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Putu Inten Gayatri IA, Handika AD, Wibowo WE, Fitriandini A, Fadli M, Yudi Putranto AM, Yudhi Prasada DN, Okselia A, Suharsono, Pawiro SA. 2-Dimensional IMRT dose audit: An Indonesian multicenter study. Appl Radiat Isot 2022; 188:110415. [PMID: 36027871 DOI: 10.1016/j.apradiso.2022.110415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 07/27/2022] [Accepted: 08/09/2022] [Indexed: 11/02/2022]
Abstract
Intensity modulated radiation therapy (IMRT) is an advanced technique in radiation therapy delivery. IMRT depends on the accuracy of the multileaf collimator during treatment. Hence, the actual dose distribution can deviate from the treatment planning system's calculation. This study aimed to perform a multicentre planar dosimetry audit of radiotherapy centres in Indonesia, using the structure sets from AAPM TG-119. The gamma index used to evaluate the dose distribution was 3%/3 mm and 3%/2 mm. We observed 100% gamma index passing rates mostly in the 3%/3 mm evaluations. The gamma index passing rates dropped in the 3%/2 mm analysis. Most of the radiotherapy centres participating in this audit satisfied each criterion's tolerance limit of the action level. This study may become a first result for the next multicenter IMRT audit by using a standardized protocol.
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Affiliation(s)
- Ida Ayu Putu Inten Gayatri
- Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Indonesia; Department of Radiation Oncology, MRCCC Siloam Hospitals, Jakarta, Indonesia
| | - Andrian Dede Handika
- Department of Radiation Oncology, Persahabatan General Hospital, Jakarta, Indonesia
| | - Wahyu Edy Wibowo
- Department of Radiation Oncology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Aninda Fitriandini
- Department of Radiation Oncology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Muhamad Fadli
- Department of Radiation Oncology, MRCCC Siloam Hospitals, Jakarta, Indonesia
| | | | | | - Anisza Okselia
- Department of Radiation Oncology, Hasan Sadikin General Hospital, Bandung, Indonesia
| | - Suharsono
- Department of Radiotherapy, Dharmais National Cancer Center Hospital, Jakarta, Indonesia
| | - Supriyanto Ardjo Pawiro
- Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Indonesia.
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Zabihzadeh M, Rahimi A, Shahbazian H, Razmjoo S, Mahdavi SR. Accuracy Evaluation of EPL and ETAR Algorithms in the Treatment Planning Systems using CIRS Thorax Phantom. J Biomed Phys Eng 2021; 11:483-496. [PMID: 34458196 PMCID: PMC8385216 DOI: 10.31661/jbpe.v0i0.1097] [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: 01/01/2019] [Accepted: 04/15/2019] [Indexed: 12/03/2022]
Abstract
Background: It is recommended for each set of radiation data and algorithm that subtle deliberation is done regarding dose calculation accuracy. Knowing the errors in dose calculation
for each treatment plan will result in an accurate estimate of the actual dose achieved by the tumor. Objective: This study aims to evaluate the equivalent path length (EPL) and equivalent tissue air ratio (ETAR) algorithms in radiation dose calculation. Material and Methods: In this experimental study, the TEC-DOC 1583 guideline was used. Measurements and calculations were obtained for each algorithm at specific points in thorax CIRS phantom
for 6 and 18 MVs and results were compared. Results: In the EPL, calculations were in agreement with measurements for 27 points and differences between them ranged from 0.1% to 10.4% at 6 MV. The calculations were
in agreement with measurements for 21 points and differences between them ranged from 0.4% to 13% at 18 MV. In ETAR, calculations were also in consistent with measurements
for 21 points, and differences between them ranged from 0.1% to 9% at 6 MV. Moreover, for 18 MV, the calculations were in agreement with measurements for 17 points
and differences between them ranged from 0% to 11%. Conclusion: For the EPL algorithm, more dose points were in consistent with acceptance criteria. The errors in the ETAR were 1% to 2% less than the EPL. The greatest calculation
error occurs in low-density lung tissue with inhomogeneities or in high-density bone. Errors were larger in shallow depths. The error in higher energy was more than low energy beam.
