Rf Coil Design For Multi Frequency Magnetic Resonance Imaging And Spectroscopy
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Rf Coil Design For Multi Frequency Magnetic Resonance Imaging And Spectroscopy
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Author : Arash Dabirzadeh
language : en
Publisher:
Release Date : 2010
Rf Coil Design For Multi Frequency Magnetic Resonance Imaging And Spectroscopy written by Arash Dabirzadeh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Magnetic Resonance Spectroscopy is known as a valuable diagnostic tool for physicians as well as a research tool for biochemists. In addition to hydrogen (which is the most abundant atom with nuclear magnetic resonance capability), other species (such as 31P or 13C) are used as well, to obtain certain information such as metabolite concentrations in neural or muscular tissues. However, this requires nuclear magnetic resonance (NMR) transmitter/receivers (coils) capable of operating at multiple frequencies, while maintaining a good performance at each frequency. The objective of this work is to discuss various design approaches used for second-nuclei RF (radio frequency) coils, and to analyze the performance of a particular design, which includes using inductor-capacitor (LC) trap circuits on a 31P coil. The method can be easily applied to other nuclei. The main advantage of this trapping method is the enabling design of second-nuclei coils that are insertable into standard proton coils, maintaining a near-optimum performance for both nuclei. This capability is particularly applicable as MRI field strengths increase and the use of specialized proton coils becomes more prevalent. A thorough performance analysis shows the benefit of this method over other designs, which usually impose a significant signal-to-noise (SNR) sacrifice on one of the nuclei. A methodology based on a modular coil configuration was implemented, which allowed for optimization of LC trap decoupling as well as performance analysis. The 31P coil was used in conjunction with various standard 1H coil configurations (surface/volume/array), using the trap design to overcome the coupling problem (degraded SNR performance) mentioned above. An analytical model was developed and guidelines on trap design were provided to help optimize sensitivity. The performance was analyzed with respect to the untrapped case, using RF bench measurements as well as data obtained from the NMR scanner. Insertability of this coil design was then verified by using it with general-purpose proton coils available. Phantoms were built to mimic the phosphorus content normally found in biologic tissues in order to verify applicability of this coil for in vivo studies. The contribution of this work lies in the quantification of general design parameters to enable "insertable" second-nuclei coils, in terms of the effects on SNR and resonance frequency of a given proton coil.
In Vivo Magnetic Resonance Spectroscopy I Probeheads And Radiofrequency Pulses Spectrum Analysis
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Author : M. Rudin
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
In Vivo Magnetic Resonance Spectroscopy I Probeheads And Radiofrequency Pulses Spectrum Analysis written by M. Rudin and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
RF Probeheads 1. J. Link, Faellanden, Switzerland The Design of Resonator Probes with Homogeneous Radiofrequency Fields 2. M. Schnall, Philadelphia, PA/USA Probes Tuned to Multiple Frequencies for In-Vivo NMR RF Pulses 3. P.C.M. van Zijl, Rockville, MD/USA; C.T.W. Moonen, Bethesda, MD/USA Solvent Suppression Strategies for In Vivo Magnetic Resonance Spectroscopy 4. M. Garwood, K. Ugurbil, Minneapolis, MN/USA B1 Insensitive Adiabatic RF Pulses 5. P.G. Morris, Nottingham, UK Frequency Selective Excitation Using Phase-Compensated RF Pulses in One andTwo Dimensions 6. S. Mueller, Basel, Switzerland RF Pulses for MultipleFrequency Excitation: Theory and Application Spectrum Analysis 7. R. de Beer, D. van Ormondt, Delft, The Nethelands Analysis of NMR Data Using Time Domain Fitting Procedures 8. E.B. Cady, London, UK Determination of Absolute Concentrations of Metabolites from NMR Spectra.
Handbook Of Neuro Oncology Neuroimaging
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Author : Herbert B. Newton
language : en
Publisher: Elsevier
Release Date : 2007-11-28
Handbook Of Neuro Oncology Neuroimaging written by Herbert B. Newton and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-28 with Medical categories.
Although the field of Neuro-Oncology has grown considerably in the last 10 to 15 years and has a rather extensive literature, there are no comprehensive, "single-source books that summarize the current literature and future trends of neuroimaging in neuro-oncology. This book covers this topic in more comprehensive fashion, making it an important addition to the armamentarium of physicians that care for patients with brain tumors and other neuro-oncological disorders. Well-founded in basic science, it includes chapters that provide an overview of relevant background material in critical areas such as physics, contrast agents, ultra-high field brain MRI, and molecular imaging.
Ultra High Field Magnetic Resonance Imaging
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Author : Pierre-Marie Robitaille
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-12-31
Ultra High Field Magnetic Resonance Imaging written by Pierre-Marie Robitaille and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-12-31 with Medical categories.
The foundation for understanding the function and dynamics of biological systems is not only knowledge of their structure, but the new methodologies and applications used to determine that structure. This volume in Biological Magnetic Resonance emphasizes the methods that involve Ultra High Field Magnetic Resonance Imaging. It will interest researchers working in the field of imaging.
