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Sá AC, Barateiro A, Bednarz BP, Almeida P, Vaz P, Madaleno T. Corrigendum: Comparison of 3DCRT and IMRT out-of-field doses in pediatric patients using Monte Carlo simulations with treatment planning system calculations and measurements. Front Oncol 2023; 13:1293922. [PMID: 37876973 PMCID: PMC10593431 DOI: 10.3389/fonc.2023.1293922] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 09/28/2023] [Indexed: 10/26/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fonc.2022.879167.].
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Affiliation(s)
- Ana Cravo Sá
- Radiation Protection and Safety Group, Centro de Ciências e Tecnologias Nucleares (C2TN), Bobadela, Portugal
- Diagnostic, Therapeutic and Public Health Sciences Department, Escola Superior de Tecnologia da Saúde de Lisboa (ESTeSL), Lisbon, Portugal
- Instituto de Biofísica e Engenharia Biomédica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Andreia Barateiro
- Radiotherapy Department, Portuguese Institute of Oncology Francisco Gentil, Lisbon, Portugal
| | - Bryan P. Bednarz
- Department of Medical Physics, Wisconsin Institutes for Medical Research, University of Wisconsin Hospital and Clinics, Madison, WI, United States
| | - Pedro Almeida
- Instituto de Biofísica e Engenharia Biomédica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Pedro Vaz
- Radiation Protection and Safety Group, Centro de Ciências e Tecnologias Nucleares (C2TN), Bobadela, Portugal
| | - Tiago Madaleno
- Radiotherapy Department, Portuguese Institute of Oncology Francisco Gentil, Lisbon, Portugal
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Sá AC, Barateiro A, Bednarz BP, Almeida P, Vaz P, Madaleno T. Comparison of 3DCRT and IMRT out-of-field doses in pediatric patients using Monte Carlo simulations with treatment planning system calculations and measurements. Front Oncol 2022; 12:879167. [PMID: 35992845 PMCID: PMC9388939 DOI: 10.3389/fonc.2022.879167] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
3DCRT and IMRT out-of-field doses in pediatric patients were compared using Monte Carlo simulations with treatment planning system calculations and measurements. Purpose Out-of-field doses are given to healthy tissues, which may allow the development of second tumors. The use of IMRT in pediatric patients has been discussed, as it leads to a "bath" of low doses to large volumes of out-of-field organs and tissues. This study aims to compare out-of-field doses in pediatric patients comparing IMRT and 3DCRT techniques using measurements, Monte Carlo (MC) simulations, and treatment planning system (TPS) calculations. Materials and methods A total dose of 54 Gy was prescribed to a PTV in the brain of a pediatric anthropomorphic phantom, for both techniques. To assess the out-of-field organ doses for both techniques, two treatment plans were performed with the 3DCRT and IMRT techniques in TPS. Measurements were carried out in a LINAC using a pediatric anthropomorphic phantom and thermoluminescent dosimeters to recreate the treatment plans, previously performed in the TPS. A computational model of a LINAC, the associated multileaf collimators, and a voxelized pediatric phantom implemented in the Monte Carlo N-Particle 6.1 computer program were also used to perform MC simulations of the out-of-field organ doses, for both techniques. Results The results obtained by measurements and MC simulations indicate a significant increase in dose using the IMRT technique when compared to the 3DCRT technique. More specifically, measurements show higher doses with IMRT, namely, in right eye (13,041 vs. 593 mGy), left eye (6,525 vs. 475 mGy), thyroid (79 vs. 70 mGy), right lung (37 vs. 28 mGy), left lung (27 vs. 20 mGy), and heart (31 vs. 25 mGy). The obtained results indicate that out-of-field doses can be seriously underestimated by TPS. Discussion This study presents, for the first time, out-of-field dose measurements in a realistic scenario and calculations for IMRT, centered on a voxelized pediatric phantom and an MC model of a medical LINAC, including MLC with log file-based simulations. The results pinpoint significant discrepancies in out-of-field doses for the two techniques and are a cause of concern because TPS calculations cannot accurately predict such doses. The obtained doses may presumably increase the risk of development of second tumors.
