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:
Jun. 04, 2002
Filed:
Jan. 05, 2001
Boguslaw Tomanek, Colpany, CA;
Vyacheslav Vlolovskyy, Winnipeg, CA;
National Research Council of Canada, Ottawa, CA;
Abstract
To perform multinuclear magnetic resonance spectroscopy and imaging, a coil with a high signal-to-noise ratio and spatially uniform B field that covers the same volume of interest at several frequencies is preferred. A radio frequency surface coil probe that produces a homogeneous field within the same volume for both P and H is described. The probe provides signal to noise characteristics close to those of a single frequency double ring assembly. It acquired excellent proton images and P spectra from an image selected voxel in rat liver at 7 T. The probe uses a double ring construction where each ring is tuned by a parallel LC trap to two or more different frequencies. A calculation of the values of the inductance and capacitance allows the double coil arrangement to be tuned to the required frequencies with a peak of the homogeneity at each frequency occurring at the same distance from the coil and with good Q. The probe is powered by a driver coil adjacent to the probe by mutual inductance.