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Chattaraj A, Selvam TP. Comparison of 126 MeV antiproton and proton—a FLUKA-based microdosimetric approach. Phys Med Biol 2022; 67. [DOI: 10.1088/1361-6560/ac88b4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/10/2022] [Indexed: 11/11/2022]
Abstract
Abstract
Objective. This study aims at comparing dosimetric parameters of 126 MeV antiprotons and protons using microdosimetric approach. Approach. Microdosimetric distributions of 126 MeV proton and antiproton beams at 1 μm site size are calculated using the Monte Carlo-based FLUKA code. The distributions are calculated at various depths along the central axis in water phantom as well as at different off-axis locations. The study also includes calculations of secondary radiations produced by antiprotons and protons. Mean quality factor,
Q
¯
is calculated using the ICRP 60 and ICRU 40 recommendations. The Relative Biological Effectiveness (RBE) of HSG tumour cell at 10% survival level is calculated based on Microdosimetric Kinetic Model. Main results.
Q
¯
I
C
R
P
,
Q
¯
ICRU
and RBE for antiprotons are higher by a factor of about 3.60, 3.41 and 1.24, respectively, at Bragg-peak and higher by a factor of about 1.41, 1.76 and 1.05, respectively, at plateau region of depth-dose profile when compared to protons. At 15 cm depth along the central axis,
Q
¯
ICRP
,
Q
¯
ICRU
and RBE for protons are higher by a factor of about 1.42, 1.66 and 1.26, respectively, when compared to antiprotons. At the off-axis distance (Ld
) of 6 cm (at 11.5 cm depth in water),
Q
¯
ICRP
and
Q
¯
ICRU
of protons are higher than that of antiproton whereas the trend is opposite at off-axis distance of 4 cm. At Ld
= 4 cm (at 11.5 cm depth in water), RBE of antiprotons is higher by about 4% than protons whereas at Ld
= 6 cm, RBE of protons is higher by about 13% than antiprotons. Significance. The study shows that antiproton radiotherapy is advantageous as compared to protons considering enhancements in the absorbed dose and RBE-weighed dose values at the Bragg-peak.
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2
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Van Delinder KW, Khan R, Gräfe JL. Neutron activation of gadolinium for ion therapy: a Monte Carlo study of charged particle beams. Sci Rep 2020; 10:13417. [PMID: 32770174 PMCID: PMC7414875 DOI: 10.1038/s41598-020-70429-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/28/2020] [Indexed: 12/23/2022] Open
Abstract
This study investigates the photon production from thermal neutron capture in a gadolinium (Gd) infused tumor as a result of secondary neutrons from particle therapy. Gadolinium contrast agents used in MRI are distributed within the tumor volume and can act as neutron capture agents. As a result of particle therapy, secondary neutrons are produced and absorbed by Gd in the tumor providing potential enhanced localized dose in addition to a signature photon spectrum that can be used to produce an image of the Gd enriched tumor. To investigate this imaging application, Monte Carlo (MC) simulations were performed for 10 different particles using a 5-10 cm spread out-Bragg peak (SOBP) centered on an 8 cm3, 3 mg/g Gd infused tumor. For a proton beam, 1.9 × 106 neutron captures per RBE weighted Gray Equivalent dose (GyE) occurred within the Gd tumor region. Antiprotons ([Formula: see text]), negative pions (- π), and helium (He) ion beams resulted in 10, 17 and 1.3 times larger Gd neutron captures per GyE than protons, respectively. Therefore, the characteristic photon based spectroscopic imaging and secondary Gd dose enhancement could be viable and likely beneficial for these three particles.
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Affiliation(s)
- Kurt W Van Delinder
- Department of Physics, Faculty of Science, Ryerson University, 350 Victoria St., Toronto, ON, M5B 2K3, Canada.
| | - Rao Khan
- Medical Physics Division, Department of Radiation Oncology, Washington University School of Medicine, 660 S Euclid Ave, St Louis, MO, 63110, USA
| | - James L Gräfe
- Department of Physics, Faculty of Science, Ryerson University, 350 Victoria St., Toronto, ON, M5B 2K3, Canada
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3
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Stegeby H. Overview of antiproton affinities for functional groups relevant in particle-beam cancer therapy. Cancer Rep (Hoboken) 2018. [DOI: 10.1002/cnr2.1128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Henrik Stegeby
- Department of Chemistry-Ångström, The Theoretical Chemistry Programme; Uppsala University; Uppsala Sweden
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4
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Holzscheiter MH, Alsner J, Bassler N, Boll R, Caccia M, Knudsen H, Maggiore C, Petersen JB, Sellner S, Straße T, Singers Sørensen B, Overgaard J. The relative biological effectiveness of antiprotons. Radiother Oncol 2016; 121:453-458. [PMID: 27988058 DOI: 10.1016/j.radonc.2016.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 11/30/2016] [Accepted: 12/01/2016] [Indexed: 11/25/2022]
Abstract
BACKGROUND AND PURPOSE Aside from the enhancement of physical dose deposited by antiprotons annihilating in tissue-like material compared to protons of the same range a further increase of biological effective dose has been demonstrated. This enhancement can be expressed in an increase of the relative biological effectiveness (RBE) of antiprotons near the end of range. We have performed the first-ever direct measurement of the RBE of antiprotons both at rest and in flight. MATERIALS AND METHODS Experimental data were generated on the RBE of an antiproton beam entering a tissue-like target consisting of V79 cells embedded in gelatin with an energy providing a range of approximately 10cm. RESULTS The RBE in the entrance channel (the "plateau") is only slightly above the value for a comparable proton beam, and remains low until the proximal edge of the spread-out Bragg peak (SOBP). A steep increase of RBE is seen starting from the onset of the SOBP. CONCLUSIONS This paper reports the final results of the experiment AD-4/ACE at CERN on the first-ever direct measurement of RBE of antiprotons and constitutes the first step toward developing treatment plans.
