Method for acquiring reference data for a phase correction in magnetic resonance technology

A non-transitory computer-readable storage medium with an executable program stored thereon, that when executed, instructs a processor to perform a method for acquiring measurement data of an object under examination and for acquiring reference data for a phase correction of the measurement data, the method comprising:

• providing a radio frequency (RF) excitation pulse to excite spins in object under examination;
• providing one or more RF refocusing pulses to refocus the spins excited by the RF excitation pulse;
• acquiring measurement data by recording echo signals of refocused spins excited by the RF excitation pulse by switching readout gradients that alternate in their polarity;
• chronologically between the providing of the RF excitation pulse and the acquisition of the measurement data, recording at least two echo signals while switching readout gradients with different polarity to acquire reference data;
• based on the acquired reference data, determining the correction data for phase correction of phase errors contained in the measurement data;
• and
• generating an electronic signal representing the correction data and providing the electronic signal as an output of the controller.

A magnetic resonance (MR) system adapted to acquire measurement data of an object under examination and to acquire reference data for a phase correction of the measurement data, the MR system, comprising:

• a MR scanner;
• and
• a controller configured to:
• control the MR scanner to provide a radio frequency (RF) excitation pulse to excite spins in the object under examination;
• control the MR scanner to provide one or more RF refocusing pulses to refocus the spins excited by the RF excitation pulse;
• acquire measurement data by recording echo signals of refocused spins excited by the RF excitation pulse by switching readout gradients that alternate in their polarity;
• chronologically between the providing of the RF excitation pulse and the acquisition of the measurement data, record at least two echo signals while switching readout gradients with different polarity to acquire reference data;
• based on the acquired reference data, determine correction data for phase correction of phase errors contained in the measurement data;
• and
• generate an electronic signal representing the correction data and provide the electronic signal as an output of the controller.