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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 X-rays, and by 1900, X-ray was widely...

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Updated: Jul 2, 2026

Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography

Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography

Published on: February 21, 2017

动态X射线成像使用屏幕打印矿CMOS阵列阵列.

Yanliang Liu¹, Chaosong Gao², Dong Li¹

¹Materials Interfaces Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China.

Nature communications

|February 21, 2024

概括

此摘要是机器生成的。

这项研究引入了一种新的矿CMOSX射线探测器,用于先进的生物医学成像. 它在低辐射剂量下实现了高分辨率和速度,使动态成像和CT扫描成为可能.

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科学领域:

材料科学材料科学材料科学
医疗成像医学成像
半导体物理半导体物理

背景情况:

高性能X射线探测器对于生物医学成像是必不可少的,需要超高的空间和时间分辨率.
目前的探测器在分辨率,速度和辐射剂量效率方面面临限制.

研究的目的:

开发和描述一个动态直接转换的CMOSX射线探测器,使用屏幕打印化 (CsPbBr3) 的化.
评估其用于高分辨率,大面积,低剂量动态生物医学X射线和CT成像的性能.

主要方法:

一个直接转换的CMOSX射线探测器的制造,用幕打印的CsPbBr3.
检测器性能的表征,包括可移动寿命产品,X射线灵敏度,空间分辨率和率.
大型样本的成像和3D断层图像的重建.

主要成果:

该CsPbBr3探测器实现了5.2×10^-4cm^2V^-1的移动寿命乘积,X射线灵敏度为1.6×10^4μCGyair^-1cm^-2.
样品的快速成像>5厘米×10厘米,每秒300.
在低辐射剂量 (260 nGy) 和成功的3DCT重建下,证明了高空间分辨率 (5.0 lp mm^-1).

结论:

与传统的间接转换探测器相比,矿CMOS探测器提供了更高的性能.
它显示了动态生物医学X射线和CT成像,非破坏性测试和安全扫描的巨大潜力.
这项技术推动了下一代X射线成像系统的发展.