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Sarrut D, Etxebeste A, Létang JM. A photon source model for alpha-emitter radionuclides. Phys Med Biol 2024; 69:095009. [PMID: 38537308 DOI: 10.1088/1361-6560/ad3881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/27/2024] [Indexed: 04/18/2024]
Abstract
Objective.A Monte Carlo virtual source model named PHID (photon from Ion decay) that generates photons emitted in the complex decay chain process of alpha-emitter radionuclides is proposed, typically for use during the simulation of SPECT image acquisition.Approach.Given an alpha-emitter radionuclide, the PHID model extracts from Geant4 databases the photon emission lines from all decaying daughters for both isometric transition and atomic relaxation processes. According to a given time range, abundances and activities in the decay chain are considered thanks to the Bateman equations, taking into account the decay rates and the initial abundances.Main results.PHID is evaluated by comparison with analog Monte Carlo simulation. It generates photons with the correct energy and temporal distribution, avoiding the costly simulation of the complete decay chain thus decreasing the computation time. The exact time gain depends on the simulation setup. As an example, it is 30× faster for simulating 1 MBq of225Ac in water for 1 section Moreover, for225Ac, PHID was also compared to a simplified source model with the two main photon emission lines (218 and 440 keV). PHID shows that 2 times more particles are simulated and 60% more counts are detected in the images.Significance.PHID can simulate any alpha-emitter radionuclide available in the Geant4 database. As a limitation, photons emitted from Bremsstrahlung are ignored, but they represent only 0.7% of the photons above 30 keV and are not significant for SPECT imaging. PHID is open-source, available in GATE 10, and eases the investigation of imaging photon emission from alpha emitters.
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Affiliation(s)
- D Sarrut
- CREATIS; CNRS UMR5220; Inserm U1044; INSA-Lyon; Université Lyon 1; Centre Léon Bérard, France
| | - A Etxebeste
- CREATIS; CNRS UMR5220; Inserm U1044; INSA-Lyon; Université Lyon 1; Centre Léon Bérard, France
| | - J M Létang
- CREATIS; CNRS UMR5220; Inserm U1044; INSA-Lyon; Université Lyon 1; Centre Léon Bérard, France
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Nanos T, Plachouris D, Papadimitroulas P, Papathanasiou N, Vergnaud L, Sarrut D, Kagadis G. DOSIMETRY EVALUATION OF 177Lu-DOTATATE FOR TREATING mNETS USING AS PRE-TREATMENT GUIDANCE 68Ga-DOTATOC PET/CT IMAGING. Phys Med 2022. [DOI: 10.1016/s1120-1797(22)03049-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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di Franco F, Baudier T, Gassa F, Pommier P, Sarrut D, Biston M. PO-1707 Time-dependent margins for prostate intrafraction motion during hypofractionated radiotherapy. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03671-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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di Franco F, Baudier T, Gassa F, Sarrut D, Biston M. Dosimetric impact of intrafraction motion during moderate hypo-fractionated prostate cancer radiotherapy treatment. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00133-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Claude L, Isnardi V, Schiffler C, Metzger S, Martel-Lafay I, Rit S, Sarrut D, Baudier T, Ayadi M. PH-0271 Mid-p strategy versus ITV strategy in locally advanced lung cancer. A randomized phase II study. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07286-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Etxebeste A, Dauvergne D, Fontana M, Létang JM, Llosá G, Munoz E, Oliver JF, Testa É, Sarrut D. Erratum: CCMod: a GATE module for Compton camera imaging simulation (2020 Phys. Med. Biol.65055004). Phys Med Biol 2021; 66. [PMID: 34096891 DOI: 10.1088/1361-6560/ac0291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 05/18/2021] [Indexed: 11/11/2022]
