Download or read book Photon Migration in Turbid Media written by Jun Wu and published by . This book was released on 1996 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Apparatus and Method for Qualitative and Quantitative Measurements of Optical Properties of Turbid Media Using Frequency domain Photon Migration written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical measurements of turbid media, that is media characterized by multiple light scattering, is provided through an apparatus and method for exposing a sample to a modulated laser beam. The light beam is modulated at a fundamental frequency and at a plurality of integer harmonics thereof. Modulated light is returned from the sample and preferentially detected at cross frequencies at frequencies slightly higher than the fundamental frequency and at integer harmonics of the same. The received radiance at the beat or cross frequencies is compared against a reference signal to provide a measure of the phase lag of the radiance and modulation ratio relative to a reference beam. The phase and modulation amplitude are then provided as a frequency spectrum by an array processor to which a computer applies a complete curve fit in the case of highly scattering samples or a linear curve fit below a predetermined frequency in the case of highly absorptive samples. The curve fit in any case is determined by the absorption and scattering coefficients together with a concentration of the active substance in the sample. Therefore, the curve fitting to the frequency spectrum can be used both for qualitative and quantitative analysis of substances in the sample even though the sample is highly turbid.

Download or read book Proceedings of Photon Migration and Imaging in Random Media and Tissues written by Society of Photo-optical Instrumentation Engineers and published by SPIE-International Society for Optical Engineering. This book was released on 1993 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photon Migration and Diffuse light Imaging written by and published by . This book was released on 2005 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of Optical Tomography Photon Migration and Spectroscopy of Tissue and Model Media written by and published by . This book was released on 1995 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Optical Imaging and Photon Migration written by James G. Fujimoto and published by . This book was released on 1998 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photon Migration and Imaging in Random Media and Tissues written by and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microscopic Imaging Through Turbid Media written by Min Gu and published by Springer. This book was released on 2015-04-08 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a systematic introduction to the principles of microscopic imaging through tissue-like turbid media in terms of Monte-Carlo simulation. It describes various gating mechanisms based on the physical differences between the un scattered and scattered photons and method for microscopic image reconstruction, using the concept of the effective point spread function. Imaging an object embedded in a turbid medium is a challenging problem in physics as well as in bio photonics. A turbid medium surrounding an object under inspection causes multiple scattering, which degrades the contrast, resolution and signal-to-noise ratio. Biological tissues are typically turbid media. Microscopic imaging through a tissue-like turbid medium can provide higher resolution than transillumination imaging in which no objective is used. This book serves as a valuable reference for engineers and scientists working on microscopy of tissue turbid media.

Download or read book Photon Migration in Tissues written by B. Chance and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is formulated from a number of presentations made at a one-day workshop on the subject of Photon Migration in Tissues. The meeting was held in Philadelphia at the University of Pennsylvania, April, 1988. The workshop was an impromptu effort to bring together scientists to discuss photon migration in animal tissues and appropriate models. The rapid emergence of the ideas of Townes and Schalow in their invention of the then called maser, now laser opened up completely unexpected possibilities for biomedical research. Timing of rapid biochemical reaction, identification of unstable intermediates, spectroscopy of short lived fluorescent states were all goals to be expected and achieved. At the same time continuous light spectroscopy of tissue slices and of the myocardium, and eventually of the brain have the to the the neonate emerged over years. Shifting red end of spectrum, Butler and Norris clearly showed how transparent plant materials and the human hand could be illuminated in this region and Jobsis applied their idea to the neonate brain using a multiwavelength technique.

Download or read book Photon Migration Diffuse Spectroscopy and Optical Coherence Tomography written by Stefan Andersson-Engels and published by SPIE-International Society for Optical Engineering. This book was released on 2000 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of Optical Tomography Photon Migration and Spectroscopy of Tissue and Model Media written by and published by . This book was released on 1995 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Biophotonics written by Ruikang K. Wang and published by Taylor & Francis. This book was released on 2016-04-19 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite a number of books on biophotonics imaging for medical diagnostics and therapy, the field still lacks a comprehensive imaging book that describes state-of-the-art biophotonics imaging approaches intensively developed in recent years. Addressing this shortfall, Advanced Biophotonics: Tissue Optical Sectioning presents contemporary methods and

Download or read book Advances in Optical Imaging and Photon Migration written by Robert R. Alfano and published by Optical Society of Amer. This book was released on 1996-01-01 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The second in a biennial series initiated in 1994 to provide a forum for discussion of latest developments in optical imaging and photon migration through turbid media."--Pref.

Download or read book Photon Migration and Imaging of Objects Hidden in Layered and Bulk Random Scattering Media written by Jean J. Dolne and published by . This book was released on 1996 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of Photon Transport in Highly Scattering Tissue written by Society of Photo-optical Instrumentation Engineers and published by SPIE-International Society for Optical Engineering. This book was released on 1995 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biomedical Photonics Handbook written by Tuan Vo-Dinh and published by CRC Press. This book was released on 2003-03-26 with total page 1864 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wide variety of biomedical photonic technologies have been developed recently for clinical monitoring of early disease states; molecular diagnostics and imaging of physiological parameters; molecular and genetic biomarkers; and detection of the presence of pathological organisms or biochemical species of clinical importance. However, available in

Download or read book Analytic Transfer Function of the Forward Propagation of Diffuse Photon Density Waves in Turbid Media with an Embedded Spherical Inhomogeneity written by Deborah L. Lasocki and published by . This book was released on 1997-12-01 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diffusing photons can be used to detect and localize optical inhomogeneities embedded in turbid media such as clouds, fog, paint and human tissue. This thesis shows that a transfer function derived from an analytic solution of the Helmholtz equation can completely characterize in three dimensions the perturbations in the forward propagation phenomena caused by a spherical defect object in a multiple-scattering medium. Two models of the forward propagation behavior of diffuse photon density waves in homogeneous, infinite, turbid media that contains a spherical inhomogeneity are examined. The first model is an exact analytic solution based on a modal expansion in spherical harmonics. The second model uses Fourier optics theory for wave propagation in a plane through homogeneous turbid media containing a spherical lens. The Fourier optics model is found to be a good approximation to the exact analytic solution when the optical absorptive contrast of the inhomogeneity and the surrounding media is weakly perturbative, and the detector is not near the inhomogeneity. Using linear system theory, a transfer function from the analytic model is derived. This function improves the Fourier optics model by replacing the spherical lens approximation with an exact representation of the system perturbation behavior. The transfer function is shown through simulation to completely characterize the sensitivity of the system to detect and localize in three dimensions inhomogeneities of varying optical contrast with the surrounding media.