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dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributorCristancho Mejía, Luis Fernando
dc.contributor.authorCamelo Guevara, Michael Steve
dc.date.accessioned2019-07-03T10:15:10Z
dc.date.available2019-07-03T10:15:10Z
dc.date.issued2018-11-12
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/69047
dc.description.abstractSe realiza una simulación por métodos Monte Carlo para generar una convergencia de fotones que puedan ser aplicables en un acelerador lineal de uso clínico. Los resultados muestran que la dosis depositada en un maniquí de agua dependen directamente del radio de apertura de los fotones, lo cual a nivel clínico implica una menor dosis absorbida en tejidos sanos y un máximo de dosis absorbida sobre tejido tumoral.
dc.description.abstractAbstract: In this work, a simulation is performed, using Monte Carlo methods to generate a convergence of photons that can be applied in a linear accelerator for clinical use. For this purpose, an electron beam with an energy spectrum, similar to that of energy spectrum of electrons for a real accelerator, is simulated. Therefore , the electron beam can be scattered by magnetic lenses, the opening made on the electron beam in these magnetic lenses will depend on the distribution of doses deposited by the photons in a water phantom. Once the electrons are dispersed they impinge on a second set of magnetic lenses whose function will be to focus the electron beam at a distance of 100 cm from the Tungsten-Copper target, the above with the objective of simulate an isocenter similar to that of a real accelerator. Finally, the beam of electrons, already convergent, hits a Tungsten-Copper target to produce photons from braking radiation. The photons produced tend to continue with the path of the incident electrons in the target, although another number of photons will be scattered in different directions. The results of the simulation show that the dose deposited in a water phantom depends directly on the opening radius of the electrons coming out of the first magnetic lens, where the electron beam opening will give an absorbed dose distribution similar to that of a Lorentzian distribution, which at a clinical level implies a lower dose drop in healthy tissues and a maximum net dose on tumor tissue.
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.relation.ispartofUniversidad Nacional de Colombia Sede Bogotá Facultad de Ciencias Departamento de Física
dc.relation.ispartofDepartamento de Física
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subject.ddc5 Ciencias naturales y matemáticas / Science
dc.subject.ddc53 Física / Physics
dc.titleSimulación de haces de fotones convergentes, una nueva técnica de radioterapia
dc.typeTrabajo de grado - Maestría
dc.type.driverinfo:eu-repo/semantics/masterThesis
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.identifier.eprintshttp://bdigital.unal.edu.co/70465/
dc.description.degreelevelMaestría
dc.relation.referencesCamelo Guevara, Michael Steve (2018) Simulación de haces de fotones convergentes, una nueva técnica de radioterapia. Maestría thesis, Universidad Nacional de Colombia - Sede Bogotá.
dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.subject.proposalRadioterapia
dc.subject.proposalGeant4
dc.subject.proposalMonte Carlo
dc.subject.proposalConvergencia
dc.subject.proposalRadiocirugía
dc.subject.proposalDispersión electrones
dc.subject.proposalRadiotherapy
dc.subject.proposalConvergence
dc.subject.proposalRadiosurgery
dc.subject.proposalElectron Beam
dc.subject.proposalElectron Scattering
dc.type.coarhttp://purl.org/coar/resource_type/c_bdcc
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.contentText
dc.type.redcolhttp://purl.org/redcol/resource_type/TM
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2


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Atribución-NoComercial 4.0 InternacionalThis work is licensed under a Creative Commons Reconocimiento-NoComercial 4.0.This document has been deposited by the author (s) under the following certificate of deposit