Download or read book Diffuse Optical Spectroscopy and Imaging VII written by Hamid Dehghani and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diffuse Optical Spectroscopy and Imaging VII written by Hamid Dehghani and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diffuse Optical Spectroscopy and Imaging VII written by Vasilis Ntziachristos and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Horizons in Time Domain Diffuse Optical Spectroscopy and Imaging written by Yoko Hoshi and published by MDPI. This book was released on 2020-06-23 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jöbsis was the first to describe the in vivo application of near-infrared spectroscopy (NIRS), also called diffuse optical spectroscopy (DOS). NIRS was originally designed for the clinical monitoring of tissue oxygenation, and today it has also become a useful tool for neuroimaging studies (functional near-infrared spectroscopy, fNIRS). However, difficulties in the selective and quantitative measurements of tissue hemoglobin (Hb), which have been central in the NIRS field for over 40 years, remain to be solved. To overcome these problems, time-domain (TD) and frequency-domain (FD) measurements have been tried. Presently, a wide range of NIRS instruments are available, including commonly available commercial instruments for continuous wave (CW) measurements, based on the modified Beer–Lambert law (steady-state domain measurements). Among these measurements, the TD measurement is the most promising approach, although compared with CW and FD measurements, TD measurements are less common, due to the need for large and expensive instruments with poor temporal resolution and limited dynamic range. However, thanks to technological developments, TD measurements are increasingly being used in research, and also in various clinical settings. This Special Issue highlights issues at the cutting edge of TD DOS and diffuse optical tomography (DOT). It covers all aspects related to TD measurements, including advances in hardware, methodology, the theory of light propagation, and clinical applications.

Download or read book Diffuse Optical Spectroscopy and Imaging VIII written by Davide Contini and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Horizons in Time Domain Diffuse Optical Spectroscopy and Imaging written by Yoko Hoshi and published by . This book was released on 2020 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jöbsis was the first to describe the in vivo application of near-infrared spectroscopy (NIRS), also called diffuse optical spectroscopy (DOS). NIRS was originally designed for the clinical monitoring of tissue oxygenation, and today it has also become a useful tool for neuroimaging studies (functional near-infrared spectroscopy, fNIRS). However, difficulties in the selective and quantitative measurements of tissue hemoglobin (Hb), which have been central in the NIRS field for over 40 years, remain to be solved. To overcome these problems, time-domain (TD) and frequency-domain (FD) measurements have been tried. Presently, a wide range of NIRS instruments are available, including commonly available commercial instruments for continuous wave (CW) measurements, based on the modified Beer-Lambert law (steady-state domain measurements). Among these measurements, the TD measurement is the most promising approach, although compared with CW and FD measurements, TD measurements are less common, due to the need for large and expensive instruments with poor temporal resolution and limited dynamic range. However, thanks to technological developments, TD measurements are increasingly being used in research, and also in various clinical settings. This Special Issue highlights issues at the cutting edge of TD DOS and diffuse optical tomography (DOT). It covers all aspects related to TD measurements, including advances in hardware, methodology, the theory of light propagation, and clinical applications.

Download or read book Diffuse Optical Spectroscopy and Imaging of Turbid Media written by Can T. Xu and published by . This book was released on 2013 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Detection of Cancer written by Arlen D. Meyers and published by World Scientific. This book was released on 2012 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ch. 1. The optical detection of cancer: an introduction / Toby Steele and Arlen Meyers -- ch. 2. Optical coherence tomography in oral cancer / Shahareh Sabet and Petra Wilder-Smith -- ch. 3. Optical coherence tomography in laryngeal cancer / Marcel Kraft and Christoph Arens -- ch. 4. Fluorescence imaging of the upper aerodigestive tract / Christian Stephan Betz, Andreas Leunig and Christoph Arens -- ch. 5. Photodynamic diagnosis and photodynamic therapy techniques / Zheng Huang -- ch. 6. OCT detection of lung cancer / S. Murgu and M. Brenner -- ch. 7. Diffuse optical spectroscopy and imaging in breast cancer / Albert E. Cerussi and Bruce J. Tromberg -- ch. 8. OCT for skin cancer / Gordon McKenzie and Adam Meekings

