Abstract
High-definition television is now available in two quite separate systems, with advantages over existing broadcast television formats which would benefit the medical user. The 1125 line, 60 Hz system is described, and the technical jargon explained. Production and broadcast techniques are discussed. Some recent applications of high-definition television for the demonstration of medical procedures are described, and possible future developments for medical users are outlined. A glossary of technical terms is included for those not familiar with video technology.