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:
Aug. 10, 1993
Filed:
Jan. 03, 1992
Graeme McKinnon, Zurich, CH;
Peter Bosiger, Ennetbaden, CH;
U.S. Philips Corp., New York, NY (US);
Abstract
A plurality of sequences act on an examination zone in the presence of a uniform, steady magnetic field, each of the sequences comprising at least three RF pulses which are preferably formed as 90.degree. pulses, applying between the second and the third RF pulse and after the third RF pulse magnetic gradient fields (G.sub.x) having an amplitude and a duration such that spin resonance signals occurring after the third RF pulse are determined exclusively by double quantum coherence. Thus, spatial and spectral determination of a lactate component is simultaneously possible when it is ensured that at least one magnetic gradient field is applied between or after the three RF pulses and when the time integral over at least one of these gradient fields is varied during repetition of the sequences, the second RF pulse (HF.sub.2) being frequency selective to reduce the lipid component (L.sub.1) near the lactate component (M.sub.1) so that the nuclear magnetization of the component (M.sub.2) coupled to the lactate component (M.sub.1) is excited, but not the nuclear magnetization of the component (L.sub.2) coupled to the lipid component (L.sub.1).