A New Weighting Scheme for Fan-beam and Circle Cone-beam CT Reconstructions

Wei Wang; Xiang-Gen Xia; Chuanjiang He; Zemin Ren; Jian Lu; Tianfu Wang; Baiying Lei

A New Weighting Scheme for Fan-beam and Circle Cone-beam CT Reconstructions

Image and Video Processing 2021-01-07 v1 Computer Vision and Pattern Recognition

Authors: Wei Wang , Xiang-Gen Xia , Chuanjiang He , Zemin Ren , Jian Lu , Tianfu Wang , Baiying Lei

Abstract

In this paper, we first present an arc based algorithm for fan-beam computed tomography (CT) reconstruction via applying Katsevich's helical CT formula to 2D fan-beam CT reconstruction. Then, we propose a new weighting function to deal with the redundant projection data. By extending the weighted arc based fan-beam algorithm to circle cone-beam geometry, we also obtain a new FDK-similar algorithm for circle cone-beam CT reconstruction. Experiments show that our methods can obtain higher PSNR and SSIM compared to the Parker-weighted conventional fan-beam algorithm and the FDK algorithm for super-short-scan trajectories.

Keywords

fan-beam ct cone-beam ct image reconstruction weighting function katsevich formula fdk algorithm

Cite

@article{arxiv.2101.01886,
  title  = {A New Weighting Scheme for Fan-beam and Circle Cone-beam CT Reconstructions},
  author = {Wei Wang and Xiang-Gen Xia and Chuanjiang He and Zemin Ren and Jian Lu and Tianfu Wang and Baiying Lei},
  journal= {arXiv preprint arXiv:2101.01886},
  year   = {2021}
}

A New Weighting Scheme for Fan-beam and Circle Cone-beam CT Reconstructions

Abstract

Keywords

Cite

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