Investigation on PI-line selecting method base on GPU accelerated back-projection filtered VOI reconstruction

Han Zheng; Yanyan Yu; Yan Kang; Jiren Liu

doi:10.1117/12.839831

22 March 2010 Investigation on PI-line selecting method base on GPU accelerated back-projection filtered VOI reconstruction

Han Zheng, Yanyan Yu, Yan Kang, Jiren Liu

Author Affiliations +

Proceedings Volume 7622, Medical Imaging 2010: Physics of Medical Imaging; 76222G (2010) https://doi.org/10.1117/12.839831
Event: SPIE Medical Imaging, 2010, San Diego, California, United States

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.

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Han Zheng, Yanyan Yu, Yan Kang, and Jiren Liu "Investigation on PI-line selecting method base on GPU accelerated back-projection filtered VOI reconstruction", Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76222G (22 March 2010); https://doi.org/10.1117/12.839831

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KEYWORDS

Image segmentation

Reconstruction algorithms

Visualization

Computed tomography

Sensors

Data processing

Algorithm development

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