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Author: Yinan Li
Publisher:
ISBN:
Category : Breast
Languages : en
Pages :
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Book Description
Understanding the interactions between high frequency electromagnetic waves with biological tissues, especially those in humans, are crucial in all aspects of today’s modern life where everyone is exposed to high frequency electromagnetic field, to some degree. More importantly, it can contribute to the design of electromagnetic medical imaging and therapeutic devices such as in the field of breast cancer detection and Transcranial Magnetic Stimulation (TMS). This dissertation is an attempt to provide a non-invasive and practical method for early detection of abnormalities occurred under human tissues particularly under breast tissue with the application to breast cancer detection and a novel coil design for Transcranial Magnetic Stimulation by exploring the relationship between high frequency electromagnetic field and the thermal reaction of biological tissue under the exposure of it. The presented work includes a detailed description of the relationship between the dielectric properties of biological tissue and the established electromagnetic (EM) field as well as the induced heat due to external EM field. Based on these relationships, a new design of coil has been proposed to solve one of the dilemmas encountered in TMS. Furthermore, a novel breast cancer detection technique was proposed based on traditional Thermal Imaging technique. Multi-physics simulations are used to demonstrate the validity of the operating characteristics of those techniques. A physical design of the coil and a prototype test bed for the detection technique was utilized to experimentally verify the feasibility of the method and the accuracy of the simulation results. The robustness of the detection technique was tested by using different simulation frequencies, different sizes of tumor tissue as well as different locations of the tumor. The results of this investigation indicates that the proposed methods and apparatus are feasible tools for use in the field.
Author: Yinan Li
Publisher:
ISBN:
Category : Breast
Languages : en
Pages :
Get Book Here
Book Description
Understanding the interactions between high frequency electromagnetic waves with biological tissues, especially those in humans, are crucial in all aspects of today’s modern life where everyone is exposed to high frequency electromagnetic field, to some degree. More importantly, it can contribute to the design of electromagnetic medical imaging and therapeutic devices such as in the field of breast cancer detection and Transcranial Magnetic Stimulation (TMS). This dissertation is an attempt to provide a non-invasive and practical method for early detection of abnormalities occurred under human tissues particularly under breast tissue with the application to breast cancer detection and a novel coil design for Transcranial Magnetic Stimulation by exploring the relationship between high frequency electromagnetic field and the thermal reaction of biological tissue under the exposure of it. The presented work includes a detailed description of the relationship between the dielectric properties of biological tissue and the established electromagnetic (EM) field as well as the induced heat due to external EM field. Based on these relationships, a new design of coil has been proposed to solve one of the dilemmas encountered in TMS. Furthermore, a novel breast cancer detection technique was proposed based on traditional Thermal Imaging technique. Multi-physics simulations are used to demonstrate the validity of the operating characteristics of those techniques. A physical design of the coil and a prototype test bed for the detection technique was utilized to experimentally verify the feasibility of the method and the accuracy of the simulation results. The robustness of the detection technique was tested by using different simulation frequencies, different sizes of tumor tissue as well as different locations of the tumor. The results of this investigation indicates that the proposed methods and apparatus are feasible tools for use in the field.
Author: Stanley M. Neuder
Publisher:
ISBN:
Category : Electromagnetic fields
Languages : en
Pages : 36
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Book Description
Author: A. Presman
Publisher: Springer Science & Business Media
ISBN: 1475706359
Category : Science
Languages : en
Pages : 349
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Book Description
A broad region of the electromagnetic spectrum long assumed to have no influence on living systems under natural conditions has been critically re-examinjld over the past decade. This spectral region extends from the superhigh radio frequencies, through de creasing frequencies, to and including essentially static electric and magnetic fields. The author of this monograph, A. S. Presman, has reviewed not only the extensive Russian literatur!;"l, but also al most equally comprehensively the non-Russian literature, dealing with biological influences of these fields. Treated also is literature shedding some light on possible theoretical foundations for these phenomena. A substantial, rapidly increaSing number of studies in many laboratories and countries has now clearly established bio logical influences which are independent of the theoretically pre dictable, simple thermal effects. Indeed many of the effects are produced by field strengths very close to those within the natural environment. The author has, even more importantly, set forth a novel, imaginative general hypothesis in which it is postulated that such electromagnetic fields normally serve as conveyors of information from the environment to the organism, within the organism, and among organisms. He postulates that in the course of evolution or ganisms have come to employ these fields in conjunction with the well-known sensory, nervous, and endocrine systems in effecting coordination and integration.
