An Improved Phase Retrieval Algorithm for X-ray In-line Phase-Contrast Imaging

An Improved Phase Retrieval Algorithm for X-ray In-line Phase-Contrast Imaging

Phase contrast imaging technique has been improved promptly in recent years. Among these techniques in-line phase-contrast imaging is widely used. Various algorithms for in-line phase retrieval have been proposed so far such as TIE (transport of intensity equation), CTF (contrast transfer function),...

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Veröffentlicht in:中国生物医学工程学报（英文版） 2016, Vol.25 (2), p.69-75
1. Verfasser: GUO Yun-feng ZHUANG Tian-ge SUN Jian-qi
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description Phase contrast imaging technique has been improved promptly in recent years. Among these techniques in-line phase-contrast imaging is widely used. Various algorithms for in-line phase retrieval have been proposed so far such as TIE (transport of intensity equation), CTF (contrast transfer function), first born-approximations, GSF (Gerchberg-Saxton-Fienup), etc. Bronnikov's algorithm(BA) is a type of linear algorithm that is simple and efficient. But it can only be used without absorption situations. In this paper, an improved algorithm based on BA was presented. The approach adds Δφ(x,y) to the phase mapφb (x,y) retrieved by BA to make the reconstructed phase map more precise. Further, the approach was evaluated on simulated images and confirmed to be accurate at higher absorption rates.
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title An Improved Phase Retrieval Algorithm for X-ray In-line Phase-Contrast Imaging
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