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2007
IEEE

Fast Image Reconstruction Methods for Fully 3d Multispectral Optical Bioluminescence Tomography

9 years 3 months ago
Fast Image Reconstruction Methods for Fully 3d Multispectral Optical Bioluminescence Tomography
We investigate fast iterative image reconstruction methods for fully 3D multispectral optical bioluminescence tomography where inhomogeneous optical properties are modeled using the finite element method (FEM). We compare two approaches to incorporating the forward model into the solution of the inverse problem. In the direct calculation approach we compute the full forward model by repeated solution of the FEM problem, once for each potential source location. In the on-thefly approach, we do not explicitly solve for the full forward model. Instead, the solution to the forward problem is included implicitly in the formulation of the inverse problem, and the FEM is solved once at each iteration for the current image estimate. In both approaches we use reordered Cholesky factorization and substitution (CFS) to solve the FEM problem. We compare the computation cost of these two approaches, concluding that the on-the-fly approach can lead to substantial reductions in cost when combined...
Sangtae Ahn, Abhijit J. Chaudhari, Felix Darvas, C
Added 03 Jun 2010
Updated 03 Jun 2010
Type Conference
Year 2007
Where ISBI
Authors Sangtae Ahn, Abhijit J. Chaudhari, Felix Darvas, Charles A. Bouman, Richard M. Leahy
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