The instant and simultaneous availability of radiologic examinations h
as long been of interest to referring clinicians, and certainly to rad
iologists, within and outside of the hospital. In daily clinical routi
ne, the term ''film management problem'' has been used to describe a l
ack of access to this essential part of clinical information. Comprehe
nsive picture archiving and communication systems (PACSs) have been pr
oposed and implemented only within few institutions. This article disc
usses some of the most important standards, and technical and practica
l aspects of digital imaging and PACS.