MRI in Practice 5th Edition at Meripustak

MRI in Practice 5th Edition

Books from same Author: Talbot J

Books from same Publisher: John Wiley And Sons

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  • General Information  
    Author(s)Talbot J
    PublisherJohn Wiley And Sons
    Edition5th Edition
    ISBN9781119391968
    Pages416
    BindingSoftbound
    LanguageEnglish
    Publish YearSeptember 2018

    Description

    John Wiley And Sons MRI in Practice 5th Edition by Talbot J

    MRI in Practice continues to be the number one reference book and study guide for the registry review examination for MRI offered by the American Registry for Radiologic Technologists (ARRT).  This latest edition offers in-depth chapters covering all core areas, including: basic principles, image weighting and contrast, spin and gradient echo pulse sequences, spatial encoding, k-space, protocol optimization, artefacts, instrumentation, and MRI safety.

    - The leading MRI reference book and study guide.
    - Now with a greater focus on the physics behind MRI.
    - Offers, for the first time, equations and their explanations and scan tips.
    - Brand new chapters on MRI equipment, vascular imaging and safety.
    - Presented in full color, with additional illustrations and high-quality MRI images to aid understanding.
    - Includes refined, updated and expanded content throughout, along with more learning tips and practical applications.
    - Features a new glossary.

    MRI in Practice is an important text for radiographers, technologists, radiology residents, radiologists, and other students and professionals working within imaging, including medical physicists and nurses.

    TABLE OF CONTENTS


    Preface to the Fifth Edition ix         
    Acknowledgments xi
    List of Acronyms xiii
    Equation symbols xvii
    About the Companion Website xix

    Chapter 1 Basic principles  1        
    Introduction 1     
    Atomic structure 2            
    Motion in the atom 2       
    MR active nuclei 4             
    The hydrogen nucleus 5
    Alignment 6
    Net magnetic vector (NMV) 8      
    Precession and precessional (Larmor) frequency 10
    Precessional phase 13        
    Resonance 13        
    MR signal 18
    The free Induction decay(FDI) signal 20
    Pulse timing parameters 22

    Chapter 2 Image weighting and contrast 24             
    Introduction 24
    Image contrast  25
    Relaxation 25
    T1 recovery 26
    T2 decay 27
    Contrast mechanisms 31   
    Relaxation in different tissues 32  
    T1 contrast 36       
    T2 contrast 40       
    Proton density contrast 41
    Weighting 42         
    Other contrast mechanisms 51

    Chapter 3 Spin echo pulse sequences 58  
    Introduction 58    
    RF rephasing 59
    Conventional spin echo 65
    Fast or turbo spin echo FSE/TSE) 68
    Inversion recovery (IR) 78
    Short tau inversion recovery (STIR) 82
    Fluid attenuated inversion recovery (FLAIR) 84

    Chapter 4 Gradient echo pulse sequences 89
    Introduction 89
    Variable flip angle 90
    Gradient rephasing 91
    Weighting in gradient echo pulse sequences 94
    Coherent or rewound gradient echo 106
    Incoherent or spoiled gradient echo 109  
    Reverse-echo gradient echo 113    
    Balanced gradient echo 119
    Fast gradient echo 122
    Echo planar imaging (EPI) 122           

    Chapter 5 Spatial encoding 128        
    Introduction 128
    Mechanism of gradients 129             
    Gradient axes 134
    Slice-selection 135 
    Frequency encoding 142     
    Phase encoding 145  
    Bringing it all together – pulse sequence timing 152

    Chapter 6 k-space 158 
    Introduction 158     
    Part 1 – what is k-space? 159
    Part 2 - how are data acquired and how are images created from this data? 165
    Part 3 –some important facts about k-space 184
    Part 4: how do pulse sequences fill k-space? 197
    Part 5: options that fill k-space 199

    Chapter 7 Protocol optimization 209              
    Introduction 209
    Signal-to-noise ratio (SNR) 210          
    Contrast-to-noise ratio (CNR) 226 
    Spatial resolution 232            
    Scan time 237         
    Trade-offs 238         
    Protocol development and modification 238

    Chapter 8 Artefacts 242      
    Introduction 242
    Phase mismapping 243      
    Aliasing 253
    Chemical shift artefact 261 
    Out-of-phase signal cancellation 265
    Magnetic susceptibility artefact 269
    Truncation artefact 272       
    Cross-excitation/cross-talk 273        
    Zipper artefact  275
    Shading artefact 276             
    Moiré artefact 277 
    Magic angle 279
    Equipment faults 280            
    Flow artefacts 280
    Flow-dependent (non-contrast enhanced) angiography 298
    Black-blood imaging 303
    Phase contrast MRA 304

    Chapter 9 Instrumentation 311
    Introduction 311
    Magnetism 313
    Scanner configurations 315
    Magnet system 318
    Magnet shielding 326
    Shim system 328
    Gradient system 330
    RF system 337
    Patient transport system 343
    Computer system and graphic user interface 344

    Chapter 10 MRI safety 346  
    Introduction (and disclaimer) 346
    Definitions used in MRI safety 347
    Psychological effects 350
    The spatially-varying static field 351
    Electromagnetic (radiofrequency) fields 357
    Time-Varying Gradient Magnetic Fields 363
    Cryogens 365
    Safety tips 367
    Additional resources 368
    Glossary 370             

    Index 387