Achromatic approach to phase-based multi-modal imaging with conventional X-ray sources
Achromatic approach to phase-based multi-modal imaging with conventional X-ray sources
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DOI：
10.1364/oe.23.016473
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发表时间：
2015-06-15
期刊：
影响因子：
3.8
通讯作者：
Olivo, Alessandro
中科院分区：
文献类型：
--
作者：
Endrizzi, Marco;Vittoria, Fabio A.;Olivo, Alessandro
与多色辐射的兼容性是使用传统旋转阳极 X 射线源的成像系统的重要要求。利用市售的能量分辨单光子计数探测器，我们研究了宽带辐射如何影响多模态边缘照明相衬成像系统的性能。介绍了 X 射线能量对相位恢复的影响，并通过实验证明了该方法的消色差。与在能谱上积分的模拟测量结果进行比较表明，由于使用多色辐射，图像质量没有显着损失。这意味着，在很大程度上，成像系统在硬 X 射线成像中通常使用的所有能量上都以相同的方式利用辐射。 (C) 2015年美国光学学会
Compatibility with polychromatic radiation is an important requirement for an imaging system using conventional rotating anode X-ray sources. With a commercially available energy-resolving single-photoncounting detector we investigated how broadband radiation affects the performance of a multi-modal edge-illumination phase-contrast imaging system. The effect of X-ray energy on phase retrieval is presented, and the achromaticity of the method is experimentally demonstrated. Comparison with simulated measurements integrating over the energy spectrum shows that there is no significant loss of image quality due to the use of polychromatic radiation. This means that, to a good approximation, the imaging system exploits radiation in the same way at all energies typically used in hard-X-ray imaging. (C) 2015 Optical Society of America