L'inhomogénéité du champ radiofréquence en résonance magnétique nucléaire

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ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (492 download)

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Book Synopsis L'inhomogénéité du champ radiofréquence en résonance magnétique nucléaire by : Sébastien Leclerc

Download or read book L'inhomogénéité du champ radiofréquence en résonance magnétique nucléaire written by Sébastien Leclerc and published by . This book was released on 2004 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce mémoire traite de l'utilisation de l'inhomogénéité naturelle du champ radiofréquence en Résonance Magnétique Nucléaire (RMN). Dans un premier chapitre est présenté un logiciel de génération et de simulation de séquences impulsionnelles prenant en compte les différents types d'inhomogénéité en RMN. Ces simulations ont été appliquées à des expériences visant à mesurer la vitesse de corrélation croisée CSA-dipolaire. Le deuxième chapitre est consacré à la mise au point de procédures expérimentales destinées à la sélection spatiale de tranches dans l'échantillon et basées sur l'inhomogénéité naturelle du champ radiofréquence. Ces procédures, couplées à un déplacement vertical de l'échantillon, ont été utilisées afin de suivre l'évolution du spectre RMN dans un échantillon hétérogène. Le chapitre 3 présente une méthode originale de mesure des coefficients d'autodiffusion utilisant les procédures de sélection de tranche. Cette méthode a été testée avec succès sur différents produits.

Introduction à la Résonance Magnétique Nucléaire

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Publisher : Editions Ellipses
ISBN 13 : 2340074843
Total Pages : 338 pages
Book Rating : 4.3/5 (4 download)

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Book Synopsis Introduction à la Résonance Magnétique Nucléaire by : Serge Akoka

Download or read book Introduction à la Résonance Magnétique Nucléaire written by Serge Akoka and published by Editions Ellipses. This book was released on 2022-10-04 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cet ouvrage propose une approche phénoménologique des principes et de quelques applications de la RMN. Les explications s’appuient sur de nombreuses illustrations. Chaque chapitre se termine par une liste de lectures pour aller plus loin dans le domaine traité. Il s'adresse aux étudiants de licences et masters scientifiques, aux étudiants de médecine et de pharmacie et aux chercheurs non spécialistes mais qui doivent avoir recours à cette technique.

NOUVELLE EXPERIENCE DE RESONANCE MAGNETIQUE NUCLEAIRE (RMN) A BAS CHAMP ET TRES BASSE TEMPERATURE DETECTEE PAR UN SQUID

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ISBN 13 :
Total Pages : 130 pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis NOUVELLE EXPERIENCE DE RESONANCE MAGNETIQUE NUCLEAIRE (RMN) A BAS CHAMP ET TRES BASSE TEMPERATURE DETECTEE PAR UN SQUID by : MARTIN.. WURM