Affiliation(s)
- A Etxebeste
- Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, France
| | - D Dauvergne
- LPSC, Université Grenoble-Alpes, CNRS/IN2P3 UMR 5821, Grenoble, France
| | - M Fontana
- Univ. Lyon, Univ. Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, F-69622 Villeurbanne, France
| | - J M Létang
- Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, France
| | - G Llosá
- Instituto de Física Corpuscular, CSIC/Universitat de València, Valencia, Spain
| | - E Munoz
- Instituto de Física Corpuscular, CSIC/Universitat de València, Valencia, Spain
| | - J F Oliver
- Instituto de Física Corpuscular, CSIC/Universitat de València, Valencia, Spain
| | - É Testa
- Univ. Lyon, Univ. Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, F-69622 Villeurbanne, France
| | - D Sarrut
- Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, France
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Sarrut D, Etxebeste A, Krah N, Létang JM. Modeling complex particles phase space with GAN for Monte Carlo SPECT simulations: a proof of concept. Phys Med Biol 2021; 66:055014. [PMID: 33477121 DOI: 10.1088/1361-6560/abde9a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A method is proposed to model by a generative adversarial network the distribution of particles exiting a patient during Monte Carlo simulation of emission tomography imaging devices. The resulting compact neural network is then able to generate particles exiting the patient, going towards the detectors, avoiding costly particle tracking within the patient. As a proof of concept, the method is evaluated for single photon emission computed tomography (SPECT) imaging and combined with another neural network modeling the detector response function (ARF-nn). A complete rotating SPECT acquisition can be simulated with reduced computation time compared to conventional Monte Carlo simulation. It also allows the user to perform simulations with several imaging systems or parameters, which is useful for imaging system design.
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Affiliation(s)
- D Sarrut
- Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, Centre Léon Bérard 69373, France
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Grevillot L, Boersma DJ, Fuchs H, Aitkenhead A, Elia A, Bolsa M, Winterhalter C, Vidal M, Jan S, Pietrzyk U, Maigne L, Sarrut D. Technical Note: GATE‐RTion: a GATE/Geant4 release for clinical applications in scanned ion beam therapy. Med Phys 2020; 47:3675-3681. [DOI: 10.1002/mp.14242] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/15/2020] [Accepted: 05/03/2020] [Indexed: 11/09/2022] Open
Affiliation(s)
- L. Grevillot
- MedAustron Ion Therapy Center Marie Curie‐Straße 5A‐2700Wiener Neustadt Austria
| | - D. J. Boersma
- MedAustron Ion Therapy Center Marie Curie‐Straße 5A‐2700Wiener Neustadt Austria
- ACMIT Gmbh Viktor‐Kaplan‐Straße 2/1A‐2700Wiener Neustadt Austria
| | - H Fuchs
- MedAustron Ion Therapy Center Marie Curie‐Straße 5A‐2700Wiener Neustadt Austria
- Medical University of Vienna Vienna Austria
- Department of Radiation Therapy Medical University of Vienna/AKH Vienna Vienna Austria
| | - A. Aitkenhead
- Division of Cancer Sciences University of ManchesterManchester Cancer Research CentreThe Christie NHS Foundation Trust Manchester UK
| | - A. Elia
- MedAustron Ion Therapy Center Marie Curie‐Straße 5A‐2700Wiener Neustadt Austria
| | - M. Bolsa
- MedAustron Ion Therapy Center Marie Curie‐Straße 5A‐2700Wiener Neustadt Austria
| | - C. Winterhalter
