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ST: Strahlen- und Medizinphysik
ST 6: Strahlentherapie mit schnellen Ionen I
ST 6.4: Talk
Tuesday, March 14, 2006, 10:50–11:00, D
Multiple field optimization in heavy ion treatment planning - clinical aspects — •Malte Ellerbrock1, Oliver Jäkel1, Michael Krämer2, Anna Nikoghosyan3, and Daniela Schulz-Ertner3 — 1DKFZ Heidelberg — 2GSI Darmstadt — 3Univ. Clinic Heidelberg
Intensity modulated particle therapy (IMPT) evolves into a promising technology in cancer treatment. The carbon ion raster scanning technology at the GSI places high demands on treatment planning to obtain a homogeneous dose distribution in the target volume. The treatment planning software TRiP98 used so far for patient treatment optimizes different fields individually. An advanced version developed by Michael Krämer, TRiP98BEAM, allows the simultaneous optimization of multiple fields to improve the sparing of organs at risk and to enhance the conformity of the target volume.
On the way to establish the improved optimization in clinical treatment routine, a planning study is performed using actual patient data of deep seated head tumours close to critical structures. The physical dose absorbed by different tissues is compared for single and multiple field optimization using clinical quantities like dose volume statistics for organs at risk.