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NMR Imaging of Materials$
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Bernhard Blumich

Print publication date: 2003

Print ISBN-13: 9780198526766

Published to Oxford Scholarship Online: January 2010

DOI: 10.1093/acprof:oso/9780198526766.001.0001

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Basic imaging methods

Basic imaging methods

Chapter:
(p.199) 6 Basic imaging methods
Source:
NMR Imaging of Materials
Author(s):

Bernhard Blümich

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198526766.003.0006

The basic imaging methods of nuclear magnetic resonance (NMR) are applicable primarily to imaging of liquids and soft matter, where lines are narrow and spectral dispersion is small compared to the frequency dispersion introduced by application of magnetic field gradients. The primary incentive for development of these methods comes from applications in medicine and biology, where the dominant signal is most often from water. Practically, all of these methods are designed to scan k space as completely as possible, so that the image is obtained by Fourier transformation of the k-space signal. Backprojection methods scan k space in cylindrical or spherical coordinates, and most other methods provide a k space signal in Cartesian coordinates. This chapter looks at basic NMR imaging methods including reconstruction from projections, Fourier imaging, spin-warp technique, multi-slice imaging, 3D imaging, spectroscopic imaging, stimulated-echo imaging, gradient-echo imaging, ultra-fast imaging, imaging in the rotating frame, and imaging with noise excitation.

Keywords:   nuclear magnetic resonance imaging, k space, backprojection methods, Fourier imaging, spin-warp technique, multi-slice imaging, gradient-echo imaging, spectroscopic imaging, rotating frame, noise excitation

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