# \#tre

**URL:** https://discourse.itk.org/tag/tre/225.md

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## [Plot TRE per iteration for 2D registration](https://discourse.itk.org/t/plot-tre-per-iteration-for-2d-registration/6505)

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**Author:** [@Vojtech\_Benda](https://discourse.itk.org/u/Vojtech_Benda)\
**Replies:** 4\
**Last updated:** [March 15, 2024, 12:14pm UTC](https://discourse.itk.org/t/plot-tre-per-iteration-for-2d-registration/6505 "2024-03-15T12:14:35Z")

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Hello, I’m trying to plot target registration error (TRE) values at each iteration as shown in this notebook in the Registration cell. The input images are 3D and 2D, where the 3D image is sliced into 2D. They are transf…

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## [Compute TRE after image registration for 4DCT lung images](https://discourse.itk.org/t/compute-tre-after-image-registration-for-4dct-lung-images/5558)

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**Author:** [@VHK](https://discourse.itk.org/u/VHK)\
**Replies:** 3\
**Last updated:** [January 17, 2023, 2:26pm UTC](https://discourse.itk.org/t/compute-tre-after-image-registration-for-4dct-lung-images/5558 "2023-01-17T14:26:46Z")

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Hello, I am doing a deformable image registration for 4DCT lung images. I want to evaluate the registration accuracy by calculating the TRE in SITK. I did Elastix registration in 3D-Slicer and got the transformation as …