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:
Aug. 20, 1991
Filed:
Jan. 16, 1990
Applicant:
Inventors:
James S Tropp, Berkeley, CA (US);
Kevin A Derby, San Bruno, CA (US);
Assignee:
Toshiba America MRI, Inc., So. San Francisco, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324318 ; 324322 ;
Abstract
A hybrid bird cage/Helmholtz RF coil provides a single composite RF coil for MRI spectroscopy involving at least two NMR nuclear species at respectively different RF frequencies. The bird cage portion may be tuned to the lower NMR frequency and coupled to a pair of quadrature-phase input/output ports so as to provide needed extra sensitivity and signal-to-noise ratio. At least one further RF input/output port provides coupling for a second, higher, MNR RF frequency.