A fast surface reconstruction method for fluorescence molecular tomography based on cross-beam edge back projection

被引:2
作者
Zhang, S. [1 ]
Chen, Q. X. [1 ]
Luo, J. W. [1 ,2 ]
Bai, J. [1 ]
机构
[1] Tsinghua Univ, Sch Med, Dept Biomed Engn, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Ctr Biomed Imaging Res, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
Back projection; Surface reconstruction; Fast algorithm; Fluorescence molecular tomography; NONCONTACT; LIGHT;
D O I
10.1016/j.measurement.2012.11.020
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An accurate surface reconstruction method is important to fluorescence molecular tomography (FMT) for it provides boundary information of the domain occupied by the image object which is essential to modeling light propagation in free space and inside the object. In this paper, a method based on cross-beam edge back projection (CEBP) is proposed to achieve fast and three-dimensional (3D) surface reconstruction for FMT. This method consists of a cost effective and easy-to-implement setup; it back-projects the edge of an image object of all projection angles along the actual light propagation path to perform 3D surface reconstruction. Simulation studies and experiments were performed to compare the reconstruction accuracy and computational cost of the CEBP based method and the conventional radon transform (RT) based method. Results demonstrate that the CEBP based method significantly accelerates surface reconstruction compared with the RT based method while keeping similar accuracy. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1565 / 1571
页数:7
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