목적: 한-일 케이블 네트워크(Korea-Japan cable network, KJCN)라 일컬어지는 한-일간 광대역 광케이블 시스템을 이용한 고속 네트워크 기반에서 고화질 디지털 영상 전송 시스템을 이용할 경우 원격 의료 교류를 경제성과 접근성 등 장점을 갖고 국가간 교류까지 확대할 수 있다. 본 연구 목적은 Korea advanced research network (KOREN)을 이용한 원격강의 영상과 음향의 질을 참가자 설문조사로 방송용 위성시스템과 비교하고자 하였다. 대상 및 방법: 한국과 일본의 연결을 위한 아시아 태평양 정보통신 기반구조(Asia pacific information infrastructure, APII)와 한국내의 초고속 선도망인 KOREN을 이용한 원격강의(A)와 방송용 위성시스템을 이용한 원격강의(B)의 영상과 음향에 대한 만족도를 내시경 시술 실시간 시연 후 설문조사를 시행하여 피교육자 측면에서 두 시스템에 대한 선호도와 차이점을 비교하였다. 결과: 11가지의 영상과 음향 등에 대한 설문조사를 시행하여 모든 질문에 응답한 96명의 설문내용을 분석하였다. 오전 오후에 1회씩 시행한 KOREN과 KJCN를 이용한 강의(A)와 방송용 위성시스템을 이용한 강의(B)의 참석률은 84%와 77%였다. 음향과 영상의 시간차이에 대해 방송용 위성시스템이 통계적으로 유의하게 선호되었다. 그러나 시간차에 대한 답변결과 중 ‘적음’과 ‘매우 적음’이 A군의 경우 55%와 11%로 B군의 51%와 38%에 큰 차이를 보이지는 않았다. 두 방식을 이용하여 시행한 원격강의의 전체적인 만족도는 ‘만족’ 72.9%, ‘매우 만족’ 17.7%였다. 결론: 원격 의료강의에 대한 음향과 화질에 대해 참가자 관점에서 위성시스템이 아직 선호되나 접근성과 경제성에서 장점을 가지고 있는 디지털 영상전송시스템을 이용한 원격 의료교류의 가능성을 제시하였다.

Background/Aims: Telemedicine is a useful tool for remote education to overcome limitations of location. We have shared medical knowledge by the use of a real-time, high quality digital video transfer system (DVTS). The study aim was to evaluate the use of the DVTS by viewer questionnaire. Methods: After an endoscopic live demonstration using DVTS and satellite broadcasting system (SBS), questions were provided for the degree of satisfaction about image and sound of the presentation. A questionnaire was composed of 11 questions concerning factors such as a comparison of image quality between the two systems. The preference between DVTS with SBS was analyzed. Results: For image quality, SBS was more preferable than DVTS (65.6% versus 16.7%). However, 16.7% found no difference between the use of DVTS and SBS. For the time delay between the image and sound, 62.5% preferred SBS and 11.5% preferred DVTS. The satisfaction for combining DVTS with SBS were 68% as good and 22% as very good. Conclusions: We have demonstrated the feasibility of telemedicine by the demonstration of a satisfactory teleconference, although DVTS was utilized as an assistant tool. DVTS should prove to be a promising tool as a useful and economic means to provide remote medicine.

Background/Aims: Telemedicine is a useful tool for remote education to overcome limitations of location. We have shared medical knowledge by the use of a real-time, high quality digital video transfer system (DVTS). The study aim was to evaluate the use of the DVTS by viewer questionnaire. Methods: After an endoscopic live demonstration using DVTS and satellite broadcasting system (SBS), questions were provided for the degree of satisfaction about image and sound of the presentation. A questionnaire was composed of 11 questions concerning factors such as a comparison of image quality between the two systems. The preference between DVTS with SBS was analyzed. Results: For image quality, SBS was more preferable than DVTS (65.6% versus 16.7%). However, 16.7% found no difference between the use of DVTS and SBS. For the time delay between the image and sound, 62.5% preferred SBS and 11.5% preferred DVTS. The satisfaction for combining DVTS with SBS were 68% as good and 22% as very good. Conclusions: We have demonstrated the feasibility of telemedicine by the demonstration of a satisfactory teleconference, although DVTS was utilized as an assistant tool. DVTS should prove to be a promising tool as a useful and economic means to provide remote medicine.

Telemedicine, Network, Medical education