Methods and systems for magnetic resonance imaging

A method for magnetic resonance imaging (MRI), comprising:

• causing an MRI scanner to acquire MR data related to a subject;
• entering the MR data into a plurality of k-space datasets by sampling the MR data using an acquisition weighting technique or a density weighting technique, each of the plurality of k-space datasets including at least one fully-sampled region filled with sampled k-space lines;
• for each of the plurality of k-space datasets, obtaining a convolution filter based on the at least one fully-sampled region, and producing a modified k-space dataset by applying the convolution filter to the k-space dataset;
• and
• reconstructing an image of the subject using the modified k-space datasets.

A system, comprising at least one processor and at least one storage for storing instructions, the instructions, when executed by the at least one processor, causing the system to:

• obtain a plurality of k-space datasets related to a scanning of a subject performed by an MRI scanner, each of the plurality of k-space datasets including a plurality of data points, the plurality of data points including data points sampled by the MRI scanner;
• obtain at least one filter for processing the plurality of k-space datasets, the filter including a plurality of weighting factors;
• apply the at least one filter to the plurality of k-space datasets convolutionally to obtain a plurality of processed k-space datasets, wherein by applying the at least one filter, an application region extending through the plurality of k-space datasets is determined within the plurality of k-space datasets, and a data point within the application region is modified based at least on the other data points within the application region and the plurality of weighting factors;
• and
• generate an image based on at least one of the processed k-space datasets, wherein during the convolutional application of the at least one filter to the plurality of k-space datasets, at least some of the data points sampled by the MRI scanner are modified with the at least one filter.