Low Field MRI of Laser Polarized Noble Gas

Details Low Field MRI of Laser Polarized Noble Gas Low Field MRI of Laser Polarized Noble Gas

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aps..cntgp1151w&link_type=abstract

American Physical Society, Centennial Meeting, March 20-26, 1999, Atlanta, GA, Bulletin of the American Physical Society, Vol.

Physics

Scientific paper

We describe a device for magnetic resonance imaging (MRI) of laser polarized noble gas at low magnetic fields (below 100 G). The system is robust, portable, and inexpensive, and provides gas-phase imaging resolution comparable to that of high field commercial instruments (which operate at fields ~ 1 T). At 21 G, we have imaged laser polarized ^3He gas in both sealed glass cells and excised rat lungs. We have also demonstrated the utility of low field noble gas MRI in: (i) reducing magnetic susceptibility effects; and (ii) imaging voids within conductors. We describe practical considerations for working at low magnetic fields, and present measurements of radiation damping of laser polarized ^3He in this system.

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