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Affiliation(s)
- Michael H Holzscheiter
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, USA; Max Planck Institute for Nuclear Physics, Heidelberg, Germany.
| | - Jan Alsner
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
| | - Niels Bassler
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark; Department of Physics and Astronomy, Aarhus University, Denmark
| | - Rebecca Boll
- Max Planck Institute for Nuclear Physics, Heidelberg, Germany
| | - Massimo Caccia
- Dipartimento di Scienza e Alta Tecnologia, Universita degli Studi dell'Insubria, Como, Italy
| | - Helge Knudsen
- Department of Physics and Astronomy, Aarhus University, Denmark
| | | | - Jørgen B Petersen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
| | - Stefan Sellner
- Max Planck Institute for Nuclear Physics, Heidelberg, Germany
| | - Tina Straße
- Max Planck Institute for Nuclear Physics, Heidelberg, Germany
| | | | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
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5
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Tavakoli MB, Reiazi R, Mohammadi MM, Jabbari K. Comparison of electromagnetic and hadronic models generated using Geant 4 with antiproton dose measured in CERN. J Med Phys 2015; 40:109-14. [PMID: 26170558 PMCID: PMC4478644 DOI: 10.4103/0971-6203.158696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 03/18/2015] [Accepted: 03/20/2015] [Indexed: 11/25/2022] Open
Abstract
After proposing the idea of antiproton cancer treatment in 1984 many experiments were launched to investigate different aspects of physical and radiobiological properties of antiproton, which came from its annihilation reactions. One of these experiments has been done at the European Organization for Nuclear Research known as CERN using the antiproton decelerator. The ultimate goal of this experiment was to assess the dosimetric and radiobiological properties of beams of antiprotons in order to estimate the suitability of antiprotons for radiotherapy. One difficulty on this way was the unavailability of antiproton beam in CERN for a long time, so the verification of Monte Carlo codes to simulate antiproton depth dose could be useful. Among available simulation codes, Geant4 provides acceptable flexibility and extensibility, which progressively lead to the development of novel Geant4 applications in research domains, especially modeling the biological effects of ionizing radiation at the sub-cellular scale. In this study, the depth dose corresponding to CERN antiproton beam energy by Geant4 recruiting all the standard physics lists currently available and benchmarked for other use cases were calculated. Overall, none of the standard physics lists was able to draw the antiproton percentage depth dose. Although, with some models our results were promising, the Bragg peak level remained as the point of concern for our study. It is concluded that the Bertini model with high precision neutron tracking (QGSP_BERT_HP) is the best to match the experimental data though it is also the slowest model to simulate events among the physics lists.
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Affiliation(s)
| | - Reza Reiazi
- Department of Medical Physics, Isfahan University of Medical Science, Isfahan, Iran
| | | | - Keyvan Jabbari
- Department of Medical Physics, Isfahan University of Medical Science, Isfahan, Iran
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6
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Ringbæk TP, Brons S, Naumann J, Ackermann B, Horn J, Latzel H, Scheloske S, Galonska M, Bassler N, Zink K, Weber U. Fluence inhomogeneities due to a ripple filter induced Moiré effect. Phys Med Biol 2015; 60:N59-69. [DOI: 10.1088/0031-9155/60/3/n59] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Toftegaard J, Petersen JB, Bassler N. PyTRiP - a toolbox and GUI for the proton/ion therapy planning system TRiP. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/489/1/012045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Antiproton induced DNA damage: proton like in flight, carbon-ion like near rest. Sci Rep 2014; 3:1770. [PMID: 23640660 PMCID: PMC3642660 DOI: 10.1038/srep01770] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Accepted: 04/12/2013] [Indexed: 02/01/2023] Open
Abstract
Biological validation of new radiotherapy modalities is essential to understand their therapeutic potential. Antiprotons have been proposed for cancer therapy due to enhanced dose deposition provided by antiproton-nucleon annihilation. We assessed cellular DNA damage and relative biological effectiveness (RBE) of a clinically relevant antiproton beam. Despite a modest LET (~19 keV/μm), antiproton spread out Bragg peak (SOBP) irradiation caused significant residual γ-H2AX foci compared to X-ray, proton and antiproton plateau irradiation. RBE of ~1.48 in the SOBP and ~1 in the plateau were measured and used for a qualitative effective dose curve comparison with proton and carbon-ions. Foci in the antiproton SOBP were larger and more structured compared to X-rays, protons and carbon-ions. This is likely due to overlapping particle tracks near the annihilation vertex, creating spatially correlated DNA lesions. No biological effects were observed at 28–42 mm away from the primary beam suggesting minimal risk from long-range secondary particles.