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Affiliation(s)
- Mansour Zabihzadeh
- PhD, Department of Medical Physics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- PhD, Department of Clinical Oncology, Faculty of Medicine, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Azizollah Rahimi
- PhD, Department of Medical Physics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- PhD, Department of Radiology, Paramedical school, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Hodjatollah Shahbazian
- MD, Department of Clinical Oncology, Faculty of Medicine, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Sasan Razmjoo
- MD, Department of Clinical Oncology, Faculty of Medicine, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Seyyed Rabie Mahdavi
- PhD, Department of Medical Physics, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Wendykier J, Grządziel A, Bekman B, Bieniasiewicz M, Bekman A, Wendykier P, Woźniak B, Reudelsdorf M, Ślosarek K. Using beam profile inflection point in process of treatment planning system verification. Rep Pract Oncol Radiother 2021; 26:553-562. [PMID: 34434571 DOI: 10.5603/rpor.a2021.0049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 02/23/2021] [Indexed: 11/25/2022] Open
Abstract
Background The comparison between profiles during the commissioning of the treatment planning system is an essential procedure. It is impossible to designate a field size for off-axis, wedged, and FFF beams directly by using the definition of the on-axis symmetric field size. This work proposes the use of different characteristic points as indicators of the field size for commissioning and QA purposes. This work aimed to search for the beam profile's characteristic points and use them for the TPS commissioning purposes. Materials and methods The proposal is to use profile inflection points as the beam profile characteristic points. The usage of dedicated software allowed for comparing distances between inflection points and between points of 50% intensity. For the off-axis, wedged, and FFF fields, comparisons were made to the nominal field sizes. Results Distances between inflection points proved to be different by less than 1 mm from nominal field sizes for all kinds of investigated beams. Conclusions Inflection points are convenient for comparing the off-axis, wedged, and FFF field sizes because of their independence from profile normalization. With finite accuracy, the inflection points could be used for the above kind of beam sizes designation.
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Affiliation(s)
- Jacek Wendykier
- Radiotherapy Planning Department, Maria Sklodowska-Curie Institute - Oncology Center Gliwice Branch, Gliwice, Poland
| | - Aleksandra Grządziel
- Radiotherapy Planning Department, Maria Sklodowska-Curie Institute - Oncology Center Gliwice Branch, Gliwice, Poland
| | - Barbara Bekman
- Radiotherapy Planning Department, Maria Sklodowska-Curie Institute - Oncology Center Gliwice Branch, Gliwice, Poland
| | - Marcin Bieniasiewicz
- Radiotherapy Center, Department of Medical Physics, Multidisciplinary Hospital, Gorzów Wielkopolski, Poland
| | - Adam Bekman
- Medical Physics Department, Maria Sklodowska-Curie Institute - Oncology Center Gliwice Branch, Gliwice, Poland
| | - Piotr Wendykier
- Cardinal Stefan Wyszyński University in Warsaw, Warsaw, Poland
| | - Bożena Woźniak
- Medical Physics Department, Maria Sklodowska-Curie Institute - Oncology Center Gliwice Branch, Gliwice, Poland
| | - Marta Reudelsdorf
- Radiotherapy Planning Department, Maria Sklodowska-Curie Institute - Oncology Center Gliwice Branch, Gliwice, Poland
| | - Krzysztof Ślosarek
- Radiotherapy Planning Department, Maria Sklodowska-Curie Institute - Oncology Center Gliwice Branch, Gliwice, Poland
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Falco MD, Fusella M, Clemente S, Fiandra C, Gallio E, Garibaldi C, Bagalà P, Borzì G, Casale M, Casati M, Consorti R, Delana A, Esposito M, Malatesta T, Menghi E, Reggiori G, Russo S, Stasi M, Mancosu P. The influence of basic plan parameters on calculated small field output factors - A multicenter study. Phys Med 2021; 88:98-103. [PMID: 34217003 DOI: 10.1016/j.ejmp.2021.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 06/02/2021] [Accepted: 06/04/2021] [Indexed: 10/21/2022] Open
Abstract
PURPOSE The influence of basic plan parameters such as slice thickness, grid resolution, algorithm type and field size on calculated small field output factors (OFs) was evaluated in a multicentric study. METHODS AND MATERIALS Three computational homogeneous water phantoms with slice thicknesses (ST) 1, 2 and 3 mm were shared among twenty-one centers to calculate OFs for 1x1, 2x2 and 3x3 cm2 field sizes (FSs) (normalized to 10x10 cm2 FS), with their own treatment planning system (TPS) and the energy clinically used for stereotactic body radiation therapy delivery. OFs were calculated for each combination of grid resolution (GR) (1, 2 and 3 mm) and ST and finally compared with the OFs measured for the TPS commissioning. A multivariate analysis was performed to test the effect of basic plan parameters on calculated OFs. RESULTS A total of 509 data points were collected. Calculated OFs are slightly higher than measured ones. The multivariate analysis showed that Center, GR, algorithm type, and FS are predictive variables of the difference between calculated and measured OFs (p < 0.001). As FS decreases, the spread in the difference between calculated and measured OFs became larger when increasing the GR. Monte Carlo and Analytical Anisotropic Algorithms, presented a dependence on GR (p < 0.01), while Collapsed Cone Convolution and Acuros did not. The effect of the ST was found to be negligible. CONCLUSIONS Modern TPSs slightly overestimate the calculated small field OFs compared with measured ones. Grid resolution, algorithm, center number and field size influence the calculation of small field OFs.
