Reconstruction of MR image data

A method for using a deep-learning network at inferencing, comprising:

• acquiring undersampled magnetic resonance (MR) data;
• providing the undersampled MR data to the deep-learning network as input data, wherein the deep-learning network receives the undersampled MR data and outputs reconstructed MR images in which undersampling artifacts are suppressed and that do not exhibit substantial fine-line artifacts, wherein the deep-learning network is trained to suppress fine-line artifacts using previously acquired MR data and respective ground-truth images, wherein each of the previously acquired MR data is acquired using a plurality of excitations including at least a first excitation and a second excitation, wherein half of the excitations use a phase-inverted excitation radio frequency pulse in comparison to the other half of the excitations;
• and
• displaying the reconstructed MR images for review.

A magnetic resonance imaging system, comprising:

• a data acquisition component configured to acquire undersampled MR data;
• a data processing component;
• a data storage component configured to:
• store undersampled MR data acquired by the data acquisition component;
• store executable code for operation of the magnetic resonance imaging system, wherein the executable code, when executed by the data processing component, causes the data processing component to provide the undersampled MR data to a deep-learning network as input data and to receive reconstructed MR images from the deep-learning network as output data, wherein the deep-learning network has been trained to use previously acquired MR data and respective ground-truth images to suppress undersampling and fine-line artifacts, wherein each of the previously acquired MR data is acquired using two excitations including a first excitation and a second excitation, wherein the second excitation uses a phase-inverted excitation radio frequency pulse in comparison to the first excitation;
• and
• store reconstructed MR images;
• and
• a data display component configured to display the reconstructed MR images for review.