Teleradiology can be defined as the remote transmission of radiographic images for clinical use or expert interpretation. This definition indicates that there is a physical distance that impedes patient care between the interpreting expert and the primary physician, which can be overcome through electronic communications. The major benefit of such a system is faster communication of images with expert interpretation to remote sites. Depending on the application, teleradiology can extend the usefulness of the radiologist or make the primary physician's job much less time consuming by saving trips to radiology. In addition, patient interaction can be improved by eliminating the interval between the study and the availability of the images and report. It has not been satisfactorily determined that this more rapid system will lead to improved patient care but most students of the current delivery system recognize its limitations and the promise of electronic communications. The authors confine their remarks to the hospital and immediate clinics, leaving the wider area networks to the other presentations in this seminar, and they draw on the experience of the group at the University of Florida in establishing teleradiology to all the intensive care units two years ago and several other more limited, point-to-point electronic communication links. They have, during the past year, worked very hard at establishing several local area networks with digital archiving capability within their institution. This borders on the notion of picture archiving and communication systems (PACS), but has not reached that full potential. The authors find it is useful to concentrate on the teleradiology component because a number of projects can be undertaken without the need of a complete PACS environment. An extensive bibliography, compiled from select sources, is included.