Fast Magnetic Resonance Body Imaging

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Fast Magnetic Resonance Body Imaging

Author : Hiroto Hatabu,Herwig Imhof
Publisher : Elsevier Science Health Science Division
Page : 122 pages
File Size : 47,6 Mb
Release : 2000
Category : Medical
ISBN : 0444505164

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Fast Magnetic Resonance Body Imaging by Hiroto Hatabu,Herwig Imhof Pdf

Magnetic Resonance Imaging (MRI) techniques differ enormously nowadays from when it was first introduced back in the 1980's. Better resolution of details and extremely short acquisition times have changed the clinical position of MRI and have opened up new fields of application. It is still rapidly evolving in terms of research and clinical applications. This is particularly true for fast MRI body imaging. This book, which was originally published as a topic issue of "Fast Body MR Imaging" in the European Journal of Radiology, brings together a number of prominent authors. It begins with an overview of the fast MRI techniques. Then the current applications and limitations of fast MR imaging are discussed by organ system: heart, lung, kidneys, liver, pancreas and biliary system, and pelvis. Each chapter finishes with a brief paragraph on scope or future direction. The book will guide to the topic of fast MR imaging technique which is changing the whole scope of body MRI.

Fast Quantitative Magnetic Resonance Imaging

Author : Guido Buonincontri,Joshua Kaggie,Martin Graves
Publisher : Morgan & Claypool Publishers
Page : 142 pages
File Size : 51,7 Mb
Release : 2020-02-20
Category : Medical
ISBN : 9781681736952

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Fast Quantitative Magnetic Resonance Imaging by Guido Buonincontri,Joshua Kaggie,Martin Graves Pdf

Among medical imaging modalities, magnetic resonance imaging (MRI) stands out for its excellent soft-tissue contrast, anatomical detail, and high sensitivity for disease detection. However, as proven by the continuous and vast effort to develop new MRI techniques, limitations and open challenges remain. The primary source of contrast in MRI images are the various relaxation parameters associated with the nuclear magnetic resonance (NMR) phenomena upon which MRI is based. Although it is possible to quantify these relaxation parameters (qMRI) they are rarely used in the clinic, and radiological interpretation of images is primarily based upon images that are relaxation time weighted. The clinical adoption of qMRI is mainly limited by the long acquisition times required to quantify each relaxation parameter as well as questions around their accuracy and reliability. More specifically, the main limitations of qMRI methods have been the difficulty in dealing with the high inter-parameter correlations and a high sensitivity to MRI system imperfections. Recently, new methods for rapid qMRI have been proposed. The multi-parametric models at the heart of these techniques have the main advantage of accounting for the correlations between the parameters of interest as well as system imperfections. This holistic view on the MR signal makes it possible to regress many individual parameters at once, potentially with a higher accuracy. Novel, accurate techniques promise a fast estimation of relevant MRI quantities, including but not limited to longitudinal (T1) and transverse (T2) relaxation times. Among these emerging methods, MR Fingerprinting (MRF), synthetic MR (syMRI or MAGIC), and T1‒T2 Shuffling are making their way into the clinical world at a very fast pace. However, the main underlying assumptions and algorithms used are sometimes different from those found in the conventional MRI literature, and can be elusive at times. In this book, we take the opportunity to study and describe the main assumptions, theoretical background, and methods that are the basis of these emerging techniques. Quantitative transient state imaging provides an incredible, transformative opportunity for MRI. There is huge potential to further extend the physics, in conjunction with the underlying physiology, toward a better theoretical description of the underlying models, their application, and evaluation to improve the assessment of disease and treatment efficacy.

Quantitative Magnetic Resonance Imaging

Author : Nicole Seiberlich,Vikas Gulani,Adrienne Campbell-Washburn,Steven Sourbron,Mariya Ivanova Doneva,Fernando Calamante,Houchun Harry Hu
Publisher : Academic Press
Page : 1094 pages
File Size : 55,5 Mb
Release : 2020-11-18
Category : Computers
ISBN : 9780128170588

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Quantitative Magnetic Resonance Imaging by Nicole Seiberlich,Vikas Gulani,Adrienne Campbell-Washburn,Steven Sourbron,Mariya Ivanova Doneva,Fernando Calamante,Houchun Harry Hu Pdf

