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Eulitz J, Lutz B, Wohlfahrt P, Dutz A, Enghardt W, Karpowitz C, Krause M, Troost EGC, Lühr A. A Monte Carlo based radiation response modelling framework to assess variability of clinical RBE in proton therapy. Phys Med Biol 2019; 64:225020. [PMID: 31374558 DOI: 10.1088/1361-6560/ab3841] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The clinical implementation of a variable relative biological effectiveness (RBE) in proton therapy is currently controversially discussed. Initial clinical evidence indicates a variable proton RBE, which needs to be verified. In this study, a radiation response modelling framework for assessing clinical RBE variability is established. It was applied to four selected glioma patients (grade III) treated with adjuvant radio(chemo)therapy and who developed late morphological image changes on T1-weighted contrast-enhanced (T1w-CE) magnetic resonance (MR) images within approximately two years of recurrence-free follow-up. The image changes were correlated voxelwise with dose and linear energy transfer (LET) values using univariable and multivariable logistic regression analysis. The regression models were evaluated by the area-under-the-curve (AUC) method performing a leave-one-out cross validation. The tolerance dose TD50 at which 50% of patient voxels experienced toxicity was interpolated from the models. A Monte Carlo (MC) model was developed to simulate dose and LET distributions, which includes variance reduction (VR) techniques to decrease computation time. Its reliability and accuracy were evaluated based on dose calculations of the clinical treatment planning system (TPS) as well as absolute dose measurements performed in the patient specific quality assurance. Morphological image changes were related to a combination of dose and LET. The multivariable models revealed cross-validated AUC values of up to 0.88. The interpolated TD50 curves decreased with increasing LET indicating an increase in biological effectiveness. The MC model reliably predicted average TPS dose within the clinical target volume as well as absolute water phantom dose measurements within 2% accuracy using dedicated VR settings. The observed correlation of dose and LET with late brain tissue damage suggests considering RBE variability for predicting chronic radiation-induced brain toxicities. The MC model simulates radiation fields in patients precisely and time-efficiently. Hence, this study encourages and enables in-depth patient evaluation to assess the variability of clinical proton RBE.
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Affiliation(s)
- J Eulitz
- Faculty of Medicine and University Hospital Carl Gustav Carus, OncoRay-National Center for Radiation Research in Oncology, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany. Faculty of Medicine and University Hospital Carl Gustav Carus, Department of Radiotherapy and Radiation Oncology, Technische Universität Dresden, Dresden, Germany. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany
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Eulitz J, Troost E, Raschke F, Schulz E, Lutz B, Dutz A, Löck S, Wohlfahrt P, Enghardt W, Karpowitz C, Krause M, Lühr A. Predicting late magnetic resonance image changes in glioma patients after proton therapy. Acta Oncol 2019; 58:1536-1539. [PMID: 31303083 DOI: 10.1080/0284186x.2019.1631477] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- J. Eulitz
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
| | - E.G.C. Troost
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany
| | - F. Raschke
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
| | - E. Schulz
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
| | - B. Lutz
- Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, Dresden, Germany
| | - A. Dutz
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
| | - S. Löck
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, Heidelberg, Germany
| | - P. Wohlfahrt
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - W. Enghardt
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - C. Karpowitz
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany
| | - M. Krause
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany
| | - A. Lühr
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine, Dresden, Germany
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology – OncoRay, Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, Heidelberg, Germany
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Dommert M, Reginatto M, Zboril M, Fiedler F, Helmbrecht S, Enghardt W, Lutz B. A Bayesian Approach for Measurements of Stray Neutrons at Proton Therapy Facilities: Quantifying Neutron Dose Uncertainty. Radiat Prot Dosimetry 2018; 180:319-323. [PMID: 29190389 DOI: 10.1093/rpd/ncx264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Indexed: 06/07/2023]
Abstract
Bonner sphere measurements are typically analyzed using unfolding codes. It is well known that it is difficult to get reliable estimates of uncertainties for standard unfolding procedures. An alternative approach is to analyze the data using Bayesian parameter estimation. This method provides reliable estimates of the uncertainties of neutron spectra leading to rigorous estimates of uncertainties of the dose. We extend previous Bayesian approaches and apply the method to stray neutrons in proton therapy environments by introducing a new parameterized model which describes the main features of the expected neutron spectra. The parameterization is based on information that is available from measurements and detailed Monte Carlo simulations. The validity of this approach has been validated with results of an experiment using Bonner spheres carried out at the experimental hall of the OncoRay proton therapy facility in Dresden.