Download or read book NOUVELLE EXPERIENCE DE RESONANCE MAGNETIQUE NUCLEAIRE (RMN) A BAS CHAMP ET TRES BASSE TEMPERATURE DETECTEE PAR UN SQUID written by MARTIN.. WURM and published by . This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'EXPERIENCE A ETE CONCU POUR L'ETUDE DE LA SUPRACONDUCTIVITE DANS DES SYSTEMES A FERMIONS LOURDS, QUI EST PROBABLEMENT DE NATURE NON CONVENTIONNELLE. LEURS PROPRIETES PHYSIQUES DEPENDENT FORTEMENT DE LA QUALITE DES ECHANTILLONS, C'EST POURQUOI ON ETUDIE DES MONOCRISTAUX DE HAUTE QUALITE. A CAUSE DE LA LONGUEUR DE PENETRATION FINIE DE LA RADIOFREQUENCE DANS LES METAUX CECI NECESSITE DE TRAVAILLER A DES FREQUENCES 100KHZ. C'EST DIFFICILE AVEC DES METHODES CONVENTIONNELLES DE RMN, BIEN ADAPTEES POUR DES FREQUENCES TYPIQUES DE >10 MHZ. ET A 100 KHZ, UNE DETECTION A SQUID DEVIENT PLUS SENSIBLE QUE LES METHODES CONVENTIONNELLES. LA PLUS GRANDE PARTIE DE CE TRAVAIL A ETE LA MISE AU POINT DE L'EXPERIENCE. IL A FALLU TROUVER LA GEOMETRIE LA MIEUX ADAPTEE, ECRANTER L'EXPERIENCE DES PERTURBATIONS ELECTROMAGNETIQUES ET DIMINUER LE BRUIT CAUSE PAR LES VIBRATIONS. UNE AUTRE DIFFICULTE EST VENUE DE L'INEVITABLE PARAMAGNETISME DES MATERIAUX DE CONSTRUCTION. IL IMPOSE UNE EXCELLENTE STABILITE EN TEMPERATURE ET D'AUTRES PRECAUTIONS POUR EVITER LES ECHAUFFEMENTS PAR LA RADIOFREQUENCE. DANS NOTRE EXPERIENCE DE RMN A SQUID ON DETECTE LA RELAXATION LONGITUDINALE DE L'AIMANTATION D'UN ECHANTILLON APRES UNE EXCITATION SELECTIVE DES NOYAUX A LA FREQUENCE DE LARMOR (AVEC LES METHODES CONVENTIONNELLES ON UTILISE UNE DETECTION RESONANTE A CETTE FREQUENCE POUR MESURER LA COMPOSANTE TRANSVERSE DE L'AIMANTATION NUCLEAIRE). LA MESURE DU TEMPS DE RELAXATION SPIN-RESEAU EST PAR CONSEQUENT DIRECTE ET LE TEMPS DE DEPHASAGE TRANSVERSE (T#2) N'INFLUENCE PAS LA MESURE. NOTRE EXPERIENCE EST ENTIEREMENT CONTROLEE PAR ORDINATEUR ET PERMET LA MESURE DE T#1 ET DE LA FORME DE RAIE AUTOMATIQUEMENT EN FONCTION DE LA TEMPERATURE DANS UN CHAMP MAGNETIQUE FIXE. LES RESULTATS SUR LES ECHANTILLONS DE TEST MONTRENT BIEN QUE LA SENSIBILITE DU NOUVEAU MONTAGE EST SUFFISANTE POUR L'ETUDE DE MONOCRISTAUX DE SYSTEMES A FERMIONS LOURDS ET A NOTRE CONNAISSANCE, ELLE EST INEGALEE DANS LA LITTERATURE.

Cours sur les phénomènes à la résonance magnétique: Résonance magnétique nucléaire, 1955-1956. [1956?

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ISBN 13 :
Total Pages : 374 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Cours sur les phénomènes à la résonance magnétique: Résonance magnétique nucléaire, 1955-1956. [1956? by : A. Abragam

Download or read book Cours sur les phénomènes à la résonance magnétique: Résonance magnétique nucléaire, 1955-1956. [1956? written by A. Abragam and published by . This book was released on 1956 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

INIS Atomindex

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ISBN 13 :
Total Pages : 1038 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis INIS Atomindex by :

Download or read book INIS Atomindex written by and published by . This book was released on 1987 with total page 1038 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Helvetica Chimica Acta

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Publisher :
ISBN 13 :
Total Pages : 510 pages
Book Rating : 4.:/5 (6 download)

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Book Synopsis Helvetica Chimica Acta by :

Download or read book Helvetica Chimica Acta written by and published by . This book was released on 1967 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Magnetic Resonance of the Heart and Great Vessels

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Publisher : Springer
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Magnetic Resonance of the Heart and Great Vessels by : A.J. Duerinckx

Download or read book Magnetic Resonance of the Heart and Great Vessels written by A.J. Duerinckx and published by Springer. This book was released on 1999 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts

NMR Imaging in Biomedicine

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Publisher : Elsevier
ISBN 13 : 0323154069
Total Pages : 365 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis NMR Imaging in Biomedicine by : P Mansfield

Download or read book NMR Imaging in Biomedicine written by P Mansfield and published by Elsevier. This book was released on 1982-04-28 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: NMR Imaging in Biomedicine: Advances in Magnetic Resonance discusses significant advances in NMR imaging and its application to the field of biomedicine. This book is organized into 10 chapters that cover the classification, methods, imaging regimes, and the potential use of NMR imaging in medicine. After discussing the basic theoretical ideas of NMR and its application to NMR imaging, this book presents mathematical analyses of the various NMR techniques, focusing primarily on the comparison in terms of imaging speed and data-acquisition rate. It also covers a number of practical ranges or imaging regimes in terms of sensitivity, sample size, and operating frequency. Significant topics on potential application of NMR imaging in medicine, apparatus requirements in the instrumentation of NMR imaging machines, and the principles of biomagnetic effects are discussed in other chapters. The considered biomagnetic effects are categorized into three main groups: the effects of static magnetic fields, the effects of relatively slow varying time-dependent fields, and radio-frequency magnetic fields. This book is of great value to radiologists, medical physicists, neuroradiologists, anatomists, physiologists, and postgraduate students of NMR imaging.

How does MRI work?

