An image processing apparatus includes: a region-of-interest setting information storage unit in which region-of-interest setting information for setting one or more regions of interest in a specified cross-sectional image is stored； an evaluation value acquiring unit that acquires, using measured values, an evaluation value for evaluating a region of interest in the specified cross-sectional image, for each region of interest indicated by the region-of-interest setting information, and acquires, using measured values, a related evaluation value for evaluating a region in one or more cross-sectional images other than the specified cross-sectional image, for each region corresponding to each region of interest indicated by the region-of-interest setting information； and an output unit that outputs the acquired evaluation value and related evaluation value in association with the specified cross-sectional image corresponding to the evaluation value and the cross-sectional image corresponding to the related evaluation value.
