A Telemedicine System for High-Quality Transmission of Paper Electrocardiographic Reports

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Abstract
To overcome problems associated with the faxing of ECGs, we developed a telemedicine system providing fast transmission of ECGs between physicians and cardiologists at different locations. It digitized ECGs at a resolution of 300 dots/inch (118 dots/cm), processed them, and transmitted them over a standard telephone line in under one minute. The system also paged the cardiologist in order to direct him or her to the location where the ECG would be waiting for interpretation. The system enabled physicians at remote locations to consult using voice, images and simultaneous cursor pointers. A transmitting site was set up at the Medical Centre of the Ministry of Defence and a receiving site at the National University Hospital, about 5 km away. During a six-month trial, 200 ECG reports were transmitted from one site to the other. They were rated excellent in quality by the cardiologists, being virtually indistinguishable from the originals. Our telemedicine system transmits high-quality ECGs rapidly and at low cost.

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