Dr. Alexander B. Konovalov Profile

Dr. Alexander B. Konovalov

Leading Scientist

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Publications (17)

SPIE Journal Paper | 12 December 2022 Open Access

Reconstruction of fluorophore absorption and fluorescence lifetime using early photon mesoscopic fluorescence molecular tomography: a phantom study

Alexander Konovalov, Vitaly Vlasov, Sergei Samarin, Ilya Soloviev, Alexander Savitsky, Valery Tuchin

JBO, Vol. 27, Issue 12, 126001, (December 2022) https://doi.org/10.1117/12.10.1117/1.JBO.27.12.126001

KEYWORDS: Fluorescence, Fluorophores, Reconstruction algorithms, Picosecond phenomena, Light absorption, Absorption, Matrices, Image restoration, Fluorescence tomography, Data modeling

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Proceedings Article | 9 April 2020 Paper

A new method for separate reconstruction of fluorophore absorption and fluorescence lifetime in time domain: first results of a numerical experiment

Alexander Konovalov, Vitaly Vlasov

Proceedings Volume 11457, 1145703 (2020) https://doi.org/10.1117/12.2560139

KEYWORDS: Luminescence, Absorption, Photons, Visualization, Tomography, Scattering, Diffusion, Fluorescence tomography, Receivers, Reconstruction algorithms, Numerical modeling

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SPIE Journal Paper | 9 July 2018

Hybrid algorithm for few-views computed tomography of strongly absorbing media: algebraic reconstruction, TV-regularization, and adaptive segmentation

Vitaly V. Vlasov, Alexander B. Konovalov, Sergey V. Kolchugin

JEI, Vol. 27, Issue 04, 043006, (July 2018) https://doi.org/10.1117/12.10.1117/1.JEI.27.4.043006

KEYWORDS: Reconstruction algorithms, Image segmentation, Tomography, Computed tomography, Image processing algorithms and systems, Algorithm development, Data modeling, Metals, Sensors, Resistance

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Proceedings Article | 21 April 2016 Paper

Total variation based reconstruction of scattering inhomogeneities in tissue from time-resolved optical projections

Alexander Konovalov, Vitaly Vlasov

Proceedings Volume 9917, 99170S (2016) https://doi.org/10.1117/12.2229846

KEYWORDS: Reconstruction algorithms, Scattering, Tissue optics, Diffuse optical tomography, Numerical modeling, Diffusion, Receivers, Tissues, Data modeling, Spatial resolution, Picosecond phenomena

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Proceedings Article | 30 January 2014 Paper

Spatial resolution analysis for time-domain diffuse optical tomography based on a perturbation model

Alexander Konovalov, Vitaly Vlasov

Proceedings Volume 9031, 903104 (2014) https://doi.org/10.1117/12.2052831

KEYWORDS: Point spread functions, Photons, Spatial resolution, Reconstruction algorithms, Modulation transfer functions, Scattering, Diffuse optical tomography, Sensors, Projection systems, Data modeling

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Proceedings Article | 15 June 2011 Paper

A semi-analytical perturbation model for diffusion tomogram reconstruction from time-resolved optical projections

Alexander Konovalov, Vitaly Vlasov, Alexander Uglov, Vladimir Lyubimov

Proceedings Volume 8088, 80880T (2011) https://doi.org/10.1117/12.889755

KEYWORDS: Diffusion, Projection systems, Scattering, Receivers, Reconstruction algorithms, Diffuse optical tomography, Tissue optics, Chemical elements, Radiative transfer, Spatial resolution

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Proceedings Article | 10 July 2009 Paper

Nonlinear color segmentation of optical diffusion tomograms reconstructed by the photon average trajectory method

Alexander Konovalov, Vitaly Vlasov, Dmitry Mogilenskikh, Igor Pavlov

Proceedings Volume 7369, 73690I (2009) https://doi.org/10.1117/12.831694

KEYWORDS: Image segmentation, Californium, Nonlinear optics, Image restoration, Acquisition tracking and pointing, Diffusion, Statistical analysis, Scattering, Inverse optics, Diffuse optical tomography

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Proceedings Article | 19 May 2006 Paper

Diffuse optical tomogram restoration with spatially variant point spread function

Alexander Konovalov

Proceedings Volume 6257, 62570Q (2006) https://doi.org/10.1117/12.678374

KEYWORDS: Acquisition tracking and pointing, Point spread functions, Reconstruction algorithms, Receivers, Spatial resolution, Inverse optics, Computer simulations, Image segmentation, Image restoration, Finite element methods

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Proceedings Article | 8 October 2005 Paper

Space-varying restoration of diffuse optical tomograms reconstructed by the filtered backprojection algorithm

Alexander Konovalov, Dmitry Mogilenskikh, Vladimir Lyubimov

Proceedings Volume 5859, 585918 (2005) https://doi.org/10.1117/12.632874

KEYWORDS: Reconstruction algorithms, Acquisition tracking and pointing, Point spread functions, Detection and tracking algorithms, Inverse optics, Sensors, Spatial resolution, Optical filters, Resolution enhancement technologies, Diffuse optical tomography

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Proceedings Article | 20 August 2004 Paper

High-resolution restoration of diffuse optical images reconstructed by the photon average trajectories method

