At the University of Tübingen a Linac based stereotactic system for radiosurgery has been used since 1991. The floorstand system (SRS 200, Phillips) developed at Gainsville is used in combination with a Cosman Roberts Weels system by Radionics. The floorstand enables the gantry to be rotated vertically and the table to be rotated in the horizontal plane. Additionally, patient's movements are reduced by the fixation of the stereotactic ring to the stereotactic floorstand. We report our experience with the first 50 patients treated between December 1991 and June 1995. The patients were treated with an interdisciplinary approach. This cooperation eases the transition from radiosurgery to other methods such as embolization, operation, and other radiooncologic treatment options.
There seem to be no methodological, physical, clinical or cost reasons for using a gamma knife, especially because the trend is going towards fractionated conformation radiotherapy instead of the application of high single doses.
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