Heidelberg 2006 – wissenschaftliches Programm

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ST: Strahlen- und Medizinphysik

ST 6: Strahlentherapie mit schnellen Ionen I

ST 6.1: Hauptvortrag

Dienstag, 14. März 2006, 10:00–10:30, D

Medical Physics aspects of the Heidelberg Heavy Ion Facility — •Oliver Jäkel — Deutsches Krebsforschungszentrum

At the German heavy ion facility GSI a pilot project for radiotherapy with a scanned beam of carbon ions is operational since 1997. Nearly 300 patients have been treated with carbon ions until the end of 2005 using the newly developed raster scan system. Many further developments in the field of medical physics will be necessary, however, before the hospital based facility at the university Heidelberg can start its clinical operation in 2007. Of special importance are the fields of dosimetry and treatment planning.

In the field of clinical dosimetry, the main task is to extend the measurement protocol developed for ionization chambers in a field of Carbon ions also to other ion species that will be used at the Heidelberg facility. Furthermore, the overall uncertainty of dose measurements, which is still higher than for conventional high energy X-ray therapy, has to be improved and efficient methods for dose verification have to be developed.

Concerning the treatment planning system the main tasks are to develop tools for fast optimization of multiple beam ports and to extend the database available for carbon ions towards the other relevant ions, like Helium, Oxygene etc.