Patent ID: 8427157

Claim:
A method to determine a predetermined signal amplitude for essentially all RF pulses of a pulse sequence transmitted into an examination subject in an MR measurement, comprising: in an MR measurement, radiating multiple RF radiations, each comprised of at least one RF pulse, into the examination subject in order to excite nuclear spins in the examination subject, with each excited nuclear spin having an associated T2 time, in a pulse sequence in which said RF radiations are repeated with a repetition time TR that is smaller than any of the T2 times of the excited nuclear spins, each of said RF pulses producing a magnetization of nuclear spins in the examination subject, thereby producing a plurality of successive magnetizations; and after each magnetization, reading out MR signals, produced by the excited nuclear spins for essentially all RF pulses of the pulse sequence establishing a target magnetization for a predetermined point in time after radiation of a respective RF pulse of the pulse series; in a processor, determining a target flip angle and a target phase for different regions of the examination subject for essentially all RF pulses depending on the respective target magnetization and an existing magnetization that is residual due to a combination of preceding, respective magnetizations produced by RF pulses proceeding said respective RF pulse; in said processor, respectively determining a time curve of the amplitudes and phases for essentially all RF pulses in order to cause, for each pulse, the respective target magnetization, to be achieved after radiation of the respective RF pulse; and radiating all of the RF pulses, in the pulse sequence, with the respective determined amplitude and phase response into said examination subject during the MR measurement.