The book describes the most significant topics related to the field of eHealth. eHealth initiatives are being undertaken in countries around the world. They have a myriad of benefits, including improvement of coordination and integration of health care delivery, empowerment of individuals and families for helping them manage their own health better and preparing health care plans, and facilitation of public health initiatives. eHealth is not a simple but an intricate technological and relational process. Clinicians and healthcare providers who seek to successfully exploit eHealth should pay special attention to technology, ergonomics, human aspects and organizational changes associated with the structure of the relevant health service. This book provides an overview of the impact of eHealth systems on access to healthcare, quality of information on healthcare, cost-effectiveness of healthcare services and development of eHealth equipment.