MRI at a Glance

by Westbrook, Catherine

• ISBN13: 9781405192552
• ISBN10: 1405192550
• Edition: 2nd
• Format: Paperback
• Copyright: 2009-11-09
• Publisher: Wiley-Blackwell

Summary

MRI at a Glance provides concise, easily accessible information on MRI physics and is an invaluable revision aid. All topics are included from magnetism to safety, K space to pulse sequences, image contrast to artefacts. The second edition has been fully revised and updated with brand new information on data acquisition and pulse sequences. The book is now in full colour throughout and follows the familiar, easy-to-use at a Glance format with each topic presented as a double-page spread with key facts accompanied by clear diagrams encapsulating essential knowledge.

Author Biography

Catherine Westbrook MSc DCRR PgC (L&T) CTCert FHEA, is a senior lecturer and post-graduate pathway leader at the Faculty of Health & Social Care, Anglia Ruskin University Cambridge where she is responsible for post-graduate courses in MRI, CT, Radiography and Radiotherapy. Cathy is also an independent teaching consultant providing teaching and assessment in MRI and radiographic related subjects to clients all over the world.

Table of Contents

Preface

Acknowledgements and Dedication

Magnetism and electromagnetism

Atomic structure

Alignment and precession

Resonance and signal generation

Contrast mechanisms

Relaxation mechanisms

T1 recovery

T2 decay

T1 weighting

T2 weighting

Proton density weighting

Pulse sequence mechanisms

Conventional spin echo

Fast or turbo spin echo - how it works

Fast or turbo spin echo - how it's used

Inversion recovery

Gradient echo - how it works

Gradient echo - how it's used

The steady state

Coherent gradient echo

Incoherent gradient echo

Steady-state free precession

Balanced gradient echo

Ultrafast sequences

Diffusion and perfusion imaging

Functional imaging techniques

Gradient functions

Slice selection

Phase encoding

Frequency encoding

K space - what is it?

K space - how is it filled?

K space filling and signal amplitude

K space filling and spatial resolution

Data acquisition and frequency encoding

Data acquisition and phase encoding

Data acquisition and scan time

K space traversal and pulse sequences

Alternative K-space filling techniques

Signal to noise ratio

Contrast to noise ratio

Spatial resolution

Scan time

Trade-offs

Chemical shift

Out-of-phase artefact

Magnetic susceptibility

Phase wrap/aliasing 94

Phase mismapping (motion artefact)

Flow phenomena

Time-of-flight MR angiography

Phase contrast MR angiography

Contrast enhanced MR angiography

Contrast media

Magnets

Gradients

Radiofrequency coils

Other hardware

Bioeffects

Projectiles

Screening and safety procedures

Emergencies in the MR environment

Glossary

Index

Table of Contents provided by Publisher. All Rights Reserved.