CT scan —i approx. 2.10 m. This concept describes an installation in the Kantonsspital hospital in Basle/Switzerland (O Fig. 6.19).

Special attention was given to providing the user interface with an ergonomic design. All functions can be handled by infrared remote control or via a touch screen (O Fig. 6.20).

Trauma concept 2: radiology requirements - utilisation of the CT

The version described above is very effective because everything is in one room. It is worth giving a special mention to two facts:

4 In this version, the CT is used for traumatology and intraoperative X-ray control during surgery. The CT is therefore not used as much as a conventional CT for standard diagnostic purposes. 4 Relatively long rooms are required for the whole system to be docked together in line.

The AWIGS transfer board not only allows for optimum use of the space available, but the AWIGS-CT can also be used for pure diagnosis.

The operating table and scanner unit can be accommodated in two separate rooms. The AWIGS transfer board is in front of the AWIGS CT table, so that it can be docked onto the operating table or a patient transporter can dock onto it in turn. This means that the AWIGS CT can be used for both standard diagnosis and for trauma-tology without having to transfer the patient.

The AWIGS transfer board swivels manually through +/- 130° and can be lowered to 50 cm. Patients capable of walking can position themselves comfortably for pure diagnosis (O Fig. 6.21).

Fig. 6.18. Emergency transporter
O Fig. 6.19. The patient is transferred between the components without any need for manual repositioning
Fig. 6.20. Touch screen and IR remote control

Fig. 6.21. AWIGS transfer table turned

Both cases offer the advantage of being able to do a whole-body scan.

Compatibility of AWIGS with the standard operation column »Alphamaquet 1150«

To allow for interdisciplinary working of surgery and radiology, it is also important for new systems such as AWIGS/VIWAS to be compatible with standard operating equipment. The mechanical patient transporter can be used to make the AWIGS system compatible with an Al-phamaquet 1150 standard operating table column. Polytraumas cannot be planned to schedule, and it is always possible that the AWIGS operating suite with the duplex column operating table is in use when it is needed, so that a possibility has been created to use other operating theatres in the same way. The illustrations in O Figs. 6.22 and 6.23 show the compatibility and flexibility of both systems without having to transfer the patients.

Elective surgery, illustrated by neurosurgery

When it comes to elective surgery, AWIGS can save life-saving time. The system can be used for example for neu-rosurgery, orthopaedic procedures, oral and maxillofacial surgery and general surgery. The basic idea behind developing the AWIGS system was to avoid having to transfer the patient to the radiology department at all during the operation. This is joined by the surgeons' demand to make digital data available for an immediate control of the results of the operation, so that they can be sure that the operation was a positive success already on finishing the procedure. Intraoperative use of a CT in neurosurgery is one possible example here: at the moment, a tumour is removed on the basis of CT data taken a few days before and after the operation. But not even the most experienced surgeon can see from these data whether the tumour has shifted during the operation as a result of the situation.

The patient is operated on the AWIGS operating table. If an intraoperative CT scan is required, the patient can be moved straight into the CT gantry on the same board without having to be transferred (O Fig. 6.24). If necessary, the operation can be continued immediately, depending on the results.

The advantages offered by this new link between surgery and radiology include:

4 high-precision operating procedures because the results are controlled directly, 4 the possibility of avoiding secondary operations, 4 effective use for neuronavigation.

Another advantage of using the AWIGS system in neurosurgery comes from the radiolucent head plate units. The patient's head can be adjusted to the ideal position for the operation. To take a CT scan during the operation, the pa-

O Fig. 6.22. Transferring the transfer board with patient onto the AWIGS operating table

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