Phase-encode ghosting detection and mitigation in MRI

摘要

Phase-encode ghosting detection and mitigation in MRI. The present invention discloses essentially a method for detecting phase-encoding ghosting in a MR image of an object to be imaged and mitigating the corresponding artifact in said MR image, the computer-implemented method comprising:
- acquiring MRI raw data of the object by means of a MRI apparatus, wherein the MRI apparatus comprises multiple receiver channels for acquiring said MRI raw data;
- calculating an artifact map of at least one part of the object to be imaged from the MRI raw data, said artifact map is in particular configured for highlighting artifact appearing in said MR image;
- creating an outlier mask representing detected phase-encoding artifact in said artifact map;
- mitigating phase-encode ghosting in the MR image by using the previously obtained artifact map and the outlier mask for obtaining an improved MR image.