An Improved Phase Retrieval Algorithm for X-ray In-line Phase-Contrast Imaging
GUO Yun-feng
ZHUANG Tian-ge
SUN Jian-qi
摘要：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.
机标关键词：improved algorithmtransfer functionsimulated imageslinear algorithmphase retrievaltype of
分类号：TL82(粒子探测技术、辐射探测技术与核仪器仪表)
论文发表日期：2016-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：7( 69-75 )
英文信息