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Mesh‐based enhancement schemes in diffuse optical tomography
Author(s) -
Gu Xuejun,
Xu Yong,
Jiang Huabei
Publication year - 2003
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.1566389
Subject(s) - imaging phantom , iterative reconstruction , computer science , optical tomography , diffuse optical imaging , polygon mesh , mesh generation , tomography , adaptive mesh refinement , computer vision , optics , finite element method , algorithm , computational science , artificial intelligence , computer graphics (images) , physics , thermodynamics
Two mesh‐based methods including dual meshing and adaptive meshing are developed to improve the finite element‐based reconstruction of both absorption and scattering images of heterogeneous turbid media. The idea of dual meshing scheme is to use a fine mesh for the solution of photon propagation and a coarse mesh for the inversion of optical property distributions. The adaptive meshing method is accomplished by the automatic mesh refinement in the region of heterogeneity during reconstruction. These schemes are validated using tissue‐like phantom measurements. Our results demonstrate the capabilities of the dual meshing and adaptive meshing in both qualitative and quantitative improvement of optical image reconstruction.