An MRI apparatus includes: an image display device for displaying diffusion weighted images of respective axes corresponding to one slice； a designation operating device for allowing an operator to designate each diffusion weighted image targeted for rephotograph from the displayed diffusion weighted images of axes； a diffusion weighted imaging device for rephotographing only the axis of each diffusion weighted image designated by the operator； a diffusion weighted image substituting device for substituting an original diffusion weighted image with each diffusion weighted image obtained at the diffusion weighted photography； and a diffusion tensor image creating device for creating a diffusion tensor image from a set of the post-substitution diffusion weighted images.
