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Telemedicine
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A telemedicine system in a small healthcare centres consist of a personal computer with customized medical software connected to a few medical diagnostic instruments, such as an ECG or X-ray machine or an X-ray scanner for scanning X-ray photos. Through this computer, digitized versions of patients' medical images and diagnostic details (such as X-ray images and blood test reports) are dispatched to specialist doctors through the satellite-based communication link. The information, in turn, is received at the specialist centre where experienced doctors examine the reports, diagnose, interact with the patients (along with local doctors), and suggest appropriate treatment through video-conferencing. The entire system is relatively user-friendly, and only a short period of training is needed for doctors at super-specialty centres and rural health centres to handle the system. And hospital technicians can take care of the operation and maintenance of the equipment.
Connectivity for telemedicine software solution is a major concern as many of the remote sites in different states in india covered by CDAC do not have basic telephony services. CDAC has worked on almost every type of connectivity media to provide better services to community. Initially CDAC started with dial up Connection using the bandwidth of 36-56 Kbps of speed to transfer data while working on the software named Sanjeevani. Further, to transmit quality video and voice/audio in videoconferencing across long distances, higher bandwidth is required. Therefore CDAC switches to ISDN connectivity having bandwidth of up to 384 Kbps. It is possible to transfer data over lines having bandwidth of 64-384 Kbps. It has been implemented in india over six locations:
- PGIMER Chandigarh
- AIIMS New Delhi
- SGPGI Lucknow
- IGMC Shimla
- PGIMS Rohtak
- SCB Medical College Cuttack
These sites are well connected over ISDN lines for expert consultation using the Telemedicine software.
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Afterwards for much better services, communication is done through dedicated line i.e. Leased lines that are used to transmit data over lines having the bandwidth of up to 2 mbps which is IP based. In contrast to conventional connections, leased lines are always active. And because they do not carry anyone else's communications, the carrier can assure a given level of quality. It is typically determined by the capacity of the line and the distance between its end points.
To double the speed of transmitting data, CDAC has started the broadband access which is hundred times faster than dialup connection and provides unlimited access.
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