Author: James B. Kinn
Publisher:
ISBN:
Category : Electromagnetism
Languages : en
Pages : 580
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Book Description
Author: Jitendra Behari
Publisher: CRC Press
ISBN: 1000707083
Category : Medical
Languages : en
Pages : 262
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Book Description
Focussing on engineering aspects of RF/Microwave interaction with biological tissues This book discusses the advancement in bio-electromagnetics pertaining to this important issue of electromagentic field-bio interaction vis-a-vis the emission of electromagnetic radiations from mobile phones and their biological fallout. Divided into six chapters, it discusses basic issues in Electromagnetic Field-Biointeraction, dosimetery, instrumentation, and methods of measurement of specific absorption rate, criteria and magnitude of safe exposure and measurements of field in an open (unobstructed) environment.
Author: James Lin
Publisher: Springer Science & Business Media
ISBN: 1468480596
Category : Science
Languages : en
Pages : 294
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Book Description
Ever since the early 1940's, electromagnetic energy in the nonionizing spectrum has contributed to the enhanced quality of life in a variety of ways. Aside from their well-known roles in communication, entertainment, industry and science, electromagnetic energy has come into wide spread use in biology and medicine. In addition to the intended purposes, these energies produce other effects which have been shown to influence the life processes of living organisms. It is noteworthy that these energies are not only harmless in ordinary quantities but are actually necessary for modern life, indeed without which life as we know it would be impossible. The purpose of this book is to present a succinct summary of the interaction of electromagnetic fields and waves with biological systems as they are now known. The subject matter is interdisciplinary and is based primarily on presentations scheduled for a joint symposium at the XXII General Assembly of the International Union of Radio Science, held in Tel Aviv, Israel from Tuesday, August 25 to Wednesday, September 2, 1987. The symposium was jointly sponsored by the Bioelectromagnetics Society in cooperation with the International Radiation Protection Association. The choice of topics was made to facilitate the application and to stimulate the use of nonioni zing electromagnetic energy in biology and medicine, and to increase the awareness and to promote the consideration of radiation safety by electrical engineers and experimental physicists.
Author: James C. Lin
Publisher: CRC Press
ISBN: 1000218694
Category : Medical
Languages : en
Pages : 460
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Book Description
Spanning static fields to terahertz waves, this volume explores the range of consequences electromagnetic fields have on the human body. Topics discussed include essential interactions and field coupling phenomena; electric field interactions in cells, focusing on ultrashort, pulsed high-intensity fields; dosimetry or coupling of ELF fields into biological systems; and the historical developments and recent trends in numerical dosimetry. It also discusses mobile communication devices and the dosimetry of RF radiation into the human body, exposure and dosimetry associated with MRI and spectroscopy, and available data on the interaction of terahertz radiation with biological tissues, cells, organelles, and molecules.
