Download or read book Studies in Skin Perfusion Dynamics written by Vladimir Blazek and published by Springer Nature. This book was released on 2021-01-20 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book talks about photoplethysmography (PPG) techniques based on computer-aided data processing. In particular, it presents the results of a co-operative Indo-German project on the topic between Indian Institute of Technology at Chennai and RWTH Aachen University. Measuring system design, experimental details and some preliminary results obtained so far within the framework of this project are presented here. From the investigations carried out so far using the PPG sensors in conjunction with breathing sensors, it has been possible to monitor the 0.125 to 0.15 Hz rhythms in the arterial volumetric changes and to study the influence of breathing on them. These rhythms, which according to medical experts have relevance to psychosomatic conditions e.g. stress or relaxation, can also be addressed to by ancient Indian practices like yoga and meditation. This book presents the results of studying the effects of Indian relaxation techniques like pranayama, meditation, etc. in comparison to western relaxation techniques like autogenic training. So far it has been established that the Indian techniques of relaxation like yoga and meditation are very effective in generating low frequency rhythms in the skin perfusion as monitored by optical sensors. According to medical experts, these low frequency rhythms have a very important bearing on the human physiology and have potential therapeutic implications. This book is meant to provide an overview of the current state-of-knowledge and encourage the next generation of scientists/engineers to carry this work forward, especially on the novel PPG application fields that are of growing importance like pain and stress assessment, detection of peripheral venous saturation and local arterio-venous oxygen consumption as well as contactless space resolved skin perfusion studies with modern camera based PPG technology.
Download or read book Studies in Skin Perfusion Dynamics written by Vladimir Blazek and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book talks about photoplethysmography (PPG) techniques based on computer-aided data processing. In particular, it presents the results of a co-operative Indo-German project on the topic between Indian Institute of Technology at Chennai and RWTH Aachen University. Measuring system design, experimental details and some preliminary results obtained so far within the framework of this project are presented here. From the investigations carried out so far using the PPG sensors in conjunction with breathing sensors, it has been possible to monitor the 0.125 to 0.15 Hz rhythms in the arterial volumetric changes and to study the influence of breathing on them. These rhythms, which according to medical experts have relevance to psychosomatic conditions e.g. stress or relaxation, can also be addressed to by ancient Indian practices like yoga and meditation. This book presents the results of studying the effects of Indian relaxation techniques like pranayama, meditation, etc. in comparison to western relaxation techniques like autogenic training. So far it has been established that the Indian techniques of relaxation like yoga and meditation are very effective in generating low frequency rhythms in the skin perfusion as monitored by optical sensors. According to medical experts, these low frequency rhythms have a very important bearing on the human physiology and have potential therapeutic implications. This book is meant to provide an overview of the current state-of-knowledge and encourage the next generation of scientists/engineers to carry this work forward, especially on the novel PPG application fields that are of growing importance like pain and stress assessment, detection of peripheral venous saturation and local arterio-venous oxygen consumption as well as contactless space resolved skin perfusion studies with modern camera based PPG technology.
Download or read book Electromagnetic and Acoustic Waves in Bioengineering Applications written by Ivo Čáp and published by BoD – Books on Demand. This book was released on 2021-12-24 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with the analysis of oscillations, mechanical and electromagnetic waves, and their use in medicine. Each chapter contains the theoretical basis and the use of relevant phenomena in medical practice. Description of oscillations is important for understanding waves and the nature of magnetic resonance. A chapter on mechanical waves describes the origin and properties of sound, infrasound and ultrasound, their medical applications, and perception of sound by human hearing. A chapter on electromagnetic waves examines their origin, properties, and applications in therapy and diagnostics. Subsequent chapters describe how interference and diffraction lead to applications like optical imaging, holography, virtual reality, and perception of light by human vision. Also addressed is how quantum properties of radiation helped develop the laser scalpel, fluorescence microscopy, spectroscopy, X-rays, and gamma radiation.
