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:
Jul. 30, 2002
Filed:
Oct. 06, 2000
Jeroen Snelten, Eindhoven, NL;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
MRI apparatus with a magnet assembly for generating a uniform magnetic field in a measuring volume, wherein a combination of at least two magnetic coils is arranged adjacent an object to be examined in order to detect the radio frequency radiation emanating from the object. The combination may include, for example one birdcage coil ( ) and one surface coil ( ). The coils are arranged relative to one another and to the magnetic field in such a manner that their areas of sensitivity overlap and that their longitudinal conductors ( and , respectively) extend parallel to the uniform magnetic field B and one in the prolongation of the other. It is demonstrated that the difference between the signal-to-noise ratios of the coils causes image degradation due to the disruption ( ) of the sensitivity of the coil assembly in the zone between the coils. According to the invention, the end of the longitudinal conductor ( ) of the coil having the highest signal-to-noise ratio ( ) is bent away from its original plane, in the direction away from the object to be examined, in order to reduce the sensitivity disruption ( ) of the coil assembly.