Download or read book Combination of Broadband Diffuse Optical Spectroscopy with Magnetic Resonance Imaging written by Sean Isaiah Merritt and published by . This book was released on 2005 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contrast Enhancement for Diffuse Optical Spectroscopy and Imaging written by Yu Chen and published by . This book was released on 2003 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Tomography and Spectroscopy of Tissue VII written by Britton Chance and published by SPIE-International Society for Optical Engineering. This book was released on 2007 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory/Algorithm/Modeling; Instrumentation and Technology I; Fluorescence Imaging/Spectroscopy (algorithm/model/tomography); Fluorescence Imaging/Image Reconstruction (Experimental); Instrumentation and Technology II; Fluorescence Imaging Technology I; Fluorescence Imaging Technology II; Fluorescence Imaging Technology III; Network for Translational Research in Optical Imaging: Breast Cancer Diffuse Optical Imaging; Breast II - Instrumentation & New Analysis Method; Breast III - Clinical Study; Pre-Clinical/Animal; Instrumentation and Technology III; Clinical/Human Subject Studies.

Download or read book Three Dimensional Diffuse Optical Spectroscopic Imaging in Reflectance Geometry written by Jing Liu and published by . This book was released on 2010 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diffusive near infrared (NIR) photons report on subsurface biological tissue structure and function. Diffuse optical techniques, such as diffuse optical imaging (DOI) and diffuse optical spectroscopy (DOS), adopt model-based approaches to quantitatively extract spatial and spectral information content from centimeter thick tissues. In diffuse optical techniques, NIR photons that have diffusively probed the tissue are collected on tissue boundaries. The current DOS technique developed in the Tromberg research group focuses on characterizing tissue heterogeneities (i.e., tumors) by using a large spectral bandwidth (i.e., ~ thousand NIR wavelengths ranging from 650 to 1000 nm). This high spectral density of broadband DOS allows the recovery of important NIR-absorbing molecule concentrations and states, as well as identification of spectral signatures unique to tissue heterogeneities. The current DOS instrument employs a single spatial view (i.e., one source and detector pair) in a reflectance geometry. DOS suffers from poor accuracy in recovering the spatial location and the optical properties of heterogeneities because of the single spatial view and the application of a simple homogeneous model. In this work, I am devoted to developing new imaging approaches that will improve the spatial capabilities of DOS while keeping its rich broadband spectral bandwidth and reflectance configuration. Reflectance imaging is also challenging because the field of view is less than the conventional ring geometries in tomography and parallel plate geometries used in transmittance imaging. I will first describe how the spatial extent of subsurface structure is assessed with current DOS technology independent of any image reconstruction. This spatial information serves as a physiologically relevant spatial constraint, known as a spatial a priori, for subsequent image reconstruction algorithms. Next I will describe a novel imaging approach that takes advantage of this spatial information is introduced. It has the potential of being used for fast and reliable recovery of optical properties in clinical settings. Lastly, in addition to the use of spatial a priori in the reconstruction algorithm, a reflectance measurement scheme with extra source-detector pairs and more tissue spatial views is proposed and developed. With spatial information obtained through spatial a priori or additional spatial measurements, the new imaging method is capable of accurately extracting both spatial and spectral content, even in a reflectance measurement geometry.

Download or read book Optical Spectroscopy And Imaging For Cancer Diagnostics Fundamentals Progress And Challenges written by Noureddine Melikechi and published by World Scientific. This book was released on 2023-01-06 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an interdisciplinary book that presents the applications of novel laser spectroscopy and imaging techniques for the detection of cancers recently developed by some of the world's most renown researchers. The book consists of three parts and a total of 16 chapters. Each chapter is written by leading experts who are actively seeking to develop novel spectroscopic and analytical methods for cancer detection and diagnosis.In Part I, the authors present fundamentals on optics, atoms and molecules, biophysics, cancer and machine learning. These chapters are intended for those who are not experts in the field but wish to learn about fundamentals' aspects of some of the key topics that are addressed in this book. Particular attention has been given to providing key references for those who wish to go further into the fundamental aspects of atoms and molecules, light-matter interaction, optical instrumentation, machine learning and cancer.In Part II, the authors present key applications of various laser spectroscopic methods in cancer diagnosis. They have provided recent progress in cancer diagnostics obtained by combining laser spectroscopy and machine learning for the analysis of the spectra acquired from biomedical tissues and biofluids.In Part III, the authors present chapters that discuss key developments in the applications of various laser imaging techniques for cancer detection.This is one of the few books that addresses cancer detection and diagnosis using laser spectroscopic and imaging tools with an eye on providing the reader the scientific tools, including machine learning ones.

