Download or read book Optical Methods and Instrumentation in Brain Imaging and Therapy written by Steen J. Madsen and published by Springer Science & Business Media. This book was released on 2012-11-13 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive up-to-date review of optical approaches used in brain imaging and therapy. It covers a variety of imaging approaches including diffuse optical imaging, laser speckle imaging, photoacoustic imaging and optical coherence tomography. A number of laser-based therapeutic techniques are reviewed, including photodynamic therapy, fluorescence guided resection and photothermal therapy. Fundamental principles and instrumentation are discussed for each imaging and therapeutic approach.
Download or read book Imaging the Brain with Optical Methods written by Anna W. Roe and published by Springer Science & Business Media. This book was released on 2009-11-11 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monitoring brain function with light in vivo has become a reality. The technology 33 of detecting and interpreting patterns of reflected light has reached a degree of 34 maturity that now permits high spatial and temporal resolution visualization at both 35 the systems and cellular levels. There now exist several optical imaging methodolo- 36 gies, based on either hemodynamic changes in nervous tissue or neurally induced 37 light scattering changes, that can be used to measure ongoing activity in the brain. 38 These include the techniques of intrinsic signal optical imaging, near-infrared optical 39 imaging, fast optical imaging based on scattered light, optical imaging with voltage 40 sensitive dyes, and two-photon imaging of hemodynamic signals. The purpose of 41 this volume is to capture some of the latest applications of these methodologies to 42 the study of cerebral cortical function. 43 This volume begins with an overview and history of optical imaging and its use 44 in the study of brain function. Several chapters are devoted to the method of intrin- 45 sic signal optical imaging, a method used to record the minute changes in optical 46 absorption due to hemodynamic changes that accompanies cortical activity. Since the 47 detected hemodynamic changes are highly localized, this method has excellent 48 spatial resolution (50–100 μm ), a resolution sufficient for visualization of fundamen- 49 tal modules of cerebral cortical function.
Download or read book Advanced Optical Methods for Brain Imaging written by Fu-Jen Kao and published by Springer. This book was released on 2018-05-14 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the rapidly developing field of advanced optical methods for structural and functional brain imaging. As is known, the brain is the most poorly understood organ of a living body. It is indeed the most complex structure in the known universe and, thus, mapping of the brain has become one of the most exciting frontlines of contemporary research. Starting from the fundamentals of the brain, neurons and synapses, this book presents a streamlined and focused coverage of the core principles, theoretical and experimental approaches, and state-of-the-art applications of most of the currently used imaging methods in brain research. It presents contributions from international leaders on different photonics-based brain imaging modalities and techniques. Included are comprehensive descriptions of many of the technology driven spectacular advances made over the past few years that have allowed novel insights of the structural and functional details of neurons. The book is targeted at researchers, engineers and scientists who are working in the field of brain imaging, neuroscience and connectomics. Although this book is not intended to serve as a textbook, it will appeal to undergraduate students engaged in the specialization of brain imaging.
Download or read book Neurophotonics and Brain Mapping written by Yu Chen and published by CRC Press. This book was released on 2017-06-14 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding how the brain works and developing effective therapeutics are important in advancing neuroscience and improving clinical patient care. Neurophotonics and Brain Mapping covers state-of-the-art research and development in optical technologies and applications for brain mapping and therapeutics. It provides a comprehensive overview of various methods developed using light, both microscopic and macroscopic techniques. Recent developments in minimally-invasive endoscopic imaging of deep brain structure and function, as well as light-based therapy are also reviewed.
Download or read book Miniaturized Label Free Optical Systems for Imaging Brain Hemodynamics written by Iliya Sigal and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation focuses on instrumentation development for optical monitoring of hemodynamics in rodent brains, which would allow neurophysiologists, conducting pre-clinical research on brain diseases and disorders, to better understand disease onset and progression, and evaluate treatment options. Three specific challenges in applying optical tools to brain imaging were addressed: (1) the limited robustness of optical imaging in the presence of misfocus, (2) the low sensitivity in imaging brain activity under anaesthesia in chronic, longitudinal studies, and (3) the limited penetration depth of optical microscopy in tissue. Two methods were proposed to address misfocus-related imaging artefacts, which enable quantitative optical measurements of blood flow to take place across large fields of view and over long imaging time-frames. A system for blood flow monitoring with extended depth of field was developed, showing improved ability to accurately image flow speeds over large areas in the brain. In addition, a novel measure for misfocus was proposed, enabling robust autofocusing in the presence of measurement noise. A miniaturized, skull-mounted multi-modal optical imaging system was designed for imaging brain blood flow and oxygenation changes in freely-behaving animals. This device constituted the first demonstration of wide-field optical imaging of brain blood flow and oxygenation in a chronic setting, suitable for longitudinal studies of brain disease progression and investigating treatment efficacy. Lastly, a novel endoscopy method was proposed to measure flow speeds of scattering fluids through a single, multi-mode optical fiber. This endoscopy method could enable imaging blood flow speeds in deep brain structures using a minimally-invasive probe that is over 2x smaller than conventional micro-endoscopes used today. Combined, the accomplishments described in this dissertation contributed to making optical measurements of brain hemodynamics applicable to a wider range of imaging assays, and to making optical imaging a more accessible tool for the study of brain vasculature.