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Publisher : Springer Science & Business Media
ISBN 13 : 3540378456
Total Pages : 172 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis How does MRI work? by : Dominik Weishaupt

Download or read book How does MRI work? written by Dominik Weishaupt and published by Springer Science & Business Media. This book was released on 2008-02-01 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: A succinct introduction to the physics and function of magnetic resonance imaging with an emphasis on practical information. This thoroughly revised second edition is clearly structured. The underlying physical principles of the MR experiment are described and the basic pulse sequences commonly used in clinical MRI. It progresses to more advanced techniques such as parallel imaging and cardiovascular MR imaging. An extensive glossary offers rapid access to MRI terminology and will help those seeking to understand this interesting fascinating subject.

Magnetic Resonance Imaging

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Publisher : Elsevier
ISBN 13 : 0080535704
Total Pages : 197 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Magnetic Resonance Imaging by : Vadim Kuperman

Download or read book Magnetic Resonance Imaging written by Vadim Kuperman and published by Elsevier. This book was released on 2000-03-15 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended as a text/reference for students, researchers, and professors interested in physical and biomedical applications of Magnetic Resonance Imaging (MRI). Both the theoretical and practical aspects of MRI are emphasized. The book begins with a comprehensive discussion of the Nuclear Magnetic Resonance (NMR) phenomenon based on quantum mechanics and the classical theory of electromagnetism. The first three chapters of this book provide the foundation needed to understand the basic characteristics of MR images, e.g.,image contrast, spatial resolution, signal-to-noise ratio, common image artifacts. Then MRI applications are considered in the following five chapters. Both the theoretical and practical aspects of MRI are emphasized. The book ends with a discussion of instrumentation and the principles of signal detection in MRI. Clear progression from fundamental physical principles of NMR to MRI and its applications Extensive discussion of image acquisition and reconstruction of MRI Discussion of different mechanisms of MR image contrast Mathematical derivation of the signal-to-noise dependence on basic MR imaging parameters as well as field strength In-depth consideration of artifacts in MR images Comprehensive discussion of several techniques used for rapid MR imaging including rapid gradient-echo imaging, echo-planar imaging, fast spin-echo imaging and spiral imaging Qualitative discussion combined with mathematical description of MR techniques for imaging flow

Lightning Protection Guidelines for Aerospace Vehicles

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Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Lightning Protection Guidelines for Aerospace Vehicles by : C. C. Goodloe

Download or read book Lightning Protection Guidelines for Aerospace Vehicles written by C. C. Goodloe and published by . This book was released on 1999 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Magnetic Resonance Imaging

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Publisher : John Wiley & Sons
ISBN 13 : 0471720852
Total Pages : 976 pages
Book Rating : 4.4/5 (717 download)

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Book Synopsis Magnetic Resonance Imaging by : Robert W. Brown

Download or read book Magnetic Resonance Imaging written by Robert W. Brown and published by John Wiley & Sons. This book was released on 2014-06-23 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: New edition explores contemporary MRI principles and practices Thoroughly revised, updated and expanded, the second edition of Magnetic Resonance Imaging: Physical Principles and Sequence Design remains the preeminent text in its field. Using consistent nomenclature and mathematical notations throughout all the chapters, this new edition carefully explains the physical principles of magnetic resonance imaging design and implementation. In addition, detailed figures and MR images enable readers to better grasp core concepts, methods, and applications. Magnetic Resonance Imaging, Second Edition begins with an introduction to fundamental principles, with coverage of magnetization, relaxation, quantum mechanics, signal detection and acquisition, Fourier imaging, image reconstruction, contrast, signal, and noise. The second part of the text explores MRI methods and applications, including fast imaging, water-fat separation, steady state gradient echo imaging, echo planar imaging, diffusion-weighted imaging, and induced magnetism. Lastly, the text discusses important hardware issues and parallel imaging. Readers familiar with the first edition will find much new material, including: New chapter dedicated to parallel imaging New sections examining off-resonance excitation principles, contrast optimization in fast steady-state incoherent imaging, and efficient lower-dimension analogues for discrete Fourier transforms in echo planar imaging applications Enhanced sections pertaining to Fourier transforms, filter effects on image resolution, and Bloch equation solutions when both rf pulse and slice select gradient fields are present Valuable improvements throughout with respect to equations, formulas, and text New and updated problems to test further the readers' grasp of core concepts Three appendices at the end of the text offer review material for basic electromagnetism and statistics as well as a list of acquisition parameters for the images in the book. Acclaimed by both students and instructors, the second edition of Magnetic Resonance Imaging offers the most comprehensive and approachable introduction to the physics and the applications of magnetic resonance imaging.

