A telecardiology system has been established between six Italian hospitals.
Four of them are connected using three ISDN lines; the remaining two are c
onnected with only a single ISDN line. The telecardiology system was evalua
ted between two hospitals. Radiographs showing the heart movements of 10 pa
tients were digitized and forwarded to the specialist hospital for expert o
pinion. The transfer time of a single patient sequence ranged from 6 h 40 m
in to 22 h 15 min using a single ISDN line at 128 kbit/s. The transfer time
decreased considerably using three ISDN lines. Following data transfer, a
joint consultation was organized between the cardiologists in realtime. Rea
ltime telecardiology using three ISDN lines was clinically viable and more
efficient than the traditional method of delivering this type of specialist
care.