Computer-implemented method for providing an actuation sequence to be used which specifies transmit signals to be emitted for at least one high-frequency transmit channel of an antenna arrangement of a magnetic resonance device for acquiring measurement data of an object under investigation by the magnetic resonance device, comprising the steps of: - providing different actuation sequences (16-18, 34), each of which is the result of an optimisation method and which differ with regard to the value of an optimisation parameter (13-15, 47) taken into account in the course of the optimisation method, - providing a plurality of field distribution maps acquired by the or a further magnetic resonance device from the object under investigation, - selecting the actuation sequence to be used from the different actuation sequences (16-18, 34) depending on the field distribution maps and providing the actuation sequence to be used, characterised in that the different actuation sequences (16-18, 34) are results of an optimisation method, in the course of which a cost function is minimised which is a weighted sum of - an energy input measure which relates to an anticipated energy input into a reference region of at least one reference object under investigation which is described by a respective reference data set in the event of an actuation sequence (16-18, 34) to be optimised being used, and - a deviation measure which relates to a deviation of an excitation distribution which is expected to be achieved in the reference object under investigation in the course of the actuation sequence from a nominal excitation distribution, wherein the relative weighting of the energy input measure and the deviation measure is specified by the optimisation parameter, that a provisional actuation sequence (16-18, 34) is selected from the different actuation sequences (16-18, 34) and, depending on the field distribution maps and the provisional actuation sequence (16-18, 34), an energy input into a selected region of the object under investigation in the event of the provisional actuation sequence being used for acquiring the measurement data is forecast, i) wherein the provisional actuation sequence is selected as the actuation sequence to be used if the forecast energy input is within a specified interval or, if the forecast energy input is outside the specified interval, a new provisional actuation sequence (16-18, 34) is selected from the different actuation sequences (16-18, 34) and step i) is repeated until the forecast energy input is within the specified interval. - providing different actuation sequences (16-18, 34), each of which is the result of an optimisation method and which differ with regard to the value of an optimisation parameter (13-15, 47) taken into account in the course of the optimisation method, - providing a plurality of field distribution maps acquired by the or a further magnetic resonance device from the object under investigation, - selecting the actuation sequence to be used from the different actuation sequences (16-18, 34) depending on the field distribution maps and providing the actuation sequence to be used, characterised in that the different actuation sequences (16-18, 34) are results of an optimisation method, in the course of which a cost function is minimised which is a weighted sum of - an energy input measure which relates to an anticipated energy input into a reference region of at least one reference object under investigation which is described by a respective reference data set in the event of an actuation sequence (16-18, 34) to be optimised being used, and - a deviation measure which relates to a deviation of an excitation distribution which is expected to be achieved in the reference object under investigation in the course of the actuation sequence from a nominal excitation distribution, wherein the relative weighting of the energy input measure and the deviation measure is specified by the optimisation parameter, that a provisional actuation sequence (16-18, 34) is selected from the different actuation sequences (16-18, 34) and, depending on the field distribution maps and the provisional actuation sequence (16-18, 34), an energy input into a selected region of the object under investigation in the event of the provisional actuation sequence being used for acquiring the measurement data is forecast, i) wherein the provisional actuation sequence is selected as the actuation sequence to be used if the forecast energy input is within a specified interval or, if the forecast energy input is outside the specified interval, a new provisional actuation sequence (16-18, 34) is selected from the different actuation sequences (16-18, 34) and step i) is repeated until the forecast energy input is within the specified interval. i) wherein the provisional actuation sequence is selected as the actuation sequence to be used if the forecast energy input is within a specified interval or, if the forecast energy input is outside the specified interval, a new provisional actuation sequence (16-18, 34) is selected from the different actuation sequences (16-18, 34) and step i) is repeated until the forecast energy input is within the specified interval.