Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy
Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) bra...
Ausführliche Beschreibung
Autor*in: |
Daisuke Kobayashi [verfasserIn] Tomonori Isobe [verfasserIn] Kenta Takada [verfasserIn] Yutaro Mori [verfasserIn] Hideyuki Takei [verfasserIn] Hiroaki Kumada [verfasserIn] Satoshi Kamizawa [verfasserIn] Tetsuya Tomita [verfasserIn] Eisuke Sato [verfasserIn] Hiroshi Yokota [verfasserIn] Takeji Sakae [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2019 |
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Übergeordnetes Werk: |
In: Journal of Medical Physics - Wolters Kluwer Medknow Publications, 2006, 44(2019), 4, Seite 270-275 |
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Übergeordnetes Werk: |
volume:44 ; year:2019 ; number:4 ; pages:270-275 |
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Link aufrufen |
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DOI / URN: |
10.4103/jmp.JMP_117_18 |
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Katalog-ID: |
DOAJ05743865X |
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520 | |a Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) brachytherapy. Materials and Methods: To evaluate the influence of variable RBE and dose fractionation on dose distribution in proton beam therapy, the depth-dose distribution of proton therapy was compared with clinical dose, RBE-weighted dose, and equivalent dose in 2 Gy fractions using a linear-quadratic-linear model (EQD2LQL). The clinical dose was calculated by multiplying the physical dose by RBE of 1.1. The RBE-weighted dose is a biological dose that takes into account RBE variation calculated by microdosimetric kinetic model implemented in Monte Carlo code. The EQD2LQLis a biological dose that makes the RBE-weighted dose equivalent to 2 Gy using a linear-quadratic-linear (LQL) model. Finally, we evaluated the three-dimensional dose by taking into account RBE variation and LQL model for proton therapy combined with HDR brachytherapy. Results: The RBE-weighted dose increased at the distal of the spread-out Bragg peak (SOBP). With the difference in the dose fractionation taken into account, the EQD2LQLat the distal of the SOBP increased more than the RBE-weighted dose. In proton therapy combined with HDR brachytherapy, a divergence of 103% or more was observed between the conventional dose estimation method and the dose estimation method we propose. Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. | ||
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650 | 4 | |a high-dose-rate brachytherapy | |
650 | 4 | |a linear-quadratic-linear model | |
650 | 4 | |a proton therapy | |
650 | 4 | |a relative biological effectiveness | |
653 | 0 | |a Medical physics. Medical radiology. Nuclear medicine | |
700 | 0 | |a Tomonori Isobe |e verfasserin |4 aut | |
700 | 0 | |a Kenta Takada |e verfasserin |4 aut | |
700 | 0 | |a Yutaro Mori |e verfasserin |4 aut | |
700 | 0 | |a Hideyuki Takei |e verfasserin |4 aut | |
700 | 0 | |a Hiroaki Kumada |e verfasserin |4 aut | |
700 | 0 | |a Satoshi Kamizawa |e verfasserin |4 aut | |
700 | 0 | |a Tetsuya Tomita |e verfasserin |4 aut | |
700 | 0 | |a Eisuke Sato |e verfasserin |4 aut | |
700 | 0 | |a Hiroshi Yokota |e verfasserin |4 aut | |
700 | 0 | |a Takeji Sakae |e verfasserin |4 aut | |
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10.4103/jmp.JMP_117_18 doi (DE-627)DOAJ05743865X (DE-599)DOAJf2cec8990ffc4f17aba236a68aaa5a5e DE-627 ger DE-627 rakwb eng R895-920 Daisuke Kobayashi verfasserin aut Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) brachytherapy. Materials and Methods: To evaluate the influence of variable RBE and dose fractionation on dose distribution in proton beam therapy, the depth-dose distribution of proton therapy was compared with clinical dose, RBE-weighted dose, and equivalent dose in 2 Gy fractions using a linear-quadratic-linear model (EQD2LQL). The clinical dose was calculated by multiplying the physical dose by RBE of 1.1. The RBE-weighted dose is a biological dose that takes into account RBE variation calculated by microdosimetric kinetic model implemented in Monte Carlo code. The EQD2LQLis a biological dose that makes the RBE-weighted dose equivalent to 2 Gy using a linear-quadratic-linear (LQL) model. Finally, we evaluated the three-dimensional dose by taking into account RBE variation and LQL model for proton therapy combined with HDR brachytherapy. Results: The RBE-weighted dose increased at the distal of the spread-out Bragg peak (SOBP). With the difference in the dose fractionation taken into account, the EQD2LQLat the distal of the SOBP increased more than the RBE-weighted dose. In proton therapy combined with HDR brachytherapy, a divergence of 103% or more was observed between the conventional dose estimation method and the dose estimation method we propose. Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. dose fractionation high-dose-rate brachytherapy linear-quadratic-linear model proton therapy relative biological effectiveness Medical physics. Medical radiology. Nuclear medicine Tomonori Isobe verfasserin aut Kenta Takada verfasserin aut Yutaro Mori verfasserin aut Hideyuki Takei verfasserin aut Hiroaki Kumada verfasserin aut Satoshi Kamizawa verfasserin aut Tetsuya Tomita verfasserin aut Eisuke Sato verfasserin aut Hiroshi Yokota verfasserin aut Takeji Sakae verfasserin aut In Journal of Medical Physics Wolters Kluwer Medknow Publications, 2006 44(2019), 4, Seite 270-275 (DE-627)512663793 (DE-600)2236898-X 19983913 nnns volume:44 year:2019 number:4 pages:270-275 https://doi.org/10.4103/jmp.JMP_117_18 kostenfrei https://doaj.org/article/f2cec8990ffc4f17aba236a68aaa5a5e kostenfrei http://www.jmp.org.in/article.asp?issn=0971-6203;year=2019;volume=44;issue=4;spage=270;epage=275;aulast=Kobayashi kostenfrei https://doaj.org/toc/0971-6203 Journal toc kostenfrei https://doaj.org/toc/1998-3913 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 44 2019 4 270-275 |
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10.4103/jmp.JMP_117_18 doi (DE-627)DOAJ05743865X (DE-599)DOAJf2cec8990ffc4f17aba236a68aaa5a5e DE-627 ger DE-627 rakwb eng R895-920 Daisuke Kobayashi verfasserin aut Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) brachytherapy. Materials and Methods: To evaluate the influence of variable RBE and dose fractionation on dose distribution in proton beam therapy, the depth-dose distribution of proton therapy was compared with clinical dose, RBE-weighted dose, and equivalent dose in 2 Gy fractions using a linear-quadratic-linear model (EQD2LQL). The clinical dose was calculated by multiplying the physical dose by RBE of 1.1. The RBE-weighted dose is a biological dose that takes into account RBE variation calculated by microdosimetric kinetic model implemented in Monte Carlo code. The EQD2LQLis a biological dose that makes the RBE-weighted dose equivalent to 2 Gy using a linear-quadratic-linear (LQL) model. Finally, we evaluated the three-dimensional dose by taking into account RBE variation and LQL model for proton therapy combined with HDR brachytherapy. Results: The RBE-weighted dose increased at the distal of the spread-out Bragg peak (SOBP). With the difference in the dose fractionation taken into account, the EQD2LQLat the distal of the SOBP increased more than the RBE-weighted dose. In proton therapy combined with HDR brachytherapy, a divergence of 103% or more was observed between the conventional dose estimation method and the dose estimation method we propose. Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. dose fractionation high-dose-rate brachytherapy linear-quadratic-linear model proton therapy relative biological effectiveness Medical physics. Medical radiology. Nuclear medicine Tomonori Isobe verfasserin aut Kenta Takada verfasserin aut Yutaro Mori verfasserin aut Hideyuki Takei verfasserin aut Hiroaki Kumada verfasserin aut Satoshi Kamizawa verfasserin aut Tetsuya Tomita verfasserin aut Eisuke Sato verfasserin aut Hiroshi Yokota verfasserin aut Takeji Sakae verfasserin aut In Journal of Medical Physics Wolters Kluwer Medknow Publications, 2006 44(2019), 4, Seite 270-275 (DE-627)512663793 (DE-600)2236898-X 19983913 nnns volume:44 year:2019 number:4 pages:270-275 https://doi.org/10.4103/jmp.JMP_117_18 kostenfrei https://doaj.org/article/f2cec8990ffc4f17aba236a68aaa5a5e kostenfrei http://www.jmp.org.in/article.asp?issn=0971-6203;year=2019;volume=44;issue=4;spage=270;epage=275;aulast=Kobayashi kostenfrei https://doaj.org/toc/0971-6203 Journal toc kostenfrei https://doaj.org/toc/1998-3913 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 44 2019 4 270-275 |
