Telemedicine using mobile satellite communication.
With a view to providing paramedical care within moving vehicles, a telemedicine technique using mobile satellite communication was proposed. With this technique, the diagnosis from a specialist and the emergency care under his/her instructions would be available on the spot without unnecessary delay. The characteristic problems of this technique were identified as: channel capacity, size of the system, reliability of vital sign transmission, real-time operation and electromagnetic interference. Measures against these problems were devised, and their effectiveness was analyzed. A data format was designed and an experimental system was developed. The system can simultaneously transmit a color image, an audio signal, 3 channels ECG and blood pressures from a mobile station to a ground station. It can transmit an audio signal and error control signals from a ground station to a mobile station in a full duplex mode. Fundamental transmission characteristics were measured in a fixed station. Finally, experiments of medical data transmission were conducted with a navigating ship and an aircraft flying an international route. The measured threshold values of C/N(o) to guarantee satisfactory data reception were well below the lower boundary of C/N(o) of the communication link. Consequently, the feasibility of this technique was verified.
Murakami
H
H
Faculty of Engineering, Tohoku University, Sendai, Japan.
Shimizu
K
K
Yamamoto
K
K
Mikami
T
T
Hoshimiya
N
N
Kondo
K
K
D000401:Aircraft; D003199:Computer Systems; D005240:Feasibility Studies; D015203:Reproducibility of Results; D017215:Satellite Communications / Q000295:instrumentation*; D012767:Ships; D017216:Telemedicine