Download or read book Optical Imaging of Brain Function and Metabolism 2 written by Arno Villringer and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers the latest developments in optical imaging of the brain which is becoming an increasingly important functional neuroimaging method. Optical intrinsic signals offer unrivaled temporal and spatial resolution of functional measurements of the exposed brain cortex in animals and humans. Near-infrared spectroscopy and imaging ap proaches permit the noninvasive functional assessment of the human brain at bedside. Main advantages of these optical techniques are the biochemical specificity of the meas urements and the potential of measuring correlates of intracellular and intravascular oxy genation simultaneously. Recent data indicate that one may also measure a more direct correlate of neuronal activity associated with changes in light scattering. In this volume, recent technical progress of the optical method is covered as well as the physiological basis of the measurements. In simultaneous studies, near-infrared spec troscopy measurements are directly compared to other functional methods, especially PET and fMRI and examples are given for new applications of the NIRS-method. Based on re sults obtained with optical methods and other functional techniques the latest in our under standing of the coupling of neuronal activity and cerebral blood flow response is reviewed. This is an important basis for a better understanding of all functional neuroi maging methods which rely on neurovascular coupling such as PET, SPET and fMRI. Fi nally the optical method is put into the perspective of presently available functional neuroimaging methods including fMRI, PET, MEG and EEG.
Download or read book Handbook of Neurophotonics written by Francesco S. Pavone and published by CRC Press. This book was released on 2020-05-10 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Neurophotonics provides a dedicated overview of neurophotonics, covering the use of advanced optical technologies to record, stimulate, and control the activity of the brain, yielding new insight and advantages over conventional tools due to the adaptability and non-invasive nature of light. Including 32 colour figures, this book addresses functional studies of neurovascular signaling, metabolism, electrical excitation, and hemodynamics, as well as clinical applications for imaging and manipulating brain structure and function. The unifying theme throughout is not only to highlight the technology, but to show how these novel methods are becoming critical to breakthroughs that will lead to advances in our ability to manage and treat human diseases of the brain. Key Features: Provides the first dedicated book on state-of-the-art optical techniques for sensing and imaging across at the cellular, molecular, network, and whole brain levels. Highlights how the methods are used for measurement, control, and tracking of molecular events in live neuronal cells, both in basic research and clinical practice. Covers the entire spectrum of approaches, from optogenetics to functional methods, photostimulation, optical dissection, multiscale imaging, microscopy, and structural imaging. Includes chapters that show use of voltage-sensitive dye imaging, hemodynamic imaging, multiphoton imaging, temporal multiplexing, multiplane microscopy, optoacoustic imaging, near-infrared spectroscopy, and miniature neuroimaging devices to track cortical brain activity.
Download or read book Advances in Brain Imaging Techniques written by Nirmal Mazumder and published by Springer Nature. This book was released on 2022-05-19 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book reviews the recent developments in brain imaging and their technological advancements to understand molecular mechanisms associated with neurological disorders and basic behaviors in humans and rodents at the structural, molecular, and functional levels. It discusses the usefulness of advanced optical microscopy techniques, including optical coherence tomography (OCT), miniscope, multiphoton fluorescence (2PF & 3PF), adaptive optics, harmonic generation, and Raman microscopy for understanding pathomechanism of brain disorders and pathological and physiological changes associated with neurodegenerative diseases. Also, the book presents conventional imaging modalities, including Magnetic Resonance Imaging (MRI), for delineating underlying mechanisms and precise early diagnosis of neurological disorders. This book is a useful resource for neuroscientists and researchers working in biomedical engineering and optics.
Download or read book Optical Imaging of Brain Function and Metabolism written by Ulrich Dirnagl and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: • . . . . At last the doctor will be freed from the tedious interpretation of screens and photographs. Instead, he will examine and scan through his patient directly. Wearing optical-shutter spectacles and aiming a pulsed laser torch, he will be able to peer at the beating heart, study the movement of a joint or the flexing of a muscle, press on suspect areas to see how the organs beneath respond, check that pills have been correctly swallowed or that an implant is savely in place, and so on. A patient wearing white cotton or nylon clothes that scatter but hardly absorb light, may not even have to undress . . . . •. David Jones, Nature (1990) 348:290 Optical imaging of the brain is a rapidly growing field of heterogenous techniques that has attracted considerable interest recently due to a number of theoretical advantages in comparison with other brain imaging modalities: it uses non ionizing radiation, offers high spatial and temporal resolution, and supplies new types of metabolic and functional information. From a practical standpoint it is important that bedside examinations seem feasible and that the implementations will be considerably less expensive compared with competing techniques. In October 1991, a symposium was held at the Eibsee near Garmisch, Germany to bring together the leading scientists in this new field.
