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

arXiv: https://arxiv.org/abs/2101.01886 · HTML: https://mlsanity.com/paper/2101.01886/

## Key facts

- No citing papers in the map yet (data through 14 Oct 2026).
- Builds on 0 of its 31 references that are in the map.
- First posted on arXiv 6 Jan 2021.

## Abstract (arXiv)

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.