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	An EM-like optimization scheme for diffuse optical tomography
	Wang, Caifang ; Jiang, Ming
	2008
关键词	Diffusion optical tomography (DOT) Kuhn-Tucker condition EM method diffusion coefficient absorption coefficient log-likelihood IMAGE-RECONSTRUCTION INVERSE PROBLEM BIOLUMINESCENCE TOMOGRAPHY REFLECTION MEASUREMENTS BLOOD-VOLUME BREAST SCATTERING BRAIN MEDIA ABSORPTION
英文摘要	Diffuse Optical Tomography (DOT) is a functional medical imaging modality which can determine the spatial optical parameters' distributions inside a medium. The forward model of DOT is described by the diffusion approximation of radiative transform equation (RTE) while the DOT is to recover optical parameters of a medium from the boundary measurements induced by external near-infared (NIB,) light. In this paper, we propose a mathematic model of DOT and then give a novel iterative reconstruction method of the proposed model. The new iterative reconstruction method is based on the assumption that the measurement noise is Poissonian while previous iterative reconstruction methods are mostly base on the assumption that the measurement noise is Gaussian, and are of least-squares type. The proposed algorithm is a variant of the well-known EM algorithm. It can also be used to deal with the incomplete boundary measurements. The performance of the reconstruction algorithm including spatial resolution and contrast are investigated with 2-dimensional numerical experiments.; Instruments & Instrumentation; Optics; Imaging Science & Photographic Technology; CPCI-S(ISTP); 1
语种	英语
出处	SCI
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/315435]
专题	数学科学学院
推荐引用方式 GB/T 7714	Wang, Caifang,Jiang, Ming. An EM-like optimization scheme for diffuse optical tomography. 2008-01-01.

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