Pseudo-global tomography for local micro-computed tomography with high-brightness synchrotron X-rays  

作　　者：陈文豪 王玉丹 刘慧强 邓彪 杨玉双 肖体乔 

机构地区：[1]Shanghai Synchrotron Radiation Facility,Shanghai Institute of Applied Physics,Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]CSIRO Materials Science and Engineering,Private Bag 33,Clayton South,Victoria 3169,Australia

出　　处：《Chinese Optics Letters》2014年第2期78-81,共4页中国光学快报（英文版）

基　　金：supported by the National Basic Research Program of China(No.2010CB834301);the National Natural Science Foundation of China(No.U1232205 and 11105213);the CAS-CSIRO cooperation research project(No.GJHZ1303)

摘　　要：The computed tomography imaging of a local region inside a sample with a size larger than the field of view is particularly important for synchrotron X-ray imaging.In this letter,an improved algorithm is proposed to reconstruct the local structure inside a sample using almost completely local data.The algorithm significantly reduces the X-ray radiation dose and improves computational efficiency.Simulation results show that the new algorithm works well and has a higher reconstruction precision than previous methods,as confirmed by experimental results carried out at the Shanghai Synchrotron Radiation Facility.The computed tomography imaging of a local region inside a sample with a size larger than the field of view is particularly important for synchrotron X-ray imaging.In this letter,an improved algorithm is proposed to reconstruct the local structure inside a sample using almost completely local data.The algorithm significantly reduces the X-ray radiation dose and improves computational efficiency.Simulation results show that the new algorithm works well and has a higher reconstruction precision than previous methods,as confirmed by experimental results carried out at the Shanghai Synchrotron Radiation Facility.

关 键 词：ALGORITHMS Computerized tomography 

分 类 号：O434.1[机械工程—光学工程]