Switched-field magnetic resonance imaging

Joseph W. Carlson; Larry E. Crooks; M. Arakawa; D. M. Goldhaber; David M. Kramer; Leon Kaufman

doi:10.1117/12.59381

1 June 1992 Switched-field magnetic resonance imaging

Joseph W. Carlson, Larry E. Crooks, M. Arakawa, D. M. Goldhaber, David M. Kramer, Leon Kaufman

Proceedings Volume 1651, Medical Imaging VI: Instrumentation; (1992) https://doi.org/10.1117/12.59381
Event: Medical Imaging VI, 1992, Newport Beach, CA, United States

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.

Citation Download Citation

Joseph W. Carlson, Larry E. Crooks, M. Arakawa, D. M. Goldhaber, David M. Kramer, and Leon Kaufman "Switched-field magnetic resonance imaging", Proc. SPIE 1651, Medical Imaging VI: Instrumentation, (1 June 1992); https://doi.org/10.1117/12.59381

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