Browsing by Author "Perakis, Konstantinos"
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- Item3G Networks in Emergency Telemedicine - An In-Depth Evaluation And Analysis.(2007-02-06) Perakis, Konstantinos; Konnis, Georgios; Koutsouris, Dimitris; Banitsas, KonstantinosThe evolution of telecommunications technologies in connection with the robustness and the fidelity these new systems provide have opened up many new horizons as regards the provision of healthcare and the quality of service from the side of the experts to that of the patients The purpose of this paper is to evaluate the third generation telecommunications systems that are only recently being deployed in Europe as well as argue on why a transition from 2G and 2 5G to 3G telecommunications systems could prove to be crucial especially in relation to emergency telemedicine The experimental results of the use of these systems are analyzed the implementation of a tele consultation unit is presented and their exploitation capabilities are explored
- ItemDigital watermarking in telemedicine applications--towards enhanced data security and accessibility.(2007-10-23) Giakoumaki, Aggeliki L; Perakis, Konstantinos; Tagaris, Anastassios; Koutsouris, DimitrisImplementing telemedical solutions has become a trend amongst the various research teams at an international level Yet contemporary information access and distribution technologies raise critical issues that urgently need to be addressed especially those related to security The paper suggests the use of watermarking in telemedical applications in order to enhance security of the transmitted sensitive medical data familiarizes the users with a telemedical system and a watermarking module that have already been developed and proposes an architecture that will enable the integration of the two systems taking into account a variety of use cases and application scenarios
- ItemUse of 3G mobile phone links for teleconsultation between a moving ambulance and a hospital base station.(2006-01-27) Banitsas, Konstantinos A; Perakis, Konstantinos; Tachakra, Sapal; Koutsouris, DimitriosWe developed a mobile teleconsultation system based on third generation mobile phone links The system comprised a laptop computer and a digital camcorder It was installed inside an ambulance to allow video conferencing between the moving vehicle and a doctor at a base station In addition to video and voice high quality still images could also be transmitted A series of 17 trial runs with real ambulance patients was conducted in the city of Athens In general the videoconferencing sessions produced relatively clear video The bandwidth was high enough for a satisfactory video of 10 15 frames s During a total testing period of 23 h and in an area of about 180 km2 there were nine instances of signal loss amounting to a total of 17 min The general opinion formed by the doctors was that the system produced good results All initial diagnoses made using the system agreed with the final diagnoses of the patients The study showed that the mobile system could reduce the time before an ambulance patient is seen by a doctor