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Affiliation(s)
- Ana Cravo Sá
- Radiation Protection and Safety Group, Centro de Ciências e Tecnologias Nucleares (C2TN), Bobadela, Portugal
- Diagnostic, Therapeutic and Public Health Sciences Department, Escola Superior de Tecnologia da Saúde de Lisboa (ESTeSL), Lisbon, Portugal
- Instituto de Biofísica e Engenharia Biomédica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Andreia Barateiro
- Radiotherapy Department, Portuguese Institute of Oncology Francisco Gentil, Lisbon, Portugal
| | - Bryan P. Bednarz
- Department of Medical Physics, Wisconsin Institutes for Medical Research, University of Wisconsin Hospital and Clinics, Madison, WI, United States
| | - Pedro Almeida
- Instituto de Biofísica e Engenharia Biomédica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Pedro Vaz
- Radiation Protection and Safety Group, Centro de Ciências e Tecnologias Nucleares (C2TN), Bobadela, Portugal
| | - Tiago Madaleno
- Radiotherapy Department, Portuguese Institute of Oncology Francisco Gentil, Lisbon, Portugal
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Cravo Sá A, Fermento A, Neves D, Ferreira S, Silva T, Marques Coelho C, Vaandering A, Roma A, Quaresma S, Bonnarens E. Radiotherapy setup displacements in breast cancer patients: 3D surface imaging experience. Rep Pract Oncol Radiother 2018; 23:61-67. [PMID: 29379398 PMCID: PMC5773710 DOI: 10.1016/j.rpor.2017.12.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [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: 02/09/2017] [Accepted: 12/27/2017] [Indexed: 01/15/2023] Open
Abstract
AIM In this study, we intend to compare two different setup procedures for female breast cancer patients. BACKGROUND Imaging in radiotherapy provides a precise localization of the tumour, increasing the accuracy of the treatment delivery in breast cancer. MATERIALS AND METHODS Twenty breast cancer patients who underwent whole breast radiotherapy (WBRT) were selected for this study. Patients were divided into two groups of ten. Group one (G1) was positioned by tattoos and then the patient positioning was adjusted with the aid of AlignRT (Vision RT, London, UK). In group two (G2), patients were positioned only by tattoos. For both groups, the first 15 fractions were analyzed, a daily kilovoltage (kV) cone beam computed tomography (CBCT) image was made and then the rotational and translational displacements and, posteriorly, the systematic (Σ) and random (σ) errors were analyzed. RESULTS The comparison of CBCT displacements for the two groups showed a statistically significant difference in the translational left-right (LR) direction (ρ = 0.03), considering that the procedure with AlignRT system has smaller lateral displacements. The results of systematic (Σ) and random (σ) errors showed that for translational displacements the group positioned only by tattoos (G2) demonstrated higher values of errors when compared with the group positioned with the aid of AlignRT (G1). CONCLUSIONS AlignRT could help the positioning of breast cancer patients; however, it should be used with another imaging method.
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Affiliation(s)
- Ana Cravo Sá
- Área Científica de Radioterapia, Escola Superior de Tecnologia da Saúde de Lisboa – Instituto Politécnico de Lisboa, Avenida D. João II, lote 4.69.01, 1990-096 Lisboa, Portugal
| | - Ana Fermento
- Área Científica de Radioterapia, Escola Superior de Tecnologia da Saúde de Lisboa – Instituto Politécnico de Lisboa, Avenida D. João II, lote 4.69.01, 1990-096 Lisboa, Portugal
| | - Dalila Neves
- Área Científica de Radioterapia, Escola Superior de Tecnologia da Saúde de Lisboa – Instituto Politécnico de Lisboa, Avenida D. João II, lote 4.69.01, 1990-096 Lisboa, Portugal
| | - Sara Ferreira
- Área Científica de Radioterapia, Escola Superior de Tecnologia da Saúde de Lisboa – Instituto Politécnico de Lisboa, Avenida D. João II, lote 4.69.01, 1990-096 Lisboa, Portugal
| | - Teresa Silva
- Área Científica de Radioterapia, Escola Superior de Tecnologia da Saúde de Lisboa – Instituto Politécnico de Lisboa, Avenida D. João II, lote 4.69.01, 1990-096 Lisboa, Portugal
| | - Carina Marques Coelho
- Área Científica de Radioterapia, Escola Superior de Tecnologia da Saúde de Lisboa – Instituto Politécnico de Lisboa, Avenida D. João II, lote 4.69.01, 1990-096 Lisboa, Portugal
