An image display method and an image display apparatus 4 realize prevention of misdiagnosis which is caused by corruption of a part of at least one type of information including identification information ID, information on a series of images I, and diagnosis-report information 15b-1. The image display method and the image display apparatus 4 perform an operation using a predetermined hash function on patient information ID1, examination information ID2, a series of images 11 to In acquired by an intra-subject information acquiring apparatus 2 to generate and add hash data h. Thereafter, the image display method and the image display apparatus 4, when using case data 15a-1, perform an operation using a predetermined hash function to generate new hash data, compare each piece of the hash data h already added and newly generated hash data, and determine whether two pieces of hash data match with each other. Based on the result of determination, the use of the case data 15a-1 is canceled, or display of corrupted image is restricted, for example, so that the misdiagnosis is prevented.
