PROBLEM TO BE SOLVED: To improve image quality when respectively creating images from a plurality of pieces of volume data on the basis of motion analysis information and image quality information of an image.SOLUTION: A medical image processor includes: a first generation part for generating a plurality of pieces of volume data, and generating respective pieces of image information a second generation part for generating each piece of motion analysis information of the plurality of pieces of volume data a correction processing part for associating a voxel at least one piece of volume data with a voxel of another piece of the volume data different from the one piece of volume data according to the motion analysis information about the one piece of volume data in the plurality of pieces of volume data, determining the height of the reliability of the associated voxels on the basis of the image quality information, and correcting the voxel value of the associated voxels by using a filter of a parameter that changes in accordance with the height of the reliability of the associated voxels and a display processing part for performing processing for displaying a plurality of images obtained by visualizing the plurality of pieces of volume data on the basis of the corrected voxel value.
