An image display apparatus 104 according to the present invention includes a DB 130 which stores patient information of a subject, a display unit 140 that displays a group of intra-subject images of the subject and patient information, an input unit 120 that inputs at least a part of the patient information of the subject, a control unit 150, and an I/F 160 that is communicatively connected to an external receiving device. The control unit 150 searches the DB 130 for patient information of a desired subject based on information input by the input unit 120, and displays the searched patient information on the display unit 140. The patient information is transferred to the external receiving device via the I/F 160, and registered in the external receiving device.