Artifacts and Technical Solutions in MR Diagnostic Imaging


Book Description

This book is for all those professionals directly or indirectly working in magnetic resonance, and arises from the need to have available a complete and comprehensible guide, in order to recognize, construe and work out almost all the artifacts that can currently be observed in the supplied scanners, being low-field, mid-field, high-field or ultra-high-field. The content includes many demonstrative images and few mathematical formula, moreover simple to be construed, in order to make easily comprehensible the complex mechanisms hidden behind MR Physics, connected to the artifact under consideration. The text presents a basic introduction to the magnetic resonance and a glossary of used acronyms, so that the principles related to k-space, impulse sequences and relaxation times are clearly understood. Artifacts are effectively classified in chapters and subchapters, according to the underlying cause generating them. Each artifacts group is dealt with following a logic providing for: -Introduction to the specific artifact-related technique.-Modes by which the artifact shows itself, on the basis of images and text.-Technical solutions suited to the resolutions.-Online examinations, videos, focuses, overview tables with access linked to the credentials obtained when purchasing the original text. MRI Technologist Dr. Luca Bartalini




Essentials of MRI Safety


Book Description

Essentials of MRI Safety is a comprehensive guide that enables practitioners to recognise and assess safety risks and follow appropriate and effective safety procedures in clinical practice. The text covers all the vital aspects of clinical MRI safety, including the bio-effects of MRI, magnet safety, occupational exposure, scanning passive and active implants, MRI suite design, institutional governance, and more. Complex equations and models are stripped back to present the foundations of theory and physics necessary to understand each topic, from the basic laws of magnetism to fringe field spatial gradient maps of common MRI scanners. Written by an internationally recognised MRI author, educator, and MRI safety expert, this important textbook: Reflects the most current research, guidelines, and MRI safety information Explains procedures for scanning pregnant women, managing MRI noise exposure, and handling emergency situations Prepares candidates for the American Board of MR Safety exam and other professional certifications Aligns with MRI safety roles such as MR Medical Director (MRMD), MR Safety Officer (MRSO) and MR Safety Expert (MRSE) Contains numerous illustrations, figures, self-assessment tests, key references, and extensive appendices Essentials of MRI Safety is an indispensable text for all radiographers and radiologists, as well as physicists, engineers, and researchers with an interest in MRI.




Questions & Answers in Magnetic Resonance Imaging


Book Description

The popular QUESTIONS AND ANSWERS IN MAGNETIC RESONANCE IMAGING is thoroughly revised and updated to reflect the latest advances in MRI technology. Four new chapters explain recent developments in the field in the traditional question and short answer format. This clear, concise and informative text discusses hundreds of the most common questions about MRI, as well as some challenging questions for seasoned MRI specialists. Covers the technical aspects of MRI, including physical principles, hardware, image production, artifacts, contrast agents, techniques, echo imaging, biological effects and safety, flow phenomena and angiography. Explains and reinforces the basic understanding of magnetic resonance physics. Includes material that is highly practical and immediately applicable to clinical MRI. Thoroughly revised and updated to reflect the latest advances in MRI technology. A 30 percent increase in content provides increased coverage of key topics. Includes four new chapters: MR Spectroscopy, Functional MRI, Diffusion/Perfusion Imaging, Echo-Planar Imaging, and an appendix on Sedation.




Pitfalls in Diagnostic Radiology


Book Description

The practice of diagnostic radiology has become increasingly complex, with the use of numerous imaging modalities and division into many subspecialty areas. It is becoming ever more difficult for subspecialist radiologists, general radiologists, and residents to keep up with the advances that are occurring year on year, and this is particularly true for less familiar topics. Failure to appreciate imaging pitfalls often leads to diagnostic error and misinterpretation, and potential medicolegal problems. This textbook, written by experts from reputable centers across the world, systematically and comprehensively highlights the pitfalls that may occur in diagnostic radiology. Both pitfalls specific to different modalities and techniques and those specific to particular organ systems are described with the help of numerous high-quality illustrations. Recognition of these pitfalls is crucial in helping the practicing radiologist to achieve a more accurate diagnosis.




An Encyclopedia Of Concepts In MRI Safety


Book Description

An Encyclopedia of Concepts In MRI Safety provides a concise reference summarizing in encyclopedia form the wide range of knowledge required to understand the field of MRI safety. The work is designed with the MRSO, MRMD, and MRSE certifications of the American Board of MR Safety in mind. Most entries provide general information relevant to all three certifications with additional information suitable for the MRMD or MRSE marked as such following the general entry. Example problems are given in many entries. Extensive literature references are also provided.




Fluorine Magnetic Resonance Imaging


Book Description

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.




MRI from Picture to Proton


Book Description

Presents the basics of MR practice and theory as the practitioner first meets them.




MRI in Practice


Book Description

MRI in Practice continues to be the number one reference book and study guide for the registry review examination for MRI offered by the American Registry for Radiologic Technologists (ARRT). This latest edition offers in-depth chapters covering all core areas, including: basic principles, image weighting and contrast, spin and gradient echo pulse sequences, spatial encoding, k-space, protocol optimization, artefacts, instrumentation, and MRI safety. The leading MRI reference book and study guide. Now with a greater focus on the physics behind MRI. Offers, for the first time, equations and their explanations and scan tips. Brand new chapters on MRI equipment, vascular imaging and safety. Presented in full color, with additional illustrations and high-quality MRI images to aid understanding. Includes refined, updated and expanded content throughout, along with more learning tips and practical applications. Features a new glossary. MRI in Practice is an important text for radiographers, technologists, radiology residents, radiologists, and other students and professionals working within imaging, including medical physicists and nurses.




Magnetic Resonance Imaging


Book Description

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.




Medical Imaging Systems


Book Description

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.