Patent ID: 11550008

Abstract:
The invention relates to the generation of RF pulses for MRI applications. According to the invention, a RF transmitter for a MRI system (1) is provided which comprises a RF amplifier (9) for generating RF pulses and for forwarding these RF pulses to a RF transmit coil (5) of the MRI system (1), a capacitor bank (10) coupled to the RF amplifier (9), for storing electric energy and for providing the RF amplifier (9) with a current for generating the RF pulses, a mains power supply (11) coupled to the capacitor bank (10), for generating a charging current for charging the capacitor bank (10) with electric energy, and a power supply control unit (12) coupled to the mains power supply (11), for controlling the generation of the charging current for the capacitor bank (10), wherein the power supply control unit (12) is adapted for receiving an indication signal indicating the actual and/or the upcoming current drawn from the capacitor bank (10) and for controlling the generation of the charging current for the capacitor bank (10) on the basis of the indication signal. In this way, the generation of RF pulses for MRI applications becomes more efficient making it possible to use smaller capacitor bank values at the same performance level.