In this paper, an improved scatter correction with moving beam stop array (BSA) for x-ray cone beam (CB) CT is proposed. Firstly, correlation between neighboring CB views is deduced based on John's Equation. Then, correlation-based algorithm is presented to complement the incomplete views by using the redundancy (over-determined information) in CB projections. Finally, combining the algorithm with scatter correction method using moving BSA, where part of primary radiation is blocked and incomplete projections are acquired, an improved correction method is proposed. Effectiveness and robustness is validated by Monte Carlo (MC) simulation with EGSnrc on humanoid phantom.
Cite
@article{arxiv.1410.8411,
title = {Improved Scatter Correction in X-Ray Cone Beam CT with Moving Beam Stop Array Using Johns' Equation},
author = {Hao Yan and Xuanqin Mou and Shaojie Tang and Qiong Xu},
journal= {arXiv preprint arXiv:1410.8411},
year = {2014}
}
Comments
4 pages, pp98-101, Proceedings of the 10th International Meeting on Fully Three-dimensional Image Reconstruction in Radiology and Nuclear Medicine, Beijing, China, 2009