- Division of Cancer Sciences University of ManchesterThe Christie NHS Foundation Trust Manchester UK
| | - M. Vidal
- Centre Antoine LACASSAGNE Université Côte d’Azur – Fédération Claude Lalanne Nice France
| | - S. Jan
- UMR BioMaps CEACNRSInsermUniversité Paris‐Saclay 4 place du Général Leclerc91401Orsay France
| | | | - L. Maigne
- Université Clermont AuvergneCNRS/IN2P3Laboratoire de Physique de Clermont, UMR6533 4 avenue Blaise Pascal TSA 60026 CS60026 63178Aubière cedex France
| | - D. Sarrut
- Université de LyonCREATISCNRS UMR5220Inserm U1044INSA‐LyonUniversité Lyon 1 Lyon France
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Ayadi M, Baudier T, Bouilhol G, Dupuis P, Boissard P, Pinho R, Krason A, Rit S, Claude L, Sarrut D. Mid-position treatment strategy for locally advanced lung cancer: a dosimetric study. Br J Radiol 2020; 93:20190692. [PMID: 32293191 PMCID: PMC10993224 DOI: 10.1259/bjr.20190692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 03/20/2020] [Accepted: 03/30/2020] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE The internal target volume (ITV) strategy generates larger planning target volumes (PTVs) in locally advanced non-small cell lung cancer (LA-NSCLC) than the Mid-position (Mid-p) strategy. We investigated the benefit of the Mid-p strategy regarding PTV reduction and dose to the organs at risk (OARs). METHODS 44 patients with LA-NSCLC were included in a randomized clinical study to compare ITV and Mid-p strategies. GTV were delineated by a physician on maximum intensity projection images and on Mid-p images from four-dimensional CTs. CTVs were obtained by adding 6 mm uniform margin for microscopic extension. CTV to PTV margins were calculated using the van Herk's recipe for setup and delineation errors. For the Mid-p strategy, the mean target motion amplitude was added as a random error. For both strategies, three-dimensional conformal plans delivering 60-66 Gy to PTV were performed. PTVs, dose-volume parameters for OARs (lung, esophagus, heart, spinal cord) were reported and compared. RESULTS With the Mid-p strategy, the median of volume reduction was 23.5 cm3 (p = 0.012) and 8.8 cm3 (p = 0.0083) for PTVT and PTVN respectively; the median mean lung dose reduction was 0.51 Gy (p = 0.0057). For 37.1% of the patients, delineation errors led to smaller PTV with the ITV strategy than with the Mid-p strategy. CONCLUSION PTV and mean lung dose were significantly reduced using the Mid-p strategy. Delineation uncertainty can unfavorably impact the advantage. ADVANCES IN KNOWLEDGE To the best of our knowledge, this is the first dosimetric comparison study between ITV and Mid-p strategies for LA-NSCLC.
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Affiliation(s)
- M. Ayadi
- Radiotherapy and Physics Department, Leon Berard Cancer Center,
28, rue Laennec F-69373, Lyon,
France
| | - T. Baudier
- Univ Lyon, INSA-Lyon, Université Lyon 1, CNRS, Inserm,
Centre Léon Bérard, CREATIS UMR 5220, U1206,
F-69373, Lyon,
France
| | - G. Bouilhol
- Department of Radiotherapy, Hartmann Radiotherapy Center,
American Hospital of Paris,
Neuilly, France
| | - P. Dupuis
- Radiotherapy and Physics Department, Leon Berard Cancer Center,
28, rue Laennec F-69373, Lyon,
France
| | - P. Boissard
- Radiotherapy and Physics Department, Leon Berard Cancer Center,
28, rue Laennec F-69373, Lyon,
France
| | - R. Pinho
- Univ Lyon, INSA-Lyon, Université Lyon 1, CNRS, Inserm,
Centre Léon Bérard, CREATIS UMR 5220, U1206,
F-69373, Lyon,
France
| | - A. Krason
- Univ Lyon, INSA-Lyon, Université Lyon 1, CNRS, Inserm,
Centre Léon Bérard, CREATIS UMR 5220, U1206,
F-69373, Lyon,
France
| | - S. Rit
- Univ Lyon, INSA-Lyon, Université Lyon 1, CNRS, Inserm,
Centre Léon Bérard, CREATIS UMR 5220, U1206,
F-69373, Lyon,
France
| | - L. Claude
- Radiotherapy and Physics Department, Leon Berard Cancer Center,
