FRCOBAB01
HIT, Heidelberg, Germany
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FRCOBAB01 |
Feedback and Feed-Forward Systems Improve the Reliability and Performance of the Heidelberg Ion Beam Therapy Center | |
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| The linac-synchrotron-system of the Heidelberg Ion Beam Therapy Centre (HIT) routinely delivers pencil beams to the dose delivering rasterscanning devices at 3 treatment rooms, including the worldwide first scanning ion gantry and 1 experimental cave. At HIT the quality-assured library of pencil beam parameters covers roughly 100.000 combinations of the ion, energy, intensity and beam size. In addition, the world-wide first scanning ion gantry allows for 0.1 degree entrance angle selection. Each patient-specific treatment plan defines a subset of these pencil beams being subsequently requested during the dose delivery. Aiming at shortened irradiation times, improved reliability and optimum dose-delivery precision an upgrade program making heavy use of feed-forward as well as feed-back mechanisms is under way. Driven by patient-specific data out of the scanning beam dose delivery process central synchrotron and beam transfer line components are coupled to the therapy control system in order to tailor the beam characteristics in real-time to the clinical requirements. The paper will discuss the functional upgrades and report about the impact on the medical application at HIT. | ||
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Slides FRCOBAB01 [3.656 MB] | |