dicom](https://discourse.slicer.org/t/suv-pet-scan-dicom/21570)

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**Author:** [@sara\_sharifi](https://discourse.slicer.org/u/sara_sharifi)\
**Replies:** 0\
**Last updated:** [January 22, 2022, 11:35am UTC](https://discourse.slicer.org/t/suv-pet-scan-dicom/21570 "2022-01-22T11:35:33Z")

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Hi I need to use pet suv modules but in output section i can’t choose output lable actually i can’t save my output file to nifti format , just output table works

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## [Anyone know how to calculated the lesion on CT corresponding on SPECT images?](https://discourse.slicer.org/t/anyone-know-how-to-calculated-the-lesion-on-ct-corresponding-on-spect-images/21562)

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**Author:** [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Replies:** 1\
**Last updated:** [January 21, 2022, 5:58pm UTC](https://discourse.slicer.org/t/anyone-know-how-to-calculated-the-lesion-on-ct-corresponding-on-spect-images/21562 "2022-01-21T17:58:54Z")

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Hi All, I have SPECT image with lesion 1 and lesion 2. (as attached picture) I also have CT from the PET machine that also have the same lesion 1 and lesion 2. (as attached picture) My problem is how to calculate the l…

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## [FileFormatError when loading PET CT](https://discourse.slicer.org/t/fileformaterror-when-loading-pet-ct/20579)

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**Author:** [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Replies:** 3\
**Last updated:** [November 11, 2021, 5:46pm UTC](https://discourse.slicer.org/t/fileformaterror-when-loading-pet-ct/20579 "2021-11-11T17:46:23Z")

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Hi, I would like to load PET CT images into Slicer 3.13, DICOM import works, but clicking the axial 512x512 PET image series results in: Could not read scalar volume using GDCM approach. Error is: FileFormatError Loadi…

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## [PET SUV with labels](https://discourse.slicer.org/t/pet-suv-with-labels/18496)

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**Author:** [@Josef\_Yu](https://discourse.slicer.org/u/Josef_Yu)\
**Replies:** 3\
**Last updated:** [July 9, 2021, 11:49am UTC](https://discourse.slicer.org/t/pet-suv-with-labels/18496 "2021-07-09T11:49:37Z")

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Hi people, I was trying to figure out, how the easiest way, I can readout the SUV values (mean, max) of PET images. After segmentation, which are saved in the packaged file .mrb, I tried PET indic, but fail to choose t…

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## [LongitudinalPETCT extension fails to read DICOM files](https://discourse.slicer.org/t/longitudinalpetct-extension-fails-to-read-dicom-files/14902)

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**Author:** [@Mgi](https://discourse.slicer.org/u/Mgi)\
**Replies:** 0\
**Last updated:** [December 3, 2020, 7:05pm UTC](https://discourse.slicer.org/t/longitudinalpetct-extension-fails-to-read-dicom-files/14902 "2020-12-03T19:05:07Z")

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Thank you, this solve my problem. I have another question because now with the version 4.11.2 is not compatible “LongitudinalPETCT” extension, and when I tried to load the dicom with images appear the message: “Coud not …

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## [Fuzzy Locally Adaptive Bayesian in 3D Slicer](https://discourse.slicer.org/t/fuzzy-locally-adaptive-bayesian-in-3d-slicer/14385)

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**Author:** [@Nora](https://discourse.slicer.org/u/Nora)\
**Replies:** 1\
**Last updated:** [November 2, 2020, 4:57pm UTC](https://discourse.slicer.org/t/fuzzy-locally-adaptive-bayesian-in-3d-slicer/14385 "2020-11-02T16:57:09Z")

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Hi all, I’ve been trying to use different segmentation methods to study the reproducibility of Radiomics in PET data. I was able to do the manual and the GrowCut algorithm for segmentation. Yet, I want to try to more m…

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## [Suv calulation not compatible between vendor and 3dslicer software](https://discourse.slicer.org/t/suv-calulation-not-compatible-between-vendor-and-3dslicer-software/12678)

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**Author:** [@Cyril](https://discourse.slicer.org/u/Cyril)\
**Replies:** 2\
**Last updated:** [July 23, 2020, 3:09pm UTC](https://discourse.slicer.org/t/suv-calulation-not-compatible-between-vendor-and-3dslicer-software/12678 "2020-07-23T15:09:14Z")

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HelloSlicer community, i have a problem with suv calculation which seems not wrong between a vendor one and slicer. Operating system:Window Slicer version: 4.10.2 Expected behavior:The suvbw calculation do no corresp…

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