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| MOPCP015 | Status of the HZB# Cyclotron: Eye Tumour Therapy in Berlin | 75 |
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The ion beam laboratory ISL at the Hahn-Meitner-Institut Berlin supplied light to heavy ions for solid state physics and medicine. Since 1998, eye tumours are treated with protons together with the University Hospital Benjamin Franklin, Charité. In 12/2006, ISL was closed and a Charité - HMI agreement was signed to continue the tumour therapy, to this day the only facility in Germany for eye treatments. We have now experienced the first three years under the new terms; treating more than 600 patients in that time. The main challenge is to supply protons for therapy with less man-power but keeping the same high reliability as before. A new injector for protons has been installed and commissioned. The conversion process is not yet finished. In general, the operation of the machine went smoothly. Only in spring last year, we had for the first time an interruption of the therapy due to a water leak in the RF system. In spite of major structural changes we could keep a high quality standard and even increased the number of treated patients per year. In addition to the routine treatment, we established proton therapy of ocular tumours for very young children under general anaesthesia.
# The new Helmholtz-Zentrum Berlin für Materialien und Energie has been formed by the merger of the former Hahn-Meitner-Institut Berlin (HMI) and the Berlin electron synchrotron BESSY |
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| FRM1CCO05 | Advocacy for a Dedicated 70 MeV Proton Therapy Facility | 416 |
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| Since 1998 we treated more then 1500 patients with eye tumors at the HZB cyclotron with a 68 MeV proton beam. The 5 years follow up shows a tumor control rate of more then 96%. The combination of a CT/MRT based planning and excellent physical beam conditions like 2 nA in the scattered proton beam, a 0.94 mm distal dose fall-off and a dose penumbra of 2.1 mm offers the opportunity to keep side effects on a lowest level. However all new medical proton facilities are equipped with accelerators delivering beams of 230 MeV and more. While this is needed for deep seated tumors, a lot of physical and medical compromises have to be accepted for the treatment of shallow seated tumors like eye melanomas. Hence, we suggest a 70 MeV proton therapy facility. It should be equipped with a horizontal beam line and can have optionally a vertical line for more complicated cases under anesthetics or for biological experiments. By the use of PBO Lab and MCNPX beam line concepts and a radio-protecting architecture are designed. In Germany we see a definite need for a single low energy facility which guarantees the excellence of proton therapy for the need of 80 million people. | ||
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Slides FRM1CCO05 [1.881 MB] | |