By: Giuseppe Placidi

Hardcover

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MRI: Essentials for Innovative Technologies describes novel methods to improve magnetic resonance imaging (MRI) beyond its current limitations. It proposes smart encoding methods and acquisition sequences to deal with frequency displacement due to residual static magnetic field inhomogeneity, motion, and undersampling. Requiring few or no hardware modifications, these speculative methods offer building blocks that can be combined and refined to overcome barriers to more advanced MRI applications, such as real-time imaging and open systems.

After a concise review of basic mathematical tools and the physics of MRI, the book describes the severe artifacts produced by conventional MRI techniques. It first tackles magnetic field inhomogeneities, outlining conventional solutions as well as a completely different approach based on time-varying gradients and temporal frequency variation coding (acceleration). The book then proposes two innovative acquisition methods for reducing acquisition time, motion, and undersampling artifacts: adaptive acquisition and compressed sensing. The concluding chapter lays out the author's predictions for the future of MRI.

For some of the proposed solutions, this is the first time the reported results have been published. Where experimental data is preliminary or unavailable, the book presents only numerical solutions. Offering insight into emerging MRI techniques, this book provides readers with specialized knowledge to help them design better acquisition sequences and select appropriate correction methods.

The author's proceeds from the sale of this book will be entirely donated to Bambin Gesù Children's Hospital in Rome.

"The deep physical insight into the relationship between spin dynamics and gradient field modulation expressed in this book paves the way to a completely new family of pulse sequences that may represent a new line of development for MRI. As a whole, this excellent book should be found on the bookshelves of all those specializing in the field of magnetic resonance." -From the Foreword by Antonello Sotgiu, Professor and Chairman, Department of Health Sciences, University of L'Aquila, Italy "[This book] is complete, readable and usable both for research and for specialized learning purposes in areas of advanced MRI imaging techniques. Dr. Placidi indicates a path useful to both physicists and engineers for implementation, and to radiologists and clinicians in thinking of possible new ways to apply the suggested methods." -From the Foreword by Roberto Passariello, MD, Professor and Chairman, Department of Radiological Sciences, Policlinico Umberto I, Sapienza University of Rome, Italy

I BASIC CONCEPTS Mathematical Tools Frequency Encoding and Fourier Transform FT Properties Sampling, Interpolation, and Aliasing Instruments for Image Analysis MRI: Conventional Imaging Techniques and Instruments Magnetic Resonance Phenomenon Imaging Gradients Conventional Imaging Techniques Bandwidth, Sampling, Resolution, and Sensitivity An MRI Scanner Bloch Equations and Numerical MRI Simulators II LIMITATIONS OF CONVENTIONAL MRI Limiting Artifacts for Advanced Applications Magnetic Field Inhomogeneity Motion Undersampling Summary III ADVANCED SOLUTIONS Methods for Magnetic Field Inhomogeneity Reduction Introduction Conventional Methods An Unconventional Solution Summary Methods to Handle Undersampling Introduction Sparse Methods without Restoration Sparse Methods with Restoration Summary IV THE FUTURE Conclusions and perspectives Some Hypothesis Bibliography Index

ISBN: 9781439840405
ISBN-10: 1439840407
Audience: Tertiary; University or College
Format: Hardcover
Language: English
Number Of Pages: 216
Published: 2nd May 2012
Dimensions (cm): 23.5 x 15.6  x 1.8
Weight (kg): 0.431