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Affiliation(s)
- M Dommert
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, Braunschweig, Germany
| | - M Reginatto
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, Braunschweig, Germany
| | - M Zboril
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, Braunschweig, Germany
| | - F Fiedler
- Institut of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, Dresden, Germany
| | - S Helmbrecht
- Institut of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, Dresden, Germany
- Senacor Technologies AG, Berlin, Germany
| | - W Enghardt
- Institut of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, Dresden, Germany
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Fetscherstr. 74, PF 41, Dresden, Germany
| | - B Lutz
- Institut of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, Dresden, Germany
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Wohlfahrt P, Möhler C, Lalonde A, Enghardt W, Krause M, Troost E, Greilich S, Richter C. OC-0085: Improving CT calibration for proton range prediction by dual-energy CT based patient-cohort analysis. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)30395-5] [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: 11/30/2022]
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Oesten H, Von Neubeck C, Löck S, Enghardt W, Krause M, McMahon S, Grassberger C, Paganetti H, Lühr A. EP-2332: A concept to personalize radiation oncology: Predicting cell-specific survival prior to treatment. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32641-0] [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: 10/14/2022]
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Ahmad A, CG Troost E, Löck S, Enghardt W, Hölscher T, Agolli L, Valentini C, Geyer P. PO-0927: Dosimetric comparison of two planning target volume margin recipes for prostate radiotherapy. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31237-4] [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: 11/16/2022]
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Masood U, Cowan TE, Enghardt W, Hofmann KM, Karsch L, Kroll F, Schramm U, Wilkens JJ, Pawelke J. A light-weight compact proton gantry design with a novel dose delivery system for broad-energetic laser-accelerated beams. Phys Med Biol 2017; 62:5531-5555. [DOI: 10.1088/1361-6560/aa7124] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Wohlfahrt P, Möhler C, Enghardt W, Greilich S, Richter C. OC-0150: Dual-energy CT-based proton treatment planning to assess patient-specific range uncertainties. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30593-5] [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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Troost E, Menkel S, Enghardt W, Hytry J, Kunath D, Makocki S, Hoffmann A, Jølck R. EP-1710: Chemical stability of BioXmark® following normofractionated and single-fraction proton beam therapy. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)32242-9] [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: 10/19/2022]
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Rohling H, Priegnitz M, Schoene S, Schumann A, Enghardt W, Hueso-González F, Pausch G, Fiedler F. Requirements for a Compton camera forin vivorange verification of proton therapy. Phys Med Biol 2017; 62:2795-2811. [DOI: 10.1088/1361-6560/aa6068] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [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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Hueso-Gonzalez F, Pausch G, Petzoldt J, Romer KE, Enghardt W. Prompt Gamma Rays Detected With a BGO Block Compton Camera Reveal Range Deviations of Therapeutic Proton Beams. IEEE Trans Radiat Plasma Med Sci 2017. [DOI: 10.1109/tns.2016.2622162] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Priegnitz M, Barczyk S, Nenoff L, Golnik C, Keitz I, Werner T, Mein S, Smeets J, Vander Stappen F, Janssens G, Hotoiu L, Fiedler F, Prieels D, Enghardt W, Pausch G, Richter C. Towards clinical application: prompt gamma imaging of passively scattered proton fields with a knife-edge slit camera. Phys Med Biol 2016; 61:7881-7905. [PMID: 27779120 DOI: 10.1088/0031-9155/61/22/7881] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Prompt γ-ray imaging with a knife-edge shaped slit camera provides the possibility of verifying proton beam range in tumor therapy. Dedicated experiments regarding the characterization of the camera system have been performed previously. Now, we aim at implementing the prototype into clinical application of monitoring patient treatments. Focused on this goal of translation into clinical operation, we systematically addressed remaining challenges and questions. We developed a robust energy calibration routine and corresponding quality assurance protocols. Furthermore, with dedicated experiments, we determined the positioning precision of the system to 1.1 mm (2σ). For the first time, we demonstrated the application of the slit camera, which was intentionally developed for pencil beam scanning, to double scattered proton beams. Systematic experiments with increasing complexity were performed. It was possible to visualize proton range shifts of 2-5 mm with the camera system in phantom experiments in passive scattered fields. Moreover, prompt γ-ray profiles for single iso-energy layers were acquired by synchronizing time resolved measurements to the rotation of the range modulator wheel of the treatment system. Thus, a mapping of the acquired profiles to different anatomical regions along the beam path is feasible and additional information on the source of potential range shifts can be obtained. With the work presented here, we show that an application of the slit camera in clinical treatments is possible and of potential benefit.
