An experimental method of determining relative phase-contrast factor for x-ray imaging systems.
An experimental method of determining relative phase-contrast factor for x-ray imaging systems.
复制标题
确定 X 射线成像系统相对相位对比因子的实验方法。
DOI：
10.1118/1.1688213
复制
发表时间：
2004
期刊：
影响因子：
3.8
通讯作者：
Liu,Hong
中科院分区：
文献类型：
--
作者：
Wua,Xizeng;Liu,Hong
The relative phase‐contrast factor (RPF) represents a quantitative measure of the phase‐contrast transfer in x‐ray in‐line phase‐contrast imaging. The larger the modulus of is, the more the phase‐contrast manifests. In this work we show how the RPF can be determined by measurements of the focal spot size and x‐ray spectra for a x‐ray imaging system with a micro‐focus x‐ray tube. The results show the significant effects of x‐ray beam hardening on the visibility of phase‐contrast, and reveal a new dimension in seeking optimal techniques for x‐ray phase‐contrast imaging.
