A magnetic resonance imaging apparatus includes a surface coil for receiving NMR signals released from an examinee, and an image generating unit for generating a sectional image (original image) based on the signals received. A sensitivity distribution identifier obtains sensitivity distribution data of the surface coil for each pixel in the original image by extracting low frequency components from spatial frequency of the image. A correction factor calculator derives correction factor data by substituting a predetermined function into the sensitivity distribution data. An output image calculator determines an image (output image) with improved luminance by calculating, for each pixel, a product of luminance of each pixel in the original image and the correction factor data.