Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1997-06-20
1999-12-07
Oda, Christine K
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324307, G01V 300
Patent
active
059989971
ABSTRACT:
Methods and apparatus for characterizing bone mineral characteristics using differential cross polarization magnetic resonance methods are disclosed. According to one embodiment the method includes a step of producing a static magnetic field in a sample that includes first and second spin species where the second spin species has an unknown property. The method also includes a step of producing a state of dipolar order in spins of the first species in the sample. In addition, the method includes providing an RF field in the sample that is resonant with spins of the second species and then shifting the RF field by 180.degree.. Then a signal representative of the unknown property of the second species in the sample may be acquired. Apparatus for performing the above method are also disclosed.
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Ackerman Jerome L.
Ramanathan Chandrasekhar
Fetzner Tiffany A.
Massachusetts Institute of Technology
Oda Christine K
The General Hospital Corp.
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