Imaging Systems for Medical Diagnostics

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Publisher : John Wiley & Sons
ISBN 13 : 3895786691
Total Pages : 996 pages
Book Rating : 4.8/5 (957 download)

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Book Synopsis Imaging Systems for Medical Diagnostics by : Arnulf Oppelt

Download or read book Imaging Systems for Medical Diagnostics written by Arnulf Oppelt and published by John Wiley & Sons. This book was released on 2011-02-25 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a comprehensive compilation of fundamentals, technical solutions and applications for medical imaging systems. It is intended as a handbook for students in biomedical engineering, for medical physicists, and for engineers working on medical technologies, as well as for lecturers at universities and engineering schools. For qualified personnel at hospitals, and physicians working with these instruments it serves as a basic source of information. This also applies for service engineers and marketing specialists. The book starts with the representation of the physical basics of image processing, implying some knowledge of Fourier transforms. After that, experienced authors describe technical solutions and applications for imaging systems in medical diagnostics. The applications comprise the fields of X-ray diagnostics, computed tomography, nuclear medical diagnostics, magnetic resonance imaging, sonography, molecular imaging and hybrid systems. Considering the increasing importance of software based solutions, emphasis is also laid on the imaging software platform and hospital information systems.

Ventricular Wall Motion

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Publisher : Thieme-Stratton Corporation
ISBN 13 : 9780865771468
Total Pages : 327 pages
Book Rating : 4.7/5 (714 download)

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Book Synopsis Ventricular Wall Motion by : Ulrich Sigwart

Download or read book Ventricular Wall Motion written by Ulrich Sigwart and published by Thieme-Stratton Corporation. This book was released on 1984 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Principles of Magnetic Resonance Imaging

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Publisher : Wiley-IEEE Press
ISBN 13 :
Total Pages : 442 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Principles of Magnetic Resonance Imaging by : Zhi-Pei Liang

Download or read book Principles of Magnetic Resonance Imaging written by Zhi-Pei Liang and published by Wiley-IEEE Press. This book was released on 2000 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1971 Dr. Paul C. Lauterbur pioneered spatial information encoding principles that made image formation possible by using magnetic resonance signals. Now Lauterbur, "father of the MRI", and Dr. Zhi-Pei Liang have co-authored the first engineering textbook on magnetic resonance imaging. This long-awaited, definitive text will help undergraduate and graduate students of biomedical engineering, biomedical imaging scientists, radiologists, and electrical engineers gain an in-depth understanding of MRI principles. The authors use a signal processing approach to describe the fundamentals of magnetic resonance imaging. You will find a clear and rigorous discussion of these carefully selected essential topics: Mathematical fundamentals Signal generation and detection principles Signal characteristics Signal localization principles Image reconstruction techniques Image contrast mechanisms Image resolution, noise, and artifacts Fast-scan imaging Constrained reconstruction Complete with a comprehensive set of examples and homework problems, Principles of Magnetic Resonance Imaging is the must-read book to improve your knowledge of this revolutionary technique.

NMR Imaging of Materials

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Publisher : Oxford University Press
ISBN 13 : 9780198526766
Total Pages : 541 pages
Book Rating : 4.5/5 (267 download)

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Book Synopsis NMR Imaging of Materials by : Bernhard Blümich

Download or read book NMR Imaging of Materials written by Bernhard Blümich and published by Oxford University Press. This book was released on 2003-01 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: NMR imaging of materials is a field of increasing importance. Applications expand from fundamental science like the characterization of fluid transport in porous rock, catalyst pellets and hemodialyzers into various fields of engineering for process optimization and product and quality control, for example, of polymer materials, biomaterials, elastomers, and ceramics. While the results of NMR imaging are being appreciated in a growing community, the methods of imaging are far more diverse for materials applications that for medical imaging of humans. This book provides an introduction to NMR imaging of materials covering solid-state NMR spectroscopy, imaging methods for liquid and solid samples and unusual NMR in terms of special approaches to spatial resolution like an NMR surface scanner. SPecial attention is paid to the large variety of ways to generate image contrast-the most prominent feature of NMR. The text is strong on methodology, and includes today's important application areas.

NMR in Biomedicine

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Publisher : Springer Science & Business Media
ISBN 13 : 9780883186091
Total Pages : 186 pages
Book Rating : 4.1/5 (86 download)

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Book Synopsis NMR in Biomedicine by : Eiichi Fukushima

Download or read book NMR in Biomedicine written by Eiichi Fukushima and published by Springer Science & Business Media. This book was released on 1989-01-01 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: For scientists in physics, chemistry, biology, engineering, medicine, and other disciplines