Alexander Konovalov, Vladimir Lyubimov

Proceedings Volume 5474, (2004) https://doi.org/10.1117/12.578354

KEYWORDS: Reconstruction algorithms, Acquisition tracking and pointing, Spatial resolution, Point spread functions, Lawrencium, Deconvolution, Inverse optics, Receivers, Expectation maximization algorithms, Diffusion

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SPIE Journal Paper | 1 October 2003

Application of transform algorithms to high-resolution image reconstruction in optical diffusion tomography of strongly scattering media

Alexander Konovalov, Vladimir Lyubimov, Igor Kutuzov, Olga Kravtsenyuk, Alexander Murzin, Gennadiy Mordvinov, Leonid Soms, Lyudmila Yavorskaya

JEI, Vol. 12, Issue 04, (October 2003) https://doi.org/10.1117/12.10.1117/1.1604119

KEYWORDS: Reconstruction algorithms, Acquisition tracking and pointing, Receivers, Image restoration, Spatial resolution, Diffusion, Inverse optics, Tissue optics, Fluctuations and noise, Tomography

Proceedings Article | 12 September 2002 Paper

Application of integral transform algorithms to high-resolution reconstruction of tissue inhomogeneities in medical diffuse optical tomography

Alexander Konovalov, Vladimir Lyubimov, Igor Kutuzov, Olga Kravtsenyuk, Alexander Murzin, Gennadiy Mordvinov, Leonid Soms, Lyudmila Yavorskaya

Proceedings Volume 4916, (2002) https://doi.org/10.1117/12.482960

KEYWORDS: Reconstruction algorithms, Acquisition tracking and pointing, Receivers, Spatial resolution, Tissue optics, Fluctuations and noise, Radon, Inverse optics, Diffuse optical tomography, Inverse problems

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Proceedings Article | 16 July 2002 Paper

Influence of fast reconstruction algorithms on spatial resolution of optical diffuse tomography by photon average trajectories method

Vladimir Lyubimov, Alexander Konovalov, Igor Kutuzov, Olga Kravtsenyuk, Alexander Kalintsev, Alexander Murzin, Olga Golubkina, Leonid Soms, Lyudmila Yavorskaya

Proceedings Volume 4707, (2002) https://doi.org/10.1117/12.475588

KEYWORDS: Reconstruction algorithms, Spatial resolution, Acquisition tracking and pointing, Tomography, Diffuse optical tomography, Optical tomography, Point spread functions, Modulation transfer functions, Radon, Image resolution

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Proceedings Article | 2 November 2001 Paper

Use of backprojection algorithms of filtered shadows for optical tomography of strongly scattering media

Alexander Kalintsev, Alexander Konovalov, Olga Kravtsenyuk, Igor Kutuzov, Oleg Lyamtsev, Vladimir Lyubimov, Alexander Murzin, Leonid Soms

Proceedings Volume 4431, (2001) https://doi.org/10.1117/12.447433

KEYWORDS: Reconstruction algorithms, Acquisition tracking and pointing, Sensors, Optical tomography, Algorithm development, Detection and tracking algorithms, Fluctuations and noise, Scattering media, Optical filters, Convolution

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Proceedings Article | 2 November 2001 Paper

Application of photon average trajectories method for separate mapping of absorbing and scattering macroinhomogeneities using time-domain measurements technique

Olga Golubkina, Alexander Kalintsev, Alexander Konovalov, Olga Kravtsenyuk, Oleg Lyamtsev, Vladimir Lyubimov, Gennadiy Mordvinov, Alexander Murzin, Leonid Soms, Natalie Tokareva, Lyudmila Yavorskaya

Proceedings Volume 4431, (2001) https://doi.org/10.1117/12.447434

KEYWORDS: Scattering, Diffusion, Acquisition tracking and pointing, Sensors, Absorption, Picosecond phenomena, Laser scattering, Optical tomography, Tomography, Finite element methods

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Proceedings Article | 29 June 2001 Paper

Application of photon average trajectory approach for diffuse tomography reconstruction of strongly scattering objects with complex macroinhomogeneities

Olga Kravtsenyuk, Vladimir Lyubimov, Alexander Murzin, Alexander Kalintsev, Olga Golubkina, Alexander Konovalov, Oleg Lyamtsev, Gennadiy Mordvinov, Peter Volegov, Lyudmila Yavorskaya

Proceedings Volume 4250, (2001) https://doi.org/10.1117/12.434479

KEYWORDS: Acquisition tracking and pointing, Tomography, Image restoration, Reconstruction algorithms, Scattering, Diffusion, Optical tomography, Finite element methods, Image quality, Inverse optics

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Proceedings Article | 31 May 2001 Paper

Optical diffuse tomography reconstruction using photon average trajectory

Alexander Kalintsev, Olga Kravtsenyuk, Vladimir Lyubimov, Alexander Murzin, Olga Golubkina, Alexander Konovalov, Oleg Lyamtsev, Gennadiy Mordvinov, Peter Volegov

Proceedings Volume 4242, (2001) https://doi.org/10.1117/12.427755

KEYWORDS: Reconstruction algorithms, Tomography, Optical tomography, Diffuse optical tomography, Acquisition tracking and pointing, Scattering, Diffusion, Absorption, Finite element methods, Algorithm development

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Showing 5 of 17 publications

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