Download or read book Magnetic Resonance Sensors written by Robert H. Morris and published by MDPI. This book was released on 2018-10-04 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Magnetic Resonance Sensors" that was published in Sensors

Download or read book Quantitative Magnetic Resonance Imaging written by Nicole Seiberlich and published by Academic Press. This book was released on 2020-11-18 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Ex situ NMR written by Vasiliki Demas and published by . This book was released on 2006 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Volume selective Magnetic Resonance Imaging Using an Adjustable Single sided Portable Sensor written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Portable, single-sided NMR sensors can operate under conditions inaccessible to conventional NMR while featuring lower cost, portability, and the ability to analyze arbitrary-sized objects. Such sensors can nondestructively probe the interior of samples by collecting images and measuring relaxation and diffusion constants, and, given careful shimming schemes, even perform chemical analysis. The inherently strong magnetic-field gradients of single-sided sensors developed so far has prevented imaging of materials with high water content, such as biological tissues, over large volumes whereas designs with more homogeneous fields suffer from low field strength and typically cannot probe volumes larger than 10 cm3. We present a design with a continuously adjustable sensitive volume, enabling the effective volume to be enlarged several fold. This process allows for imaging in reasonable times of much bigger objects and opens the door to the possibility of clinical imaging with portable sensors. We demonstrate MRI in axial and saggital planes, at different depths of the sensitive volume and T1-weighted contrast in a tissue sample.

Download or read book Ultra Low Field Nuclear Magnetic Resonance written by Robert Henry Kraus (Jr.) and published by Oxford University Press. This book was released on 2014-02 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers topics in NMR/MRI at magnetic fields from milli-Tesla to micro-Tesla, the ultra-low field (ULF) regime, with an emphasis on imaging and understanding the human using its applications. Discussion of hardware considerations, relaxation contrast, imaging, artifact correction, and other applications unique to the ULF regime are presented.

Download or read book Permanent Magnet Based Magnetic Resonance Sensors written by Steven Thomas Parslow and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Design of Micro positioners for Magnetic Resonance Sensors on an Integrated Circuit written by Ivo Kushkiev and published by . This book was released on 2007 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Options for Nuclear Magnetic Resonance NMR Sensors written by Karishma Jain and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Magnetic Sensors for Biomedical Applications written by Hadi Heidari and published by John Wiley & Sons. This book was released on 2019-12-24 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important guide that reviews the basics of magnetic biosensor modeling and simulation Magnetic Sensors for Biomedical Applications offers a comprehensive review of magnetic biosensor modelling and simulation. The authors—noted experts on the topic—explore the model's strengths and weaknesses and discuss the competencies of different modelling software, including homemade and commercial (for example Multi-physics modelling software). The section on sensor materials examines promising materials whose properties have been used for sensing action and predicts future smart-materials that have the potential for sensing application. Next, the authors present classifications of sensors that are divided into different sub-types. They describe their working and highlight important applications that reveal the benefits and drawbacks of relevant designs. The book also contains information on the most recent developments in the field of each sensor type. This important book: Provides an even treatment of the major foundations of magnetic biosensors Presents problem solution methods such as analytical and numerical Explains how solution methods complement each other, and offers information on their materials, design, computer aided modelling and simulation, optimization, and device fabrication Describes modeling work challenges and solutions Written for students in electrical and electronics engineering, physics, chemistry, biomedical engineering, and biology, Magnetic Sensors for Biomedical Applications offers a guide to the principles of biomagnetic sensors, recent developments, and reveals the impact of sensor modelling and simulation on magnetic sensors.

