# Possible issue with PSMA PET/CT DICOM loading and SUVbw recognition

**URL:** <https://discourse.slicer.org/t/possible-issue-with-psma-pet-ct-dicom-loading-and-suvbw-recognition/47020>\
**Category:** Support\
**Tags:** petct\
**Created:** [May 14, 2026, 6:25am UTC](https://discourse.slicer.org/t/possible-issue-with-psma-pet-ct-dicom-loading-and-suvbw-recognition/47020 "2026-05-14T06:25:56Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ranahashemi](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ranahashemi/32/82211_2.png) [@ranahashemi](https://discourse.slicer.org/u/ranahashemi)\
**Post date:** [May 14, 2026, 6:25am UTC](https://discourse.slicer.org/t/possible-issue-with-psma-pet-ct-dicom-loading-and-suvbw-recognition/47020/1 "2026-05-14T06:25:56Z")

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Hello everyone,

I encountered a possible issue when loading PSMA PET/CT DICOM files in 3D Slicer.

When I select and load all DICOM files from DICOM database for one patient together, 3D Slicer does not seem to recognize the PET images as SUV. The PET volume is loaded/reported in **Bq/mL** instead.

However, when I first load the **PET DICOM series from the DICOM database** , and then load the **CT series separately** , the PET volume appears with **(SUVbw)** in the name.

So, it seems that the way the PET/CT DICOM files are selected or loaded may affect whether Slicer recognizes the PET data as SUVbw.

Could this be a bug, or is there a recommended way to load PSMA PET/CT DICOM files so that SUVbw is correctly recognized?

Thank you very much for your help.

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**Author:** ![ThomasVanParys](https://avatars.discourse-cdn.com/v4/letter/t/7ea924/32.png) [@ThomasVanParys](https://discourse.slicer.org/u/ThomasVanParys)\
**Post date:** [May 14, 2026, 8:02am UTC](https://discourse.slicer.org/t/possible-issue-with-psma-pet-ct-dicom-loading-and-suvbw-recognition/47020/2 "2026-05-14T08:02:33Z")

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Have you tried Slicer’s PET DICOM Extension? This plugin should use specific metadata tags (e.g., Total Dose, Patient Weight, Half-life) and create a new volume with the suffix `(SUVbw)`.

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**Author:** ![ranahashemi](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ranahashemi/32/82211_2.png) [@ranahashemi](https://discourse.slicer.org/u/ranahashemi)\
**Post date:** [May 15, 2026, 12:24am UTC](https://discourse.slicer.org/t/possible-issue-with-psma-pet-ct-dicom-loading-and-suvbw-recognition/47020/3 "2026-05-15T00:24:51Z")

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Yeah By using that extension, it still like the way I mentioned above