# ROI selection for film dosimetry

**URL:** <https://discourse.slicer.org/t/roi-selection-for-film-dosimetry/32172>\
**Category:** Support\
**Tags:** slicerrt\
**Created:** [October 12, 2023, 3:00am UTC](https://discourse.slicer.org/t/roi-selection-for-film-dosimetry/32172 "2023-10-12T03:00:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jmw972](https://avatars.discourse-cdn.com/v4/letter/j/e8c25b/32.png) [@jmw972](https://discourse.slicer.org/u/jmw972)\
**Post date:** [October 12, 2023, 3:00am UTC](https://discourse.slicer.org/t/roi-selection-for-film-dosimetry/32172/1 "2023-10-12T03:00:55Z")

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Hello, I am new to the Slicer Film Dosimetry module. I am running through the steps and using the example data provided. However, I am stuck at the region selection stage for calibration. I could not add ROI after clicking on the _Add Region_. Attached is the image of the calibration window. Any help would be great, thank you.

 ![Screenshot (104)](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/3/f3513f79cfd12207e76a661cf00821c422387f6b.png)

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [October 13, 2023, 12:23pm UTC](https://discourse.slicer.org/t/roi-selection-for-film-dosimetry/32172/2 "2023-10-13T12:23:06Z")

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This extension is not maintained anymore, so it is probable that your issue is due to the API changes since then, see

> <https://github.com/SlicerRt/FilmDosimetryAnalysis/issues/2>
>
> Annotations module, which provides \`vtkMRMLAnnotationROI\` and \`vtkMRMLAnnotation…Ruler\` nodes have been deprecated since April 2021 and will be removed in Slicer-5.4 stable version early next year.
> Since some modules in this extension use annotation nodes, these modules need to be updated to use markups nodes before the end of this year.
> 
> \[This section\](https://www.slicer.org/wiki/Documentation/Nightly/Developers/Tutorials/MigrationGuide/Slicer#Slicer\_5.3%3A\_Removed\_Annotation\_module) of the migration guide should help with implementing the changes and any questions can be asked at the \[Remove Annotations module topic in the Slicer forum\](https://discourse.slicer.org/t/remove-annotations-module/25271).
> 
> Impacted modules:
> \- FilmDosimetryAnalysis\\FilmDosimetryAnalysisLogic\\FilmDosimetryAnalysisLogic.py 
> \- FilmDosimetryAnalysis\\FilmDosimetryAnalysis.py

Maybe you can try the film dosimetry extension with an older version of Slicer, such as 4.10.

Or you can try to fix the extension for the latest version if you feel motivated. I can give pointers if you decide to go for it.