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Proceedings Paper

Investigation on PI-line selecting method base on GPU accelerated back-projection filtered VOI reconstruction
Author(s): Han Zheng; Yanyan Yu; Yan Kang; Jiren Liu
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Paper Abstract

Reconstruction algorithms based on PI-line or Chord are active subject in CBCT. Among them back-projection filtered (BPF) reconstruction algorithm has obvious influence for its exact reconstruction results and less computations especially in selected volume of interesting (VOI) regions. However, the selecting and sampling method of PI-line segment can directly affect the quality of reconstructed images. In this paper, we proposed a general PI-line selecting scheme to reconstruct VOI regions by using BPF algorithm, which mainly based on the relationship between reconstructed coordinate and PI-line coordinate. The proposed scheme is applicable for GPU accelerated back-projection filtered reconstruction.

Paper Details

Date Published: 22 March 2010
PDF: 12 pages
Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76222G (22 March 2010); doi: 10.1117/12.839831
Show Author Affiliations
Han Zheng, Northeastern Univ. (China)
Yanyan Yu, Northeastern Univ. (China)
Yan Kang, Northeastern Univ. (China)
Jiren Liu, Northeastern Univ. (China)

Published in SPIE Proceedings Vol. 7622:
Medical Imaging 2010: Physics of Medical Imaging
Ehsan Samei; Norbert J. Pelc, Editor(s)

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