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:
Feb. 21, 2012
Filed:
Jun. 19, 2009
Dirk Diehl, Erlangen, DE;
Rene Gumbrecht, Herzogenaurach, DE;
Juergen Nistler, Erlangen, DE;
Wolfgang Renz, Erlangen, DE;
Markus Vester, Nuremberg, DE;
Sebastian Wolf, Adelsdorf, DE;
Dirk Diehl, Erlangen, DE;
Rene Gumbrecht, Herzogenaurach, DE;
Juergen Nistler, Erlangen, DE;
Wolfgang Renz, Erlangen, DE;
Markus Vester, Nuremberg, DE;
Sebastian Wolf, Adelsdorf, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In a magnetic resonance apparatus having an RF radiating coil and gradient coils, and in a method for operating such a magnetic resonance apparatus, a pulse sequence, composed of multiple time steps, is specified for operating the gradient coils to time-dependently select regions of a selected slice of a selected volume of a subject. A non-linear equation system is then solved to obtain feed parameters for individual channels of the transmit coil for each time step, with specification of a desired target magnetization, and dependent on the pulse sequence specified for the gradient coils. The non-linear equation system is based on discrete values for time and space variable and, in addition to equations resulting from the Bloch equation, which are non-linear in their feed parameters, includes at least one additional equation that describes boundary conditions for the examination of the subject.