MRI in Practice / Edition 4

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Overview

Since the first edition was published in 1993, MRI in Practice has become the standard text for radiographers, technologists, radiology residents, radiologists and even sales representatives on the subject of Magnetic Resonance Imaging (MRI). This text is essential reading on undergraduate and postgraduate MRI courses. Furthermore MRI in Practice has come to be known as the number one reference book and study guide in the areas of MR instrumentation, principles, pulse sequences, image acquisition, and imaging parameters for the advanced level examination for MRI offered by the American Registry for Radiologic Technologists (ARRT) in the USA.

The book explains in clear terms the theory that underpins magnetic resonance so that the capabilities and operation of MRI systems can be fully appreciated and maximised. This fourth edition captures recent advances, and coverage includes: parallel imaging techniques and new sequences such as balanced gradient echo.

Building on the success of the first three editions, the fourth edition has been fully revised and updated. The book now comes with a companion website at www.wiley.com/go/mriinpractice which hosts animated versions of a selection of illustrations in the book that are used on the MRI in Practice Course. These animations and accompanying text are aimed at helping the reader’s comprehension of some of the more difficult concepts. The website also hosts over 200 interactive self-assessment exercises to help the reader test their understanding.

MRI in Practice features:

  • Full color illustrations
  • Logical presentation of the theory and applications of MRI
  • A new page design
  • A companion website at www.wiley.com/go/mriinpractice featuring interactive multiple choice questions, short answer questions PLUS animations of more complex concepts from the book

For more information on the MRI in Practice Course and other learning resources by Westbrook and Talbot, please visit www.mrieducation.com

The book contains black-and-white illustrations.

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Editorial Reviews

From the Publisher
“MRI in Practice can be recommdned for all radiologic professionals interested in MR imaging. This is a strong text for the MR student and an updated resource for the MR technologist seeking to refresh imaging concepts and be introduced to new imaging updates.” (Radiologic Technology, 1 March 2012)

"Westbrook (health and social care, Anglia Ruskin U., UK) et al. provide a text on magnetic resonance imaging for radiographers, technologists, radiology residents, undergraduate and graduate students, and radiologists . . . This edition has been revised and updated and has rewritten chapters on encoding and image formation and pulse sequences to include sampling, data acquisition, and the latest sequences." (Book News, 1 August 2011)

Nils Thomas Anderson
This book serves as an educational reference for those interested in magnetic resonance imaging. It contains information on how and why MRI works. The previous edition was published in 1993. The goal of this edition is to provide healthcare practitioners with updated information about how the physics of magnetic resonance are used to acquire diagnostic images. This increased knowledge will help individuals with certification in this field, thus providing better patient care. In my opinion, the goals of the authors have been met. The introductory level of this book makes it a suitable means for a variety of healthcare personnel to increase their knowledge on this sometimes intimidating subject. Anyone associated with the field of radiology could benefit from the information provided by these credible authors. The illustrations serve their purpose, but seem endless. Color may have broken the tedium of so many diagrams. The references are necessary and current. Resources on this topic at this level are limited, increasing the value of this offering. The greatest asset of this text are its completeness and currency. This information is much needed. The way it is formatted here not only makes it available but palatable. This edition is a vast improvement over the previous one and is easily justified. I will make use of it myself and will recommend it to anyone interested in magnetic resonance.
Booknews
A textbook for a graduate course, written by practicing technicians, and useful as well to professionals in medical specialties other than radiology who want a basic knowledge of magnetic-resonance imaging. Discusses such aspects as image weighting and contrast, flow phenomena, instrumentation, and safety. The second edition includes a chapter on advanced techniques and bolsters the chapter on fundamental concepts; first published in 1993. Annotation c. by Book News, Inc., Portland, Or.
Doody's Review Service
Reviewer: Nils Thomas Anderson, RTR (MR)(Froedtert Hospital)
Description: This book serves as an educational reference for those interested in magnetic resonance imaging. It contains information on how and why MRI works. The previous edition was published in 1993.
Purpose: The goal of this edition is to provide healthcare practitioners with updated information about how the physics of magnetic resonance are used to acquire diagnostic images. This increased knowledge will help individuals with certification in this field, thus providing better patient care. In my opinion, the goals of the authors have been met.
Audience: The introductory level of this book makes it a suitable means for a variety of healthcare personnel to increase their knowledge on this sometimes intimidating subject. Anyone associated with the field of radiology could benefit from the information provided by these credible authors.
Features: The illustrations serve their purpose, but seem endless. Color may have broken the tedium of so many diagrams. The references are necessary and current. Resources on this topic at this level are limited, increasing the value of this offering.
Assessment: The greatest asset of this text are its completeness and currency. This information is much needed. The way it is formatted here not only makes it available but palatable. This edition is a vast improvement over the previous one and is easily justified. I will make use of it myself and will recommend it to anyone interested in magnetic resonance.

