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Commissioning of a Fast Monte Carlo Code as a Quality Assurance Tool in Krakow Proton Beam Therapy Centre

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A Rucinski

A Rucinski1*, J Gajewski2 , P Olko3 , V Patera4 , I Rinaldi5 , A Schiavi6 , (1) Institute of Nuclear Physics PAN, Krakow, Poland, (2) Institute of Nuclear Physics PAN, Krakow, Poland, (3) Institute of Nuclear Physics PAN, Krakow, Poland, (4) Sapienza University of Rome, Rome, Italy, (5) Institute of Nuclear Physics of Lyon, Lyon, France, (6) Sapienza University of Rome, Rome, Italy


SU-I-GPD-T-126 (Sunday, July 30, 2017) 3:00 PM - 6:00 PM Room: Exhibit Hall

Purpose: Monte Carlo (MC) techniques are used in proton beam therapy to support analytical calculation of dose distribution and are promising tools for patient quality assurance. Involvement of MC as treatment planning system (TPS) in clinical practice is limited by long computation time. Fred is a fast MC-TPS code capable of performing dose computations employing Graphical Processing Units (GPU) for proton therapy applications. We present preliminary results of Fred commissioning procedures at the Cyclotron Centre Bronowice (CCB) in Krakow, first polish proton beam therapy centre.

Methods: Fred (Schiavi et al. 2017, submitted to PMB) developed by the University of Rome is used to calculate 3D dose distributions of proton pencil beams in water phantom for different beam configurations. Lateral and depth dose distributions obtained with Fred are compared with the experimentally measured physical beam model data used for treatment planning in CCB Krakow proton beam therapy centre. Dose distributions computed with commercial treatment planning system, Eclipse and Fred MC code are compared.

Results: Preliminary results show well agreement of single beam and verification plan dose distribution calculated with Eclipse and Fred, indicating an accurate implementation of CCB beam model in the Fred MC-TPS code. Calculation time of dose distributions could be reduced to less than one minute using Fred on GPU.

Conclusion: Accuracy and time performance of the fast Fred MC-TPS code is promising for its application in proton beam therapy quality assurance.

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