Patent ID: 11959988
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A method of operating a medical system, wherein the method comprises,
receiving measured gradient echo k-space data;
receiving an off-resonance phase map;
reconstructing an initial image from the measured gradient echo k-space data;
calculating an upsampled phase map from the off-resonance phase map;
calculating an upsampled image from the initial image;
calculating a modulated image by modulating the upsampled image with the upsampled phase map;
calculating a corrected image comprising iteratively:
calculating updated k-space data by applying a data consistency algorithm to a k-space representation of the modulated image and the measured gradient echo k-space data; and
calculating an updated image from the updated k-space data, wherein calculation of the updated image comprises demodulation by the upsampled phase map wherein calculating the updated image further comprises applying a smoothing algorithm, wherein the modulated image for further iteration results from the updated image.