MRI in Practice

ISBN-10: 1444337432
ISBN-13: 9781444337433
Edition: 4th 2011
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Description: Since the first edition was published in 1993, the book has become the standard text for radiographers, technologists, radiology residents, radiologists and even sales representatves on the subject of magnetic resonance imaging. This text is  More...

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Book details

List price: $60.99
Edition: 4th
Copyright year: 2011
Publisher: John Wiley & Sons, Incorporated
Publication date: 7/5/2011
Binding: Paperback
Pages: 456
Size: 7.50" wide x 9.50" long x 1.00" tall
Weight: 2.398
Language: English

Since the first edition was published in 1993, the book has become the standard text for radiographers, technologists, radiology residents, radiologists and even sales representatves on the subject of magnetic resonance imaging. This text is essential reading on postgraduate 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 third 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. It also now has a companion website which hosts animated versions of a selection of illustrations in the book to aid with 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.

Foreword
Preface to the Fourth Edition
Acknowledgments
Basic principles
Introduction
Atomic structure
Motion in the atom
MR active nuclei
The hydrogen nucleus
Alignment
Precession
The Larmor equation
Resonance
The MR signal
The free induction decay signal (FID)
Relaxation
T1 recovery
T2 decay
Pulse timing parameters
Image weighting and contrast
Introduction
Image contrast
Contrast mechanisms
Relaxation in diff erent tissues
T1 contrast
T2 contrast
Proton density contrast
Weighting
T2* decay
Introduction to pulse sequences
Encoding and image formation
Encoding
Introduction
Gradients
Slice selection
Frequency encoding
Phase encoding
Sampling
Data collection and image
Formation
Introduction
K space description
K space fi lling
Fast Fourier transform (FFT)
Important facts about K space
K space traversal and gradients
Options that fill K space
Types of acquisition
Parameters and trade-offs
Introduction
Signal to noise ratio (SNR)
Contrast to noise ratio (CNR)
Spatial resolution
Scan time
Trade-offs
Decision making
Volume imaging
Pulse sequences
Introduction
Spin echo pulse sequences
Conventional spin echo
Fast or turbo spin echo
Inversion recovery
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
Flow phenomena
Introduction
The mechanisms of flow
Flow phenomena
Time of flight phenomenon
Entry slice phenomenon
Intra-voxel dephasing
Flow phenomena compensation
Introduction
Even echo rephasing
Gradient moment rephasing (nulling)
Spatial pre-saturation
Artefacts and their compensation
Introduction
Phase mismapping
Aliasing or wrap around
Chemical shift artefact
Out of phase artefact (chemical misregistration)
Truncation artefact
Magnetic susceptibility artefact
Cross-excitation and cross-talk
Zipper artefact
Shading artefact
Moir� artefact
Magic angle
Vascular and cardiac imaging
Introduction
Conventional MRI vascular imaging techniques
Magnetic resonance angiography (MRA)
Cardiac MRI
Cardiac gating
Peripheral gating
Pseudo-gating
Multiphase cardiac imaging
Cin�
SPAMM
Instrumentation and equipment
Introduction
Magnetism
Permanent magnets
Electromagnets
Superconducting electromagnets
Fringe fields
Shim coils
Gradient coils
Radio frequency (RF)
Patient transportation system
MR computer systems and the user interface
MRI safety
Introduction
Government guidelines
Safety terminology
Hardware and magnetic field considerations
Radio frequency fields
Gradient magnetic fields
The main magnetic field
Projectiles
Siting considerations
MRI facility zones
Safety education
Protecting the general public from the fringe field
Implants and prostheses
Devices and monitors in MRI
Pacemakers
Patient conditions
Safety policy
Safety tips
Reference
Contrast agents in MRI
Introduction
Mechanism of action of contrast agents
Molecular tumbling
Dipole�dipole interactions
Magnetic susceptibility
Relaxivity
Gadolinium safety
Other contrast agents
Current applications of gadolinium contrast agents
Conclusion
Functional imaging techniques
Introduction
Diff usion weighted imaging (DWI)
Perfusion imaging
Susceptibility weighting (SWI)
Functional imaging (fMRI)
Interventional MRI
MR spectroscopy (MRS)
Whole body imaging
MR microscopy (MRM)
Glossary
Index

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