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Affiliation(s)
- Maria Daniela Falco
- Department of Radiation Oncology, "G. D'Annunzio" University, "SS. Annunziata" Hospital, Chieti, Italy
| | - Marco Fusella
- Medical Physics Department, Veneto Institute of Oncology IOV-IRCCS, via Gattamelata 64, Padova, Italy
| | - Stefania Clemente
- Unit of Medical Physic and Radioprotection. Azienda Ospedaliera Universitaria Federico II, Naples, Italy
| | - Christian Fiandra
- Department of Oncology - Radiation Oncology, University of Turin, Turin, Italy
| | - Elena Gallio
- Department of Oncology - Radiation Oncology, University of Turin, Turin, Italy
| | - Cristina Garibaldi
- IEO, European Institute of Oncology IRCCS, Unit of Radiation Research, Milan, Italy
| | - Paolo Bagalà
- Universita' Campus Bio-medico di Roma, Via Alvaro del Portillo, 200 Rome, Italy
| | | | - Michelina Casale
- Struttura Semplice di Fisica Sanitaria Azienda Ospedaliera "Santa Maria" Terni, Italy
| | - Marta Casati
- MedicalPhysics Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Rita Consorti
- Medical Physics Unit, S. Filippo Neri Hospital, ASL Roma 1, Rome, Italy
| | - Anna Delana
- Servizio di Fisica Sanitaria Ospedale S. Chiara A.P.S.S. Trento, Italy
| | - Marco Esposito
- Medical Physics Unit, Azienda USL Toscana Centro, Florence, Italy
| | - Tiziana Malatesta
- Fisica Medica, Ospedale Fatebenefratelli S.Giovanni Calibita- Rome, Italy
| | - Enrico Menghi
- Medical Physics Unit, Istituto Romagnolo per lo Studio dei Tumori "Dino Amadori" - IRST S.r.l.Istituto di Ricovero e Cura a Carattere Scientifico, Meldola (FC), Italy
| | - Giacomo Reggiori
- Medical Physics Unit of Radiation Oncology Dept., Humanitas Clinical and Research Hospital, Rozzano-Milan, Italy
| | - Serenella Russo
- Medical Physics Unit, Azienda USL Toscana Centro, Florence, Italy.
| | - Michele Stasi
- Medical Physics Department, A.O. Ordine Mauriziano, Turin, Italy
| | - Pietro Mancosu
- Medical Physics Unit of Radiation Oncology Dept., Humanitas Clinical and Research Hospital, Rozzano-Milan, Italy
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Kazantsev P, Lechner W, Gershkevitsh E, Clark CH, Venencia D, Van Dyk J, Wesolowska P, Hernandez V, Jornet N, Tomsej M, Bokulic T, Izewska J. IAEA methodology for on-site end-to-end IMRT/VMAT audits: an international pilot study. Acta Oncol 2020; 59:141-148. [PMID: 31746249 DOI: 10.1080/0284186x.2019.1685128] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Background: The IAEA has developed and tested an on-site, end-to-end IMRT/VMAT dosimetry audit methodology for head and neck cases using an anthropomorphic phantom. The audit methodology is described, and the results of the international pilot testing are presented.Material and methods: The audit utilizes a specially designed, commercially available anthropomorphic phantom capable of accommodating a small volume ion chamber (IC) in four locations (three in planning target volumes (PTVs) and one in an organ at risk (OAR)) and a Gafchromic film in a coronal plane for the absorbed dose to water and two-dimensional dose distribution measurements, respectively. The audit consists of a pre-visit and on-site phases. The pre-visit phase is carried out remotely and includes a treatment planning task and a set of computational exercises. The on-site phase aims at comparing the treatment planning system (TPS) calculations with measurements in the anthropomorphic phantom following an end-to-end approach. Two main aspects were tested in the pilot study: feasibility of the planning constraints and the accuracy of IC and film results in comparison with TPS calculations. Treatment plan quality was scored from 0 to 100.Results: Forty-two treatment plans were submitted by 14 institutions from 10 countries, with 79% of them having a plan quality score over 90. Seventeen sets of IC measurement results were collected, and the average measured to calculated dose ratio was 0.988 ± 0.016 for PTVs and 1.020 ± 0.029 for OAR. For 13 film measurement results, the average gamma passing rate was 94.1% using criteria of 3%/3 mm, 20% threshold and global gamma.Conclusions: The audit methodology was proved to be feasible and ready to be adopted by national dosimetry audit networks for local implementation.
