To obtain a water image in which a fat signal is suppressed by a desired ratio without damaging contrast by a simple method, the water image in which a fat signal remains by a desired ratio is obtained with high precision by weighting and adding a plurality of images obtained by reconstructing echo signals acquired at a plurality of different echo times. At this time, the plurality of different echo times are set so that a phase difference between water and fat signals included in the images is different in at least two images. A weight coefficient used for weighting and adding is decided so that a difference in a signal strength by a difference in the echo time is cancelled and the fat signal is suppressed by the desired ratio in the water image.
