A backprojection filtered image reconstruction algorithm for circular cone-beam CT

Liang Li; Zhiqiang Chen; Li Zhang; Yuxiang Xing; Kejun Kang

doi:10.1117/12.652520

2 March 2006 A backprojection filtered image reconstruction algorithm for circular cone-beam CT

Liang Li, Zhiqiang Chen, Li Zhang, Yuxiang Xing, Kejun Kang

Proceedings Volume 6142, Medical Imaging 2006: Physics of Medical Imaging; 61424N (2006) https://doi.org/10.1117/12.652520
Event: Medical Imaging, 2006, San Diego, California, United States

Abstract

In this paper we present a backprojection filtered type (BPF-type) reconstruction algorithm for cone-beam circular scans based on Zou and Pan's work. The algorithm could use all the projection data passing through the PI-line segments in 2π scanning range. Because all the projection data in 2π is used, the algorithm has a good quality for practical noisy projection data. The algorithm is implemented using numerical and practical experiments. The practical experiments were done on our X-ray CT system with a flat-panel detector. We also compare the results with FDK reconstructions. From the experimental results, we deem that the BPF algorithm could satisfy the requirement of the X-ray CT inspection.

Citation Download Citation

Liang Li, Zhiqiang Chen, Li Zhang, Yuxiang Xing, and Kejun Kang "A backprojection filtered image reconstruction algorithm for circular cone-beam CT", Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61424N (2 March 2006); https://doi.org/10.1117/12.652520

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