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:
Jan. 03, 2006
Filed:
Oct. 17, 2002
Eerke Holle, Eindhoven, NL;
Eerke Holle, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A radio-frequency coil (RF-coil) () for use in a magnetic-resonance imaging apparatus comprises a number of parallel bar-shaped electric conductors () arranged at regular intervals on an imaginary cylinder () and surrounded by a radio-frequency shield (RF-shield) (). The bar-shaped conductors surround a measuring volume () and are interconnected at least at one of their end portions () by an electric end conductor () extending in a plane transverse to the bar-shaped conductors. A further electric end conductor () is arranged near and parallel to the end conductor (), and is electrically connected to the RF-shield (), preferably by a flange-shaped electric conductor (). The end conductor () and the further end conductor () together form a transmission line. An unwanted electromagnetic field (b) generated by current in the end conductor () is compensated for by an electromagnetic field (b) generated by the current in the further end conductor (). Thus, the electromagnetic field of the end conductor () does not lead to unwanted dissipation effects and temperature increases in the body of a patient present in the measuring volume ().