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Medicine material science and security: the versatility of the coded-aperture approach

机译:医学材料科学与安全:编码孔径方法的多功能性

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摘要

The principal limitation to the widespread deployment of X-ray phase imaging in a variety of applications is probably versatility. A versatile X-ray phase imaging system must be able to work with polychromatic and non-microfocus sources (for example, those currently used in medical and industrial applications), have physical dimensions sufficiently large to accommodate samples of interest, be insensitive to environmental disturbances (such as vibrations and temperature variations), require only simple system set-up and maintenance, and be able to perform quantitative imaging. The coded-aperture technique, based upon the edge illumination principle, satisfies each of these criteria. To date, we have applied the technique to mammography, materials science, small-animal imaging, non-destructive testing and security. In this paper, we outline the theory of coded-aperture phase imaging and show an example of how the technique may be applied to imaging samples with a practically important scale.
机译:X射线相位成像在各种应用中的广泛部署的主要限制可能是多功能性。通用的X射线相位成像系统必须能够与多色和非微焦点源(例如,当前在医疗和工业应用中使用的源)一起使用,其物理尺寸必须足够大以容纳感兴趣的样品,并且对环境干扰不敏感(例如振动和温度变化),只需要简单的系统设置和维护,就能执行定量成像。基于边缘照明原理的编码孔径技术可以满足上述每个标准。迄今为止,我们已将该技术应用于乳房X线照相术,材料科学,小动物成像,无损检测和安全性。在本文中,我们概述了编码孔径相位成像的理论,并显示了如何将该技术应用于具有实际重要规模的成像样本的示例。

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