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. 03, 1990
Filed:
Mar. 10, 1989
Dietmar W Kunz, Quickborn, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
A method of and a system for, determining the nuclear magnetization distribution, where a plurality of sequences act on an examination zone in the presence of a uniform, steady magnetic field, each sequence comprising an r.f. pulse whereby, in conjunction with a magnetic gradient field, the nuclear magnetization in the zones situated on both sides of a layer to be examined is excited and possibly dephased. The r.f. peak power can be reduced by modulating a signal on a carrier whose frequency corresponds to the Larmor frequency in the center of the layer to be examined, the frequency of said signal varying in a range which corresponds to differences between said Larmor frequency and the Larmor frequencies in one of the zones.