The Comparison of Availability between Digital Video Transfer System and Satellite Broadcasting System in Remote Education System by questionnaire at the point of televiwer

Abstract

Background: Recently years, increasing attention had been given to the development and practice of telemedicine because new medical knowledge keeps being produced quickly. Telemedicine has opened the door to a wide range of learning experience and simultaneous feedback to doctors and students at various remote locations with economic and easy tool to access. Since broadband fiber-optic cable system between Korea and Japan was established on 2001, we are able to send endoscopic and surgical procedures not only to domestic areas(Korea advanced research network, KOREN) but also to international areas(APAN, TEIN2) including Korea Japan cable network(KJCN) by real-time, high quality Digital Video Transfer System(DVTS) using high speed network. This study aim is that the availability of DVTS in remote education system are compared with satellite broadcasting system(SBS) by questionnaire at the point of televiwer. Materials and Methods: After endoscopic live demonstration under the auspices of the Korean Society of Gastrointestinal Endoscopy at August 31th 2008, we made up a question for degree of satisfaction about image and sound using DVTS and SBS. 96 participants of total 850 to register, who attned demonstration lecture and answered for all questions were enrolled. A questionnaire was composed of 11 items such as comparison for quality of image, time delay between image and sound, preference of image(DVTS vs SBS). Then, preference between DVTS with SBS based on questionnaire at the point of televiwer, was analyzed. Results: Rate of session participation was 77% for SBS, 84% for DVTS. On question for image quality, SBS was more preferable than DVTS(65.6%vs16.7%). But, 16.7% of participants answered `No difference` between DVTS and SBS. For question of `which media was more little time delay between image and sound?`, 62.5% of participants preferred SBS. `No difference` was 24%, and 11.5% was more preferable for DVTS. Response for satisfaction when endoscopic lecture demonstrate with combining DVTS with SBS was 68% as `Good`, 22% as `Very Good`. Conclusions: We have demonstrated the feasibility of domestic and international telemedicine and have established an international medical network with high-quality video transmission, which is easy to perform, reliable, and also economical, although SBS was more preferable media than DVTS at this time. DVTS will prove to be a promising tool in remote medicine and various active utilization of this network will devote the development of diverse medical service and science with satisfaction for televiewer. We are planning to connect more and more hospitals domestically and internationally.