基于碳纳米管阴极的X射线源与成像技术进展

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

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。

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.