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Affiliation(s)
- M Priegnitz
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Bautzner Landstraße 400, 01328 Dresden, Germany
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Karsch L, Beyreuther E, Enghardt W, Gotz M, Hermannsdörfer T, Krause M, Masood U, Pawelke J, Sauerbrey R, Schramm U, Schürer M, Baumann M. Development of laser-driven proton beam therapy. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw392.49] [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: 11/12/2022] Open
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Masood U, Baumann M, Cowan T, Enghardt W, Herrmannsdörfer T, Karsch L, Kroll F, Schramm U, Schürer M, Pawelke J. Status of the Development of a Novel Compact Proton Therapy Gantry System Based on Pulsed Magnets for Laser-Driven Beams. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2162] [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: 10/20/2022]
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Schumann A, Priegnitz M, Schoene S, Enghardt W, Rohling H, Fiedler F. From prompt gamma distribution to dose: a novel approach combining an evolutionary algorithm and filtering based on Gaussian-powerlaw convolutions. Phys Med Biol 2016; 61:6919-6934. [DOI: 10.1088/0031-9155/61/19/6919] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [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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Petzoldt J, Roemer KE, Enghardt W, Fiedler F, Golnik C, Hueso-González F, Helmbrecht S, Kormoll T, Rohling H, Smeets J, Werner T, Pausch G. Characterization of the microbunch time structure of proton pencil beams at a clinical treatment facility. Phys Med Biol 2016; 61:2432-56. [DOI: 10.1088/0031-9155/61/6/2432] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [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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Priegnitz M, Barczyk S, Keitz I, Mein S, Stappen F, Janssens G, Hotoiu L, Smeets J, Fiedler F, Prieels D, Enghardt W, Pausch G, Richter C. Prompt gamma imaging of passively shaped proton fields with a knife-edge slit camera. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30177-3] [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: 10/22/2022]
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Richter C, Pausch G, Barczyk S, Priegnitz M, Keitz I, Thiele J, Smeets J, Vander Stappen F, Bombelli L, Fiorini C, Hotoiu L, Perali I, Prieels D, Enghardt W, Baumann M. First clinical application of a prompt gamma based in vivo proton range verification using a knife-edge slit camera. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30184-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rohling H, Priegnitz M, Schoene S, Schumann A, Enghardt W, Golnik C, Hueso-González F, Kormoll T, Pausch G, Petzoldt J, Römer K, Fiedler F. Clinical applicability of the Compton camera for Prompt γ-ray Imaging during proton therapy. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30185-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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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Aldawood S, Bortfeldt J, Böhmer M, Castelhano I, Dedes G, Enghardt W, Fiedler F, Gernhäuser R, Golnik C, Helmbrecht S, Hueso-González F, Kolff H, Kormoll T, Lang C, Liprandi S, Lutter R, Maier L, Marinšek T, Pausch G, Petzoldt J, Pocevicius M, Römer K, Valencia Lozano I, Schaart D, Parodi K, Thirolf P. Commissioning of a Compton camera for ion beam range verification via prompt γ detection using low-energy and clinical particle beams. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30005-6] [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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Tian Y, Stützer K, Enghardt W, Priegnitz M, Helmbrecht S, Bert C, Fiedler F. Experimental investigation of irregular motion impact on 4D PET-based particle therapy monitoring. Phys Med Biol 2016; 61:N20-34. [PMID: 26733104 DOI: 10.1088/0031-9155/61/2/n20] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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
