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:
Sep. 07, 1993
Filed:
Aug. 13, 1991
Graeme McKinnon, Zurich, CH;
Peter Bosiger, Ennetbaden, CH;
U.S. Philips Corp., New York, NY (US);
Abstract
Two-dimensional nuclear magnetic resonance spectroscopy with a frequently repeated sequence comprises four high-frequency pulses and acting together with a homogeneous stationary magnetic field upon an examination area, which sequence contains two 180.degree. pulses, halfway between which a third pulse is located. The pulse of the sequence are preceded by a first pulse, whose distance from the second pulse, which is equal to or larger than the relative distance of the other pulses, is varied during the repetition of the sequence. This method is particularly suitable for in vivo examinations of the human body in that during three of the four pulses magnetic gradient fields are operative, whose gradients extend mutually perpendicular to each other, and before and after the third high-frequency pulse a magnetic gradient field is operative having such a duration and such a gradient that the time integral across this field has the same value before the third pulse as after the third pulse.