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Multidimensional Imaging Using Combined Stray Field and Pulsed Gradients

✍ Scribed by J. Godward; E. Ciampi; M. Cifelli; P.J. McDonald

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
195 KB
Volume
155
Category
Article
ISSN
1090-7807

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✦ Synopsis

The paper describes an advance in stray field imaging (STRAFI) whereby images of planar samples can be obtained in the stray field of a superconducting magnet without the need for sample rotation. This is achieved by using the static stray magnetic field gradient in combination with pulsed orthogonal gradients. Results of both twoand three-dimensional implementations of the experiment are presented and discussed. An extension to diffusion-weighted imaging is introduced. The technique is expected to prove particularly useful in experiments where high resolution is required in only one direction while lower resolution is acceptable in the orthogonal directions, such as in studies of the drying and curing of paints and varnishes. Arising from the work, a new method for accurately calibrating the radiofrequency pulse width in stray field is found.

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