28, rue Laennec F-69373, Lyon,
France
| | - D. Sarrut
- Univ Lyon, INSA-Lyon, Université Lyon 1, CNRS, Inserm,
Centre Léon Bérard, CREATIS UMR 5220, U1206,
F-69373, Lyon,
France
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Etxebeste A, Dauvergne D, Fontana M, Létang JM, Llosá G, Munoz E, Oliver JF, Testa É, Sarrut D. CCMod: a GATE module for Compton camera imaging simulation. Phys Med Biol 2020; 65:055004. [DOI: 10.1088/1361-6560/ab6529] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sarrut D, Krah N, Létang JM. Generative adversarial networks (GAN) for compact beam source modelling in Monte Carlo simulations. ACTA ACUST UNITED AC 2019; 64:215004. [DOI: 10.1088/1361-6560/ab3fc1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sarrut D, Simon R, Myriam A, Line C, Thomas B, Jean-Noel B, Anne-Laure G. SP-0135 Working with radiotherapy from the perspective of data/computer scientist. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30555-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Vogin G, Wambersie A, Pötter R, Beuve M, Combs SE, Magrin G, Mayer R, Mock U, Sarrut D, Schreiner T, Fossati P, Balosso J. Concepts and terms for dose/volume parameters in carbon-ion radiotherapy: Conclusions of the ULICE taskforce. Cancer Radiother 2018; 22:802-809. [PMID: 30327228 DOI: 10.1016/j.canrad.2017.11.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 11/24/2017] [Accepted: 11/29/2017] [Indexed: 01/24/2023]
Abstract
PURPOSE The Union of Light Ion Centers in Europe (ULICE) program addressed the need for uniting scientific results for carbon-ion radiation therapy obtained by several institutions worldwide in different fields of excellence, and translating them into a real benefit to the community. Particularly, the concepts for dose/volume parameters developed in photon radiotherapy cannot be extrapolated to high linear energy transfer particles. METHODS AND MATERIALS The ULICE-WP2 taskforce included radiation oncologists involved in carbon-ion radiation therapy and International Commission on Radiation Units and Measurements, radiation biologists, expert physicists in the fields of carbon-ion radiation therapy, microdosimetry, biological modeling and image-guided radiotherapy. Consensual reports emerged from multiple discussions within both the restricted group and the wider ULICE community. Public deliverables were produced and disseminated to the European Commission. RESULTS Here we highlight the disparity in practices between treating centers, then address the main topics to finally elaborate specific recommendations. Although it appears relatively simple to add geometrical margins around the clinical target volume to obtain the planning target volume as performed in photon radiotherapy, this procedure is not appropriate for carbon-ion radiation therapy. Due to the variation of the radiation quality in depth, there is no generic relative biological effectiveness value for carbon-ions outside of an isolated point, for a given fractionation and specific experimental conditions. Absorbed dose and "equieffective dose" for specified conditions must always be reported. CONCLUSIONS This work contributed to the development of standard operating procedures for carbon-ion radiation therapy clinical trials. These procedures are now being applied, particularly in the first phase III international, multicenter trial (PHRC Étoile).
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Affiliation(s)
- G Vogin
- Département de radiothérapie, institut de cancérologie de Lorraine Alexis-Vautrin, 54519 Vandœuvre-lès-Nancy cedex, France; CNRS, UMR 7365, ingénierie moléculaire et physiopathologie articulaire (Imopa), 54505 Vandœuvre-lès-Nancy cedex, France; Université de Lorraine, 54505 Vandoeuvre-lès-Nancy, France.
