An image display apparatus includes: a storage unit storing in-vivo image data and information associated with the in-vivo image data and related to a position of a capsule endoscope in a subject an image processing unit performing image processing on the in-vivo image data stored in the storage unit a display unit displaying an in-vivo image based on the in-vivo image data image-processed in the image processing unit a position estimating unit estimating an intra-subject position in which an in-vivo image is captured, based on the position-related information a control unit performing image processing in the image processing unit and position estimation processing in the position estimating unit in parallel and a reporting unit reporting information indicating that a radiogram interpretation is possible, when image processing in the image processing unit for all the in-vivo image data is completed while processing in the position estimating unit is not completed.
