A method of correcting magnetic resonance images is provided. Seed points having a same expected true intensity are selected from the image points in an image. An intensity correction function If(X) is determined by fitting measured intensities Im(Xs) of the seed points to Im(Xs)=If(Xs), where x denotes the coordinate of the image points. If(X) is a polynomial function and the values of its coefficients are determined by the fitting. Corrected intensities Ic(Xc) for corrected image points are calculated according to Ic(Xc)=Im(Xc)/If(Xc). A corrected image includes the corrected image points.