Download or read book Laser Interaction with Heterogeneous Biological Tissue written by Kirill Kulikov and published by Springer. This book was released on 2018-06-27 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to the principles of laser interaction with biological cells and tissues with varying degrees of organization. In addition to considering the problems of biomedical cell diagnostics, and modeling the scattering of laser irradiation of blood cells for biological structures (dermis, epidermis, vascular plexus), it presents an analytic theory based on solving the wave equation for the electromagnetic field. It discusses a range of mathematical modeling topics, including optical characterization of biological tissue with large-scale and small-scale inhomogeneities in the layers; heating blood vessels using laser irradiation on the outer surface of the skin; and thermo-chemical denaturation of biological structures based on the example of human skin. In this second edition, a new electrodynamic model of the interaction of laser radiation with blood cells is presented for the structure of cells and the in vitro prediction of optical properties. The approach developed makes it possible to determine changes in cell size as well as modifications in their internal structures, such as transformation and polymorphism nucleus scattering, which is of interest for cytological studies. The new model is subsequently used to calculate the size distribution function of irregular-shape particles with a variety of forms and structures, which allows a cytological analysis of the observed deviations from normal cells.
Download or read book Laser Tissue Interactions written by Markolf H. Niemz and published by Springer Science & Business Media. This book was released on 2007-08-27 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medical practitioners, scientists and graduate students alike will find this exhaustive survey a vital learning tool. It provides a thorough description of the fundamentals and applications in the field of laser-tissue interactions. Basic concepts such as the optical and thermal properties of tissue, the various types of tissue ablation, and optical breakdown and its related effects are treated in detail. The author pays special attention to mathematical tools (Monte Carlo simulations, the Kubelka-Munk theory etc.) and approved techniques (photodynamic therapy, laser-induced interstitial thermotherapy etc.). A section on applications reviews clinically relevant methods in modern medicine using the latest references.
Download or read book Laser Tissue Interactions written by Markolf Niemz and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser--Tissue Interactions provides a thorough description of the fundamentals and applications in this field. Basic conceptions such as optical and thermal properties of tissue, various types of tissue ablation, and optical breakdown with related effects are treated in detail. Special attention is given to mathematical tools (Monte Carlo simulations, Kubelka--Munk theory) and approved techniques (photodynamic therapy, laser-induced interstitial thermotherapy). The part on applications reviews clinically relevant methods in modern medicine according to the latest references. The last chapter includes today's standards of laser safety, with a careful selection of essential guidelines published
Download or read book Laser Interaction with Biological Material written by Kirill Kulikov and published by Springer. This book was released on 2016-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the principles of laser interaction with biological cells and tissues of varying degrees of organization. The problems of biomedical diagnostics are considered. Scattering of laser irradiation of blood cells is modeled for biological structures (dermis, epidermis, vascular plexus). An analytic theory is provided which is based on solving the wave equation for the electromagnetic field. It allows the accurate analysis of interference effects arising from the partial superposition of scattered waves. Treated topics of mathematical modeling are: optical characterization of biological tissue with large-scale and small-scale inhomogeneities in the layers, heating blood vessel under laser irradiation incident on the outer surface of the skin and thermo-chemical denaturation of biological structures at the example of human skin.
Download or read book Laser induced Damage in Biological Tissue written by Elharith M. Ahmed and published by . This book was released on 2013 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its invention in the early 1960's, the laser has been used as a tool for surgical, therapeutic, and diagnostic purposes. To achieve maximum effectiveness with the greatest margin of safety it is important to understand the mechanisms of light propagation through tissue and how that light affects living cells. Lasers with novel output characteristics for medical and military applications are too often implemented prior to proper evaluation with respect to tissue optical properties and human safety. Therefore, advances in computational models that describe light propagation and the cellular responses to laser exposure, without the use of animal models, are of considerable interest. Here, a physics-based laser-tissue interaction model was developed to predict the spatial and temporal temperature and pressure rise during laser exposure to biological tissues. Our new model also takes into account the dynamic nature of tissue optical properties and their impact on the induced temperature and pressure profiles. The laser-induced retinal damage is attributed to the formation of microbubbles formed around melanosomes in the retinal pigment epithelium (RPE) and the damage mechanism is assumed to be photo-thermal. Selective absorption by melanin creates these bubbles that expand and collapse around melanosomes, destroying cell membranes and killing cells. The Finite Element (FE) approach taken provides suitable ground for modeling localized pigment absorption which leads to a non-uniform temperature distribution within pigmented cells following laser pulse exposure. These hot-spots are sources for localized thermo-elastic stresses which lead to rapid localized expansions that manifest themselves as microbubbles and lead to microcavitations. Model predictions for the interaction of lasers at wavelengths of 193, 694, 532, 590, 1314, 1540, 2000, and 2940 nm with biological tissues were generated and comparisons were made with available experimental data for the retina, cornea or the skin. Good agreement between model and experimental results established the validity of the model.
