VHF/RF volume antenna for magnetic resonance imaging including V

Details VHF/RF volume antenna for magnetic resonance imaging including V VHF/RF volume antenna for magnetic resonance imaging including V

1995-03-09

1997-04-15

O'Shea, Sandra L.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324316, G01R 3344, G01R 3362

Patent

active

056213220

ABSTRACT:
A transducer for Overhauser magnetic resonance imaging comprises a cylindrical NMR coil 11 and a two part VHF applicator 12, 13. The applicator and coil are arranged such that the electric field provided by the applicator in use is substantially perpendicular to the coil wires. The VHF applicator is shaped to give a helical field in the region filled by the RF coil, and the RF coil is arranged to be a helix of the opposite handedness. The applicator can comprise a number of similar elements having an electromagnetic resonance mode whose magnetic fled couple to the imaging volume. The elements can be arranged in spirals to form an electric periodic structure.

REFERENCES:
patent: 4973908 (1990-11-01), Bottomley et al.
patent: 5184076 (1993-02-01), Ehnholm
patent: 5357958 (1994-10-01), Kaufman

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