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10.4103/jmp.JMP_117_18 doi (DE-627)DOAJ05743865X (DE-599)DOAJf2cec8990ffc4f17aba236a68aaa5a5e DE-627 ger DE-627 rakwb eng R895-920 Daisuke Kobayashi verfasserin aut Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) brachytherapy. Materials and Methods: To evaluate the influence of variable RBE and dose fractionation on dose distribution in proton beam therapy, the depth-dose distribution of proton therapy was compared with clinical dose, RBE-weighted dose, and equivalent dose in 2 Gy fractions using a linear-quadratic-linear model (EQD2LQL). The clinical dose was calculated by multiplying the physical dose by RBE of 1.1. The RBE-weighted dose is a biological dose that takes into account RBE variation calculated by microdosimetric kinetic model implemented in Monte Carlo code. The EQD2LQLis a biological dose that makes the RBE-weighted dose equivalent to 2 Gy using a linear-quadratic-linear (LQL) model. Finally, we evaluated the three-dimensional dose by taking into account RBE variation and LQL model for proton therapy combined with HDR brachytherapy. Results: The RBE-weighted dose increased at the distal of the spread-out Bragg peak (SOBP). With the difference in the dose fractionation taken into account, the EQD2LQLat the distal of the SOBP increased more than the RBE-weighted dose. In proton therapy combined with HDR brachytherapy, a divergence of 103% or more was observed between the conventional dose estimation method and the dose estimation method we propose. Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. dose fractionation high-dose-rate brachytherapy linear-quadratic-linear model proton therapy relative biological effectiveness Medical physics. Medical radiology. Nuclear medicine Tomonori Isobe verfasserin aut Kenta Takada verfasserin aut Yutaro Mori verfasserin aut Hideyuki Takei verfasserin aut Hiroaki Kumada verfasserin aut Satoshi Kamizawa verfasserin aut Tetsuya Tomita verfasserin aut Eisuke Sato verfasserin aut Hiroshi Yokota verfasserin aut Takeji Sakae verfasserin aut In Journal of Medical Physics Wolters Kluwer Medknow Publications, 2006 44(2019), 4, Seite 270-275 (DE-627)512663793 (DE-600)2236898-X 19983913 nnns volume:44 year:2019 number:4 pages:270-275 https://doi.org/10.4103/jmp.JMP_117_18 kostenfrei https://doaj.org/article/f2cec8990ffc4f17aba236a68aaa5a5e kostenfrei http://www.jmp.org.in/article.asp?issn=0971-6203;year=2019;volume=44;issue=4;spage=270;epage=275;aulast=Kobayashi kostenfrei https://doaj.org/toc/0971-6203 Journal toc kostenfrei https://doaj.org/toc/1998-3913 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 44 2019 4 270-275 |
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10.4103/jmp.JMP_117_18 doi (DE-627)DOAJ05743865X (DE-599)DOAJf2cec8990ffc4f17aba236a68aaa5a5e DE-627 ger DE-627 rakwb eng R895-920 Daisuke Kobayashi verfasserin aut Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) brachytherapy. Materials and Methods: To evaluate the influence of variable RBE and dose fractionation on dose distribution in proton beam therapy, the depth-dose distribution of proton therapy was compared with clinical dose, RBE-weighted dose, and equivalent dose in 2 Gy fractions using a linear-quadratic-linear model (EQD2LQL). The clinical dose was calculated by multiplying the physical dose by RBE of 1.1. The RBE-weighted dose is a biological dose that takes into account RBE variation calculated by microdosimetric kinetic model implemented in Monte Carlo code. The EQD2LQLis a biological dose that makes the RBE-weighted dose equivalent to 2 Gy using a linear-quadratic-linear (LQL) model. Finally, we evaluated the three-dimensional dose by taking into account RBE variation and LQL model for proton therapy combined with HDR brachytherapy. Results: The RBE-weighted dose increased at the distal of the spread-out Bragg peak (SOBP). With the difference in the dose fractionation taken into account, the EQD2LQLat the distal of the SOBP increased more than the RBE-weighted dose. In proton therapy combined with HDR brachytherapy, a divergence of 103% or more was observed between the conventional dose estimation method and the dose estimation method we propose. Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. dose fractionation high-dose-rate brachytherapy linear-quadratic-linear model proton therapy relative biological effectiveness Medical physics. Medical radiology. Nuclear medicine Tomonori Isobe verfasserin aut Kenta Takada verfasserin aut Yutaro Mori verfasserin aut Hideyuki Takei verfasserin aut Hiroaki Kumada verfasserin aut Satoshi Kamizawa verfasserin aut Tetsuya Tomita verfasserin aut Eisuke Sato verfasserin aut Hiroshi Yokota verfasserin aut Takeji Sakae verfasserin aut In Journal of Medical Physics Wolters Kluwer Medknow Publications, 2006 44(2019), 4, Seite 270-275 (DE-627)512663793 (DE-600)2236898-X 19983913 nnns volume:44 year:2019 number:4 pages:270-275 https://doi.org/10.4103/jmp.JMP_117_18 kostenfrei https://doaj.org/article/f2cec8990ffc4f17aba236a68aaa5a5e kostenfrei http://www.jmp.org.in/article.asp?issn=0971-6203;year=2019;volume=44;issue=4;spage=270;epage=275;aulast=Kobayashi kostenfrei https://doaj.org/toc/0971-6203 Journal toc kostenfrei https://doaj.org/toc/1998-3913 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 44 2019 4 270-275 |
