Aims To have multi-point discussion based on H.323 machines such - PDF document

Albert AU, Hong Kong University Albert Au Sr. I.T. Manager LKS Faculty of Medicine The University of Hong Kong Aims   To have multi-point discussion based on H.323 machines such as Polycom HDX9004, CISCO C60, Lifesize and Sony.  To transmit live surgical operation between the University of Hong Kong and the HKU-Shenzhen Hospital which is in mainland China. The 7th Asia Telemedicine Symposium, 2013 1

Albert AU, Hong Kong University Geographics  Difficulties   HKU-Shenzhen Hospital was just opened in 2011.  HKU-Shenzhen Hospital is using a commercial network with 60Mbps bandwidth. The 7th Asia Telemedicine Symposium, 2013 2

Albert AU, Hong Kong University Methods   DVTS  DVTS plus  H.323  HD-SCR  Vidyo How   To transmit a mpeg video from a computer to simulate the transmission of surgical operation.  Provide subjective marks from 1 to 5 on video quality  Calculate the time delay with the web site http://www.timeanddate.com/worldclock/city.html?n=102 The 7th Asia Telemedicine Symposium, 2013 3

Albert AU, Hong Kong University  DVTS   Quatre Canopus TwinPact 100  DVTS technology (16-bit audio encoding)  FireWire IEEE 1394 VGA IEEE1394  Maximum 4 sites  NTSC only Internet Notebook to Notebook with DVTS & play DVD video Network connection The 7th Asia Telemedicine Symposium, 2013 4

Albert AU, Hong Kong University DVTS plus   Supported by Tsinghua University  Desktop client  DVTS technology (12-bit audio encoding)  FireWire IEEE 1394  Maximum >10 sites  NTSC only  URL: http://conf.dvtsplus.org H.323   Polycom HDX9004  Lifesize  Cisco C60  Sony Internet The 7th Asia Telemedicine Symposium, 2013 5

Albert AU, Hong Kong University HD-SCR  VidyoRoom  Supported by Kyushu University Hospital HD220  Video source transmitted by H.323 or VidyoRoom  Streaming server VidyoPortal in HDMI Internet Kyushu University Hospital To streaming server Notebook to play DVD video Vidyo   VidyoPortal VidyoRoom HD220  VidyoRoom HD220  Desktop client Internet  Maximum >10 sites HDMI VidyoPortal Notebook to play DVD video The 7th Asia Telemedicine Symposium, 2013 6

Albert AU, Hong Kong University Results   Due to the low bandwidth of the commercial network, DVTS and DVTS plus were not successful.  The video could be received by H.323, HD-SCR and Vidyo. Conclusion   It is technically possible to transmit live surgical operation in high- definition from the University network to commercial network. It was also found that the delay was about one second. The 7th Asia Telemedicine Symposium, 2013 7

Albert AU, Hong Kong University Acknowledgement   Professor Congxiao Bao, Tsinghua University  Mr Nobuhiro Torata, TEMDEC, Kyushu University Hospital  Mr Kenneth Wong, Department of Surgery, LKS Faculty of Medicine, The University of Hong Kong  Mr Stanley Yeung, Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong  Mr XL Zhang, HKU-Shenzhen Hospital The 7th Asia Telemedicine Symposium, 2013 8