# Truncation artifact recovery

**URL:** <https://discourse.itk.org/t/truncation-artifact-recovery/7435>\
**Category:** Algorithms\
**Created:** [February 17, 2025, 8:14am UTC](https://discourse.itk.org/t/truncation-artifact-recovery/7435 "2025-02-17T08:14:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![langzhizhen](https://discourse.itk.org/user_avatar/discourse.itk.org/langzhizhen/32/4468_2.png) [@langzhizhen](https://discourse.itk.org/u/langzhizhen)\
**Post date:** [February 17, 2025, 8:14am UTC](https://discourse.itk.org/t/truncation-artifact-recovery/7435/1 "2025-02-17T08:14:59Z")

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Recently, I was using FDK algorithm for CBCT, but when I used FOV, there were some truncation artifacts at the beginning and end of reconstruction results, which may be caused by insufficient data collection. Then, is there any algorithm in ITK and RTK that can eliminate truncation artifacts and restore the original field of view with some methods?

 ![1](https://discourse.itk.org/uploads/default/original/2X/5/57387c5f6be62f5ec44d3dcbef9e6913426d20c0.jpeg)  
 ![2](https://discourse.itk.org/uploads/default/original/2X/0/05dd58f73ddb231002d3a5f577193ebc3c9bb21f.jpeg)  
The small field of view is the truncation artifact, and the large field of view is the original field of view.

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**Author:** ![simon.rit](https://discourse.itk.org/letter_avatar_proxy/v4/letter/s/f08c70/32.png) [@simon.rit](https://discourse.itk.org/u/simon.rit)\
**Post date:** [February 22, 2025, 8:33am UTC](https://discourse.itk.org/t/truncation-artifact-recovery/7435/2 "2025-02-22T08:33:38Z")

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For the record, this question has been posted to RTK’s mailing list to, [here](https://www.creatis.insa-lyon.fr/pipermail/rtk-users/2025-February/002175.html) is the answer.