Device and method for generating excitation pulses
AssigneeSiemens Healthcare GmbH
InventorsUvo Hölscher, Stephan Stöcker, Christian Wünsch
Life of this patent
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Abstract
A radio-frequency control system for a magnetic resonance tomography system and a method for the operation thereof are provided. The radio-frequency control system includes a controller and a radio-frequency power amplifier with amplification between a signal input and a signal output of the radio-frequency power amplifier that is dependent on a predetermined frequency response. The controller determines a control pulse for multislice excitation and outputs the pulse to the signal input of the radio-frequency power amplifier. The controller determines a high-frequency power value for the control pulse in dependence on the predetermined frequency response of the radio-frequency power amplifier.
Claims20
A radio-frequency control system for a magnetic resonance tomography system, the radio-frequency control system comprising:
- a controller;
- and
- a radio-frequency power amplifier with amplification between a signal input and a signal output of the radio-frequency power amplifier that is dependent on a predetermined frequency response,
- wherein the controller is configured to:
- determine a control pulse for multislice excitation;
- output the control pulse to the signal input of the radio-frequency power amplifier;
- and
- determine a high-frequency power value for the control pulse in dependence on the predetermined frequency response of the radio-frequency power amplifier from the control pulse or a nominal control pulse that is independent of the frequency response from which the control pulse is generated.
A method for operating a magnetic resonance tomography system, wherein the magnetic resonance tomography system comprises a radio-frequency control system, the radio-frequency control system comprising a controller and a radio-frequency power amplifier with amplification between a signal input and a signal output of the radio-frequency power amplifier that is dependent on a predetermined frequency response, the method comprising:
- determining, by the controller, a control pulse for multislice excitation;
- and
- outputting the control pulse to the signal input of the radio-frequency power amplifier;
- determining a high-frequency power value for the control pulse in dependence on the predetermined frequency response of the radio-frequency power amplifier from the control pulse or a nominal control pulse that is independent of the predetermined frequency response, from which the control pulse is generated.
In a non-transitory computer-readable storage medium that stores instructions executable by a controller of a radio-frequency control system to operate a magnetic resonance tomography system, the magnetic resonance tomography system comprising the radio-frequency control system, the radio-frequency control system comprising a radio-frequency power amplifier with amplification between a signal input and a signal output of the radio-frequency power amplifier that is dependent on a predetermined frequency response, the instructions comprising:
- determining, by the controller, a control pulse for multislice excitation;
- outputting the control pulse to the signal input of the radio-frequency power amplifier;
- and
- determining a high-frequency power value for the control pulse in dependence on the predetermined frequency response of the radio-frequency power amplifier from the control pulse or a nominal control pulse that is independent of the frequency response, from which the control pulse is generated.
Dependencies are inferred from the claim text.