Download or read book Biomedical Sensors written by Deric P. Jones and published by Momentum Press. This book was released on 2010 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sensors are the eyes, ears, and more, of the modern engineered product or system- including the living human organism. This authoritative reference work, part of Momentum Press's new Sensors Technology series, edited by noted sensors expert, Dr. Joe Watson, will offer a complete review of all sensors and their associated instrumentation systems now commonly used in modern medicine. Readers will find invaluable data and guidance on a wide variety of sensors used in biomedical applications, from fluid flow sensors, to pressure sensors, to chemical analysis sensors. New developments in biomaterials- based sensors that mimic natural bio-systems will be covered as well. Also featured will be ample references throughout, along with a useful Glossary and symbols list, as well as convenient conversion tables.

Download or read book Portable Magnetic Resonance Sensors and Methods for Noninvasive Disease Diagnostics written by Ashvin Reddy Bashyam and published by . This book was released on 2019 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many diseases manifest as a shift in fluids between distinct tissue fluid compartments. For example, fluid depletion and fluid overload lead to a deficit or accumulation of fluids within the intramuscular interstitial space. A direct measurement of these fluid shifts could serve as a highly specific diagnostic or prognostic tool to improve clinical management of these disorders. Proton magnetic resonance is exquisitely sensitive to the local physical and chemical environment of water molecules within the body. Therefore, we hypothesized that localized magnetic resonance (MR) measurements could interrogate local tissue fluid distributions and assess systemic fluid volume status. This thesis explored the potential for a portable MR sensor to characterize shifts in tissue fluid distribution and identify the onset and progression of fluid volume status disorders. First, we designed a portable, single sided MR sensor capable of performing remote measurements of the multicomponent T2 signal originating from distinct fluid compartments. Further, we present a design framework to create single sided sensors with magnetic field strength and geometry suitable for a wide range of applications. We then demonstrate that a localized measure of tissue fluid distribution using a portable MR sensor is capable of identifying systemic changes in fluid volume status associated with fluid depletion. We validate these findings via whole animal MR measurements and a standard MRI scanner capable of localizing its measurement towards the muscle tissue. Finally, we explore new strategies to enable the translation of these portable MR sensors towards humans. We demonstrate techniques combining multicomponent T2 relaxometry, depth-resolved measurements, and diffusion-weighted pulse sequences to improve identification of fluid shifts within muscle tissue despite the presence of confounding tissues, such as the subcutaneous tissue. The magnetic resonance sensors and measurement techniques developed here lay the foundations for a non-invasive, portable, and quantitative indicator of tissue fluid distribution. This technology has the potential to serve as a clinical diagnostic for both localized and systemic fluid imbalances. Furthermore, these approaches enabling portable, quantitative MR measurements can be extended to the diagnosis and staging of the progression of other diseases which exhibit shifts in fluid distributions.

Download or read book High Sensitivity Magnetometers written by Asaf Grosz and published by Springer. This book was released on 2016-09-20 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers, for the first time, an overview of nearly all of the magnetic sensors that exist today. The book is offering the readers a thorough and comprehensive knowledge from basics to state-of-the-art and is therefore suitable for both beginners and experts. From the more common and popular AMR magnetometers and up to the recently developed NV center magnetometers, each chapter is describing a specific type of sensor and providing all the information that is necessary to understand the magnetometer behavior including theoretical background, noise model, materials, electronics, design and fabrication techniques, etc.

Download or read book Nuclear Magnetic Resonance Sensors Methods for Volume Status Monitoring written by Christopher John Frangieh and published by . This book was released on 2019 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Portable, non-invasive sensors of tissue fluid distribution would aid in diagnosis of fluid volume disorders and inform therapeutic decisions across diverse patient populations. Existing techniques are inaccurate, invasive, or easily confounded by patient physiology. Single-sided magnetic resonance (MR) devices could provide a portable, low-cost platform for localized measurements of fluid distribution. This thesis demonstrates a single-sided MR sensor that can quantify fluid distribution of heterogeneous samples via depth-resolved, diffusion-weighted, multicomponent T2 relaxometry. Validation using synthetic tissue phantoms, ex vivo tissue samples, and an in vivo edema model is presented. Estimation of tissue fractions in heterogeneous samples with 2% error and tissue layer thickness with 0.1 mm error is demonstrated. The sensor can identify onset, progression, and recovery of muscle edema despite the presence of a confounding subcutaneous tissue layer. These methods can provide point-of-care diagnostics for fluid distribution disorders such as end-stage renal disease and dehydration.