Download or read book In Vivo Optical Imaging of Brain Function written by Ron D. Frostig and published by CRC Press. This book was released on 2009-05-06 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: These are exciting times for the field of optical imaging of brain function. Rapid developments in theory and technology continue to considerably advance understanding of brain function. Reflecting changes in the field during the past five years, the second edition of In Vivo Optical Imaging of Brain Function describes state-of-the-art techniques a
Download or read book Neurophotonics and Biomedical Spectroscopy written by Robert R. Alfano and published by William Andrew. This book was released on 2018-11-22 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neurophotonics and Biomedical Spectroscopy addresses the novel state-of-the-art work in non-invasive optical spectroscopic methods that detect the onset and progression of diseases and other conditions, including pre-malignancy, cancer, Alzheimer's disease, tissue and cell response to therapeutic intervention, unintended injury and laser energy deposition. The book then highlights research in neurophotonics that investigates single and multi-photon excitation optical signatures of normal/diseased nerve tissues and in the brain, providing a better understanding of the underlying biochemical and structural changes of tissues and cells that are responsible for the observed spectroscopic signatures. Topics cover a wide array of well-established UV, visible, NIR and IR optical and spectroscopic techniques and novel approaches to diagnose tissue changes, including: label free in vivo and ex vivo fluorescence spectroscopy, Stoke shift spectroscopy, spectral imaging, Resonance Raman spectroscopy, multiphoton two Photon excitation, and more. - Provides an overview of the spectroscopic properties of tissue and tissue-light interaction, describing techniques to exploit these properties in imaging - Explores the potential and significance of molecule-specific imaging and its capacity to reveal vital new information on nanoscale structures - Offers a concise overview of different spectroscopic methods and their potential benefits for solving diagnostic and therapeutic problems
Download or read book Dynamic Brain Imaging written by Hyder Fahmeed and published by Humana Press. This book was released on 2014-11-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: If a picture is worth a thousand words, then dynamic images of brain activity certainly warrant many, many more. This book will help users learn to decipher the dynamic imaging data that will be critical to our future understanding of complex brain functions. In recent years, there have been unprecedented methodological advancements in the imaging of brain activity. These techniques allow the measurement of everything from neural activity (e.g., membrane potential, ion ?ux, neurotransmitter ?ux) to energy metabolism (e.g., glucose consumption, oxygen consumption, creatine kinase ?ux) and functional hyperemia (e.g., blood ?ow, volume, oxygenation). This book deals with a variety of magnetic resonance, electrophysiology, and optical methods that are often used to measure some of these dynamic processes. All chapters were written by leading experts, spanning three continents, specializing in state-of-the-art methods. Brie?y, the book has ?ve sections. In the introductory section, there are two chapters; the ?rst one contains a brief pre- ble to dynamic brain imaging and the other presents a novel, analytical approach to processing of dynamically acquired data. The second section has four chapters and delves into a wide range of optical imaging methods. I am privileged to include a chapter from Lawrence B. Cohen, considered by many to be the authority on optical imaging and spectroscopy, both in vitro and in vivo [Cohen LB (1973) Physiol Rev.
Download or read book Optical Methods for Tumor Treatment and Detection written by Thomas John Dougherty and published by Society of Photo Optical. This book was released on 2002 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neurophotonics and Brain Mapping written by Yu Chen and published by CRC Press. This book was released on 2017-06-14 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding how the brain works and developing effective therapeutics are important in advancing neuroscience and improving clinical patient care. Neurophotonics and Brain Mapping covers state-of-the-art research and development in optical technologies and applications for brain mapping and therapeutics. It provides a comprehensive overview of various methods developed using light, both microscopic and macroscopic techniques. Recent developments in minimally-invasive endoscopic imaging of deep brain structure and function, as well as light-based therapy are also reviewed.
Download or read book Advanced Imaging Methods in Neuroscience written by João O. Malva and published by Frontiers Media SA. This book was released on 2022-01-11 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optics and Ultrasound in Biomedicine Sensing Imaging and Therapy written by Chao Tian and published by Frontiers Media SA. This book was released on 2021-07-22 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Methods for Tumor Treatment and Detection written by Society of Photo-optical Instrumentation Engineers and published by SPIE-International Society for Optical Engineering. This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Signaling Pathways; Localization; New Sensitizers; ALA; Clinical PDT; Dosimetry; Vascular Responses; Imaging.