Download or read book Single Molecule Optical Detection Imaging and Spectroscopy written by W. E. Moerner and published by John Wiley & Sons. This book was released on 2008-09-26 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Single Molecule Spectroscopy is one of the hottest topics in today's chemistry. It brings us close to the the most exciting vision generations of chemists have been dreaming of: To observe and examine single molecules! While most of chemistry deals with myriads of molecules, this books presents the latest developments for the detection and investigation of single entities. Written by internationally renowned authors, it is a thorough and comprehensive survey of current methods and their applications.

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 Computational Optical Biomedical Spectroscopy and Imaging written by Sarhan M. Musa and published by CRC Press. This book was released on 2015-01-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Optical Biomedical Spectroscopy and Imaging covers recent discoveries and research in the field by some of the best inventors and researchers in the world. It also presents useful computational methods and applications used in optical biomedical spectroscopy and imaging. Topics covered include: New trends in immunohistochemical, genome, and metabolomics imaging Computer-aided diagnosis of interstitial lung diseases based on CT image analysis Functional near-infrared spectroscopy and its applications in neurosciences Applications of vibrational spectroscopic imaging in personal care studies Induced optical natural fluorescence spectroscopy for Giardia lamblia cysts Nanoimaging and polarimetric exploratory data analysis Fluorescence bioimaging with applications to chemistry Medical imaging instrumentation and techniques The book also discusses future applications, directions, opportunities, and challenges of optical biomedical spectroscopy and imaging in technical industry, academia, and government. This valuable resource introduces key concepts of computational methods used in optical biomedical spectroscopy and imaging in a manner that is easily understandable to beginners and experts alike.

Download or read book Time domain Diffuse Correlation Spectroscopy Instrument Prototype Preliminary Measurements and Theoretical Modeling written by Danil Tyulmankov and published by . This book was released on 2017 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Near-infrared spectroscopy (NIRS) is an emerging diffuse optical imaging tool with both clinical and academic applications such as functional brain imaging, breast cancer detection, and cerebral health monitoring. Due to its non-invasiveness, high spatial and temporal resolution, and portability, it has been rapidly growing in popularity over the last 40 years. The technique relies on near-infrared light to measure optical properties { scattering and absorption { which can then be used to infer details of the underlying tissue physiology. Diffuse correlation spectroscopy (DCS) is a complimentary optical technique that relies on long-coherence laser light, also in the near-infrared range, to measure dynamical properties of a medium { in the biomedical context, blood ow. While NIRS and DCS can be used in conjunction to provide even more powerful information, they require separate instrumentation, resulting in reduced portability and difficulty in bedside monitoring. In brain imaging applications, both NIRS and DCS suer from confounds due to layers surrounding the brain, such as the scalp and skull. While this issue has been addressed in NIRS using time-resolved instrumentation known as time-domain (TD) NIRS, it has been largely ignored in the context of DCS. In this work, we demonstrate a novel time-domain diffuse correlation spectroscopy (TD-DCS) technique embodied in a single instrument capable of simultaneously measuring optical and dynamical properties. Along with maintaining portability, the instrument reduces error by directly measuring the absorption and scattering values necessary for precise ow estimation, and removes a major confounding factor by suppressing unwanted signal from superficial layers through time-gating. We describe the construction of the first instrument prototype and demonstrate the depth resolution proof-of-concept with measurements of multi-layer media. We further discuss the theoretical considerations of modeling the light interaction with tissue, necessary for reliable estimates.