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边缘照明X射线多对比成像系统的扫描操作,使用具有不均吸收结构的低成本面具

Zhang Guangya, Deng Kai, Yang Yu

|November 11, 2025

概括

这项研究引入了一种新的边缘照明 (EI) X射线成像技术,使用样本扫描模式. 这种方法提高了视野和效率,克服了当前EI系统的局限性,用于更广泛的应用.

科学领域:

医疗成像医学成像
非破坏性测试不破坏性测试
射线成像X射线成像X射线成像

背景情况:

边缘照明 (EI) X射线多对比成像检索吸收,相位和散射图像.
当前的EI系统面临着挑战:高的掩护成本,有限的视野 (FOV) 和低成像效率由于掩护步进.

研究的目的:

开发一种改进的EI成像方法,解决成本,FOV和效率的限制.
为了使EI X射线多对比成像的商业应用.

主要方法:

使用样本扫描模式来提高FOV和成像效率.
低成本的金属粉面膜被利用,尽管它们的吸收不均.
实现了检测器面罩 (M2) 轴向转换和多个照明曲线的检索算法.

主要成果:

成功获得了一只脚和电路板的多对比图像.
图像实现了250mm的FOV (垂直于扫描).
该方法与标准的X射线管设置 (70kV/400μA) 兼容.

结论:

拟议的扫描EI方法提高了FOV和效率,同时使用了低成本的口罩.
这种技术为克服EI系统的局限性提供了可行的解决方案.
进一步开发可能会导致安全扫描和输送带系统的广泛使用.

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相关概念视频

X-ray Imaging

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...