Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/30862

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dc.contributor.authorRocha, Humbertopor
dc.contributor.authorRocha, Ana Maria A. C.por
dc.contributor.authorDias, Joana M.por
dc.contributor.authorFerreira, Brígida C.por
dc.contributor.authorLopes, Maria do Carmopor
dc.date.accessioned2014-11-12T11:26:21Z-
dc.date.available2014-11-12T11:26:21Z-
dc.date.issued2014-
dc.identifier.isbn978-3-319-09128-0-
dc.identifier.issn0302-9743-
dc.identifier.urihttp://hdl.handle.net/1822/30862-
dc.description.abstractThe selection of appropriate beam irradiation directions in radiotherapy – beam angle optimization (BAO) problem – is very impor- tant for the quality of the treatment, both for improving tumor irradia- tion and for better organs sparing. However, the BAO problem is still not solved satisfactorily and, most of the time, beam directions continue to be manually selected in clinical practice which requires many trial and error iterations between selecting beam angles and computing fluence patterns until a suitable treatment is achieved. The objective of this pa- per is to introduce a new approach for the resolution of the BAO problem, using an hybrid electromagnetism-like algorithm with descent search to tackle this highly non-convex optimization problem. Electromagnetism- like algorithms are derivative-free optimization methods with the ability to avoid local entrapment. Moreover, the hybrid electromagnetism-like algorithm with descent search has a high ability of producing descent directions. A set of retrospective treated cases of head-and-neck tumors at the Portuguese Institute of Oncology of Coimbra is used to discuss the benefits of the proposed algorithm for the optimization of the BAO problem.por
dc.description.sponsorshipFundação para a Ciência e a Tecnologia (FCT)por
dc.language.isoengpor
dc.publisherSpringer Verlagpor
dc.rightsopenAccesspor
dc.subjectElectromagnetism-like mechanismpor
dc.subjectDescent Searchpor
dc.subjectIMRTpor
dc.subjectBeam Angle Optimizationpor
dc.titleIMRT beam angle optimization using electromagnetism-like algorithmpor
dc.typeconferencePaperpor
dc.peerreviewedyespor
dc.relation.publisherversionwww.springerlink.compor
sdum.publicationstatuspublishedpor
oaire.citationStartPage278por
oaire.citationEndPage289por
oaire.citationIssueParte 2por
oaire.citationTitleLecture Notes in Computer Sciencepor
oaire.citationVolume8580por
dc.identifier.doi10.1007/978-3-319-09129-7_21por
dc.subject.fosCiências Naturais::Ciências da Computação e da Informaçãopor
dc.subject.wosScience & Technologypor
sdum.journalLecture Notes in Computer Sciencepor
sdum.conferencePublicationCOMPUTATIONAL SCIENCE AND ITS APPLICATIONS - ICCSA 2014, PT IIpor
Appears in Collections:CAlg - Livros e capítulos de livros/Books and book chapters

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