Quantitative Magnetic Resonance Imaging is a ‘go-to’ reference for methods and applications of quantitative magnetic resonance imaging, with specific sections on Relaxometry, Perfusion, and Diffusion. Each section will start with an explanation of the basic techniques for mapping the tissue property in question, including a description of the challenges that arise when using these basic approaches. For properties which can be measured in multiple ways, each of these basic methods will be described in separate chapters. Following the basics, a chapter in each section presents more advanced and recently proposed techniques for quantitative tissue property mapping, with a concluding chapter on clinical applications. The reader will learn: The basic physics behind tissue property mapping How to implement basic pulse sequences for the quantitative measurement of tissue properties The strengths and limitations to the basic and more rapid methods for mapping the magnetic relaxation properties T1, T2, and T2* The pros and cons for different approaches to mapping perfusion The methods of Diffusion-weighted imaging and how this approach can be used to generate diffusion tensor maps and more complex representations of diffusion How flow, magneto-electric tissue property, fat fraction, exchange, elastography, and temperature mapping are performed How fast imaging approaches including parallel imaging, compressed sensing, and Magnetic Resonance Fingerprinting can be used to accelerate or improve tissue property mapping schemes How tissue property mapping is used clinically in different organs Structured to cater for MRI researchers and graduate students with a wide variety of backgrounds Explains basic methods for quantitatively measuring tissue properties with MRI - including T1, T2, perfusion, diffusion, fat and iron fraction, elastography, flow, susceptibility - enabling the implementation of pulse sequences to perform measurements Shows the limitations of the techniques and explains the challenges to the clinical adoption of these traditional methods, presenting the latest research in rapid quantitative imaging which has the possibility to tackle these challenges Each section contains a chapter explaining the basics of novel ideas for quantitative mapping, such as compressed sensing and Magnetic Resonance Fingerprinting-based approaches

Magnetic Resonance Elastography

Author : Sudhakar K. Venkatesh,Richard L. Ehman
Publisher : Springer
Page : 143 pages
File Size : 41,5 Mb
Release : 2014-10-01
Category : Medical
ISBN : 9781493915750

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Magnetic Resonance Elastography by Sudhakar K. Venkatesh,Richard L. Ehman Pdf

The first book to cover the groundbreaking development and clinical applications of Magnetic Resonance Elastography, this book is essential for all practitioners interested in this revolutionary diagnostic modality. The book is divided into three sections. The first covers the history of MRE. The second covers technique and clinical applications of MRE in the liver with respect to fibrosis, liver masses, and other diseases. Case descriptions are presented to give the reader a hands-on approach. The final section presents the techniques, sequence and preliminary results of applications in other areas of the body including muscle, brain, lung, heart, and breast.

Ultrafast MRI

Author : Jörg F. Debatin,Graeme C. McKinnon
Publisher : Springer Science & Business Media
Page : 364 pages
File Size : 40,8 Mb
Release : 2012-12-06
Category : Medical
ISBN : 9783642803840

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Ultrafast MRI by Jörg F. Debatin,Graeme C. McKinnon Pdf

The imaging potential of the MR experiment continues to evolve. In recent years, an increasing number of fast and ultrafast imaging strategies has been described. In this evolu tion the definition of the terms fast and ultrafast has been blurred. Hence they are frequently used interchangeably. The evolution of these methods has been based on two related, yet separate developments: an increasingly thorough understand ing of the complexities inherent to pulse sequence design and the increasing availability of stronger and faster gradient sys tems. The combination of these two factors has laid the foun dation for vast reductions of MRI data acquisition times. Min utes have been replaced by seconds. Beyond shortening MR examination times and thereby increasing patient throughput, a most significant consequence has been the ability to acquire complex MR image sets within the time confines of a single breath-hold. The constraints placed by the presence of respi ratory motion have thus been effectively eliminated. Ultrafast breath-held data acquisition strategies already represent the backbone of many abdominal, thoracic and even pelvic imaging protocols. The enhanced image quality permits full exploitation of the unsurpassed soft tissue contrast inherent to the MR experiment. Beyond improving the quality of ex isting applications, the implementation of ultrafast imaging techniques has permitted the exploration of new imaging in dications, particularly in the area of perfusion and diffusion as well as ultrafast 3D imaging.

Accelerated Dynamic Magnetic Resonance Imaging

Author : Jennifer Steeden,Vivek Muthurangu
Publisher : Academic Press
Page : 0 pages
File Size : 46,8 Mb
Release : 2023-09-01
Category : Science
ISBN : 0323953417

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Accelerated Dynamic Magnetic Resonance Imaging by Jennifer Steeden,Vivek Muthurangu Pdf

Magnetic Resonance Imaging (MRI) scans play a vital role in diagnosis and monitoring of diseases across the body. However, MRI is a relatively slow imaging technology, resulting in long scan times. This is particularly challenging when imaging dynamic processes. Accelerated Dynamic Magnetic Resonance Imaging: Methods and Applications explains the technologies which can speed up MRI imaging and shows how they have been applied to a broad range of application areas, presenting the challenges and giving practical advice on implementation. With this book the reader will be able to: Modify the MRI sequences to speed up acquisition of data (non-Cartesian trajectories and data under sampling); Use the techniques (parallel imaging, compressed sensing and machine learning) which are commonly used to reconstruct under sampled MRI data; Implement fast MRI imaging techniques for their application areas. Accelerated Dynamic Magnetic Resonance Imaging: Methods and Applications is an ideal resource for the technologist, clinical researcher and clinician who want to understand rapid MRI methods and gain practical advice on their implementation.

