Measuring bone mineral characteristics using differential cross polarization and adiabatic demagnetization in a rotating frame with magnetic resonance
US5998997A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 20, 1997 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Jun 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4641
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.