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10.4103/jmp.JMP_117_18 doi (DE-627)DOAJ05743865X (DE-599)DOAJf2cec8990ffc4f17aba236a68aaa5a5e DE-627 ger DE-627 rakwb eng R895-920 Daisuke Kobayashi verfasserin aut Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) brachytherapy. Materials and Methods: To evaluate the influence of variable RBE and dose fractionation on dose distribution in proton beam therapy, the depth-dose distribution of proton therapy was compared with clinical dose, RBE-weighted dose, and equivalent dose in 2 Gy fractions using a linear-quadratic-linear model (EQD2LQL). The clinical dose was calculated by multiplying the physical dose by RBE of 1.1. The RBE-weighted dose is a biological dose that takes into account RBE variation calculated by microdosimetric kinetic model implemented in Monte Carlo code. The EQD2LQLis a biological dose that makes the RBE-weighted dose equivalent to 2 Gy using a linear-quadratic-linear (LQL) model. Finally, we evaluated the three-dimensional dose by taking into account RBE variation and LQL model for proton therapy combined with HDR brachytherapy. Results: The RBE-weighted dose increased at the distal of the spread-out Bragg peak (SOBP). With the difference in the dose fractionation taken into account, the EQD2LQLat the distal of the SOBP increased more than the RBE-weighted dose. In proton therapy combined with HDR brachytherapy, a divergence of 103% or more was observed between the conventional dose estimation method and the dose estimation method we propose. Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. dose fractionation high-dose-rate brachytherapy linear-quadratic-linear model proton therapy relative biological effectiveness Medical physics. Medical radiology. Nuclear medicine Tomonori Isobe verfasserin aut Kenta Takada verfasserin aut Yutaro Mori verfasserin aut Hideyuki Takei verfasserin aut Hiroaki Kumada verfasserin aut Satoshi Kamizawa verfasserin aut Tetsuya Tomita verfasserin aut Eisuke Sato verfasserin aut Hiroshi Yokota verfasserin aut Takeji Sakae verfasserin aut In Journal of Medical Physics Wolters Kluwer Medknow Publications, 2006 44(2019), 4, Seite 270-275 (DE-627)512663793 (DE-600)2236898-X 19983913 nnns volume:44 year:2019 number:4 pages:270-275 https://doi.org/10.4103/jmp.JMP_117_18 kostenfrei https://doaj.org/article/f2cec8990ffc4f17aba236a68aaa5a5e kostenfrei http://www.jmp.org.in/article.asp?issn=0971-6203;year=2019;volume=44;issue=4;spage=270;epage=275;aulast=Kobayashi kostenfrei https://doaj.org/toc/0971-6203 Journal toc kostenfrei https://doaj.org/toc/1998-3913 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 44 2019 4 270-275 |
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Daisuke Kobayashi @@aut@@ Tomonori Isobe @@aut@@ Kenta Takada @@aut@@ Yutaro Mori @@aut@@ Hideyuki Takei @@aut@@ Hiroaki Kumada @@aut@@ Satoshi Kamizawa @@aut@@ Tetsuya Tomita @@aut@@ Eisuke Sato @@aut@@ Hiroshi Yokota @@aut@@ Takeji Sakae @@aut@@ |
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Daisuke Kobayashi |
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Daisuke Kobayashi misc R895-920 misc dose fractionation misc high-dose-rate brachytherapy misc linear-quadratic-linear model misc proton therapy misc relative biological effectiveness misc Medical physics. Medical radiology. Nuclear medicine Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy |
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R895-920 Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy dose fractionation high-dose-rate brachytherapy linear-quadratic-linear model proton therapy relative biological effectiveness |
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Daisuke Kobayashi |
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Daisuke Kobayashi Tomonori Isobe Kenta Takada Yutaro Mori Hideyuki Takei Hiroaki Kumada Satoshi Kamizawa Tetsuya Tomita Eisuke Sato Hiroshi Yokota Takeji Sakae |
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establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy |
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Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy |
abstract |
Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) brachytherapy. Materials and Methods: To evaluate the influence of variable RBE and dose fractionation on dose distribution in proton beam therapy, the depth-dose distribution of proton therapy was compared with clinical dose, RBE-weighted dose, and equivalent dose in 2 Gy fractions using a linear-quadratic-linear model (EQD2LQL). The clinical dose was calculated by multiplying the physical dose by RBE of 1.1. The RBE-weighted dose is a biological dose that takes into account RBE variation calculated by microdosimetric kinetic model implemented in Monte Carlo code. The EQD2LQLis a biological dose that makes the RBE-weighted dose equivalent to 2 Gy using a linear-quadratic-linear (LQL) model. Finally, we evaluated the three-dimensional dose by taking into account RBE variation and LQL model for proton therapy combined with HDR brachytherapy. Results: The RBE-weighted dose increased at the distal of the spread-out Bragg peak (SOBP). With the difference in the dose fractionation taken into account, the EQD2LQLat the distal of the SOBP increased more than the RBE-weighted dose. In proton therapy combined with HDR brachytherapy, a divergence of 103% or more was observed between the conventional dose estimation method and the dose estimation method we propose. Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. |
abstractGer |
Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) brachytherapy. Materials and Methods: To evaluate the influence of variable RBE and dose fractionation on dose distribution in proton beam therapy, the depth-dose distribution of proton therapy was compared with clinical dose, RBE-weighted dose, and equivalent dose in 2 Gy fractions using a linear-quadratic-linear model (EQD2LQL). The clinical dose was calculated by multiplying the physical dose by RBE of 1.1. The RBE-weighted dose is a biological dose that takes into account RBE variation calculated by microdosimetric kinetic model implemented in Monte Carlo code. The EQD2LQLis a biological dose that makes the RBE-weighted dose equivalent to 2 Gy using a linear-quadratic-linear (LQL) model. Finally, we evaluated the three-dimensional dose by taking into account RBE variation and LQL model for proton therapy combined with HDR brachytherapy. Results: The RBE-weighted dose increased at the distal of the spread-out Bragg peak (SOBP). With the difference in the dose fractionation taken into account, the EQD2LQLat the distal of the SOBP increased more than the RBE-weighted dose. In proton therapy combined with HDR brachytherapy, a divergence of 103% or more was observed between the conventional dose estimation method and the dose estimation method we propose. Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. |
abstract_unstemmed |
Purpose: The purpose of this study is to evaluate the influence of variable relative biological effectiveness (RBE) of proton beam and dose fractionation has on dose distribution and to establish a new three-dimensional dose evaluation method for proton therapy combined with high-dose-rate (HDR) brachytherapy. Materials and Methods: To evaluate the influence of variable RBE and dose fractionation on dose distribution in proton beam therapy, the depth-dose distribution of proton therapy was compared with clinical dose, RBE-weighted dose, and equivalent dose in 2 Gy fractions using a linear-quadratic-linear model (EQD2LQL). The clinical dose was calculated by multiplying the physical dose by RBE of 1.1. The RBE-weighted dose is a biological dose that takes into account RBE variation calculated by microdosimetric kinetic model implemented in Monte Carlo code. The EQD2LQLis a biological dose that makes the RBE-weighted dose equivalent to 2 Gy using a linear-quadratic-linear (LQL) model. Finally, we evaluated the three-dimensional dose by taking into account RBE variation and LQL model for proton therapy combined with HDR brachytherapy. Results: The RBE-weighted dose increased at the distal of the spread-out Bragg peak (SOBP). With the difference in the dose fractionation taken into account, the EQD2LQLat the distal of the SOBP increased more than the RBE-weighted dose. In proton therapy combined with HDR brachytherapy, a divergence of 103% or more was observed between the conventional dose estimation method and the dose estimation method we propose. Conclusions: Our dose evaluation method can evaluate the EQD2LQLconsidering RBE changes in the dose distribution. |
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Establishment of a new three-dimensional dose evaluation method considering variable relative biological effectiveness and dose fractionation in proton therapy combined with high-dose-rate brachytherapy |
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https://doi.org/10.4103/jmp.JMP_117_18 https://doaj.org/article/f2cec8990ffc4f17aba236a68aaa5a5e http://www.jmp.org.in/article.asp?issn=0971-6203;year=2019;volume=44;issue=4;spage=270;epage=275;aulast=Kobayashi https://doaj.org/toc/0971-6203 https://doaj.org/toc/1998-3913 |
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