FDTD Analysis of Spatial Filtering of Scattered Waves for Optical CT of Medical Diagnosis
Medical image diagnosis and computer aided diagnosis are modern important medical techniques developed with computer technology. Particularly, medical image diagnosis using optical waves of lasers is very important technical tools for physiological examination of human body. Transmission properties mainly depend on optical absorption effects due to biological characteristics consisting of atomic and molecular structure. Image responses of optical transmitted projection include optical scattering characteristics that disturb transmission properties through biological structures. Computer numerical simulations of spatial filtering for optical scattering superposed on transmitted and attenuated waves are discussed to improve image diagnosis. By numerical simulation of FDTD method, statistical characteristics of optical waves are discussed for optical propagation, attenuation and scattering in random inhomogeneous biological media that consist of random particle models given by random numbers programming. Spatial filtering characteristics of grid structure are shown for exact image optical projection excluding scattering effects through physiological media. Spatial filtering characteristics for off-axial scattering optical waves are graphically shown by propagation properties with large attenuation in lossy waveguide-type grids by FDTD method.
Yasumitsu Miyazaki Kouhei Kouno
Department of Media Informatics,Aichi University of Technology 50-2 Manori,Nishihazama-cho,Gamagori 443-0047,Japan
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
1567-1572
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）