A magnetic resonance imaging system for acquiring magnetic resonance data, wherein the magnetic resonance imaging system comprises: a radio-frequency transmitter for generating radio-frequency pulses during acquisition of magnetic resonance data, wherein the radio-frequency transmitter has multiple transmit channels; - an impedance matching network (320, 1402, 1502, 1602) adapted for impedance matching the radio-frequency transmitter to a radio-frequency antenna (310, 1504, 1602), wherein the radio-frequency antenna comprises multiple antenna elements (312, 314, 316, 318, 1404), wherein the impedance matching network is adjustable remotely; - the impedance matching network (320, 1402, 1502, 1602) being circuited between the radio-frequency transmitter and the antenna elements and having a tunable controlled coupling/decoupling network between antenna elements providing one or more free parameters per element for controlled coupling, - a memory (342, 344) for storing machine executable instructions (350, 360, 362, 364, 366, 368); and - a processor for executing the machine executable instructions, wherein the processor is adapted for controlling the magnetic resonance imaging system, wherein execution of the instructions causes the processor to: - measure (100, 200) a set of radio-frequency properties of the radio-frequency antenna; - calculate (102, 202) a matching network command using the set of radio-frequency properties and a radio frequency model, wherein the radio frequency model is descriptive of the impedance matching network and the radio-frequency antenna; and - adjust (104, 204) the impedance matching network including tuning the coupling/decoupling network between antenna elements so as to decouple the antenna elements by sending the matching network command to the impedance matching network. a radio-frequency transmitter for generating radio-frequency pulses during acquisition of magnetic resonance data, wherein the radio-frequency transmitter has multiple transmit channels; - an impedance matching network (320, 1402, 1502, 1602) adapted for impedance matching the radio-frequency transmitter to a radio-frequency antenna (310, 1504, 1602), wherein the radio-frequency antenna comprises multiple antenna elements (312, 314, 316, 318, 1404), wherein the impedance matching network is adjustable remotely; - the impedance matching network (320, 1402, 1502, 1602) being circuited between the radio-frequency transmitter and the antenna elements and having a tunable controlled coupling/decoupling network between antenna elements providing one or more free parameters per element for controlled coupling, - a memory (342, 344) for storing machine executable instructions (350, 360, 362, 364, 366, 368); and - a processor for executing the machine executable instructions, wherein the processor is adapted for controlling the magnetic resonance imaging system, wherein execution of the instructions causes the processor to: - measure (100, 200) a set of radio-frequency properties of the radio-frequency antenna; - calculate (102, 202) a matching network command using the set of radio-frequency properties and a radio frequency model, wherein the radio frequency model is descriptive of the impedance matching network and the radio-frequency antenna; and - adjust (104, 204) the impedance matching network including tuning the coupling/decoupling network between antenna elements so as to decouple the antenna elements by sending the matching network command to the impedance matching network. - measure (100, 200) a set of radio-frequency properties of the radio-frequency antenna; - calculate (102, 202) a matching network command using the set of radio-frequency properties and a radio frequency model, wherein the radio frequency model is descriptive of the impedance matching network and the radio-frequency antenna; and - adjust (104, 204) the impedance matching network including tuning the coupling/decoupling network between antenna elements so as to decouple the antenna elements by sending the matching network command to the impedance matching network.