首页 | 本学科首页   官方微博 | 高级检索  
     检索      

声衍射层析成像研究进展
引用本文:王朔中,方针.声衍射层析成像研究进展[J].声学技术,2010,29(2):117-122.
作者姓名:王朔中  方针
作者单位:上海大学通信与信息工程学院,上海,200072
摘    要:在计算机层析成像中用声波或电磁波取代X射线照射目标时波长不能再看作无限小,需要将Fourier切片定理修改为Fourier衍射投影定理,基于射线的CT相应地推广为衍射CT。概述了近年来衍射CT的发展,特别是声衍射CT。在理论和算法方面讨论了非均匀Fourier变换算法及其实现、仅根据强度信息的图像重建方法、多频率入射的情况、不完整测量数据条件下的图像重建等问题。此外还扼要介绍了不同领域中衍射CT的研究和应用情况。

关 键 词:衍射层析成像  Fourier衍射投影定理  非均匀Fourier变换

Progress in acoustic diffraction tomography research
WANG Shuo-zhong,FANG Zhen.Progress in acoustic diffraction tomography research[J].Technical Acoustics,2010,29(2):117-122.
Authors:WANG Shuo-zhong  FANG Zhen
Institution:WANG Shuo-zhong,FANG Zhen (School of Communication , Information Engineering,Shanghai University,Shanghai 200072,China)
Abstract:In computer tomography (CT), when an acoustic or electromagnetic wave of finite wavelength is used instead of X-ray to illuminate the object, the Fourier slice theorem should be replaced by the Fourier diffraction theorem, leading to diffraction tomography. This article presents a review of the recent development of diffraction tomography, especially acoustic tomography. Issues discussed include algorithms of non-uniform Fourier transform and its fast implementation, image reconstruction based on intensity ...
Keywords:diffraction tomography  Fourier diffraction theorem  non-uniform Fourier transform  
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号