Articles producció científica> Ciències Mèdiques Bàsiques

Universal evaluation of MLC models in treatment planning systems based on a common set of dynamic tests

  • Identification data

    Identifier: imarina:9322154
  • Authors:

    Saez, J
    Bar-Deroma, R
    Bogaert, E
    Cayez, R
    Chow, T
    Clark, CH
    Esposito, M
    Feygelman, V
    Monti, AF
    -Miguel, JG
    Gershkevitsh, E
    Goossens, J
    Herrero, C
    Hussein, M
    Khamphan, C
    Kierkels, RGJ
    Lechner, W
    Lemire, M
    Nevelsky, A
    Nguyen, D
    Paganini, L
    Pasler, M
    Azorín, JFP
    Garcia, LIR
    Russo, S
    Shakeshaft, J
    Vieillevigne, L
    Hernandez, V
    Radiotherapy And Oncology
    10.1016/j.radonc.2023.109775
    Radiotherapy And Oncology. 186 109775-109775
  • Others:

    Author, as appears in the article.: Saez, J; Bar-Deroma, R; Bogaert, E; Cayez, R; Chow, T; Clark, CH; Esposito, M; Feygelman, V; Monti, AF; -Miguel, JG; Gershkevitsh, E; Goossens, J; Herrero, C; Hussein, M; Khamphan, C; Kierkels, RGJ; Lechner, W; Lemire, M; Nevelsky, A; Nguyen, D; Paganini, L; Pasler, M; Azorín, JFP; Garcia, LIR; Russo, S; Shakeshaft, J; Vieillevigne, L; Hernandez, V
    Department: Ciències Mèdiques Bàsiques
    URV's Author/s: Hernandez Masgrau, Victor
    Keywords: Vmat Standardization Radiotherapy, intensity-modulated Radiotherapy planning, computer-assisted Radiotherapy dosage Radiometry Phantoms, imaging Mlc Imrt Humans Dosimetric leaf gap Comissioning Audits vmat standardization radiotherapy radiation-therapy photon parameters monte-carlo imrt dose calculation delivery comissioning audits accuracy
    Abstract: To demonstrate the feasibility of characterising MLCs and MLC models implemented in TPSs using a common set of dynamic beams.A set of tests containing synchronous (SG) and asynchronous sweeping gaps (aSG) was distributed among twenty-five participating centres. Doses were measured with a Farmer-type ion chamber and computed in TPSs, which provided a dosimetric characterisation of the leaf tip, tongue-and-groove, and MLC transmission of each MLC, as well as an assessment of the MLC model in each TPS. Five MLC types and four TPSs were evaluated, covering the most frequent combinations used in radiotherapy departments.Measured differences within each MLC type were minimal, while large differences were found between MLC models implemented in clinical TPSs. This resulted in some concerning discrepancies, especially for the HD120 and Agility MLCs, for which differences between measured and calculated doses for some MLC-TPS combinations exceeded 10%. These large differences were particularly evident for small gap sizes (5 and 10 mm), as well as for larger gaps in the presence of tongue-and-groove effects. A much better agreement was found for the Millennium120 and Halcyon MLCs, differences being within ±5% and ±2.5%, respectively.The feasibility of using a common set of tests to assess MLC models in TPSs was demonstrated. Measurements within MLC types were very similar, but TPS dose calculations showed large variations. Standardisation of the MLC configuration in TPSs is necessary. The proposed procedure can be readily applied in radiotherapy departments and can be a valuable tool in IMRT and credentialing audits.Copyright © 2023. Published by Elsevier B.V.
    Thematic Areas: Saúde coletiva Radiology, nuclear medicine and imaging Radiology, nuclear medicine & medical imaging Oncology Odontología Medicina ii Medicina i Interdisciplinar Hematology General medicine Engenharias iv Engenharias ii Ciências biológicas ii Ciências biológicas i Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: victor.hernandez@urv.cat
    Author identifier: 0000-0003-3770-8486
    Record's date: 2024-07-20
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.thegreenjournal.com/article/S0167-8140(23)00313-4/fulltext#%20
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Radiotherapy And Oncology. 186 109775-109775
    APA: Saez, J; Bar-Deroma, R; Bogaert, E; Cayez, R; Chow, T; Clark, CH; Esposito, M; Feygelman, V; Monti, AF; -Miguel, JG; Gershkevitsh, E; Goossens, J; Her (2023). Universal evaluation of MLC models in treatment planning systems based on a common set of dynamic tests. Radiotherapy And Oncology, 186(), 109775-109775. DOI: 10.1016/j.radonc.2023.109775
    Article's DOI: 10.1016/j.radonc.2023.109775
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications
  • Keywords:

    Hematology,Oncology,Radiology, Nuclear Medicine & Medical Imaging,Radiology, Nuclear Medicine and Imaging
    Vmat
    Standardization
    Radiotherapy, intensity-modulated
    Radiotherapy planning, computer-assisted
    Radiotherapy dosage
    Radiometry
    Phantoms, imaging
    Mlc
    Imrt
    Humans
    Dosimetric leaf gap
    Comissioning
    Audits
    vmat
    standardization
    radiotherapy
    radiation-therapy
    photon
    parameters
    monte-carlo
    imrt
    dose calculation
    delivery
    comissioning
    audits
    accuracy
    Saúde coletiva
    Radiology, nuclear medicine and imaging
    Radiology, nuclear medicine & medical imaging
    Oncology
    Odontología
    Medicina ii
    Medicina i
    Interdisciplinar
    Hematology
    General medicine
    Engenharias iv
    Engenharias ii
    Ciências biológicas ii
    Ciências biológicas i
    Astronomia / física
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