In order to provide a magnetic resonance imaging apparatus that can acquire an image capable of quantitative assessment of fat and a method for generating water-fat separation images, echo signals are acquired during application of a frequency encoding gradient magnetic field of positive and negative polarities at the same echo time, a correction amount for correcting an adverse effect of reception frequency characteristics is evaluated from the pair of correcting echo signals, and then the correction amount is used for removing the adverse effect of reception frequency characteristics of positive- and negative-polarity images acquired by inverting a polarity of the frequency encoding gradient magnetic field.
