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**Harvard**

Sato, T., Watanabe, R., Sihver, L. och Niita, K. (2012) *Applications of the microdosimetric function implemented in the macroscopic particle transport simulation code PHITS*.

** BibTeX **

@article{

Sato2012,

author={Sato, T. and Watanabe, R. and Sihver, Lembit and Niita, K.},

title={Applications of the microdosimetric function implemented in the macroscopic particle transport simulation code PHITS},

journal={International Journal of Radiation Biology},

issn={0955-3002},

volume={88},

issue={1-2},

pages={143-150},

abstract={Purpose: Microdosimetric quantities such as lineal energy are generally considered to be better indices than linear energy transfer (LET) for expressing the relative biological effectiveness (RBE) of high charge and energy particles. To calculate their probability densities (PD) in macroscopic matter, it is necessary to integrate microdosimetric tools such as track-structure simulation codes with macroscopic particle transport simulation codes. Methods: As an integration approach, the mathematical model for calculating the PD of microdosimetric quantities developed based on track-structure simulations was incorporated into the macroscopic particle transport simulation code PHITS (Particle and Heavy Ion Transport code System). The improved PHITS enables the PD in macroscopic matter to be calculated within a reasonable computation time, while taking their stochastic nature into account. Applications: The microdosimetric function of PHITS was applied to biological dose estimation for charged-particle therapy and risk estimation for astronauts. The former application was performed in combination with the microdosimetric kinetic model, while the latter employed the radiation quality factor expressed as a function of lineal energy. Conclusion: Owing to the unique features of the microdosimetric function, the improved PHITS has the potential to establish more sophisticated systems for radiological protection in space as well as for the treatment planning of charged-particle therapy.},

year={2012},

keywords={Microdosimetry, RBE, radiation physics, radiotherapy, LET, radiation, protection, monte-carlo code, reference computational phantoms, dose conversion, coefficients, liquid water radiolysis, carbon-ion therapy, local effect, model, kinetic-model, heavy-ions, beam, radiation, atterjee a, 1976, radiation and environmental biophysics, v13, p215 },

}

** RefWorks **

RT Journal Article

SR Electronic

ID 154871

A1 Sato, T.

A1 Watanabe, R.

A1 Sihver, Lembit

A1 Niita, K.

T1 Applications of the microdosimetric function implemented in the macroscopic particle transport simulation code PHITS

YR 2012

JF International Journal of Radiation Biology

SN 0955-3002

VO 88

IS 1-2

SP 143

OP 150

AB Purpose: Microdosimetric quantities such as lineal energy are generally considered to be better indices than linear energy transfer (LET) for expressing the relative biological effectiveness (RBE) of high charge and energy particles. To calculate their probability densities (PD) in macroscopic matter, it is necessary to integrate microdosimetric tools such as track-structure simulation codes with macroscopic particle transport simulation codes. Methods: As an integration approach, the mathematical model for calculating the PD of microdosimetric quantities developed based on track-structure simulations was incorporated into the macroscopic particle transport simulation code PHITS (Particle and Heavy Ion Transport code System). The improved PHITS enables the PD in macroscopic matter to be calculated within a reasonable computation time, while taking their stochastic nature into account. Applications: The microdosimetric function of PHITS was applied to biological dose estimation for charged-particle therapy and risk estimation for astronauts. The former application was performed in combination with the microdosimetric kinetic model, while the latter employed the radiation quality factor expressed as a function of lineal energy. Conclusion: Owing to the unique features of the microdosimetric function, the improved PHITS has the potential to establish more sophisticated systems for radiological protection in space as well as for the treatment planning of charged-particle therapy.

LA eng

DO 10.3109/09553002.2011.611216

LK http://dx.doi.org/10.3109/09553002.2011.611216

OL 30