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. 21, 2014
Filed:
Jul. 13, 2011
Elfar Adalsteinsson, Belmontt, MA (US);
Hans-peter Fautz, Forchheim, DE;
Kawin Setsompop, Charlestown, MA (US);
Lawrence Wald, Cambridge, MA (US);
Elfar Adalsteinsson, Belmontt, MA (US);
Hans-Peter Fautz, Forchheim, DE;
Kawin Setsompop, Charlestown, MA (US);
Lawrence Wald, Cambridge, MA (US);
Siemens Aktiengesellschaft, Munich, DE;
The General Hospital Corp., Boston, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
In a magnetic resonance apparatus and operating method therefor, and in a processor that is programmed to design RF pulses for operating such a magnetic resonance apparatus, the RF pulses are designed to mitigate off-resonance effects caused by inhomogeneity of the basic (B0) magnetic field in the magnetic resonance apparatus. The RF pulses of a parallel transmit array are designed with different spatial phase distributions, that deviate from a constant phase from pulse-to-pulse, with the absolute value of the difference between respective spatial phase distributions of any two successively radiated RF pulses corresponding to the off-resonance that is caused by B0-inhomogeneity during the time between the radiation of the successive pulses. Additionally, or separately, currents supplied to the shim coils can be taken into account in the design of the RF pulses as an additional degree of freedom, with the shimming of the basic magnetic field produced by the shim currents deviating from shim currents designed to ideally produce a homogenous B0 field.