Download or read book Nuclear Magnetic Resonance Sensors and Methods for Chemical Sensing in Tissue written by Ashvin Reddy Bashyam and published by . This book was released on 2016 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid, sensitive, and minimally invasive sensing of metabolites, chemicals, and biological molecules within tissue is a largely unsolved problem. Sensing molecular oxygen, pH, and water content is of particular interest as they have been shown to be useful for improving disease diagnosis and treatment monitoring in a diverse range of medical fields including trauma, solid tumor cancers, tissue grafts, wound healing, dehydration, athletic performance, and congestive heart failure. Nuclear magnetic resonance (NMR) offers a non-ionizing, rapid, repeatable, and molecularly sensitive measurement technique for chemical sensing. Existing hardware for highly versatile single sided measurement systems is insufficient for clinical use due to constraints on the size and shape of samples that can be measured, inadequate magnetic field performance, and low sensitivity. This thesis describes the development of a portable, single-sided NMR system for research and clinical use. A magnet assembly based on a linear Halbach array was developed to produce a large, remote, and uniform field. Suitable impedance matching circuitry was designed and constructed to efficiently transmit signals between NMR probes and a radiofrequency spectrometer. This system is suitable for use in NMR measurement within a clinical environment.

Download or read book Magnetic Resonance Imaging written by V. Rajinikanth and published by Academic Press. This book was released on 2022-02-15 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic Resonance Imaging: Recording, Reconstruction and Assessment gives a detailed overview of magnetic resonance imaging (MRI), along with its applications and challenges. The book explores the abnormalities in internal human organs using MRI techniques while also featuring case studies that illustrate measures used. In addition, it explores precautionary measures used during MRI based imaging, the selection of appropriate contrast agents, and the selection of the appropriate modality during the image registration. Sections introduce medical imaging, the use of MRI in brain, cardiac, lung and kidney detection, and also discuss both 2D and 3D imaging techniques and various MRI modalities. This volume will be of interest to researchers, engineers and medical professionals involved in the development and use of MRI systems. - Discusses challenges and issues faced, as well as safety precautions to be followed - Features case studies with benchmark MRIs existing in the literature - Introduces computer-based assessment (Machine Learning and Deep Learning) of the MRI based on its 2D slices

Download or read book Magnetic Sensors and Magnetometers Second Edition written by Pavel Ripka and published by Artech House. This book was released on 2021-07-31 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This completely updated second edition of an Artech House classic covers industrial applications and space and biomedical applications of magnetic sensors and magnetometers. With the advancement of smart grids, renewable energy resources, and electric vehicles, the importance of electric current sensors increased, and the book has been updated to reflect these changes. Integrated fluxgate single-chip magnetometers are presented. GMR sensors in the automotive market, especially for end-of-shaft angular sensors, are included, as well as Linear TMR sensors. Vertical Hall sensors and sensors with integrated ferromagnetic concentrators are two competing technologies, which both brought 3-axial single-chip Hall ICs, are considered. Digital fluxgate magnetometers for both satellite and ground-based applications are discussed. All-optical resonant magnetometes, based on the Coherent Population Trapping effect, has reached approval in space, and is covered in this new edition of the book. Whether you're an expert or new to the field, this unique resource offers you a thorough overview of the principles and design of magnetic sensors and magnetometers, as well as guidance in applying specific devices in the real world. The book covers both multi-channel and gradiometric magnetometer systems, special problems such as cross-talk and crossfield sensitivity, and comparisons between different sensors and magnetometers with respect to various application areas. Miniaturization and the use of new materials in magnetic sensors are also discussed. A comprehensive list of references to journal articles, books, proceedings and webpages helps you find additional information quickly.