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:
Oct. 20, 2009
Filed:
Oct. 18, 2007
Markus Weiger, Wettswil, CH;
Michael Fey, Hornussen, CH;
Thomas Speck, Thalwil, CH;
Bruker BioSpin AG, Faellanden, CH;
Abstract
A method for homogenizing a static magnetic field with a magnetic field distribution B(r) for nuclear magnetic resonance spectroscopy by adjusting the currents Cthrough the shim coils, thus creating spatial field distributions C·S(r), where r stands for one, two, or three of the spatial dimensions x, y, and z, and said magnetic field distribution B(r) has only a field component along z, in a working volume of a magnetic resonance apparatus with one or more radio frequency (=RF) coils () for inducing RF pulses and receiving RF signals within a working volume, said RF coils having a spatial sensitivity distribution of magnitudes B(r), and with shim coils () for homogenizing the magnetic field within the working volume, said shim coils () being characterized by their magnetic field distributions per unit current S(r) and having components only along z, includes the following steps: In this way a direct one-to-one link is obtained between a set of shim currents and the associated NMR spectrum The quality of the desired NMR spectra can be improved with this method.