Particle therapy positron emission tomography (PT-PET) is an in vivo and non-invasive imaging technique to monitor treatment delivery in particle therapy. The inevitable patient respiratory motion during irradiation causes artefacts and inaccurate activity distribution in PET images. Four-dimensional (4D) maximum likelihood expectation maximisation (4D MLEM) allows for a compensation of these effects, but has up to now been restricted to regular motion for PT-PET investigations. However, intra-fractional motion during treatment might differ from that during acquisition of the 4D-planning CT (e.g. amplitude variation, baseline drift) and therefore might induce inaccurate 4D PET reconstruction results. This study investigates the impact of different irregular analytical one-dimensional (1D) motion patterns on PT-PET imaging by means of experiments with a radioactive source and irradiated moving phantoms. Three sorting methods, namely phase sorting, equal amplitude sorting and event-based amplitude sorting, were applied to manage the PET list-mode data. The influence of these sorting methods on the motion compensating algorithm has been analysed. The event-based amplitude sorting showed a superior performance and it is applicable for irregular motions with ⩽ 4 mm amplitude elongation and drift. For motion with 10 mm baseline drift, the normalised root mean square error was as high as 10.5% and a 10 mm range deviation was observed.
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Affiliation(s)
- Y Tian
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Fetscherstraße 74, 01307 Dresden, Germany
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Schumann A, Petzoldt J, Dendooven P, Enghardt W, Golnik C, Hueso-González F, Kormoll T, Pausch G, Roemer K, Fiedler F. Simulation and experimental verification of prompt gamma-ray emissions during proton irradiation. Phys Med Biol 2015; 60:4197-207. [DOI: 10.1088/0031-9155/60/10/4197] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [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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Masood U, Baumann M, Bussmann M, Cowan T, Enghardt W, Herrmannsdoerfer T, Hofmann K, Kaluza M, Karsch L, Kroll F, Schramm U, Schuerer M, Wilkens J, Pawelke J. Development of a Novel Compact Particle Therapy Facility With Laser Driven Ion Beams via Gantry Systems Based on Pulsed Magnets. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2596] [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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Masood U, Bussmann M, Cowan T, Enghardt W, Kaluza M, Herrmannsdoerfer T, Krause M, Pawelke J, Sauerbrey R, Schramm U, Baumann M. Development of Laser-Driven Proton Beam Therapy. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu358.3] [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: 11/12/2022] Open
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Hueso-González F, Bemmerer D, Berthel M, Biegun A, Borany J, Dendooven P, Dreyer A, Enghardt W, Fiedler F, Golnik C, Heidel K, Kormoll T, Petzoldt J, Römer K, Schmidt K, Schwengner R, Wagner A, Wagner L, Pausch G. 90: Comparison of Scintillation Detectors based on BGO and LSO for Prompt Gamma Imaging in Particle Therapy. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)34111-6] [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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Stützer K, Enghardt W, Priegnitz M, Bert C, Saito N, Parodi K, Fiedler F. 190: The (non-) detectability of failures in motion mitigated ionbeam delivery by means of in-beam PET. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)34211-0] [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: 11/17/2022]
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28
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Janssens G, Celani A, Clementel E, Fiorini C, Frizzi T, Enghardt W, Helmbrecht S, Perali I, Prieels D, Priegnitz M, Roellinghoff F, Smeets J, Stichelbaut F. 94: Precision in prompt gamma-based range monitoring of proton pencil beams in heterogeneous media. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)34115-3] [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: 11/30/2022]
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29
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30
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Lühr A, Löck S, Roth K, Just U, Krause M, Baumann M, Enghardt W. EP-1758: Particle therapy: ReCompareóindividual patient selection at nonparticleradiation institutions. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31876-4] [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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Stützer K, Bert C, Enghardt W, Helmbrecht S, Parodi K, Priegnitz M, Saito N, Fiedler F. Experimental verification of a 4D MLEM reconstruction algorithm used for in-beam PET measurements in particle therapy. Phys Med Biol 2013; 58:5085-111. [DOI: 10.1088/0031-9155/58/15/5085] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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32
