1. A medical image display device comprising: panoramic image creating means configured to create a panoramic image of a hollow organ of an examinee; display means configured to display the panoramic image; false image probability calculating means configured to calculate a false image probability of a position in the panoramic image in accordance with the position concerned; and control means configured to create a graph of the false image probability and a center line position of the hollow organ, and to display the panoramic image and the graph in association with the center line position, on the display means.