MRI in Practice / Edition 4by Catherine Westbrook, Carolyn Kaut Roth
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/i>/i>… See more details below
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
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Table of ContentsForeword.
Preface to the Fourth Edition.
Chapter 1 Basic principles.
Motion in the atom.
MR active nuclei.
The hydrogen nucleus.
The Larmor equation.
The MR signal.
The free induction decay signal (FID).
Pulse timing parameters.
Chapter 2 Image weighting and contrast.
Relaxation in different tissues.
Proton density contrast.
Introduction to pulse sequences.
Chapter 3 Encoding and image formation.
Data collection and image formation.
K space description.
K space filling.
Fast Fourier transform (FFT).
Important facts about K space.
K space traversal and gradients.
Options that fill K space.
Types of acquisition.
Chapter 4 Parameters and trade-offs.
Signal to noise ratio (SNR).
Contrast to noise ratio (CNR).
Chapter 5 Pulse sequences.
Spin echo pulse sequences.
Conventional spin echo.
Fast or turbo spin echo.
Fast inversion recovery.
STIR (short tau inversion recovery).
FLAIR (fluid attenuated inversion recovery).
IR prep sequences.
Gradient echo pulse sequences.
Conventional gradient echo.
The steady state and echo formation.
Coherent gradient echo.
Incoherent gradient echo (spoiled).
Steady state free precession (SSFP).
Balanced gradient echo.
Fast gradient echo.
Single shot imaging techniques.
Parallel imaging techniques.
Chapter 6 Flow phenomena.
The mechanisms of flow.
Time of flight phenomenon.
Entry slice phenomenon.
Flow phenomena compensation.
Even echo rephasing.
Gradient moment rephrasing (nulling).
Chapter 7 Artefacts and their compensation.
Aliasing or wrap around.
Chemical shift artefact.
Out of phase artefact (chemical misregistration).
Magnetic susceptibility artefact.
Cross-excitation and cross-talk.
Chapter 8 Vascular and cardiac imaging.
Conventional MRI vascular imaging techniques.
Magnetic resonance angiography (MRA).
Multiphase cardiac imaging.
Chapter 9 Instrumentation and equipment.
Radio frequency (RF).
Patient transportation system.
MR computer systems and the user interface.
Chapter 10 MRI safety.
Hardware and magnetic field considerations.
Radio frequency fields.
Gradient magnetic fields.
The main magnetic field.
MRI facility zones.
Protecting the general public from the fringe field.
Implants and prostheses.
Devices and monitors in MRI.
Chapter 11 Contrast agents in MRI.
Mechanism of action of contrast agents.
Other contrast agents.
Current applications of gadolinium contrast agents.
Chapter 12 Functional imaging techniques.
Diffusion weighted imaging (DWI).
Susceptibility weighting (SWI).
Functional imaging (fMRI).
MR spectroscopy (MRS).
Whole body imaging.
MR microscopy (MRM).
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