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X射线相位衬度CT
引用本文:章江英,高洁,江帆,陈捷,陈博,明海.X射线相位衬度CT[J].量子电子学报,2005,22(4):579-584.
作者姓名:章江英  高洁  江帆  陈捷  陈博  明海
作者单位:中国科学技术大学物理系,安徽,合肥,230026
摘    要:X射线相位衬度CT指的是在通过X射线光源来对物体进行成像过程中使用图像的位相衬度来反映物体的密度或者厚度分布,适用于弱吸收物体,还可以减少吸收剂量,放宽成像条件中光源强度的限制和减少对样品(尤其是生物样品)的损伤.介绍了目前用于X射线相位衬度CT的三种方法,实验及图像重建的过程,并分析了各自的优缺点.

关 键 词:图像处理  X射线  相位衬度
文章编号:1007-5461(2005)04-0579-06
收稿时间:2004-06-18
修稿时间:2004-08-27

X-ray phase-contrast computed tomography
ZHANG Jiang-ying,GAO Jie,JIANG Fan,CHEN Jie,CHEN Bo,MING Hai.X-ray phase-contrast computed tomography[J].Chinese Journal of Quantum Electronics,2005,22(4):579-584.
Authors:ZHANG Jiang-ying  GAO Jie  JIANG Fan  CHEN Jie  CHEN Bo  MING Hai
Abstract:X-ray phase-contrast computed tomography (CT) is based on the difference in phase contrast of the materials during imaging by X-ray to describe the density or thickness of the materials. The use of phase contrast is suitable for weak-absorption materials and to diminish the total absorption dose, enhancing the conditions of the entire imaging procedure and decreasing the damage to the materials. In this paper, we introduce and compared three methods used for X-ray phase-contrast computed tomography, the experiments and the process of image reconstruction.
Keywords:CT
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