3 Stars from Doody
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Product Details

  • ISBN-13: 9781444337433
  • Publisher: Wiley
  • Publication date: 7/12/2011
  • Edition number: 4
  • Pages: 456
  • Sales rank: 81,550
  • Product dimensions: 7.40 (w) x 9.40 (h) x 1.00 (d)

Meet the Author

Catherine Westbrook MSc, FHEA, PgC (HE), DCRR, CTCert, is a Senior Lecturer and postgraduate pathway leader at The Faculty of Health & Social Care, Anglia Ruskin University, Cambridge, UK where she is responsible for the postgraduate course in MRI. Catherine is also an independent teaching consultant lecturing on the MRI in Practice Course and other renowned international courses and conferences. She is also the author of Handbook of MRI Technique and MRI at a Glance, both published by Wiley.

Carolyn Kaut Roth RT (R) (MR) (CT) (M) (CV), FSMRT, is the CEO of Imaging Education Associates, Berwyn, Pennsylvania, USA, delivering a wide variety of learning resources in MRI and other imaging modalities.

John Talbot MSc, FHEA, PgC (HE), DCRR, is Senior Lecturer at The Faculty of Health & Social Care,
Anglia Ruskin University, Cambridge, UK, where he is responsible for delivery of undergraduate and postgraduate modules. John is also an independent teaching consultant lecturing on the MRI in Practice Course and developing the companion website animations.