Author: Riadh W.Y. Habash
Publisher: CRC Press
ISBN: 1351830279
Category : Technology & Engineering
Languages : en
Pages : 428
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Book Description
This reference explores the sources, characteristics, bioeffects, and health hazards of extremely low-frequency (ELF) fields and radio frequency radiation (RFR), analyzing current research as well as the latest epidemiological studies to assess potential risks associated with exposure and to develop effective safety guidelines. Compiles reports and investigations from four decades of study on the effect of nonionizing electromagnetic fields and radiation on human health Summarizing modern engineering approaches to control exposure, Electromagnetic Fields and Radiation discusses: EM interaction mechanisms in biological systems Explorations into the impact of EM fields on free radicals, cells, tissues, organs, whole organisms, and the population Regulatory standards in the United States, Canada, Europe, and Asia Pacific Evaluation of incident fields from various EM sources Measurement surveys for various sites including power lines, substations, mobile systems, cellular base stations, broadcast antennas, traffic radar devices, heating equipment, and other sources Dosimetry techniques for the determination of internal EM fields Conclusions reached by the Food and Drug Administration, World Health Organization, and other institutions
Author: André Vander Vorst
Publisher: John Wiley & Sons
ISBN: 0471752045
Category : Technology & Engineering
Languages : en
Pages : 346
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Book Description
From engineering fundamentals to cutting-edge clinical applications This book examines the biological effects of RF/microwaves and their medical applications. Readers will discover new developments in therapeutic applications in such areas as cardiology, urology, surgery, ophthalmology, and oncology. The authors also present developing applications in such areas as cancer detection and organ imaging. Focusing on frequency ranges from 100 kHz to 10 GHz, RF/Microwave Interaction with Biological Tissues is divided into six chapters: * Fundamentals in Electromagnetics--examines penetration of RF/microwaves into biological tissues; skin effect; relaxation effects in materials and the Cole-Cole model (display); the near field of an antenna; blackbody radiation and the various associated laws; and microwave measurements. * RF/Microwave Interaction Mechanisms in Biological Materials--includes a section devoted to the fundamentals of thermodynamics and a discussion on energy and entropy. * Biological Effects--investigates the effects of radio frequency fields on the nervous system, the brain and spinal cord, the blood-brain barrier, and cells and membranes. * Thermal Therapy--includes a description of applicators and an extensive discussion on the foundation of dielectric heating and inductive heating. * EM-Wave Absorbers Protecting the Biological and Medical Environment--investigates materials for EM-wave absorbers from both a theoretical and applications perspective. Special attention is given to ferrite absorbers. * RF/Microwave Delivery Systems for Therapeutic Applications--begins with the fundamental features of major components used in RF/microwave delivery systems for therapeutic applications. New research towards the development of future measurement techniques is also presented. The book features problem sets at the end of each chapter, making it an excellent introduction for bioengineering and engineering students. Researchers, physicians, and technicians in the field will also find this an excellent reference that offers all the fundamentals, the most cutting-edge applications, and insight into future developments. An Instructor's Manual presenting detailed solutions to all the problems in the book is available from the Wiley editorial department.
Author: Ben Greenebaum
Publisher: CRC Press
ISBN: 1351737546
Category : Technology & Engineering
Languages : en
Pages : 537
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Book Description
The two volumes of this new edition of the Handbook cover the basic biological, medical, physical, and electrical engineering principles. They also include experimental results concerning how electric and magnetic fields affect biological systems—both as potential hazards to health and potential tools for medical treatment and scientific research. They also include material on the relationship between the science and the regulatory processes concerning human exposure to the fields. Like its predecessors, this edition is intended to be useful as a reference book but also for introducing the reader to bioelectromagnetics or some of its aspects. FEATURES New topics include coverage of electromagnetic effects in the terahertz region, effects on plants, and explicitly applying feedback concepts to the analysis of biological electromagnetic effects Expanded coverage of electromagnetic brain stimulation, characterization and modeling of epithelial wounds, and recent lab experiments on at all frequencies Section on background for setting standards and precautionary principle Discussion of recent epidemiological, laboratory, and theoretical results; including: WHO IARC syntheses of epidemiological results on both high and low frequency fields, IITRI lab study of cancer in mice exposed to cell phone-like radiation, and other RF studies All chapters updated by internationally acknowledged experts in the field
