Algebraic reconstruction and postprocessing in one-step diffuse optical tomography

Journal Article · Mon Jun 30 04:00:00 EDT 2008 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2008V038N06ABEH013834· OSTI ID:21466877

Konovalov, A B; Vlasov, V V; Mogilenskikh, D V ^[1]; Kravtsenyuk, O V ^[2]; Lyubimov, V V ^[3]

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1. E. I. Zababakhin All-Russian Scientific-Research Institute of Technical Physics, Russian Federal Nuclear Centre, Snezhinsk, Chelyabinsk region (Russian Federation)
2. Foundation for Research and Technology-Hellas (IESL-FORTH), Institute of Electronic Structure and Lasers, Crete (Greece)
3. Institute for Laser Physics, Federal State Unitary Enterprise 'Scientific and Industrial Corporation 'Vavilov State Optical Institute', St. Petersburg (Russian Federation)

The photon average trajectory method is considered, which is used as an approximate method of diffuse optical tomography and is based on the solution of the Radon-like trajectory integral equation. A system of linear algebraic equations describing a discrete model of object reconstruction is once inverted by using a modified multiplicative algebraic technique. The blurring of diffusion tomograms is eliminated by using space-varying restoration and methods of nonlinear colour interpretation of data. The optical models of the breast tissue in the form of rectangular scattering objects with circular absorbing inhomogeneities are reconstructed within the framework of the numerical experiment from optical projections simulated for time-domain measurement technique. It is shown that the quality of diffusion tomograms reconstructed by this method is close to that of tomograms reconstructed by using Newton-like multistep algorithms, while the computational time is much shorter. (special issue devoted to application of laser technologies in biophotonics and biomedical studies)

• OSTI ID: 21466877
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 6 Vol. 38; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALGORITHMS
APPROXIMATIONS
BIOLOGICAL RECOVERY
BODY
BOSONS
CALCULATION METHODS
COLOR
DIAGNOSTIC TECHNIQUES
DIFFUSION
ELEMENTARY PARTICLES
ELEMENTS
EQUATIONS
FLUIDS
GASES
GLANDS
INTEGRAL EQUATIONS
LASERS
MAMMARY GLANDS
MASSLESS PARTICLES
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MATHEMATICAL SOLUTIONS
NONLINEAR PROBLEMS
NONMETALS
OPTICAL MODELS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
ORGANS
PHOTONS
PHYSICAL PROPERTIES
RADON
RARE GASES
SCATTERING
SIMULATION
TOMOGRAPHY