Basics Of Magnetic Resonance Imaging (topics In Neurology)

This book is not intended as a general text on MRI. It is written as an intro­ duction to the field, for nonexperts. We present here a simple exposition of certain aspects of MRI that are important to understand to use this valuable diagnostic tool intelligently in a clinical setting. The basic principles are presented nonmathematically, using no equations and a minimum of symbols and abbreviations. For those requiring a deeper understanding of MRI, this book will help facilitate the transition to standard texts. Chapters 1 through 4 provide a general introduction to the phenomenon of nuclear magnetic resonance and how it is used in imaging. Chapter 1 discus­ ses magnetic resonance, using a compass needle as an example. In Chapter 2, the transition to the magnetic resonance of the atomic nucleus is made. Chapter 3 describes the principles of imaging. In Chapter 4, the terms T 1 and T 2 are described and their relationship to tissue characterization; the fun­ damental role of thermal magnetic noise in T 1 and T 2 is discussed. Front Matter....Pages i-xii Introduction: Diagnostic Probes....Pages 1-6 Magnetic Resonance: A Familiar Example....Pages 7-10 Nuclear Magnetic Resonance....Pages 11-16 Imaging....Pages 17-30 Tissue Characterization: T 1 and T 2 ....Pages 31-50 Tissue Characterization and Pulse Sequencing....Pages 51-87 The MRI Scanner....Pages 89-114 Advantages and Limitations of CT....Pages 115-123 Advantages and Disadvantages of MRI....Pages 125-138 The Future of MRI....Pages 139-142 Back Matter....Pages 143-159