The second edition of Rad Tech's Guide to MRI provides practicing and training technologists with a succinct overview of magnetic resonance imaging (MRI). Designed for quick reference and examination preparation, this pocket-size guide covers the fundamental principles of electromagnetism, MRI equipment, data acquisition and processing, image quality and artifacts, MR Angiography, Diffusion/Perfusion, and more.Written by an expert practitioner and educator, this handy reference guide:* Provides essential MRI knowledge in a single portable, easy-to-read guide* Covers instrumentation and MRI hardware components, including gradient and radio-frequency subsystems* Provides techniques to handle flow imaging issues and improve the quality of MRIs* Explains the essential physics underpinning MRI technologyRad Tech's Guide to MRI is a must-have resource for student radiographers, especially those preparing for the American Registry of Radiation Technologist (ARRT) exams, as well as practicing radiology technologists looking for a quick reference guide.

1. Hardware Overview 1Instrumentation: Magnets 1Instrumentation: RF Subsystem 6Instrumentation: Gradient Subsystem 82. Fundamental Principles 11Electromagnetism: Faraday's Law of Induction 11Magnetism 12Behavior of Hydrogen in a Magnetic Field 143. Production of Magnetic Resonance Signal 194. Relaxation and Tissue Characteristics 23T2-Relaxation 23T1-Relaxation 24Proton Density 24T2* (Pronounced "T2 star") 255. Data Acquisition and Image Formation 27Pulse Sequences 27Image Contrast Control 30Image Formation 42Data Acquisition 43Scan Time 50Controlling Image Quality with FSE 576. Magnetic Resonance Image Quality 61Spatial Resolution 61Signal-to-Noise Ratio (SNR) 637. Artifacts 75Chemical Shift (Water and Fat in Different Voxels) 75Chemical Shift (Water and Fat in the Same Voxel) 77Magnetic Susceptibility 79Motion and Flow 81Spatial Presaturation 82Gradient Moment Nulling (Flow Compensation) 84Compensation for Respiration 84Cardiac Compensation 86Aperiodic Motion 88Aliasing 89Gibbs and Truncation Artifact 91Radio-Frequency Artifacts 92Gradient Malfunctions 93Image Shading 93Inadequate System Tuning 94Reconstruction Artifacts 948. Flow Imaging 97Flow Patterns 97Magnetic Resonance Angiography (Non Contrast) 98Reduction of Flow Artifacts 102Signal Loss in MRA 102Two-Dimensional and Three-Dimensional Time-of-Flight 103Signal Loss with Two-Dimensional TOF 104Three-Dimensional TOF 106Signal Loss with Three-Dimensional TOF 108PC Techniques 109Contrast Enhanced MRA (CE-MRA) 1139. Diffusion and Perfusion Imaging 117Diffusion-Weighted Imaging (DWI) 11710. Gadolinium-Based Contrast Agents 125Characteristics, Composition and Structure 125Index 129