| | - Aude Vaandering
- Service de Radiothérapie Oncologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate, 10, 1200 Bruxelles, Belgium
| | - Ana Roma
- Service de Radiothérapie Oncologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate, 10, 1200 Bruxelles, Belgium
| | - Sérgio Quaresma
- Service de Radiothérapie Oncologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate, 10, 1200 Bruxelles, Belgium
| | - Emmanuel Bonnarens
- Service de Radiothérapie Oncologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate, 10, 1200 Bruxelles, Belgium
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Coelho CM, Calçada R, Rodrigues S, Barragán JA, Sá AC, Macedo AP, de Fátima Monsanto M. Evaluation of administered dose using portal images in craniospinal irradiation of pediatric patients. Radiol Phys Technol 2017; 10:274-278. [PMID: 28324390 DOI: 10.1007/s12194-017-0395-4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 03/08/2017] [Accepted: 03/09/2017] [Indexed: 11/29/2022]
Abstract
This study aimed to assess the administered dose based on portal imaging in craniospinal pediatric irradiation by evaluating cases in which portal images did or did not account for the total administered dose. We also intended to calculate the mean increase in total administered dose. Data were collected from General University Hospital Gregorio Marañón; we evaluated the total dose administered, total dose planned, number of portal images per treatment and corresponding monitor units of two different groups: one in which the dose from portal images is deducted from the total administered dose (D), and another in which it was not (N). We used descriptive statistics to analyze the collected data, including the mean and respective standard deviation. We used the Shapiro-Wilk and Spearman rank correlation coefficient tests and estimated the linear regression coefficients. Patients in group D received a mean dose of 29.00 ± 10.28 cGy based on the verification portal images, a quantity that was deducted from the planned dose to match the total administered dose. Patients in group N received a mean dose of 41.50 ± 30.53 cGy, which was not deducted from the planned dose, evidencing a mean increase of 41.50 ± 30.55 cGy over the total administered dose. The acquisition of the set-up verification portal images, without their inclusion in the total administered dose, reflects an average increase in total dose for craniospinal irradiation of pediatric patients. Subtraction of the monitor units used to acquire the verification images is recommended.
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Affiliation(s)
- Carina Marques Coelho
- Radiotherapy Department, Lisbon School of Health Technology, Polytechnic Institute of Lisbon, Avenida D. João II, lote 4.69.01, 1990-096, Lisbon, Portugal.
| | - Raquel Calçada
- Radiotherapy Department, Lisbon School of Health Technology, Polytechnic Institute of Lisbon, Avenida D. João II, lote 4.69.01, 1990-096, Lisbon, Portugal
| | - Sofia Rodrigues
- Radiotherapy Department, Lisbon School of Health Technology, Polytechnic Institute of Lisbon, Avenida D. João II, lote 4.69.01, 1990-096, Lisbon, Portugal
| | - Juan Antonio Barragán
- Radiation Oncology Department, General University Hospital Gregorio Marañón, Doctor Esquerdo, 46, 20030, Madrid, Spain
| | - Ana Cravo Sá
- Radiotherapy Department, Lisbon School of Health Technology, Polytechnic Institute of Lisbon, Avenida D. João II, lote 4.69.01, 1990-096, Lisbon, Portugal
| | - Ana Paula Macedo
- Mathematic Department, Lisbon School of Health Technology, Polytechnic Institute of Lisbon, Avenida D. João II, lote 4.69.01, 1990-096, Lisbon, Portugal
| | - Maria de Fátima Monsanto
- Radiotherapy Department, Lisbon School of Health Technology, Polytechnic Institute of Lisbon, Avenida D. João II, lote 4.69.01, 1990-096, Lisbon, Portugal
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Sá AC, Peres A, Pereira M, Coelho CM, Monsanto F, Macedo A, Lamas A. Evaluating deviations in prostatectomy patients treated with IMRT. Rep Pract Oncol Radiother 2016; 21:266-70. [DOI: 10.1016/j.rpor.2015.11.004] [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] [Received: 08/05/2015] [Accepted: 11/30/2015] [Indexed: 10/22/2022] Open
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