Perovskite 计算机断层扫描成像仪和三维重建

IF 32.3 1区物理与天体物理 Q1 OPTICS

Nature Photonics Pub Date : 2024-08-16 DOI:10.1038/s41566-024-01506-y

Yuhong He, Jinmei Song, Mingbian Li, Kostiantyn Sakhatskyi, Weijun Li, Xiaopeng Feng, Bai Yang, Maksym Kovalenko, Haotong Wei

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引用次数: 0

摘要

由于不可避免的光损失和多个能量转换步骤，间接闪烁体计算机断层扫描（CT）成像存在图像对比度降低和高剂量 X 射线照射的问题。在此，我们报告了一种通过低成本喷涂工艺实现的直接铅卤化物包晶 CT 成像仪。吸收体厚度为 980 μm、表面粗糙度为 10 nm 的探测器阵列可产生均匀的 X 射线响应，探测量子效率为 80%，噪声等效剂量为 153 pGyair。这种包晶 CT 成像仪能在 5.5 μSv 的低有效剂量下重建牙齿的三维结构，比牙科锥形束 CT 小两个数量级。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Perovskite computed tomography imager and three-dimensional reconstruction

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Perovskite computed tomography imager and three-dimensional reconstruction

Indirect scintillator computed tomography (CT) imaging suffers from reduced image contrast and high-dose X-ray exposure due to inevitable light losses and multiple energy conversion steps. Here we report a direct lead-halide perovskite CT imager through low-cost spray-coating processes. Detector arrays with 980 μm absorber thickness and <10 nm surface roughness yield uniform X-ray response with detection quantum efficiency of 80% and noise-equivalent dose of 153 pGyair. The perovskite CT imager affords the three-dimensional reconstruction of a tooth under a low effective dose of 5.5 μSv, about two orders of magnitude smaller than dental cone-beam CT, and low-contrast detectability by resolving a 5 Hounsfield unit difference within a 5 mm region of interest. A direct lead-halide perovskite CT imager has been demonstrated. The detector arrays have 980 μm absorber thickness and exhibit detection quantum efficiency of 80% and noise-equivalent dose of 153 pGyair.

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来源期刊

Nature Photonics 物理-光学

CiteScore

54.20

自引率

1.70%

发文量

158

审稿时长

12 months

期刊介绍： Nature Photonics is a monthly journal dedicated to the scientific study and application of light, known as Photonics. It publishes top-quality, peer-reviewed research across all areas of light generation, manipulation, and detection. The journal encompasses research into the fundamental properties of light and its interactions with matter, as well as the latest developments in optoelectronic devices and emerging photonics applications. Topics covered include lasers, LEDs, imaging, detectors, optoelectronic devices, quantum optics, biophotonics, optical data storage, spectroscopy, fiber optics, solar energy, displays, terahertz technology, nonlinear optics, plasmonics, nanophotonics, and X-rays. In addition to research papers and review articles summarizing scientific findings in optoelectronics, Nature Photonics also features News and Views pieces and research highlights. It uniquely includes articles on the business aspects of the industry, such as technology commercialization and market analysis, offering a comprehensive perspective on the field.