| | - A Wambersie
- Institut de recherche expérimentale et clinique (Irec), Molecular Imaging, Radiotherapy and Oncology (MIRO), cliniques universitaires Saint-Luc, 1200 Brussels, Belgium; Université catholique de Louvain (UCL), 1348 Louvain-la-Neuve, Belgium
| | - R Pötter
- Department of Radiotherapy, Comprehensive Cancer Center, Vienna, Austria; Medical University of Vienna, Vienna, Austria
| | - M Beuve
- Université Lyon 1, 69100 Villeurbanne, France; Institut de physique nucléaire de Lyon, 69622 Villeurbanne cedex, France
| | - S E Combs
- Klinik und Poliklinik für RadioOnkologie und Strahlentherapie, Technische Universität München (TUM), 81675 München, Germany; Instituts für Innovative Radiotherapie (iRT), Helmholtz Zentrum München, 85764 Oberschleißheim, Germany
| | - G Magrin
- EBG MedAustron GmbH, 2700 Wiener-Neustadt, Austria
| | - R Mayer
- EBG MedAustron GmbH, 2700 Wiener-Neustadt, Austria
| | - U Mock
- EBG MedAustron GmbH, 2700 Wiener-Neustadt, Austria
| | - D Sarrut
- Université Lyon 1, 69100 Villeurbanne, France; CNRS, UMR 5220 Laboratoire Creatis, 69100 Villeurbanne, France; Inserm, U1044 Laboratoire Creatis, 69100 Villeurbanne, France
| | - T Schreiner
- EBG MedAustron GmbH, 2700 Wiener-Neustadt, Austria
| | - P Fossati
- Università di Milano-Medicina e Chirurgia, Milano, Italy; Fondazione CNAO (Centro Nazionale di Adroterapia Oncologica), Pavia, Italy
| | - J Balosso
- Service de cancérologie-radiothérapie, hôpital Albert-Michallon, CHU Grenoble Alpes, 38043 Grenoble cedex 09, France; IPNL, France Hadron national research infrastructure, 69000 Lyon, France; Université Grenoble Alpes, 38400 Saint-Martin-d'Hères, France
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Sarrut D, Krah N, Badel JN, Létang JM. Learning SPECT detector angular response function with neural network for accelerating Monte-Carlo simulations. ACTA ACUST UNITED AC 2018; 63:205013. [DOI: 10.1088/1361-6560/aae331] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cajgfinger T, Rit S, Létang JM, Halty A, Sarrut D. Fixed forced detection for fast SPECT Monte-Carlo simulation. ACTA ACUST UNITED AC 2018; 63:055011. [DOI: 10.1088/1361-6560/aa9e32] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Halty A, Badel J, Sarrut D. 38. Image-based SPECT calibration based on the Fraction of Activity in Field of view (FAF). Phys Med 2017. [DOI: 10.1016/j.ejmp.2017.10.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Ayadi-Zahra M, Baudier T, Tanguy R, Gnep K, Serrand J, Lapierre A, Kotzki L, Brahmi T, Carrie C, Rit S, Claude L, Sarrut D. 24. Does Mid-P CT image decrease inter-observer variability compared to MIP CT image? Phys Med 2017. [DOI: 10.1016/j.ejmp.2017.10.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Kochebina O, Halty A, Boumedine JS, Kryza D, Janier M, Baudier T, Mory C, Rit S, Sarrut D. 28. Towards quantification of Gd-nanoparticles concentration with SPECT. Phys Med 2017. [DOI: 10.1016/j.ejmp.2017.10.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Costa G, Bonifácio D, Sarrut D, Cajgfinger T, Bardiès M. Optimization of GATE simulations for whole-body planar scintigraphic acquisitions using the XCAT male phantom with 177 Lu-DOTATATE biokinetics in a Siemens Symbia T2. Phys Med 2017; 42:292-297. [DOI: 10.1016/j.ejmp.2017.07.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 06/30/2017] [Accepted: 07/07/2017] [Indexed: 11/29/2022] Open
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Elia A, Grevillot L, Carlino A, Böhlen T, Fuchs H, Stock M, Sarrut D. EP-1504: Monte Carlo modeling of non-isocentric proton pencil beam scanning treatments. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31939-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Pommier P, Fargier-Voiron M, Delcoudert L, Gorsse C, Munoz A, Sarrut D, Biston M. Radiothérapie guidée par l’imagerie ultrasons pour les cancers de la prostate : repositionnement et suivi des mouvements pendant la séance par l’échographie transpérinéale. Cancer Radiother 2016. [DOI: 10.1016/j.canrad.2016.08.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Noblet C, Chiavassa S, Smekens F, Sarrut D, Passal V, Suhard J, Lisbona A, Paris F, Delpon G. Validation of fast Monte Carlo dose calculation in small animal radiotherapy with EBT3 radiochromic films. Phys Med Biol 2016; 61:3521-35. [DOI: 10.1088/0031-9155/61/9/3521] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fargier-Voiron M, Pommier P, Rit S, Sarrut D, Biston M. EP-1750: Monitoring of intra-fraction prostate motion with a new 4D ultrasound device. