The development of Information and Communication Technologies (ICT), even in healthcare, characterizes the Information Society with a great impact on many involved structures (hospitals, clinical centres, General Practitioners, etc.). These technologies improve the integration within hospitals, between hospitals, clinical and ambulatory centres; allow the exchange of clinical data and most of the information and medical knowledge, useful for diagnosis and care processes; permit the completeness of information on patients and the rationalization of health structures and their activities. Over the last few years, the development of telematics systems in health care and in bio-medicine has placed increasingly greater emphasis on the possibility of interconnecting hospitals and health services in and between countries in such a way as to eliminate distances and harmonise different systems of health organisation, treatment with the aim of contributing towards improving the quality of care, and homogenising diagnostic and therapeutical procedures.