Rad Tech’s Guide to MRI : Basic Physics, Instrumentation, and Quality Control.

Description

Title Page Contents 1 Hardware Overview Instrumentation: Magnets Instrumentation: Radio-Frequency Subsystem Instrumentation: Gradient Subsystem 2 Fundamental Principles Electromagnetism: Faraday's Law of Induction Magnetism Behavior of Hydrogen in a Magnetic Field. 3 Production of Magnetic Resonance Signal 4 Relaxation 5 Tissue Characteristics Proton Density T2 Relaxation T1 Relaxation 6 Data Acquisition and Image Formation Pulse Sequences Image Contrast Control Image Formation Data Acquisition Scan Time. Controlling Image Quality with Fast Spin Echo 7 Magnetic Resonance Image Quality Spatial Resolution Signal-to-Noise 8 Artifacts Chemical Shift Chemical Shift of the Second Kind Magnetic Susceptibility Motion and Flow Spatial Presaturation Gradient Moment Nulling. Compensation for Respiration Cardiac Compensation Aperiodic Motion Aliasing Gibbs and Truncation Artifact Radio-Frequency Artifacts Gradient Malfunctions Image Shading Inadequate System Tuning Reconstruction Artifacts 9 Flow Imaging Flow Patterns. Magnetic Resonance Angiography Reduction of Flow Artifacts Signal Loss in MRA Two-Dimensional and Three-Dimensional Time-of-Flight Signal Loss with Two-Dimensional Time-of-Flight Three-Dimensional Time-of-Flight Signal Loss with Three-Dimensional Time-of-Flight.