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)33001-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Huisman B, Létang J, Testa É, Sarrut D. Accelerated Prompt Gamma estimation for clinical Proton Therapy simulations. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30106-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Vidal M, De Marzi L, Szymanowski H, Guinement L, Nauraye C, Hierso E, Freud N, Ferrand R, François P, Sarrut D. An empirical model for calculation of the collimator contamination dose in therapeutic proton beams. Phys Med Biol 2016; 61:1532-45. [PMID: 26816191 DOI: 10.1088/0031-9155/61/4/1532] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Collimators are used as lateral beam shaping devices in proton therapy with passive scattering beam lines. The dose contamination due to collimator scattering can be as high as 10% of the maximum dose and influences calculation of the output factor or monitor units (MU). To date, commercial treatment planning systems generally use a zero-thickness collimator approximation ignoring edge scattering in the aperture collimator and few analytical models have been proposed to take scattering effects into account, mainly limited to the inner collimator face component. The aim of this study was to characterize and model aperture contamination by means of a fast and accurate analytical model. The entrance face collimator scatter distribution was modeled as a 3D secondary dose source. Predicted dose contaminations were compared to measurements and Monte Carlo simulations. Measurements were performed on two different proton beam lines (a fixed horizontal beam line and a gantry beam line) with divergent apertures and for several field sizes and energies. Discrepancies between analytical algorithm dose prediction and measurements were decreased from 10% to 2% using the proposed model. Gamma-index (2%/1 mm) was respected for more than 90% of pixels. The proposed analytical algorithm increases the accuracy of analytical dose calculations with reasonable computation times.
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Affiliation(s)
- M Vidal
- Institut Curie: Centre de Protonthérapie d'Orsay, 91400 Orsay, France. Dosisoft, 94230 Cachan, France
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27
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Guillet L, Fargier-Voiron M, Sarrut D, Biston MC. Evaluation of intrafraction motions with a transperineal ultrasound imaging system: Dosimetric impact for prostate cancer. Phys Med 2015. [DOI: 10.1016/j.ejmp.2015.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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28
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El Kanawati W, Létang JM, Dauvergne D, Pinto M, Sarrut D, Testa É, Freud N. Monte Carlo simulation of prompt γ-ray emission in proton therapy using a specific track length estimator. Phys Med Biol 2015; 60:8067-86. [PMID: 26425853 DOI: 10.1088/0031-9155/60/20/8067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A Monte Carlo (MC) variance reduction technique is developed for prompt-γ emitters calculations in proton therapy. Prompt-γ emitted through nuclear fragmentation reactions and exiting the patient during proton therapy could play an important role to help monitoring the treatment. However, the estimation of the number and the energy of emitted prompt-γ per primary proton with MC simulations is a slow process. In order to estimate the local distribution of prompt-γ emission in a volume of interest for a given proton beam of the treatment plan, a MC variance reduction technique based on a specific track length estimator (TLE) has been developed. First an elemental database of prompt-γ emission spectra is established in the clinical energy range of incident protons for all elements in the composition of human tissues. This database of the prompt-γ spectra is built offline with high statistics. Regarding the implementation of the prompt-γ TLE MC tally, each proton deposits along its track the expectation of the prompt-γ spectra from the database according to the proton kinetic energy and the local material composition. A detailed statistical study shows that the relative efficiency mainly depends on the geometrical distribution of the track length. Benchmarking of the proposed prompt-γ TLE MC technique with respect to an analogous MC technique is carried out. A large relative efficiency gain is reported, ca. 10(5).