Fast-scan Magnetic Resonance

Author : Felix W. Wehrli
Publisher : Lippincott Williams & Wilkins
Page : 184 pages
File Size : 50,8 Mb
Release : 1991
Category : Medical
ISBN : UOM:39015024793773

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Fast-scan Magnetic Resonance by Felix W. Wehrli Pdf

Computed Tomography & Magnetic Resonance Imaging Of The Whole Body E-Book

Author : John R. Haaga,Daniel Boll
Publisher : Elsevier Health Sciences
Page : 2816 pages
File Size : 40,7 Mb
Release : 2008-12-08
Category : Medical
ISBN : 9780323076210

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Computed Tomography & Magnetic Resonance Imaging Of The Whole Body E-Book by John R. Haaga,Daniel Boll Pdf

Now more streamlined and focused than ever before, the 6th edition of CT and MRI of the Whole Body is a definitive reference that provides you with an enhanced understanding of advances in CT and MR imaging, delivered by a new team of international associate editors. Perfect for radiologists who need a comprehensive reference while working on difficult cases, it presents a complete yet concise overview of imaging applications, findings, and interpretation in every anatomic area. The new edition of this classic reference — released in its 40th year in print — is a must-have resource, now brought fully up to date for today’s radiology practice. Includes both MR and CT imaging applications, allowing you to view correlated images for all areas of the body. Coverage of interventional procedures helps you apply image-guided techniques. Includes clinical manifestations of each disease with cancer staging integrated throughout. Over 5,200 high quality CT, MR, and hybrid technology images in one definitive reference. For the radiologist who needs information on the latest cutting-edge techniques in rapidly changing imaging technologies, such as CT, MRI, and PET/CT, and for the resident who needs a comprehensive resource that gives a broad overview of CT and MRI capabilities. Brand-new team of new international associate editors provides a unique global perspective on the use of CT and MRI across the world. Completely revised in a new, more succinct presentation without redundancies for faster access to critical content. Vastly expanded section on new MRI and CT technology keeps you current with continuously evolving innovations.

Magnetic Resonance Imaging

Author : Robert W. Brown,Y.-C. Norman Cheng,E. Mark Haacke,Michael R. Thompson,Ramesh Venkatesan
Publisher : John Wiley & Sons
Page : 976 pages
File Size : 48,8 Mb
Release : 2014-05-02
Category : Medical
ISBN : 9781118633977

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Magnetic Resonance Imaging by Robert W. Brown,Y.-C. Norman Cheng,E. Mark Haacke,Michael R. Thompson,Ramesh Venkatesan Pdf

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.

Practical Body MRI

Author : David J. Grand,Courtney A. Woodfield,William W. Mayo-Smith
Publisher : Cambridge University Press
Page : 171 pages
File Size : 48,7 Mb
Release : 2012-10-11
Category : Medical
ISBN : 9781107014046

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Practical Body MRI by David J. Grand,Courtney A. Woodfield,William W. Mayo-Smith Pdf

Demystifies MRI exams of the body, explaining everything a radiologist should know to protocol, quality-assess and interpret studies.

Magnetic Resonance Imaging - E-Book

Author : Stewart C. Bushong,Geoffrey Clarke
Publisher : Elsevier Health Sciences
Page : 528 pages
File Size : 46,6 Mb
Release : 2013-08-07
Category : Medical
ISBN : 9780323277655

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Magnetic Resonance Imaging - E-Book by Stewart C. Bushong,Geoffrey Clarke Pdf