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Table of Contents

Foreword ix

Preface to the Fourth Edition xi

Acknowledgments xiii

Chapter 1 Basic principles 1

Introduction 1

Atomic structure 1

Motion in the atom 2

MR active nuclei 2

The hydrogen nucleus 4

Alignment 4

Precession 8

The Larmor equation 9

Resonance 11

The MR signal 15

The free induction decay signal (FID) 16

Relaxation 16

T1 recovery 16

T2 decay 16

Pulse timing parameters 19

Chapter 2 Image weighting and contrast 21

Introduction 21

Image contrast 21

Contrast mechanisms 22

Relaxation in diff erent tissues 23

T1 contrast 25

T2 contrast 27

Proton density contrast 27

Weighting 29

T2* decay 31

Introduction to pulse sequences 34

Chapter 3 Encoding and image formation 59

Encoding 59

Introduction 59

Gradients 60

Slice selection 62

Frequency encoding 65

Phase encoding 69

Sampling 73

Data collection and image

formation 79

Introduction 79

K space description 80

K space fi lling 81

Fast Fourier transform (FFT) 86

Important facts about K space 90

K space traversal and gradients 96

Options that fill K space 98

Types of acquisition 101

Chapter 4 Parameters and trade-offs 103

Introduction 103

Signal to noise ratio (SNR) 104

Contrast to noise ratio (CNR) 123

Spatial resolution 126

Scan time 131

Trade-offs 134

Decision making 134

Volume imaging 137

Chapter 5 Pulse sequences 140

Introduction 140

Spin echo pulse sequences 141

Conventional spin echo 141

Fast or turbo spin echo 143

Inversion recovery 151

Fast inversion recovery 157

STIR (short tau inversion recovery) 157

FLAIR (fluid attenuated inversion recovery) 159

IR prep sequences 163

Gradient echo pulse sequences 164

Conventional gradient echo 164

The steady state and echo formation 166

Coherent gradient echo 169

Incoherent gradient echo (spoiled) 172

Steady state free precession (SSFP) 175

Balanced gradient echo 179

Fast gradient echo 185

Single shot imaging techniques 186

Parallel imaging techniques 193

Chapter 6 Flow phenomena 198

Introduction 198

The mechanisms of flow 198

Flow phenomena 200

Time of flight phenomenon 200

Entry slice phenomenon 203

Intra-voxel dephasing 206

Flow phenomena compensation 207

Introduction 207

Even echo rephasing 207

Gradient moment rephasing (nulling) 207

Spatial pre-saturation 210

Chapter 7 Artefacts and their compensation 225

Introduction 225

Phase mismapping 225

Aliasing or wrap around 234

Chemical shift artefact 243

Out of phase artefact (chemical misregistration) 244

Truncation artefact 249

Magnetic susceptibility artefact 250

Cross-excitation and cross-talk 252

Zipper artefact 255

Shading artefact 256

Moiré artefact 256

Magic angle 257

Chapter 8 Vascular and cardiac imaging 261

Introduction 261

Conventional MRI vascular imaging techniques 262

Magnetic resonance angiography (MRA) 269

Cardiac MRI 290

Cardiac gating 291

Peripheral gating 298

Pseudo-gating 300

Multiphase cardiac imaging 300

Ciné 301

SPAMM 304

Chapter 9 Instrumentation and equipment 307

Introduction 307

Magnetism 309

Permanent magnets 312

Electromagnets 314

Superconducting electromagnets 317

Fringe fields 321

Shim coils 322

Gradient coils 323

Radio frequency (RF) 330

Patient transportation system 337

MR computer systems and the user interface 337

Chapter 10 MRI safety 341

Introduction 341

Government guidelines 342

Safety terminology 343

Hardware and magnetic field considerations 345

Radio frequency fields 346

Gradient magnetic fields 349

The main magnetic field 351

Projectiles 355

Siting considerations 357

MRI facility zones 358

Safety education 360

Protecting the general public from the fringe field 360

Implants and prostheses 361

Devices and monitors in MRI 367

Pacemakers 367

Patient conditions 368

Safety policy 369

Safety tips 370

Reference 371

Chapter 11 Contrast agents in MRI 372

Introduction 372

Mechanism of action of contrast agents 373

Molecular tumbling 373

Dipole–dipole interactions 375

Magnetic susceptibility 376

Relaxivity 378

Gadolinium safety 380

Other contrast agents 383

Current applications of gadolinium contrast agents 385

Conclusion 393

Chapter 12 Functional imaging techniques 396

Introduction 396

Diff usion weighted imaging (DWI) 397

Perfusion imaging 400

Susceptibility weighting (SWI) 404

Functional imaging (fMRI) 404

Interventional MRI 405

MR spectroscopy (MRS) 407

Whole body imaging 410

MR microscopy (MRM) 411

Glossary 413

Index 427

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Sort by: Showing all of 5 Customer Reviews
  • Anonymous

    Posted January 28, 2014

    This book was not a good book. The book was poorly written. I

    This book was not a good book. The book was poorly written. I had to use Google to be a better understanding on most of the subjects. The book also had several grammar errors. I would not advise a student to use this book.
    I give the book one star

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  • Posted August 20, 2012

    Good starting point for MRI basics.

    Good starting point for MRI basics.

    Was this review helpful? Yes  No   Report this review
  • Anonymous

    Posted October 11, 2012

    No text was provided for this review.

  • Anonymous

    Posted March 24, 2014

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  • Anonymous

    Posted October 1, 2012

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