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Affiliation(s)
- W El Kanawati
- CREATIS, Université de Lyon, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, Centre Léon Bérard, 69007 Lyon, France
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29
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Fargier-Voiron M, Guillet L, Pommier P, Sarrut D, Biston M. MO-DE-210-04: Repositioning and Monitoring of Prostate Cancer Radiotherapy with a New 4D Ultrasound Intra-Modality IGRT Device. Med Phys 2015. [DOI: 10.1118/1.4925366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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30
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Fassi A, Ciardo D, Riboldi M, Sarrut D, Baroni G. OC-0549: Improving the clinical applicability of markerless lung tumour tracking with contrast-enhanced kV imaging. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40544-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Fargier-Voiron M, Presles B, Pommier P, Rit S, Sarrut D, Biston M. PO-0987: Ultrasound image guided radiotherapy for prostate cancer using a transperineal probe. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40979-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Baldacci F, Mittone A, Bravin A, Coan P, Delaire F, Ferrero C, Gasilov S, Létang J, Sarrut D, Smekens F, Freud N. A track length estimator method for dose calculations in low-energy X-ray irradiations: implementation, properties and performance. Z Med Phys 2015; 25:36-47. [DOI: 10.1016/j.zemedi.2014.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 03/17/2014] [Accepted: 04/15/2014] [Indexed: 10/25/2022]
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33
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Fargier-Voiron M, Bolsa-Ferruz M, Presles B, Pommier P, Munoz A, Rit S, Sarrut D, Biston MC. Feasibility of image guided radiotherapy based on ultrasound modality for prostate inter and intra fraction motion. Phys Med 2014. [DOI: 10.1016/j.ejmp.2014.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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34
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Bolsa Ferruz M, Fargier-Voiron M, Presles B, Pommier P, Sarrut D, Biston MC. Adaptation of treatment margins for hypofractionated radiotherapy of prostate cancer. Phys Med 2014. [DOI: 10.1016/j.ejmp.2014.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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35
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Smekens F, Létang JM, Noblet C, Chiavassa S, Delpon G, Freud N, Rit S, Sarrut D. Split exponential track length estimator for Monte-Carlo simulations of small-animal radiation therapy. Phys Med Biol 2014; 59:7703-15. [DOI: 10.1088/0031-9155/59/24/7703] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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36
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Rit S, Vila Oliva M, Brousmiche S, Labarbe R, Sarrut D, Sharp GC. The Reconstruction Toolkit (RTK), an open-source cone-beam CT reconstruction toolkit based on the Insight Toolkit (ITK). ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/489/1/012079] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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37
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Hilaire E, Robert C, Lojacono X, Sarrut D, Buvat I, Peyrin F, Maxim V. 87: Compton imaging in proton therapy: reconstructed images compared to simulated prompt-γ distribution. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)34108-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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38
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Fassi A, Seregni M, Riboldi M, Cerveri P, Sarrut D, Baroni G. 69: Intra-fraction tumor tracking based on a surrogate-driven 4D CT motion model in particle radiation therapy. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)34090-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Sarrut D, Vandemeulebroucke J, Bouilhol G, Pinho R, Delmon V, Rit S. SP-0536: Open source tools for validation of deformable registration. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30642-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Fassi A, Gerosa E, Riboldi M, Sarrut D, Baroni G. PD-0098: External-internal correlation models built from Cone-Beam CT for intrafraction tumor tracking. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30203-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Gueth P, Dauvergne D, Freud N, Létang JM, Ray C, Testa E, Sarrut D. Machine learning-based patient specific prompt-gamma dose monitoring in proton therapy. Phys Med Biol 2013; 58:4563-77. [DOI: 10.1088/0031-9155/58/13/4563] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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Fargier-Voiron M, Presles B, Munoz A, Debeaux J, Rit S, Sarrut D, Biston MC. Evaluation of an ultrasound-based imaging system for pelvic cancer localization in radiotherapy. Phys Med 2013. [DOI: 10.1016/j.ejmp.2013.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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43
