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Proceedings Paper

Switched-field magnetic resonance imaging
Author(s): Joseph W. Carlson; Larry E. Crooks; M. Arakawa; D. M. Goldhaber; David M. Kramer; Leon Kaufman
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Paper Abstract

We describe the implementation of a field-cycling electromagnet in a whole-body clinical MRI system. A pulsed magnet is driven on during dead times of the NMR sequence and serves to increase the equilibrium magnetization induced in the patient. Signal transmission and reception occurs only during the period when the electromagnet is turned off and does not otherwise influence the data collection. Applications of the technology include image quality enhancement for low field MRI and for in vivo localized relaxation rate measurements.

Paper Details

Date Published: 1 June 1992
PDF: 6 pages
Proc. SPIE 1651, Medical Imaging VI: Instrumentation, (1 June 1992); doi: 10.1117/12.59381
Show Author Affiliations
Joseph W. Carlson, Univ. of California/San Francisco (United States)
Larry E. Crooks, Univ. of California/San Francisco (United States)
M. Arakawa, Univ. of California/San Francisco (United States)
D. M. Goldhaber, Toshiba America MRI, Inc. (United States)
David M. Kramer, Univ. of California/San Francisco and Toshiba America MRI, Inc. (United States)
Leon Kaufman, Univ. of California/San Francisco (United States)


Published in SPIE Proceedings Vol. 1651:
Medical Imaging VI: Instrumentation
Rodney Shaw, Editor(s)

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