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Santiago A, Jelen U, Ammazzalorso F, Engenhart-Cabilic R, Fritz P, Mühlnickel W, Enghardt W, Baumann M, Wittig A. OC-0340: Reproducibility of target coverage in stereotactic proton lung irradiation under high frequency jet ventilation. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32646-3] [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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33
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Pausch G, Enghardt W, Fiedler F. SP-0300: Prompt gamma imaging for range assessment in proton and ion therapy. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32606-2] [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: 10/23/2022]
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34
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Kuess P, Helmbrecht S, Birkfellner W, Fiedler F, Enghardt W, Hopfgartner J, Georg D. PD-0042: Automated detection of setup errors in carbon ion therapy using particle therapy PET: feasibility study. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32348-3] [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: 11/25/2022]
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Laube K, Menkel S, Bert C, Enghardt W, Helmbrecht S, Saito N, Fiedler F. 4D particle therapy PET simulation for moving targets irradiated with scanned ion beams. Phys Med Biol 2013; 58:513-33. [DOI: 10.1088/0031-9155/58/3/513] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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36
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Mueller A, Fiedler F, Georg D, Hopfgartner J, Enghardt W. PO-0805 IN-BEAM SPECT BASED IN VIVO DOSIMETRY: FROM TREATMENT PLANNING TO MEASURED DOSE. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71138-6] [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: 11/29/2022]
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37
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Kuess P, Birkfellner W, Helmbrecht S, Fiedler F, Enghardt W, Georg D. EP-1405 USING STATISTICAL MEASURES FOR AUTOMATED COMPARISON OF IN-BEAM PET DATA FOR ION BEAM THERAPY VERIFICATION. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71738-3] [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: 11/29/2022]
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38
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Schoene S, Kormoll T, Rohling H, Enghardt W, Fiedler F. 278 RECONSTRUCTING COMPTON CAMERA IMAGES FOR ION THERAPY MONITORING – CHALLENGES AND APPROACHES FACING THEM. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70241-4] [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: 10/28/2022]
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39
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Laube K, Fiedler F, Bert C, Saito N, Enghardt W. 107 RECONSTRUCTION OF 4D IN-BEAM PET DATA FOR QUALITY CONTROL OF MOVING TARGET IRRADIATION IN ION BEAM THERAPY. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70081-6] [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: 11/30/2022]
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40
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Rohling H, Fiedler F, Dersch U, Schöne S, Müller A, Golnik C, Kormoll T, Enghardt W. 113 MONTE-CARLO SIMULATION TO OPTIMIZE SPECT-HARDWARE DEDICATED TO IN-BEAM CONTROL OF PARTICLE THERAPY. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70086-5] [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: 12/01/2022]
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Kuess P, Birkfellner W, Helmbrecht S, Fiedler F, Enghardt W, Georg D. 95 AUTOMATED DETECTION OF ION BEAM MODIFICATIONS IN IN-BEAM PET IMAGES. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70071-3] [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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Fiedler F, Dersch U, Golnik C, Helmbrecht S, Kormoll T, Kunath D, Laube K, Müller A, Priegnitz M, Rohling H, Schöne S, Enghardt W. 103 TECHNIQUES FOR IMAGE BASED IN-VIVO DOSIMETRY: FROM PARTICLE THERAPY PET TO IN-BEAM PROMPT GAMMA IMAGING. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70077-4] [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: 11/25/2022]