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Robert C, Dedes G, Battistoni G, Böhlen TT, Buvat I, Cerutti F, Chin MPW, Ferrari A, Gueth P, Kurz C, Lestand L, Mairani A, Montarou G, Nicolini R, Ortega PG, Parodi K, Prezado Y, Sala PR, Sarrut D, Testa E. Distributions of secondary particles in proton and carbon-ion therapy: a comparison between GATE/Geant4 and FLUKA Monte Carlo codes. Phys Med Biol 2013; 58:2879-99. [DOI: 10.1088/0031-9155/58/9/2879] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Fassi A, Schaerer J, Fernandes M, Riboldi M, Sarrut D, Baroni G. OC-0335: Tumour motion tracking technique based on dynamic surface scanning and 4D CT breathing motion model. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32641-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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45
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46
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Grevillot L, Bertrand D, Dessy F, Freud N, Sarrut D. GATE as a GEANT4-based Monte Carlo platform for the evaluation of proton pencil beam scanning treatment plans. Phys Med Biol 2012; 57:4223-44. [DOI: 10.1088/0031-9155/57/13/4223] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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47
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Noblet C, Chiavassa S, Sarrut D, Paris F, Delpon G. Dosimetric impact of low energies (kV) in context of preclinical research in radiation therapy. Phys Med 2012. [DOI: 10.1016/j.ejmp.2012.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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48
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Rit S, Pinho R, Bouilhol G, Ayadi M, Biston M, Claude L, Sarrut D. PO-0795 PHASE II CLINICAL TRIAL COMPARING MID-POSITION WITH INTERNAL TARGET VOLUME TREATMENT PLANNING. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71128-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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49
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Bouilhol G, Rit S, Ayadi M, Sarrut D. OC-0393 MARGIN CALCULATION FOR TEMPORALLY ASYMMETRIC RESPIRATORY MOTION. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70732-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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50
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Grevillot L, Bertrand D, Dessy F, Freud N, Sarrut D. A Monte Carlo pencil beam scanning model for proton treatment plan simulation using GATE/GEANT4. Phys Med Biol 2011; 56:5203-19. [PMID: 21791731 DOI: 10.1088/0031-9155/56/16/008] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This work proposes a generic method for modeling scanned ion beam delivery systems, without simulation of the treatment nozzle and based exclusively on beam data library (BDL) measurements required for treatment planning systems (TPS). To this aim, new tools dedicated to treatment plan simulation were implemented in the Gate Monte Carlo platform. The method was applied to a dedicated nozzle from IBA for proton pencil beam scanning delivery. Optical and energy parameters of the system were modeled using a set of proton depth-dose profiles and spot sizes measured at 27 therapeutic energies. For further validation of the beam model, specific 2D and 3D plans were produced and then measured with appropriate dosimetric tools. Dose contributions from secondary particles produced by nuclear interactions were also investigated using field size factor experiments. Pristine Bragg peaks were reproduced with 0.7 mm range and 0.2 mm spot size accuracy. A 32 cm range spread-out Bragg peak with 10 cm modulation was reproduced with 0.8 mm range accuracy and a maximum point-to-point dose difference of less than 2%. A 2D test pattern consisting of a combination of homogeneous and high-gradient dose regions passed a 2%/2 mm gamma index comparison for 97% of the points. In conclusion, the generic modeling method proposed for scanned ion beam delivery systems was applicable to an IBA proton therapy system. The key advantage of the method is that it only requires BDL measurements of the system. The validation tests performed so far demonstrated that the beam model achieves clinical performance, paving the way for further studies toward TPS benchmarking. The method involves new sources that are available in the new Gate release V6.1 and could be further applied to other particle therapy systems delivering protons or other types of ions like carbon.
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Affiliation(s)
- L Grevillot
- Université de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, Centre Léon Bérard, Lyon, France.
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