B. Multimedia development

Medical aspects

The on-going evolution of initial teaching as well as permanent training shows more and more potential for interaction with a computer. If it is true that browsing through a specialised library can be very beneficial for a medical student, it must be underlined that the practicing surgeon would for himself like to have the same opportunity. But he misses the time for doing so.
Multimedia documents can bring this kind of training (new techniques, new instruments, even simulation of procedures) to his computer for him to train on. This aspect is quickly validated when one Itakes a look at the multimedia presentations and the crowds they attract at medical congresses.
Unfortunately, conceiving such documents take up so much time that they are very seldomly edited by top expert. TESUS proposes to resolve this problem by connecting this kind of training support (CD Rom) with the input into the surgical databases, to everyone's educational benefit.

Technological aspects

At the heart of the needed telecommunications developments is situated the mandatory high quality real time video transmission which will allow the proper co-operative work mode in the surgical environment. Several diagrams (1 and 2) (see below) show the relations between video quality and bit rate of transmission as well as the quality obtained for moving and still pictures with existing protocols.

Diagram 1: Video quality vs. Transmission bit rate

Diagram 2: Quality << moving vs. still pictures >>

Concerning the transport versus compresion compromise, the diagram 3 (see below) explains the location of the acceptable quality area regarding flow of compression and resulting transport costs. This means that the current ISDN narrowband network cannot be used for the transmission of this high quality moving pictures.

Diagram 3: Transport versus compression compromise

Diagram 4: ATM Master IRCAD

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Universitätsrechenzentrum Basel / Dieter Glatz