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Laschinsky L, Baumann M, Beyreuther E, Burris-Mog T, Cowan T, Enghardt W, Kaluza M, Karsch L, Kraft S, Lessmann E, Metzkes J, Nicolai M, Oppelt M, Richter C, Schlenvoigt H, Schramm U, Schürer M, Zeil K, Pawelke J. 164 TOWARD LASER DRIVEN PROTON THERAPY: RESULTS OF THE BASIC TRANSLATIONAL STEP. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70135-4] [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: 11/16/2022]
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Helmbrecht S, Santiago A, Enghardt W, Kuess P, Fiedler F. On the feasibility of automatic detection of range deviations from in-beam PET data. Phys Med Biol 2012; 57:1387-97. [PMID: 22349491 DOI: 10.1088/0031-9155/57/5/1387] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [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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Schürer M, Baumann M, Beyreuther E, Brüchner K, Enghardt W, Kaluza M, Karsch L, Laschinsky L, Leßmann E, Nicolai M, Oppelt M, Reuter M, Richter C, Sävert A, Schnell M, Woithe J, Pawelke J. Irradiation system for pre-clinical studies with laser accelerated electrons. BIOMED ENG-BIOMED TE 2012. [DOI: 10.1515/bmt-2012-4244] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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Enghardt W. 282 INVITED Laser-Accelerated Proton Therapy. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70497-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: 10/17/2022]
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Pawelke J, Baumann M, Beyreuther E, Burris-Mog T, Cowan T, Dammene Y, Enghardt W, Kaluza M, Karsch L, Kraft S, Laschinsky L, Leβmann E, Metzkes J, Naumburger D, Nicolai M, Richter C, Schlenvoigt H, Schramm U, Schürer M, Woithe J, Zeil K. 563 speaker LASER DRIVEN ACCELERATORS FOR RADIOBIOLOGY EXPERIMENT. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70685-5] [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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Kluge T, Enghardt W, Kraft SD, Schramm U, Sentoku Y, Zeil K, Cowan TE, Sauerbrey R, Bussmann M. Efficient laser-ion acceleration from closely stacked ultrathin foils. Phys Rev E Stat Nonlin Soft Matter Phys 2010; 82:016405. [PMID: 20866745 DOI: 10.1103/physreve.82.016405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Revised: 03/23/2010] [Indexed: 05/29/2023]
Abstract
A new scheme to efficiently accelerate protons by a single linear polarized high-intensity ultrashort laser pulse using multiple ultrathin foils is proposed. The foils are stacked at a spacing comparable to their thickness and subsequently irradiated by the same laser pulse. The foil thicknesses are chosen such that the laser light pressure can displace all electrons out of the foil. The authors present a simple, yet precise dynamical model of the acceleration process from which both optimum foil thickness and spacing can be derived. Extensive two-dimensional (2D) particle-in-cell simulations verify the model predictions and suggest an enhancement of the maximum proton kinetic energy by 30% for the two-foil case compared to a single foil.
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Affiliation(s)
- T Kluge
- Forschungszentrum Dresden-Rossendorf eV, Dresden, Germany.
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Richter C, Beyreuther E, Dammene Y, Enghardt W, Kaluza M, Karsch L, Laschinsky L, Lessmann E, Naumburger D, Nicolai M, Sauerbrey R, Schienvoigt H, Schürer M, Sobiella M, Weber A, Pawelke J, Baumann M. SU-GG-T-459: Laser-Based Particle Acceleration for Future Ion Therapy: Current Status of the Joint Project OnCOOPtics with Special Focus on Beam Delivery and Dosimetry. Med Phys 2010. [DOI: 10.1118/1.3468857] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [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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50
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Beyreuther E, Enghardt W, Kaluza M, Karsch L, Laschinsky L, Lessmann E, Nicolai M, Pawelke J, Richter C, Sauerbrey R, Schlenvoigt HP, Baumann M. Establishment of technical prerequisites for cell irradiation experiments with laser-accelerated electrons. Med Phys 2010; 37:1392-400. [DOI: 10.1118/1.3301598] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [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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