Improved AFEM algorithm for bioluminescence tomography based on dual-mesh alternation strategy  被引量:1

Improved AFEM algorithm for bioluminescence tomography based on dual-mesh alternation strategy

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作  者:李维 赵恒 屈晓超 侯彦宾 陈雪利 陈多芳 贺小伟 张岐坦 梁继民 

机构地区:[1]Life Sciences Research Center,School of Life Sciences and Technology,Xidian University

出  处:《Chinese Optics Letters》2012年第2期71-74,共4页中国光学快报(英文版)

基  金:supported by the National "973" Program of China (No.2011CB707702);the National Natural Science Foundation of China (Nos.81090272,81000632,and 30900334);the Shaanxi Provincial Natural Science Foundation Research Project (No.2009JQ8018);the Fundamental Research Funds for the Central Universities

摘  要:Adaptive finite element method (AFEM) is broadly adopted to recover the internal source in biological tissues. In this letter, a novel dual-mesh alternation strategy (dual-mesh AFEM) is developed for bioluminescence tomography. By comprehensively considering the error estimation of the finite element method solution on each mesh, two different adaptive strategies based on the error indicator of the reconstructed source and the photon flux density are used alternately in the process. Combined with the constantly adjusted permissible region in the adaptive process, the new algorithm can achieve a more accurate source location compared with the AFEM in the previous experiments.Adaptive finite element method (AFEM) is broadly adopted to recover the internal source in biological tissues. In this letter, a novel dual-mesh alternation strategy (dual-mesh AFEM) is developed for bioluminescence tomography. By comprehensively considering the error estimation of the finite element method solution on each mesh, two different adaptive strategies based on the error indicator of the reconstructed source and the photon flux density are used alternately in the process. Combined with the constantly adjusted permissible region in the adaptive process, the new algorithm can achieve a more accurate source location compared with the AFEM in the previous experiments.

关 键 词:Algorithms BIOLUMINESCENCE Finite element method TOMOGRAPHY 

分 类 号:Q503[生物学—生物化学]

 

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