# \#drr

**URL:** https://discourse.itk.org/tag/drr/223.md

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## [Can't get right DRR](https://discourse.itk.org/t/cant-get-right-drr/6007)

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**Author:** [@suzume](https://discourse.itk.org/u/suzume)\
**Replies:** 4\
**Last updated:** [June 22, 2023, 3:38pm UTC](https://discourse.itk.org/t/cant-get-right-drr/6007 "2023-06-22T15:38:15Z")

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Hi, I was using GetDRRSiddonJacobsRayTracing.cxx to generate DRR images. However I can’t generate the right DRR images as the images generated by the author. The parameters are set as the author proposed, which are -rp …

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## [Threshold of itk::RescaleIntensityImageFilter](https://discourse.itk.org/t/threshold-of-itk-rescaleintensityimagefilter/5608)

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**Author:** [@suzume](https://discourse.itk.org/u/suzume)\
**Replies:** 5\
**Last updated:** [January 6, 2023, 12:59am UTC](https://discourse.itk.org/t/threshold-of-itk-rescaleintensityimagefilter/5608 "2023-01-06T00:59:01Z")

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I’m generating a DRR image using DigitallyReconstructedRadiograph1.cxx. I need to generate two kinds of DRR images, one only has the soft tissues and the other one only has the bone structures. I have tried to change th…

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## [There are deviations between generated DRR image and corresponding EPID image](https://discourse.itk.org/t/there-are-deviations-between-generated-drr-image-and-corresponding-epid-image/5522)

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**Author:** [@suzume](https://discourse.itk.org/u/suzume)\
**Replies:** 5\
**Last updated:** [November 25, 2022, 2:42pm UTC](https://discourse.itk.org/t/there-are-deviations-between-generated-drr-image-and-corresponding-epid-image/5522 "2022-11-25T14:42:02Z")

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I want to generate the DRR image from the CT and register it with the corresponding EPID image. However, there are always deviations between the generated DRR image and its corresponding EPID image. The EPID is obtained …

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## [Gantry rotation when generate DRR](https://discourse.itk.org/t/gantry-rotation-when-generate-drr/5500)

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**Author:** [@suzume](https://discourse.itk.org/u/suzume)\
**Replies:** 4\
**Last updated:** [November 21, 2022, 6:12pm UTC](https://discourse.itk.org/t/gantry-rotation-when-generate-drr/5500 "2022-11-21T18:12:34Z")

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I want to rotate the gantry and couch when generating the DRR image. An Euler transformation is used to rotate the input volume to simulate the couch rotation. What else can I use to rotate the gantry? Can I use Euler tr…