# About reconstructing images of double flat panel detectors

**URL:** <https://castor-project.discourse.group/t/about-reconstructing-images-of-double-flat-panel-detectors/484>\
**Category:** General Discussions\
**Created:** [March 20, 2023, 9:58am UTC](https://castor-project.discourse.group/t/about-reconstructing-images-of-double-flat-panel-detectors/484 "2023-03-20T09:58:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![yuanhang](https://avatars.discourse-cdn.com/v4/letter/y/ec9cab/32.png) [@yuanhang](https://castor-project.discourse.group/u/yuanhang)\
**Post date:** [March 20, 2023, 9:58am UTC](https://castor-project.discourse.group/t/about-reconstructing-images-of-double-flat-panel-detectors/484/1 "2023-03-20T09:58:03Z")

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Dear castor users,  
I see in the castor’s documentation that castor can only reconstruct cylindrical PET images at present, I have a double-plate PET system that I want to rebuild, I want to try it as a transformation of cylindrical PET, such as setting the number of rsector to 2, is this feasible? And I rotated the experimental object during the experiment, how can I reconstruct the image of this data? I would be grateful if anyone gave me suggestions.

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**Author:** ![Maxime\_Toussaint](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Maxime\_Toussaint](https://castor-project.discourse.group/u/Maxime_Toussaint)\
**Post date:** [March 23, 2023, 9:37pm UTC](https://castor-project.discourse.group/t/about-reconstructing-images-of-double-flat-panel-detectors/484/2 "2023-03-23T21:37:47Z")

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Greetings,

For the first question, I believe that you can define a double-plate PET system with the cylindrical structure. Using two rsector should be the correct aproaches.

For the second question, there are options in castor-recon for motion (e.g. 7.2.2 Time-based motion correction).

Bests,  
Maxime Toussaint