Download or read book Optical Thermal Response of Laser Irradiated Tissue written by Ashley J. Welch and published by Springer Science & Business Media. This book was released on 2011-01-15 with total page 951 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition maintains the standard of excellence established in the first edition, while adjusting the content to reflect changes in tissue optics and medical applications since 1995. The material concerning light propagation now contains new chapters devoted to electromagnetic theory for coherent light. The material concerning thermal laser-tissue interactions contains a new chapter on pulse ablation of tissue. The medical applications section now includes several new chapters on Optical Coherent Tomography, acoustic imaging, molecular imaging, forensic optics and nerve stimulation. A detailed overview is provided of the optical and thermal response of tissue to laser irradiation along with diagnostic and therapeutic examples including fiber optics. Sufficient theory is included in the book so that it is suitable for a one or two semester graduate or for senior elective courses. Material covered includes (1) light propagation and diagnostic application; (2) the thermal response of tissue and therapeutic application; (3) denaturation; and (4) ablation. The theory and applications provide researchers with sufficient detail that this volume will become the primary reference for laser-tissue interactions and medical applications.
Download or read book Proceedings of Laser tissue Interaction written by and published by . This book was released on 1998 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Interaction with Tissue and Cells written by and published by . This book was released on 2004 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser tissue Interaction written by and published by . This book was released on 2003 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of Laser Interaction with Hard and Soft Tissue written by and published by . This book was released on 1993 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of Laser tissue Interaction and Tissue Optics II written by Hans Jörg Albrecht and published by SPIE-International Society for Optical Engineering. This book was released on 1996 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of Laser tissue Interaction Tissue Optics and Laser Welding written by and published by . This book was released on 1997 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Response of Laser Irradiated Tissue written by Ashley J. Welch and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this text, scientists provide a detailed description of the physical events that occur when light interacts with tissue. Their work emphasizes the optical response of tissue during treatment procedures or diagnostic applications of laser light. Supported by numerous illustrations, chapters present methods for estimating tissue optical properties from measurements of reflection and transmission in addition to methods for measuring temperature, thermal properties and rate constants. A discussion on the applications of optical and thermal tissue interactions to various medical problems is included.
Download or read book Proceedings of Laser tissue Interaction Tissue Optics and Laser Welding III written by Società italiana di laser chirurgia e medicina and published by SPIE-International Society for Optical Engineering. This book was released on 1998 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of Laser tissue Interaction V written by Steven L. Jacques and published by . This book was released on 1994 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Applications in Medicine and Biology written by Myron Wolbarsht and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of the material in this book represents a departure from that presented earlier in the series. Volumes 1 and 2 presented almost exclusively reviews by American authors of American work. As science is international, it is rare that in two different parts of the world large groups of researchers in the same field remain relatively uninformed about each other's work. However, during the time since the initiation of this series, a large body of research has grown up in Russia that is almost unknown outside, as the original reports are largely untranslated. For this reason, an extensive review is presented here of the entire field of Russian applications of lasers in medicine and biology. Although the author, Dr. Gamaleya, has not worked directly with many of the applications, he has a general background in laser usage and has received much help from his colleagues in assembling the material. His review is restricted to Russian research. This does not mean that he is unaware of Western advances, rather that he has restricted his material to the parts that are peculiarly Russian or are significant confir mations of earlier work. Some of the Russian developments are quite novel and will certainly suggest to the careful reader new interpretations of old data, and possibly even new lines of research. The mechanisms proposed for the interaction of the high-intensity monochromatic light from lasers with biological material continue to grow in complexity.
Download or read book Laser Applications in Medicine and Biology written by Myron Wolbarsht and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: If a basic advance in physics has any practical applications, among the first are those in biology and medicine. This is quite striking when one considers even such unlikely things as the Mössbauer effect and X rays. Within a very short period of their discovery, they had welI-formulated biological and medical applications. The discovery of the laser is no exception. AIthough the theoretical basis for it was established in 1917 by Einstein, the techniques and materials necessary for building a laser were not then available. The laser has revitalized everything connected with optics. It has furnished the experimenter and the teacher with a pseudo-point source. It has translated many a theoretical experiment into one that can be realized practicalIy. The highly monochromatic and coherent aspects of the light, in addition to the high power levels that can be attained, add greatly to the usefulness in this regard. The industrial applictions range from punching holes in baby bottle nipples to a surveyor's instrument of such accuracy that it can plot tlie position of the moon relative to the earth within a few feet. Many years of very informal meeting on the subject of lasers in medicine and biology have been sponsored by the Gordon Research Conferences. The present book is an outgrowth of the discussions that took place at these meetings, aIthough it is in no sense a symposium report.
