# RTslicer isodose lines

**URL:** https://discourse.slicer.org/t/rtslicer-isodose-lines/26546
**Category:** Support
**Created:** [December 2, 2022, 4:11am UTC](https://discourse.slicer.org/t/rtslicer-isodose-lines/26546 "2022-12-02T04:11:46Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Ywatana29](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ywatana29/32/9178_2.png) [@Ywatana29](https://discourse.slicer.org/u/Ywatana29)
#### Post date: [December 2, 2022, 4:11am UTC](https://discourse.slicer.org/t/rtslicer-isodose-lines/26546/1 "2022-12-02T04:11:46Z")

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With older versions, I could overlay isodose lines of two RTDOSE files using the isodose tool. But, with the latest version 5.3.0-2022-11-26, I cannot do it anymore. It replaces the isodose line plot when I generate isodose lines after changing the RTDOSE file.

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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: [December 7, 2022, 10:28am UTC](https://discourse.slicer.org/t/rtslicer-isodose-lines/26546/2 "2022-12-07T10:28:51Z")

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Yes you are right, this is a regression. Can you please add an issue to [Issues · SlicerRt/SlicerRT · GitHub](https://github.com/SlicerRt/SlicerRT/issues) about this? I will try to fix it soon, when I get to work on this module. Thank you for your report!

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### Author: ![Mik](https://avatars.discourse-cdn.com/v4/letter/m/958977/32.png) [@Mik](https://discourse.slicer.org/u/Mik)
#### Post date: [January 4, 2023, 5:32am UTC](https://discourse.slicer.org/t/rtslicer-isodose-lines/26546/3 "2023-01-04T05:32:52Z")

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PR to fix this issue is ready. [https://github.com/SlicerRt/SlicerRT/pull/225](https://github.com/SlicerRt/SlicerRT/pull/225)