Datta Amlan, Fiala John, Motakef Shariar
CapeSym, Inc., 6 Huron Drive, Natick, MA, 01760, USA.
Sci Rep. 2021 Nov 24;11(1):22897. doi: 10.1038/s41598-021-02378-w.
X-ray radiography is the most widely used imaging technique with applications encompassing medical and industrial imaging, homeland security, and materials research. Although a significant amount of research and development has gone into improving the spatial resolution of the current state-of-the-art indirect X-ray detectors, it is still limited by the detector thickness and microcolumnar structure quality. This paper demonstrates high spatial resolution X-ray imaging with solution-processable two-dimensional hybrid perovskite single-crystal scintillators grown inside microcapillary channels as small as 20 µm. These highly scalable non-hygroscopic detectors demonstrate excellent spatial resolution similar to the direct X-ray detectors. X-ray imaging results of a camera constructed using this scintillator show Modulation Transfer Function values significantly better than the current state-of-the-art X-ray detectors. These structured detectors open up a new era of low-cost large-area ultrahigh spatial resolution high frame rate X-ray imaging with numerous applications.
X射线放射成像术是应用最为广泛的成像技术，其应用涵盖医学和工业成像、国土安全以及材料研究等领域。尽管在提高当前最先进的间接X射线探测器的空间分辨率方面已经进行了大量的研发工作，但它仍然受到探测器厚度和微柱状结构质量的限制。本文展示了利用在小至20微米的微毛细管通道内生长的可溶液处理的二维混合钙钛矿单晶闪烁体实现的高空间分辨率X射线成像。这些具有高度可扩展性且不吸湿的探测器展现出与直接X射线探测器相似的出色空间分辨率。使用这种闪烁体制成的相机的X射线成像结果显示，其调制传递函数值明显优于当前最先进的X射线探测器。这些结构化探测器开启了一个低成本、大面积、超高空间分辨率、高帧率X射线成像的新时代，具有众多应用。