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Affiliation(s)
| | - Wolfgang Lechner
- Department of Radiation Oncology, Division of Medical Physics, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Vienna, Austria
| | | | - Catharine H. Clark
- Department of Medical Physics, Royal Surrey County Hospital, Guildford, UK
- Metrology for Medical Physics (MEMPHYS), National Physical Laboratory, Teddington, UK
| | | | - Jacob Van Dyk
- Department of Oncology and Medical Biophysics, Western University, London, Canada
| | | | - Victor Hernandez
- Department of Medical Physics, Hospital Sant Joan de Reus, IISPV, Tarragona, Spain
| | - Nuria Jornet
- Servei de Radiofisica i Radioproteccio, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Milan Tomsej
- CHU Charleroi, Hopital Andre Vesale, Montigny-le-Tilleul, Belgium
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Abstract
PURPOSE The IAEA newly developed "end-to-end" audit methodology for on-site verification of IMRT dose delivery has been carried out in Portugal in 2018. The main goal was to evaluate the physical aspects of the head and neck (H&N) cancer IMRT treatments. This paper presents the national results. METHODS All institutions performing IMRT treatments in Portugal, 20 out of 24, have voluntarily participated in this audit. Following the adopted methodology, a Shoulder, Head and Neck End-to-End phantom (SHANE) - that mimics an H&N region, underwent all steps of an IMRT treatment, according to the local practices. The measurements using an ionization chamber placed inside the SHANE phantom at four reference locations (three in PTVs and one in the spinal cord) and an EBT3 film positioned in a coronal plane were compared with calculated doses. FilmQA Pro software was used for film analysis. RESULTS For ionization chamber measurements, the percent difference was within the specified tolerances of ±5% for PTVs and ±7% for the spinal cord in all participating institutions. Considering film analysis, gamma passing rates were on average 96.9%±2.9% for a criterion of 3%/3 mm, 20% threshold, all above the acceptance limit of 90%. CONCLUSIONS The national results of the H&N IMRT audit showed a compliance between the planned and the delivered doses within the specified tolerances, confirming no major reasons for concern. At the same time the audit identified factors that contributed to increased uncertainties in the IMRT dose delivery in some institutions resulting in recommendations for quality improvement.
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A multi-centre analytical study of small field output factor calculations in radiotherapy. PHYSICS & IMAGING IN RADIATION ONCOLOGY 2018; 6:1-4. [PMID: 33458380 PMCID: PMC7807585 DOI: 10.1016/j.phro.2018.03.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 03/05/2018] [Accepted: 03/08/2018] [Indexed: 11/21/2022]
Abstract
An audit methodology was developed and applied for output factor (OF) calculations in radiotherapy. The auditees were asked to calculate OFs for field sizes from 10 × 10 cm2 to 2 × 2 cm2. Sixty five beams were audited; missing reference OFs were interpolated. The calculated OFs were in 73% of cases higher than the reference data. The smaller the field size, the higher the overestimations which were observed in the higher fraction of cases. Treatment planning systems generally overestimated OFs for small fields. The reference dataset helped radiotherapy centres to identify discrepancies which were higher than typical.
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Shahbazi-Gahrouei D, Saeb M, Monadi S, Jabbari I. Clinical Implications of TiGRT Algorithm for External Audit in Radiation Oncology. Adv Biomed Res 2017; 6:117. [PMID: 28989910 PMCID: PMC5627572 DOI: 10.4103/abr.abr_268_16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Performing audits play an important role in quality assurance program in radiation oncology. Among different algorithms, TiGRT is one of the common application software for dose calculation. This study aimed to clinical implications of TiGRT algorithm to measure dose and compared to calculated dose delivered to the patients for a variety of cases, with and without the presence of inhomogeneities and beam modifiers. Materials and Methods: Nonhomogeneous phantom as quality dose verification phantom, Farmer ionization chambers, and PC-electrometer (Sun Nuclear, USA) as a reference class electrometer was employed throughout the audit in linear accelerators 6 and 18 MV energies (Siemens ONCOR Impression Plus, Germany). Seven test cases were performed using semi CIRS phantom. Results: In homogeneous regions and simple plans for both energies, there was a good agreement between measured and treatment planning system calculated dose. Their relative error was found to be between 0.8% and 3% which is acceptable for audit, but in nonhomogeneous organs, such as lung, a few errors were observed. In complex treatment plans, when wedge or shield in the way of energy is used, the error was in the accepted criteria. In complex beam plans, the difference between measured and calculated dose was found to be 2%–3%. All differences were obtained between 0.4% and 1%. Conclusions: A good consistency was observed for the same type of energy in the homogeneous and nonhomogeneous phantom for the three-dimensional conformal field with a wedge, shield, asymmetric using the TiGRT treatment planning software in studied center. The results revealed that the national status of TPS calculations and dose delivery for 3D conformal radiotherapy was globally within acceptable standards with no major causes for concern.
