A PACS (Picture Archiving and Communication System) and reporting system were introduced into Gunma University Hospital. These systems were linked with Hospital Information System (HIS), enabling us to refer to images, such as those of CR, CT, MRI and scintigraphy, at wards and conference rooms within a reasonable times. Bone scintigraphy and a report on it are illustrated as an example. A standardized protocol for the interface between PACS and the imaging format must be established without delay for the progress of PACS.