[PDF] Biomag 2000 eBook

Author : Wilfried Andrä
Publisher : John Wiley & Sons
Page : 655 pages
File Size : 35,12 MB
Release : 2007-02-27
Category : Medical
ISBN : 3527610189

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This second, completely updated and extended edition of the only reference work in this growing field of medical physics focuses on biomagnetic instrumentation as well as applications in cardiology and neurology. New chapters have been added on fetal magnetography and magnetic field therapy, as well as the safety aspects of magnetic fields. Written by well-known specialists from Germany, USA, Canada, Japan, the Netherlands and Scandinavia, the result is a manual for researchers in this field as well as for those who apply modern methods based on magnetism in medical practice. It equally provides a detailed overview for newcomers to the field as well as for experts familiar with only one part of the area.

Author : John Clarke
Publisher : John Wiley & Sons
Page : 409 pages
File Size : 37,16 MB
Release : 2006-03-06
Category : Science
ISBN : 3527604588

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This two-volume handbook offers a comprehensive and well coordinated presentation of SQUIDs (Superconducting Quantum Interference Devices), including device fundamentals, design, technology, system construction and multiple applications. It is intended to bridge the gap between fundamentals and applications, and will be a valuable textbook reference for graduate students and for professionals engaged in SQUID research and engineering. It will also be of use to specialists in multiple fields of practical SQUID applications, from human brain research and heart diagnostics to airplane and nuclear plant testing to prospecting for oil, minerals and buried ordnance. The first volume contains chapters presenting the theory of SQUIDs, their fabrication from low- and high-temperature superconductors, the necessary readout electronics, and the design and performance of practical direct current (dc) and radio-frequency (rf) SQUIDs. This volume concludes with an overview of the most important SQUID system issues. An appendix summarizes briefly the foundations of superconductivity that are necessary to understand SQUIDs. A glossary and tables of units and constants are also included. The second volume of the handbook will deal with applications of SQUIDs and SQUID systems.

Author : Paul Seidel
Publisher : John Wiley & Sons
Page : 1334 pages
File Size : 49,44 MB
Release : 2015-03-23
Category : Technology & Engineering
ISBN : 3527412093

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This wide-ranging presentation of applied superconductivity, from fundamentals and materials right up to the details of many applications, is an essential reference for physicists and engineers in academic research as well as in industry. Readers looking for a comprehensive overview on basic effects related to superconductivity and superconducting materials will expand their knowledge and understanding of both low and high Tc superconductors with respect to their application. Technology, preparation and characterization are covered for bulk, single crystals, thins fi lms as well as electronic devices, wires and tapes. The main benefit of this work lies in its broad coverage of significant applications in magnets, power engineering, electronics, sensors and quantum metrology. The reader will find information on superconducting magnets for diverse applications like particle physics, fusion research, medicine, and biomagnetism as well as materials processing. SQUIDs and their usage in medicine or geophysics are thoroughly covered, as are superconducting radiation and particle detectors, aspects on superconductor digital electronics, leading readers to quantum computing and new devices.

Author : Cheryl J. Aine
Publisher : Springer Science & Business Media
Page : 1218 pages
File Size : 21,79 MB
Release : 2013-11-11
Category : Science
ISBN : 146121260X

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A modified Linear Estimation Approach was performed to reconstruct current sources within the heart. Based on MRI data sets the Boundary Element Method was used to create tailored multicompartment models of the human thorax which were used to solve the forward problem of magnetocardiography. The ability of the proposed method was demonstrated for the localization of a single current dipole as an example of a focal source. By means of introducing small shiftings to all reconstruction dipoles during linear estimation solution as well as performing a successive focussing strategy ignoring places without significant electrical activity the method could easily be extended to the reconstruction of real 3D sources. Based on a special minimum-norm solution the source volume can be estimated applying a finite element approximation using cube elements. The size of an extended current source can be estimated by superimposing the reconstructed dipoles to an equivalent dipole and comparing the corresponding volume with the sphere which would be related to the equivalent dipole. The deviation of these volumes can be taken as a criterion for non-dipolarity of sources.

Author : Viktor K. Jirsa
Publisher : Springer
Page : 525 pages
File Size : 39,94 MB
Release : 2007-08-16
Category : Technology & Engineering
ISBN : 3540715126

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Our contemporary understanding of brain function is deeply rooted in the ideas of the nonlinear dynamics of distributed networks. Cognition and motor coordination seem to arise from the interactions of local neuronal networks, which themselves are connected in large scales across the entire brain. The spatial architectures between various scales inevitably influence the dynamics of the brain and thereby its function. But how can we integrate brain connectivity amongst these structural and functional domains? Our Handbook provides an account of the current knowledge on the measurement, analysis and theory of the anatomical and functional connectivity of the brain. All contributors are leading experts in various fields concerning structural and functional brain connectivity. In the first part of the Handbook, the chapters focus on an introduction and discussion of the principles underlying connected neural systems. The second part introduces the currently available non-invasive technologies for measuring structural and functional connectivity in the brain. Part three provides an overview of the analysis techniques currently available and highlights new developments. Part four introduces the application and translation of the concepts of brain connectivity to behavior, cognition and the clinical domain.

Author : Andrew C. Papanicolaou
Publisher : Cambridge University Press
Page : 220 pages
File Size : 13,85 MB
Release : 2009-08-13
Category : Medical
ISBN : 0521873754

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The first volume on clinical magnetoencephalography and magnetic source imaging, measuring the magnetic fields generated by neuronal activity in the brain.

Author : Toshiyuki Furukawa
Publisher : Springer Science & Business Media
Page : 312 pages
File Size : 15,29 MB
Release : 2013-03-09
Category : Medical
ISBN : 3662060817

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An excellent survey of and introduction to new methods of biological imaging and sensing, particularly related to biomedical measurements and controls. The main topics discussed include: cell imaging, multiphoton microscopy for biomedical studies, molecular imaging, infrared imaging, biomedical magnetic imaging, and microscopy with laser-trapped particles. The book also deals with nanosurgery with light, the effects of ultrasound on tissue, diagnostics, near- and far-infrared transmission of biomedical information, and cell sensors. This book will be a valuable resource for both medical doctors and biophysicists.