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:
Feb. 18, 2003
Filed:
Sep. 17, 1999
Hiroyuki Fujita, Highland Heights, OH (US);
William O. Braum, Twinsburg, OH (US);
Koninklijke Philips Electronics, N. V., Eindhoven, NL;
Abstract
A magnetic resonance apparatus includes a main magnetic field source ( ) for providing a magnetic field (B ) along a main field axis. A transmitter ( ) and transmit coils ( ) excite a nuclei of an object to resonate. The resonating nuclei generate magnetic resonance signals detected by a volume coil ( ) including a pair of end rings ( ) separated along a coil axis (Y). The end rings ( ) are electrically interconnected by a plurality of rungs ( ) disposed about the rings. A conductive loop ( ) is concentrically disposed between and inductively coupled to the end rings. The loop includes an electrical conductor ( ) preferably surrounding the rungs ( ), and positioned parallel to the end rings ( ). A capacitive element ( ), in electrical communication with the conductor ( ), is selected or adjusted to tune the loop ( ) to signals at a selected frequency. Moreover, the loop ( ) is slidably positionable along the coil axis (Y) and has an adjustable capacitor ( ) to match or tune the loop to signals at the selected frequency.