Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1990-03-27
1992-04-21
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
333219, G01R 3320
Patent
active
051072173
ABSTRACT:
A radio frequency antenna for a nuclear magnetic resonance tomography apparatus has interior conductors which form a transmission line resonator with at least one shortening capacitor. The transmission line resonator can resonate at a plurality of resonator frequencies, and a trap circuit is provided for decoupling the interior conductors from the other conductors. The antenna can be operated at a number of different resonate frequencies, for example, at frequency f.sub.1 =170 MHz for protons (hydrogen) and F.sub.2 =69 MHz for phosphorous.
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"The Design and Use of Dual-Frequency Surface Coil Providing Proton Images for Improved Localization in 31P Spectroscopy of Small Leisons", Leach et al., Medical Physics, vol. 13, No. 4, Jul./Aug. 1986, pp. 510-513.
Siemens Aktiengesellschaft
Tokar Michael J.
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