MRI at a glance / / Catherine Westbrook

• Autore: Westbrook Catherine
• Pubblicazione: Chichester, West Sussex, England : , : John Wiley & Sons, Ltd., , 2016; ©2016
• Edizione: Third edition.
• Descrizione fisica: 1 online resource (xi, 123 pages) : illustrations (chiefly color)
• Disciplina: 616.07548
• Soggetto topico: Magnetic resonance imaging; Medical physics
• Soggetto genere / forma: Electronic books.
• Note generali: Includes index.
• Nota di contenuto: Intro; QR code; TitlePage; Copyright; Preface; Acknowledgement; How to use your textbook; About the companion website; 1 Magnetism and electromagnetism; 2 Atomic structure; 3 Alignment; 4 Precession; 5 Resonance and signal generation; 6 Contrast mechanisms; 7 Relaxation mechanisms; 8 T1 recovery; 9 T2 decay; 10 T1 weighting; 11 T2 weighting; 12 PD weighting; 13 Conventional spin echo; 14 Fast or turbo spin echo - how it works; 15 Fast or turbo spin echo - how it is used; 16 Inversion recovery; 17 Gradient echo - how it works; 18 Gradient echo - how it is used; 19 The steady state ; 20 Coherent gradient echo21 Incoherent gradient echo; 22 Steady-state free precession; 23 Balanced gradient echo; 24 Ultrafast sequences; 25 Diffusion and perfusion imaging; 26 Functional imaging techniques; 27 Gradient functions; 28 Slice selection; 29 Phase encoding; 30 Frequency encoding; 31 K space - what is it?; 32 K space - how is it filled?; 33 K space and image quality; 34 Data acquisition - frequency; 35 Data acquisition - phase; 36 Data acquisition - scan time; 37 K space traversal and pulse sequences; 38 Alternative K space filling techniques; 39 Signal to noise ratio ; 40 Contrast to noise ratio41 Spatial resolution; 42 Chemical shift artefacts; 43 Phase mismapping; 44 Aliasing; 45 Other artefacts; 46 Flow phenomena; 47 Time-of-flight MR angiography; 48 Phase contrast MR angiography; 49 Contrast-enhanced MR angiography; 50 Contrast agents; 51 Magnets; 52 Radiofrequency coils; 53 Gradients and other hardware; 54 MR safety - bio-effects; 55 MR safety - projectiles; Appendix 1(a): The results of optimizing image quality; Appendix 1(b): Parameters and their associated trade-offs; Appendix 2: Artefacts and their remedies; Appendix 3: Main manufacturers' acronyms ; GlossaryIndex; Eula; Magnetic susceptibility; Paramagnetism; Diamagnetism; Ferromagnetism; Electromagnetism; Introduction; Motion within the atom; MR active nuclei; The classical theory; The quantum theory; What do the quantum and classical theories tell us?; Precessional (Larmor) frequency; Precessional phase; Energy absorption; Phase coherence; The MR signal; What is contrast?; Extrinsic contrast parameters; Intrinsic contrast mechanisms; The composition of fat and water; Relaxation processes; Field inhomogeneities; T1 recovery in fat; T1 recovery in water; Control of T1 recovery ; T2 decay in fatT2 decay in water; Control of T2 decay; Typical values; Typical values; Typical values; Other types of weighting; Mechanisms of CSE; Contrast; Typical values; Uses; Mechanism; Contrast; Typical values; Uses; Mechanism; Contrast; Uses; Mechanism; Typical values; Uses; Echo generation in the steady state; Mechanism; Typical values; Uses; Mechanism; Typical values; Uses; Mechanism; Typical values; Uses; Mechanism; Typical values; Uses; Turbo gradient echo; Echo planar imaging; Typical values; Uses; Diffusion weighted imaging; Perfusion imaging; Functional MR imaging (fMRI) ; Spectroscopy
• Titolo autorizzato: MRI at a glance
• ISBN: 1-78785-122-2; 1-119-05354-4; 1-119-05353-6
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910460941503321
• Lo trovi qui: Univ. Federico II
• Serie: At a glance series (Oxford, England)