1. A medical image display apparatus comprising: an image obtainment unit configured to obtain a first image and a second image of a subject generated based on volume data; a base line setting unit configured to set a base line in the first image obtained by the image obtainment unit; an image division unit configured to divide, based on a division line, which is set within the second image, corresponding to the base line that has been set in the first image by the base line setting unit, the second image into two divided images; and a display control unit configured to display the two divided images, which have been divided by the image division unit, on the first image at a display device in such a manner that the two divided images are away from the base line within the first image by a predetermined distance, wherein the division comprises a translation of the two divided images.