Patent ID: 8866478
Filing Date: 2014-10-21
Classification: G01R

Abstract:
1. A computerized method for designing radio-frequency (RF) pulses to be radiated in a parallel transmission RF array in a pulse sequence used to operate a magnetic resonance apparatus in which a B0 field is present that exhibits a B0-inhomogeneity that causes off-resonance effects, said method comprising the steps of: in a computerized processor, executing a design algorithm that designs said RF pulses to respectively radiate B1 fields in said parallel RF transmission array, each B1 field having an associated spatial phase distribution; in said processor, executing said design algorithm by designing said RF pulses to produce respective associated spatial phase distributions that are non-constant and that differ from each other by a difference that mitigates said off-resonance effect caused by said B0-inhomogeneity; and at an output of said processor, providing a data file that represents the RF pulses designed by execution of said design algorithm, in a form incorporable in said pulse sequence to operate said magnetic resonance apparatus.