Patent ID: 8803522

Claim:
A method to acquire magnetic resonance (MR) data comprising: from a computerized control unit, operating an MR data acquisition unit with an examination subject therein to acquire MR data from a predetermined three-dimensional volume segment of the examination subject by selectively exciting nuclear spins in said three-dimensional volume segment with a radio frequency (RF) excitation pulse while simultaneously activating a first magnetic field gradient, two second magnetic field gradients, and a third magnetic field gradient; acquiring said MR data from the three-dimensional volume segment of the examination subject, resulting from the excited nuclear spins, with phase coding by said two second magnetic field gradients and spatial coding by said third magnetic field gradient; and in said computerized control unit, setting a frequency range of said RF excitation pulse dependent on respective resonant frequencies of at least two types of said nuclear spins in said three-dimensional volume segment, to cause a center frequency of said frequency range to be between said respective resonance frequencies by calculating an average of said resonance frequencies of said at least two types of nuclear spins, and setting said center frequency to be equal to said average.