Principles of Magnetic Resonance Imaging: Physics Concepts, Pulse Sequences, & Biomedical Applications
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Numar articol:191108177
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Preț:627,00 Lei
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Anuntul a expirat la:09.07.2019, 18:11
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Specificatii
Principles of Magnetic Resonance Imaging provides a contemporary
(2016) introduction to the fundamental concepts of MRI and connects
these concepts to the latest MRI developments. Graphic
illustrations are used to visualize the complete solution to the
Bloch Equation and to clarify underlying biophysical processes,
simplified calculations and specific examples are used to add
precision in appreciating abstract concepts, and insightful
interpretations and clinical examples are presented to appreciate
biomedical information in MRI signal. This book contains three
parts: I. Section the body into voxels. Part I describes the
Fourier encoding matrix for an imaging system, realization of
Fourier encoding using the gradient field in magnetic resonance,
and k-space sampling. II. What's in a voxel? Part II examines the
effects of the biophysical processes in a voxel on MRI signal. A
unified distributional evaluation of the phase factor in a voxel
and intuitive biophysical models are developed for MRI signal
dependence on Spin fluctuation in a thermal microenvironment, which
leads to T1/T2 relaxation rates reflecting cellular contents in a
water voxel. Micro- and macro physiological motion, which includes
diffusion, perfusion, flow and biomechanical motion. Molecular
electron response to the B_0 field, which leads to magnetic
susceptibility and chemical shift. The connection of MRI contrast
physics to biomedical applications is visualized in the following
three terms: 1) cellularity for T2 weighted imaging and diffusion
weighted imaging (the latter emphasizing cellular geometry), 2)
vascularity for T1 weighted imaging with Gadolinium injection, MR
perfusion, and MR angiography, and 3) biomolecularity for MR
spectroscopy, and tissue magnetism with emphasis on biometallic
imaging. III. How to operate MRI? Part III describes MRI safety
issues, hardware, software, MRI scanning, and routine MRI
protocols. This MRI book also uses basic concepts to demonstrate
and expose students to the latest technological innovations,
including: B_(1+)and B_(1-) mapping; Chemical exchange saturation
transfer (CEST); Electric property tomography (EPT); Magnetic
particle imaging (MPI); MR elastography (MRE); Moving spin tagging
including ASL, TRUST, SPAMM and DENSE; Navigator motion
compensation; Parallel or accelerated imaging including SENSE,
GRAPPA, compressed sensing, simultaneous multiple slices and other
Bayesian approaches; Quantitative susceptibility mapping (QSM).
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