%0 Journal Article
%T Quantitative Evaluation Methods of In-Line X-Ray Phase Contrast Techniques
%A LI Chen
%A LI Zheng
%A LI Cheng-Quan
%A YU Ai-Min
%A <br>李晨
%A 李政
%A 黎成权
%A 禹爱民
%J 中国物理快报
%D 2007
%I 
%X By revealing the relationship between edge visibility and imaging parameters in in-line phase contrast imaging (PCI), we propose a method to quantitatively measure the contribution of absorption and phase shift from acquired images. We also prove that edge visibility will grow with the increasing source-object distance and object-detector distance. The result is validated by relative phase factor and by experiments conducted on a microfocus x-ray source. This method provides a new approach to evaluate in-line PCI images and is helpful for deciding imaging parameters.
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%K Va<br>数量评估
%K X射线
%K 线性结构
%K 原子核
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=03664AC44D4808187E413FB4E99420DB&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=F3090AE9B60B7ED1&sid=80EC716EA01F99A6&eid=F9510B5449D4E7A0&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0