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19 March 2014 Image reconstruction for the new simultaneous whole-body openPET/CT geometry
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A new simultaneous whole-body PET/CT imaging geometry based on the OpenPET imaging structure has been proposed. In this geometry, multiple x-ray sources are adopted to implement the same field of view at the exactly same time for the simultaneous PET and CT imaging process. In this paper, we conducted further quantitative analysis to the new geometry by computer simulation. Then we examined and compared the iterative and analytical algorithms in terms of image quality, regarding the features of the geometry. Results indicated better images were acquired with the iterative algorithms under this geometry for the whole-body range rather than the analytical method. Improved reconstruction images were still expected with generalization of modified algorithm for the proposed geometry. Technical implementation of the geometry in clinical application should also be further considered.
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Yannan Yin, Hideaki Tashima, Takashi Obi, and Taiga Yamaya "Image reconstruction for the new simultaneous whole-body openPET/CT geometry", Proc. SPIE 9033, Medical Imaging 2014: Physics of Medical Imaging, 90334M (19 March 2014);

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