Determination of the penumbra width of Elekta SRS cone collimator for 6 MV FF and 6 MV FFF energies using gradient-based edge detection

dc.creatorGROPPO, DANIELA P.
dc.creatorSARAIVA, CRYSTIAN W.C.
dc.creatorCALDAS, LINDA V.E.
dc.date2020
dc.date2020-10-14T15:10:40Z
dc.date2020-10-14T15:10:40Z
dc.date.accessioned2023-09-28T14:16:20Z
dc.date.available2023-09-28T14:16:20Z
dc.identifier0969-806X
dc.identifierhttp://repositorio.ipen.br/handle/123456789/31431
dc.identifier167
dc.identifier10.1016/j.radphyschem.2019.05.009
dc.identifier0000-0002-7362-2455
dc.identifier66.43
dc.identifier72.00
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9001654
dc.descriptionThe dosimetric measurements of small fields of radiation are undertaken with detectors such as: GafchromicTM films, diodes, diamond detectors and ionization chambers of small volumes. The penumbra width, e.g. the spatial distance between 80% and 20% dose, is smaller in small fields. This fact increases the curvature and hence the volume effect in the penumbra region. The accuracy in the penumbra calculation is important at the QA test for implementation of the cranial Stereotactic Radiosurgery. The objective of this work was to apply a Gradient- Based Edge Detection plugin to calculate the penumbra of a radiation beam defined with the Elekta SRS Cone Collimators for beams of 6 MV (Flattening Filter ??? FF) and 6 MV (Flattening Filter Free ??? FFF) energies using the beam profile obtained with GafchromicTM film. The results corroborate those from the literature, and they allow a quantitative evaluation of the width of dosimetric penumbra by Gradient-Based Edge Detection.
dc.descriptionConselho Nacional de Desenvolvimento Cient??fico e Tecnol??gico (CNPq)
dc.descriptionCoordena????o de Aperfei??oamento de Pessoal de N??vel Superior (CAPES)
dc.descriptionCNPq: 301335/2016-8
dc.descriptionCAPES: 554/2018
dc.format1-5
dc.relationRadiation Physics and Chemistry
dc.rightsopenAccess
dc.sourceInternational Symposium on Radiation Physics, 14th, October 7-11, 2018, C??rdoba, Argentina
dc.subjectcones
dc.subjectdosimetry
dc.subjectirradiation
dc.subjectradiotherapy
dc.subjectionization chambers
dc.subjectcollimators
dc.subjectdetection
dc.subjectcalculation methods
dc.titleDetermination of the penumbra width of Elekta SRS cone collimator for 6 MV FF and 6 MV FFF energies using gradient-based edge detection
dc.typeArtigo de peri??dico
dc.coverageI


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