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Your search keyword '"Lionel Hervé"' showing total 6 results
Start Over Author "Lionel Hervé" Journal biomedical optics and 3-d imaging
6 results on '"Lionel Hervé"'

1. Time-Resolved Reflectance DOT: Experimental Results for Imaging Absorption Contrast in Depth

Author

Jacques Derouard, Agathe Puszka, Jean-Marc Dinten, Anne Planat-Chrétien, Mathieu Debourdeau, Lionel Hervé, Anne Koenig, Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] (LIPhy ), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] (LIPhy), and Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Point spread function, Photon, Materials science, Tomographic reconstruction, business.industry, Instrumentation, media_common.quotation_subject, 010401 analytical chemistry, 01 natural sciences, Reflectivity, Diffuse optical imaging, 030218 nuclear medicine & medical imaging, 0104 chemical sciences, Absorption contrast, 03 medical and health sciences, 0302 clinical medicine, Optics, Contrast (vision), business, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, media_common
Abstract

International audience; Detecting and localizing precisely contrast in depth is the major challenge of reflectance Diffuse Optical Tomography. We present a dedicated time-resolved instrumentation and first experimental results using a Mellin-Laplace Transform based method.

Published
2012
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2. Time-Resolved Reflectance Diffuse Optical Tomography by using Mellin-Laplace Transform

Author

Agathe Puszka, Anne Planat-Chrétien, Anne Koenig, Jean-Marc Dinten, Lionel Hervé, Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
Optics, Materials science, Light propagation, Laplace transform, business.industry, Attenuation coefficient, Physics::Optics, business, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, Reflectivity, Diffuse optical imaging
Abstract

International audience; In this paper, we show how the Mellin-Laplace Transform helps to obtain robust and relevant reconstructions of deep optical heterogeneity from time-resolved diffuse optical tomography measurements.

Published
2012
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3. Non-Negative Matrix Factorization to unmix several fluorescence spectra and remove autofluorescence from in vivo spectrally resolved acquisitions

Author

Jean-Marc Dinten, Anne-Sophie Montcuquet, Fabrice Navarro, Lionel Hervé, and Jerome Mars

Subjects
Specific fluorescence, Autofluorescence, Nuclear magnetic resonance, In vivo, Chemistry, Blind signal separation, Fluorescence spectra, Near infrared radiation, Fluorescence, Non-negative matrix factorization
Abstract

Plurality of specific fluorescent markers in multiplexing, and autofluorescence of biological tissues limit specific fluorescence detection. A spectroscopic approach and a blind source separation method are proposed to unmix multiple fluorescence spectra and remove autofluorescence.

Published
2010
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4. Quantitative results of a bi-modal X-ray fDOT system in a cylindrical geometry

Author

Anne Planat-Chrétien, Lionel Hervé, Ludovic Lecordier, Jean-Guillaume Coutard, Jean-Marc Dinten, Anne Koenig, and Marco Brambilla

Subjects
Coupling, Cylindrical geometry, Materials science, Bi modal, Optics, Molecular fluorescence, business.industry, X-ray, Image processing, Focus (optics), business, Diffuse optical imaging
Abstract

We develop a new instrument that couple cylindrical fluorescence diffuse optical tomography to a micro XCT system. We focus on the effective coupling between both modalities via the fDOT algorithm. Quantitative results are provided.

Published
2010
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5. Non-Negative Matrix Factorization to remove autofluorescence of tissues and improve FDOT

Author

Anne-Sophie Montcuquet, Jean-Marc Dinten, Lionel Hervé, and Jerome Mars

Subjects
Autofluorescence, Optics, Materials science, Infrared, business.industry, Tomography, business, Blind signal separation, Signal, Fluorescence, Diffuse optical imaging, Non-negative matrix factorization
Abstract

Autofluorescence of biological tissues limits deep fluorescent markers detection. A spectroscopic approach and a blind source separation method are explored to remove the autofluorescence signal. We show how this pre-processing improves Fluorescent Diffuse Optical Tomography.

Published
2010
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6. A Finite Volume Method for Fluorescence Diffuse Optical Tomography: Influence on Forward Model and Reconstruction

Author

Lionel Hervé, Françoise Peyrin, Jean-Marc Dinten, and Ludovic Lecordier

Subjects
Physics, Optics, Finite volume method, business.industry, Attenuation coefficient, Tomography, business, Fluorescence, Photon counting, Diffuse optical imaging, Finite element method
Abstract

This paper presents a finite volume method to compute the forward model in fluorescence diffuse optical tomography. The method is compared to the finite element method in regards of both forward model and reconstruction accuracy.

Published
2010
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