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Home > ÇÐȸȰµ¿ > ±¹Á¦ÇмúÁö |
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ÀÛ¼ºÀÏ : 12-12-21 17:43
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Dae-Hyun Kim et al |
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Monte Carlo Modeling and Validation of a Proton Treatment Nozzle by Using the Geant4 Toolkit |
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Journal of the Korean Physical Society |
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61(7) |
ÆäÀÌÁö |
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1125-1130 |
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2012-10-7 |
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Abstract |
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Modern commercial treatment planning systems for proton therapy use the pencil beam algorithm
for calculating the absorbed dose. Although it is acceptable for clinical radiation treatment, the
accuracy of this method is limited. Alternatively, the Monte Carlo method, which is relatively
accurate in dose calculations, has been applied recently to proton therapy. To reduce the remaining
uncertainty in proton therapy dose calculations, in the present study, we employed Monte Carlo
simulations and the Geant4 simulation toolkit to develop a model for a of a proton treatment
nozzle. The results from a Geant4-based medical application of the proton treatment nozzle were
compared to the measured data. Simulations of the percentage depth dose profiles showed very
good agreement within 1 mm in distal range and 3 mm in modulated width. Moreover, the lateral
dose profiles showed good agreement within 3% in the central region of the field and within 10%
in the penumbra regions. In this work, we proved that the Geant4 Monte Carlo model of a proton
treatment nozzle could be used to the calculate proton dose distributions accurately. |
2012_±è´ëÇö_JKPS.pdf (276.5K) [342] DATE : 2012-12-21 17:43:22 |
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