Magnetic Resonance Imaging: Physical and Biological Principles, 4th Edition offers comprehensive, well-illustrated coverage on this specialized subject at a level that does not require an extensive background in math and physics. It covers the fundamentals and principles of conventional MRI along with the latest fast imaging techniques and their applications. Beginning with an overview of the fundamentals of electricity and magnetism (Part 1), Parts 2 and 3 present an in-depth explanation of how MRI works. The latest imaging methods are presented in Parts 4 and 5, and the final section (Part 6) covers personnel and patient safety and administration issues. This book is perfect for student radiographers and practicing technologists preparing to take the MRI advanced certification exam offered by the American Registry of Radiologic Technologists (ARRT). "I would recommend it to anyone starting their MRI training and anyone trying to teach MRI to others." Reviewed by RAD Magazine, June 2015 Challenge questions at the end of each chapter help you assess your comprehension. Chapter outlines and objectives assist you in following the hierarchy of material in the text. Penguin boxes highlight key points in the book to help you retain the most important information and concepts in the text. NEW! Two MRI practice exams that mirror the test items in each ARRT category have been added to the end of the text to help you replicate the ARRT exam experience. NEW! Chapter on Partially Parallel Magnetic Resonance Imaging increases the comprehensiveness of the text. NEW! Updated key terms have been added to each chapter with an updated glossary defining each term.

Safety and Biological Effects in MRI

Author : Devashish Shrivastava,J. Thomas Vaughan
Publisher : John Wiley & Sons
Page : 986 pages
File Size : 53,5 Mb
Release : 2020-11-17
Category : Medical
ISBN : 9781118821282

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Safety and Biological Effects in MRI by Devashish Shrivastava,J. Thomas Vaughan Pdf

In vivo magnetic resonance imaging (MRI) has evolved into a versatile and critical, if not ‘gold standard’, imaging tool with applications ranging from the physical sciences to the clinical ‘-ology’. In addition, there is a vast amount of accumulated but unpublished inside knowledge on what is needed to perform a safe, in vivo MRI. The goal of this comprehensive text, written by an outstanding group of world experts, is to present information about the effect of the MRI environment on the human body, and tools and methods to quantify such effects. By presenting such information all in one place, the expectation is that this book will help everyone interested in the Safety and Biological Effects in MRI find relevant information relatively quickly and know where we stand as a community. The information is expected to improve patient safety in the MR scanners of today, and facilitate developing faster, more powerful, yet safer MR scanners of tomorrow. This book is arranged in three sections. The first, named ‘Static and Gradient Fields’ (Chapters 1-9), presents the effects of static magnetic field and the gradients of magnetic field, in time and space, on the human body. The second section, named ‘Radiofrequency Fields’ (Chapters 10-30), presents ways to quantify radiofrequency (RF) field induced heating in patients undergoing MRI. The effect of the three fields of MRI environment (i.e. Static Magnetic Field, Time-varying Gradient Magnetic Field, and RF Field) on medical devices, that may be carried into the environment with patients, is also included. Finally, the third section, named ‘Engineering’ (chapters 31-35), presents the basic background engineering information regarding the equipment (i.e. superconducting magnets, gradient coils, and RF coils) that produce the Static Magnetic Field, Time-varying Gradient Magnetic Field, and RF Field. The book is intended for undergraduate and post-graduate students, engineers, physicists, biologists, clinicians, MR technologists, other healthcare professionals, and everyone else who might be interested in looking into the role of MRI environment on patient safety, as well as those just wishing to update their knowledge of the state of MRI safety. Those, who are learning about MRI or training in magnetic resonance in medicine, will find the book a useful compendium of the current state of the art of the field.

Medical Imaging Systems

Author : Andreas Maier,Stefan Steidl,Vincent Christlein,Joachim Hornegger
Publisher : Springer
Page : 263 pages
File Size : 40,6 Mb
Release : 2018-08-02
Category : Computers
ISBN : 9783319965208

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Medical Imaging Systems by Andreas Maier,Stefan Steidl,Vincent Christlein,Joachim Hornegger Pdf

This open access book gives a complete and comprehensive introduction to the fields of medical imaging systems, as designed for a broad range of applications. The authors of the book first explain the foundations of system theory and image processing, before highlighting several modalities in a dedicated chapter. The initial focus is on modalities that are closely related to traditional camera systems such as endoscopy and microscopy. This is followed by more complex image formation processes: magnetic resonance imaging, X-ray projection imaging, computed tomography, X-ray phase-contrast imaging, nuclear imaging, ultrasound, and optical coherence tomography.

MR Imaging of the Body

Author : Ernst J. Rummeny,Peter Reimer,Walter Heindel
Publisher : Thieme
Page : 704 pages
File Size : 42,7 Mb
Release : 2009
Category : Medical
ISBN : 3131358416

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MR Imaging of the Body by Ernst J. Rummeny,Peter Reimer,Walter Heindel Pdf

This lavishly illustrated book is a comprehensive guide to the basic principles and clinical applications of MR imaging for all regions of the body. It provides clear guidelines on how to perform techniques, select the appropriate contrast media, attain the best images, and analyze the findings.