基于碳纳米管阴极的X射线源与成像技术进展

基金项目:

国家自然科学基金青年科学基金项目(61102161)

国家科技支撑计划项目(2012BAI3B04)

详细信息

Development of CNT Cathode Based X-ray Source and Imaging Technology

Paul Lauterbur Center for Biomedical Imaging Research, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China

摘要: 以碳纳米管作为阴极材料的场致发射X射线源及成像技术是近几年国际上的研究前沿,也是X射线成像技术的重要发展趋势之一。相比传统热电子发射X射线源而言,碳纳米管X射线源具有结构紧凑、高时间分辨率、可编程式发射等优势。基于这些特征衍生了一些新型的X射线成像技术。本文将介绍近几年来,基于碳纳米管阴极的X射线源与成像技术的最新进展。
- CT /
- 成像技术 /
- X射线源 /
- 碳纳米管 /
- 场致发射
Abstract: Carbon nanotube(CNT) cathode based field emission X-ray source and imaging techniques as an important development for X-ray CT technology,has generated much interest in recent years.Compared to the more traditional thermal emission X-ray source,CNT X-ray source possesses several desirable attributes such as miniaturization,fast response time,efficient-focusing and improved control of emitted electrons.Thus,an imaging tool based on these attributes will contribute significantly to the field of X-ray imaging within both medicine and industry.In this paper,the development of CNT cathode based X-ray source and imaging methodologies will be discussed.
- computed tomography /
- imaging technology /
- X-ray source /
- carbon nanotube /
- field emission