Download or read book Signal Processing Driven Machine Learning Techniques for Cardiovascular Data Processing written by Rajesh Kumar Tripathy and published by Elsevier. This book was released on 2024-06-17 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Signal Processing Driven Machine Learning Techniques for Cardiovascular Data Processing features recent advances in machine learning coupled with new signal processing-based methods for cardiovascular data analysis. Topics in this book include machine learning methods such as supervised learning, unsupervised learning, semi-supervised learning, and meta-learning combined with different signal processing techniques such as multivariate data analysis, time-frequency analysis, multiscale analysis, and feature extraction techniques for the detection of cardiovascular diseases, heart valve disorders, hypertension, and activity monitoring using ECG, PPG, and PCG signals. In addition, this book also includes the applications of digital signal processing (time-frequency analysis, multiscale decomposition, feature extraction, non-linear analysis, and transform domain methods), machine learning and deep learning (convolutional neural network (CNN), recurrent neural network (RNN), transformer and attention-based models, etc.) techniques for the analysis of cardiac signals. The interpretable machine learning and deep learning models combined with signal processing for cardiovascular data analysis are also covered. Provides details regarding the application of various signal processing and machine learning-based methods for cardiovascular signal analysis Covers methodologies as well as experimental results and studies Helps readers understand the use of different cardiac signals such as ECG, PCG, and PPG for the automated detection of heart ailments and other related biomedical applications
Download or read book Multi Modality Imaging written by Mauren Abreu de Souza and published by Springer. This book was released on 2018-11-29 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents different approaches on multi-modality imaging with a focus on biomedical applications. Medical imaging can be divided into two categories: functional (related to physiological body measurements) and anatomical (structural) imaging modalities. In particular, this book covers imaging combinations coming from the usual popular modalities (such as the anatomical modalities, e.g. X-ray, CT and MRI), and it also includes some promising and new imaging modalities that are still being developed and improved (such as infrared thermography (IRT) and photoplethysmography imaging (PPGI)), implying potential approaches for innovative biomedical applications. Moreover, this book includes a variety of tools on computer vision, imaging processing, and computer graphics, which led to the generation and visualization of 3D models, making the most recent advances in this area possible. This is an ideal book for students and biomedical engineering researchers covering the biomedical imaging field.
Download or read book Quantitative Dynamic Telethermometry in Medical Diagnosis and Management written by Michael Anbar and published by CRC Press. This book was released on 1994-09-23 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes conceptually new techniques in quantitative telethermometry based on monitoring the rapid changes in skin temperature in time with a fast, computerized infrared camera. Quantitative Dynamic Telethermometry in Medical Diagnosis and Management cites many hundreds of clinical research papers that demonstrate the wide range of potential applications for this technique. It also provides a critical review of the conceptual differences between the classical static qualitative and this novel dynamic quantitative methodology. Dynamic area telethermometry is being recognized now as a major medical tool for the twenty-first century.
Download or read book Applied Physiology in Intensive Care Medicine 2 written by Michael R. Pinsky and published by Springer Science & Business Media. This book was released on 2013-05-23 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two previous editions of Applied Physiology in Intensive Care Medicine proved extremely successful, and the book has now been revised and split into two volumes to enhance ease of use. In this second volume some of the most renowned experts in the field offer detailed reviews on measurement techniques and physiological processes of crucial importance in intensive care medicine. Throughout, a key aim is to help overcome the fundamental unevenness in clinicians’ understanding of applied physiology, which can lead to suboptimal treatment decisions. Applied Physiology in Intensive Care has been written by some of the most renowned experts in the field and provides an up-to-date compendium of practical bedside knowledge essential to the effective delivery of acute care medicine. It will serve the clinician as an invaluable reference source on key issues regularly confronted in everyday practice.
Download or read book Blood Flow Dynamics in Burns written by Robin Mirdell and published by Linköping University Electronic Press. This book was released on 2019-11-25 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectives: Burns of intermediate thickness are hard to evaluate clinically. This often leads to unnecessary delays of up to 14 days before a surgical decision can be made. To counter this, several objective methods have been developed to determine the healing potential of the wound. Over the years, measurement of perfusion has proven to be the most successful method for evaluation of healing potential. Laser Doppler imaging (LDI) is currently the most used method and can determine surgical need 2 days after injury with an accuracy >90%. There are however emerging techniques like laser speckle contrast imaging (LSCI), which also measure perfusion. LSCI have several advantages over LDI and is easier to use. LSCI can also investigate aspects of the microcirculation, previously not possible with LDI. The aim of this thesis was to investigate LSCI’s ability to evaluate surgical need in burns of indeterminate partial-thickness. The first objective was to investigate the dynamics of perfusion the first 14 days after injury. The purpose was to find the optimal time-window for perfusion measurements. The next goal was to determine the accuracy of different perfusion cut-offs. In this second study, the benefit of a subsequent measurement was also investigated. After this, interobserver variation between different profession groups was studied. Both the agreement of perfusion measurements and observer assessments were evaluated. Finally, cardiac vasomotion in combination with perfusion (pulsatility) was investigated as a method to determine surgical need <48 hours after injury. Methods: Perfusion was measured in a total of 77 patients at the Department of Plastic Surgery, Hand Surgery and Burns at Linköping University Hospital, Sweden. Most of these patients were children and the most common type of burn was scalds. A laser speckle contrast imager (PeriCam PSI System, Perimed AB, Järfälla, Sweden) was used to measure perfusion. Results: In the first paper we showed a clear relation between perfusion dynamics and the healing potential of the wound. The changes in perfusion were largest the first 5 days after injury, why this time interval was selected for subsequent papers. Perfusion measurements done day 3-4 after injury could predict surgical need with a sensitivity of 100% (95% CI: 83.9-100%) and a specificity of 90.4% (95% CI: 83.8-94.9%). If two measurements were used, <24 hours and 3-4 days after injury, the accuracy was 100%. Furthermore, we found that different observers could consistently predict perfusion, while there was a large variation in their clinical assessments. This was not improved by extensive burn experience. Finally, pulsatility could be used to predict surgical need the same day as the injury occurred with a sensitivity of 100% (95% CI: 88.1-100%) and a specificity of 98.8% (95% CI: 95.7- 99.9%). Conclusions: LSCI is a promising method for evaluation of burns and provides several benefits over LDI. The surgical need of burns can be determined mere hours after injury when pulsatility is measured. However, the benefits of early scald diagnostics in children with LSCI need to be evaluated in a prospective study before the method is ready for routine clinical use.
