Status of the 3D-online motion compensation system for ion therapy
نویسندگان
چکیده
Introduction Scanned ion beam techniques proved to be an accurate method in radiation therapy with a high degree of conformity [1]. Since 1997 the carbon ion treatment unit at GSI has treated more than 330 patients with stationary tumours using a raster scanning system. In case of moving organs, however, it is necessary to mitigate interplay between organ motion and scanned beam. In order to achieve a high conformity and a homogeneous dose distribution also for moving tumours, GSI plans to compensate the organ motion in three dimensions. A prototype compensation system was developed and has been tested in different ways [2, 3, 4].
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