# CPR transformation for CT/CTA data in Slicer
**URL:** https://discourse.slicer.org/t/cpr-transformation-for-ct-cta-data-in-slicer/31338
**Category:** Support
**Created:** [August 24, 2023, 3:18pm UTC](https://discourse.slicer.org/t/cpr-transformation-for-ct-cta-data-in-slicer/31338 "2023-08-24T15:18:36Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@mikbuch](https://discourse.slicer.org/u/mikbuch)
#### Post date: [August 24, 2023, 3:18pm UTC](https://discourse.slicer.org/t/cpr-transformation-for-ct-cta-data-in-slicer/31338/1 "2023-08-24T15:18:36Z")
Hi, does anyone know whether the Slicer, or any of its modules, has a curved planar reformation (CPR) algorithm implemented, so that it can be used for transformations along centerlines?
Ref.
> **[Fractional Flow Reserve Estimated at Coronary CT Angiography in
Intermediate...](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5896162/)**
>
> To compare the diagnostic accuracy of different computed tomographic (CT)
> fractional flow reserve (FFR) algorithms for vessels with intermediate
> stenosis.This cross-sectional HIPAA-compliant and human research committee–approved
> study applied ...
[https://www.researchgate.net/publication/258349199\_Fully\_automatic\_model-based\_calcium\_segmentation\_and\_scoring\_in\_coronary\_CT\_angiography](https://www.researchgate.net/publication/258349199_Fully_automatic_model-based_calcium_segmentation_and_scoring_in_coronary_CT_angiography)
> **[Automated Curved and Multiplanar Reformation for Screening of the Proximal...](https://www.mdpi.com/2313-433X/4/11/124)**
>
> Congenital anomalies of the coronary ostia can lead to sudden death. A screening solution would be useful to prevent adverse outcomes for the affected individuals. To be considered for integration into clinical routine, such a procedure must meet...
[ ](https://www.youtube.com/watch?v=xe7nNswnWrA&t=144)
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### Author:  [@chir.set](https://discourse.slicer.org/u/chir.set)
#### Post date: [August 24, 2023, 4:57pm UTC](https://discourse.slicer.org/t/cpr-transformation-for-ct-cta-data-in-slicer/31338/2 "2023-08-24T16:57:16Z")
> [@mikbuch](#):
>
> a curved planar reformation
You are probably looking for the ‘[Curved planar reformat](https://github.com/lassoan/SlicerSandbox/)’ module; it is in the ‘Slicer Sandbox’ extension, that you can install using the extensions manager.
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### Author:  [@mikbuch](https://discourse.slicer.org/u/mikbuch)
#### Post date: [August 25, 2023, 7:57am UTC](https://discourse.slicer.org/t/cpr-transformation-for-ct-cta-data-in-slicer/31338/3 "2023-08-25T07:57:01Z")
> [@chir.set](#):
>
> Curved planar reformat
Thank you, I will give it a try.