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9
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Hansen DC, Lühr A, Sobolevsky N, Bassler N. Optimizing SHIELD-HIT for carbon ion treatment. Phys Med Biol 2012; 57:2393-409. [DOI: 10.1088/0031-9155/57/8/2393] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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10
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Kaiser FJ, Bassler N, Tölli H, Jäkel O. Initial recombination in the track of heavy charged particles: numerical solution for air filled ionization chambers. Acta Oncol 2012; 51:368-75. [PMID: 22047061 DOI: 10.3109/0284186x.2011.626452] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Modern particle therapy facilities enable sub-millimeter precision in dose deposition. Here, also ionization chambers (ICs) are used, which requires knowledge of the recombination effects. Up to now, recombination is corrected using phenomenological approaches for practical reasons. In this study the effect of the underlying dose distribution on columnar recombination, a quantitative model for initial recombination, is investigated. MATERIAL AND METHODS Jaffé's theory, formulated in 1913 quantifies initial recombination by elemental processes, providing an analytical (closed) solution. Here, we investigate the effect of the underlying charged carrier distribution around a carbon ion track. The fundamental partial differential equation, formulated by Jaffé, is solved numerically taking into account more realistic charge carrier distributions by the use of a computer program (Gascoigne 3D). The investigated charge carrier distributions are based on track structure models, which follow a 1/r(2) behavior at larger radii and show a constant value at small radii. The results of the calculations are compared to the initial formulation and to data obtained in experiments using carbon ion beams. RESULTS The comparison between the experimental data and the calculations shows that the initial approach made by Jaffé is able to reproduce the effects of initial recombination. The amorphous track structure based charge carrier distribution does not reproduce the experimental data well. A small additional correction in the assessment of the saturation current or charge is suggested by the data. CONCLUSION The established model of columnar recombination reproduces the experimental data well, whereas the extensions using track structure models do not show such an agreement. Additionally, the effect of initial recombination on the saturation curve (i.e. Jaffé plot) does not follow a linear behavior as suggested by current dosimetry protocols, therefore higher order corrections (such as the investigated ones) might be necessary.
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11
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Bassler N, Kantemiris I, Karaiskos P, Engelke J, Holzscheiter MH, Petersen JB. Comparison of optimized single and multifield irradiation plans of antiproton, proton and carbon ion beams. Radiother Oncol 2010; 95:87-93. [DOI: 10.1016/j.radonc.2010.02.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Revised: 02/17/2010] [Accepted: 02/23/2010] [Indexed: 10/19/2022]
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12
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Paganetti H, Goitein M, Parodi K. Spread-out antiproton beams deliver poor physical dose distributions for radiation therapy. Radiother Oncol 2010; 95:79-86. [DOI: 10.1016/j.radonc.2009.03.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Revised: 03/11/2009] [Accepted: 03/14/2009] [Indexed: 11/29/2022]
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13
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Kantemiris I, Angelopoulos A, Bassler N, Giokaris N, Holzscheiter MH, Karaiskos P, Kalogeropoulos TE. Real-time imaging for dose evaluation during antiproton irradiation. Phys Med Biol 2010; 55:N123-31. [PMID: 20134083 DOI: 10.1088/0031-9155/55/5/n01] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Online monitoring of the stopping distribution of particle beams used for radiotherapy provides the possibility of detecting possible errors in dose deposition early during a given treatment session, and may therefore help to improve the quality of the therapy. Antiproton annihilation events produce several long-range secondary particles which can be detected in real time by standard high energy particle physics detector systems. In this note, Monte Carlo calculations are performed in order to study the feasibility of real-time imaging by detecting charged pions produced during antiproton irradiation of typical biological targets. A simple treatment plan in a water phantom is simulated and the results show that by detecting pi+/- the position and the size of the planned target volume can be located with precision in the order of 1 mm.
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Affiliation(s)
- I Kantemiris
- Nuclear and Particle Physics Section, Physics Department, University of Athens, Panepistimioupolis, Ilisia, 157 71 Athens, Greece.
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14
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Fahimian BP, DeMarco JJ, Keyes R, Bassler N, Iwamoto KS, Zankl M, Holzscheiter MH. Antiproton radiotherapy: peripheral dose from secondary neutrons. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s10751-009-0086-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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