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SU‐E‐T‐515: Implementation of Gated Beam Delivery at the Heidelberg Ion‐Beam Therapy Center
Author(s) -
Gemmel A,
Naumann J,
Panse R,
Knobloch Avon,
Rietzel E
Publication year - 2011
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.3612468
Subject(s) - gating , beam (structure) , ionization chamber , detector , ion beam , dosimetry , particle therapy , particle beam , optics , physics , materials science , ion , nuclear medicine , medicine , ionization , physiology , quantum mechanics
Purpose: Gated beam delivery was successfully implemented for research purposes at the Heidelberg Ion‐Beam Therapy Center (HIT). Basic functionality of gating with scanned ion beams was tested in comparison to non‐gated beam delivery. Methods: The therapy control system and the user control system were upgraded to interface with the Anzai® Respiratory Gating system. Basic features of the implementation were tested. A Bragg‐ Peak chamber served as a detector for measuring the dosimetric precision of single beam spots. Delay times for pausing and resuming the beam delivery were measured using a pulse detector. Results: No relevant differences were obtained for the particle numbers of beam spots delivered with or without interruptions due to gating. Measured delay times for pausing and resuming beam delivery were about 250μs and 25ms, respectively Conclusions: Gating is available for research purposes at HIT by use of the Anzai System. Gated beam delivery with scanned ion beams shows very good performance in dosimetric and delay time measurements. This work is supported by Siemens Healthcare Sector, Particle Therapy.