1. A method for contrast imaging anisotropic motion of water molecules in an object, comprising the steps of: (a) obtaining a plurality of gray-scaled diffusion weighted images of an identical slice of an object using magnetic resonance imaging, each said image being obtained by applying a diffusion gradient pulse in a single direction along a corresponding axis, each said axis being orthogonal in relation to each other axis; (b) color scaling each said gray-scaled diffusion weighted image with a different primary color; and (c) combining each said color-scaled diffusion weighted image to produce a single image.