The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1999
Filed:
Jun. 20, 1997
Chandrasekhar Ramanathan, Boston, MA (US);
Jerome L Ackerman, Newton, MA (US);
The General Hospital Corp., Charlestown, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
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.