In Vivo Nmr Spectroscopy
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Author : Robin A. de Graaf
language : en
Publisher: John Wiley & Sons
Release Date : 2019-03-11
In Vivo Nmr Spectroscopy written by Robin A. de Graaf and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-03-11 with Science categories.
Presents basic concepts, experimental methodology and data acquisition, and processing standards of in vivo NMR spectroscopy This book covers, in detail, the technical and biophysical aspects of in vivo NMR techniques and includes novel developments in the field such as hyperpolarized NMR, dynamic 13C NMR, automated shimming, and parallel acquisitions. Most of the techniques are described from an educational point of view, yet it still retains the practical aspects appreciated by experimental NMR spectroscopists. In addition, each chapter concludes with a number of exercises designed to review, and often extend, the presented NMR principles and techniques. The third edition of In Vivo NMR Spectroscopy: Principles and Techniques has been updated to include experimental detail on the developing area of hyperpolarization; a description of the semi-LASER sequence, which is now a method of choice; updated chemical shift data, including the addition of 31P data; a troubleshooting section on common problems related to shimming, water suppression, and quantification; recent developments in data acquisition and processing standards; and MatLab scripts on the accompanying website for helping readers calculate radiofrequency pulses. Provide an educational explanation and overview of in vivo NMR, while maintaining the practical aspects appreciated by experimental NMR spectroscopists Features more experimental methodology than the previous edition End-of-chapter exercises that help drive home the principles and techniques and offer a more in-depth exploration of quantitative MR equations Designed to be used in conjunction with a teaching course on the subject In Vivo NMR Spectroscopy: Principles and Techniques, 3rd Edition is aimed at all those involved in fundamental and/or diagnostic in vivo NMR, ranging from people working in dedicated in vivo NMR institutes, to radiologists in hospitals, researchers in high-resolution NMR and MRI, and in areas such as neurology, physiology, chemistry, and medical biology.
Research Awards Index
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Author :
language : en
Publisher:
Release Date : 1989
Research Awards Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Medicine categories.
Fluorine Magnetic Resonance Imaging
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Author : Ulrich Flogel
language : en
Publisher: CRC Press
Release Date : 2016-10-26
Fluorine Magnetic Resonance Imaging written by Ulrich Flogel and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-26 with Medical categories.
Over the past decade, fluorine (19F) magnetic resonance imaging (MRI) has garnered significant scientific interest in the biomedical research community owing to the unique properties of fluorinated materials and the 19F nucleus. Fluorine has an intrinsically sensitive nucleus for MRI. There is negligible endogenous 19F in the body and thus there is no background signal. Fluorine-containing compounds are ideal tracer labels for a wide variety of MRI applications. Moreover, the chemical shift and nuclear relaxation rate can be made responsive to physiology via creative molecular design. This book is an interdisciplinary compendium that details cutting-edge science and medical research in the emerging field of 19F MRI. Edited by Ulrich Flögel and Eric Ahrens, two prominent MRI researchers, this book will appeal to investigators involved in MRI, biomedicine, immunology, pharmacology, probe chemistry, and imaging physics.
Biomedical Index To Phs Supported Research
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Author :
language : en
Publisher:
Release Date : 1990
Biomedical Index To Phs Supported Research written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Medicine categories.
Nuclear Magnetic Resonance
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Author : G. A. Webb
language : en
Publisher: Royal Society of Chemistry
Release Date : 2010-03
Nuclear Magnetic Resonance written by G. A. Webb and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-03 with Medical categories.
As a spectroscopic method, nuclear magnetic resonance (NMR) has seen spectacular growth, both as a technique and in its applications. Today's applications of NMR span a wide range of scientific disciplines, from physics to biology to medicine. Each volume of Nuclear Magnetic Resonance comprises a combination of annual and biennial reports which together provide comprehensive coverage of the literature on this topic. This Specialist Periodical Report reflects the growing volume of published work involving NMR techniques and applications, in particular NMR of natural macromolecules, which is covered in two reports: NMR of Proteins and Nucleic Acids and NMR of Carbohydrates, Lipids and Membranes. For those wanting to become rapidly aquainted with specific areas of NMR, Nuclear Magnetic Resonance provides unrivalled scope of coverage. Seasoned practitioners of NMR will find this an invaluable source of current methods and applications.
Smart Antennas Electromagnetic Interference And Microwave Antennas For Wireless Communications
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Author : S. Kannadhasan
language : en
Publisher: CRC Press
Release Date : 2023-02-16
Smart Antennas Electromagnetic Interference And Microwave Antennas For Wireless Communications written by S. Kannadhasan and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-02-16 with Science categories.
This book covers all areas of smart antennas, electromagnetic interference, and microwave antennas for wireless communications. Smart antennas or adaptive antennas are multi-antenna components on one or both sides of a radio communication connection, combined with advanced signal processing algorithms. They've evolved into a critical technology for third-generation and beyond mobile communication systems to meet their lofty capacity and performance targets. It seems that a significant capacity gain is achievable, particularly if they are employed on both sides of the connection. There are several essential characteristics of these systems that need scientific and technical investigation. Included in the book are beamforming, massive MIMO, network MIMO, mmwave transmission, compressive sensing, MIMO radar, sensor networks, vehicle-to-vehicle communication, location, and machine learning.