An apparatus and method for supporting an image diagnosis. The apparatus may include a location determiner configured to determine a relative location of a probe with respect to a subject's body based on absolute location information and angle information of the probe, a mapper configured to map, to a three-dimensional model, a current image acquired through the probe using the relative location of the probe, and a presenter configured to output a three-dimensional model where the mapped current image and a pre-captured part are marked.