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Affiliation(s)
- Daryoush Shahbazi-Gahrouei
- Department of Medical Physics, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohsen Saeb
- Department of Medical Physics, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shahram Monadi
- Department of Medical Physics, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Iraj Jabbari
- Department of Nuclear Engineering, Faculty of Advanced Sciences and Technologies, Isfahan University, Isfahan, Iran
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Wendykier J, Bieniasiewicz M, Grządziel A, Jedynak T, Kośniewski W, Reudelsdorf M, Wendykier P. Determination of boundaries between ranges of high and low gradient of beam profile. Rep Pract Oncol Radiother 2016; 21:168-73. [PMID: 27601946 DOI: 10.1016/j.rpor.2015.12.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 06/05/2015] [Accepted: 12/23/2015] [Indexed: 11/19/2022] Open
Abstract
AIM This work addresses the problem of treatment planning system commissioning by introducing a new method of determination of boundaries between high and low gradient in beam profile. BACKGROUND The commissioning of a treatment planning system is a very important task in the radiation therapy. One of the main goals of this task is to compare two field profiles: measured and calculated. Applying points of 80% and 120% of nominal field size can lead to the incorrect determination of boundaries, especially for small field sizes. MATERIALS AND METHODS The method that is based on the beam profile gradient allows for proper assignment of boundaries between high and low gradient regions even for small fields. TRS 430 recommendations for commissioning were used. RESULTS The described method allows a separation between high and low gradient, because it directly uses the value of the gradient of a profile. For small fields, the boundaries determined by the new method allow a commissioning of a treatment planning system according to the TRS 430, while the point of 80% of nominal field size is already in the high gradient region. CONCLUSIONS The method of determining the boundaries by using the beam profile gradient can be extremely helpful during the commissioning of the treatment planning system for Intensity Modulated Radiation Therapy or for other techniques which require very small field sizes.
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Affiliation(s)
- Jacek Wendykier
- Radiotherapy and Brachytherapy Planning Department, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Wybrzeże Armii Krajowej 15, 44-101 Gliwice, Poland
| | - Marcin Bieniasiewicz
- Radiotherapy Department, Opole Oncology Center, Katowicka 66a, 45-060 Opole, Poland; Institute of Physics, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Aleksandra Grządziel
- Radiotherapy and Brachytherapy Planning Department, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Wybrzeże Armii Krajowej 15, 44-101 Gliwice, Poland
| | - Tadeusz Jedynak
- Radiotherapy Department, Opole Oncology Center, Katowicka 66a, 45-060 Opole, Poland
| | - Wiktor Kośniewski
- Radiotherapy Department, Opole Oncology Center, Katowicka 66a, 45-060 Opole, Poland
| | - Marta Reudelsdorf
- Institute of Physics, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Piotr Wendykier
- Interdisciplinary Centre for Mathematical and Computational Modelling, University of Warsaw, Pawińskiego 5a, 02-106 Warsaw, Poland
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Lafond C, Chiavassa S, Bertaut C, Boussion N, Chapel N, Chapron L, Coste F, Crespin S, Dy G, Faye PA, Leleu C, Bouvier J, Madec L, Mesgouez J, Palisson J, Vela A, Delpon G. DEMAT: A multi-institutional dosimetry audit of rotational and static intensity-modulated radiotherapy. Phys Med 2016; 32:664-70. [DOI: 10.1016/j.ejmp.2016.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 03/03/2016] [Accepted: 04/18/2016] [Indexed: 10/21/2022] Open
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National dosimetric audit network finds discrepancies in AAA lung inhomogeneity corrections. Phys Med 2015; 31:435-41. [DOI: 10.1016/j.ejmp.2015.04.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Revised: 04/01/2015] [Accepted: 04/02/2015] [Indexed: 11/23/2022] Open
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