Download or read book Research Awards Index written by and published by . This book was released on 1989 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomedical Index to PHS supported Research written by and published by . This book was released on 1989 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noninvasive Investigations In Vascular Disease written by Giovanni Vincent Belcaro and published by World Scientific. This book was released on 2000-03-23 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a brief overview of noninvasive vascular tests used to diagnose and quantify vascular problems. Also, it reports on tests concerning prevention and screening.The book is the result of the work of leading international experts in vascular investigations. It will be useful for all general practitioners, vascular technologists, and both physicians and surgeons, giving an introductory overview of the field.
Download or read book Journal of Rehabilitation Research and Development written by and published by . This book was released on 1995 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society written by IEEE Engineering in Medicine and Biology Society. Conference and published by . This book was released on 2003 with total page 1082 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microvascular Research Biology and Pathology Two Volume Set written by David Shepro and published by Elsevier. This book was released on 2005-11-03 with total page 1353 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microvasculature refers to the smallest blood vessels, arterial and venous, that nurture the tissues of each organ. Apart from transport, they also contribute to the systematic regulation of the body. In everyday terminology, the microcirculation is "where the action is." Microcirculation is directly involved in such disease states as Alzheimers, inflammation, tumor growth, diabetic retinopathy, and wound healing- plus cardiovascular fitness is directly related to the formation of new capillaries in large muscles. Microvascular Research is the first book devoted exclusively to this vital systemic component of the cardiovascular system and provides up to date mini-reviews of normal functions and clinical states. The contributing authors are senior scientists with international reputation in their given disciplines. This two-volume set is a broad, interdisciplinary work that encompasses basic research and clinical applications equally. * Broad coverage of both basic and clinical aspects of microvasculature research * Contains 167 chapters from over 300 international authors * Each chapter includes key figures and annotated references
Download or read book Clinical MR Neuroimaging written by Jonathan H. Gillard and published by Cambridge University Press. This book was released on 2010 with total page 917 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers each physiological MR methodology and their applications to all major neurological diseases.
Download or read book Comprehensive Biomedical Physics written by and published by Newnes. This book was released on 2014-07-25 with total page 4052 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Biomedical Physics, Ten Volume Set is a new reference work that provides the first point of entry to the literature for all scientists interested in biomedical physics. It is of particularly use for graduate and postgraduate students in the areas of medical biophysics. This Work is indispensable to all serious readers in this interdisciplinary area where physics is applied in medicine and biology. Written by leading scientists who have evaluated and summarized the most important methods, principles, technologies and data within the field, Comprehensive Biomedical Physics is a vital addition to the reference libraries of those working within the areas of medical imaging, radiation sources, detectors, biology, safety and therapy, physiology, and pharmacology as well as in the treatment of different clinical conditions and bioinformatics. This Work will be valuable to students working in all aspect of medical biophysics, including medical imaging and biomedical radiation science and therapy, physiology, pharmacology and treatment of clinical conditions and bioinformatics. The most comprehensive work on biomedical physics ever published Covers one of the fastest growing areas in the physical sciences, including interdisciplinary areas ranging from advanced nuclear physics and quantum mechanics through mathematics to molecular biology and medicine Contains 1800 illustrations, all in full color
Download or read book International Adv Tech Apps Bi written by K. Mabuchi and published by Taylor & Francis. This book was released on 1995-03 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 1995. Routledge is an imprint of Taylor & Francis, an informa company.
