Exploració per tema "Radioteràpia"
Ara es mostren els items 1-20 de 21
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A general analytical solution to the geometrical problem of field matching in radiotherapy
(2009)
Article
Accés restringit per política de l'editorialPurpose: Several authors studied the problem of geometrical matching of fields produced by medical linear accelerators. However, a general solution has yet to be published. Currently available solutions are based on ... -
A method for accurate zero calibration of asymmetric jaws in single-isocenter half-beam techniques
(2013-02)
Article
Accés restringit per política de l'editorialPurpose: To present a practical method for calibrating the zero position of asymmetric jaws that provides higher accuracy at the central axis and improves dose homogeneity in the abutting region of half-beams. Methods: ... -
Cuantificación de la dosis en superficie en radioterapia: Simulación Monte Carlo y medidas con cámara de extrapolación
(Universitat Politècnica de Catalunya, 2013-05)
Projecte Final de Màster Oficial
Accés obertDuring a radiotherapy treatment, skin of the patient is always exposed to the radiation; as a consequence late effects can be appear. Therefore, dose values in this region may be of interest for clinical evaluation and ... -
Determinación de dosis periféricas en tratamientos de radioterapia externa
(Universitat Politècnica de Catalunya, 2010-07)
Projecte Final de Màster Oficial
Accés obertHoy en día el cáncer es una de las principales causas de muerte en nuestra sociedad. Como consecuencia durante los últimos años se han desarrollado nuevas técnicas y modalidades de radioterapia para hacer frente a esta ... -
Dose variations in tumor volumes and organs at risk during IMRT for head-and-neck cancer
(2012)
Article
Accés obertMany head-and-neck cancer (HNC) patients treated with radiotherapy suffer significant anatomical changes due to tumor shrinkage or weight loss. The purpose of this study was to assess dose changes over target volumes and ... -
Estimación de la dosis absorbida mediante dosimetría termoluminiscente en exploraciones de RX de localización para tratamientos de radioterapia
(Universitat Politècnica de Catalunya, 2010-07)
Projecte Final de Màster Oficial
Accés obertEl objetivo del proyecto consiste en estimar la dosis absorbida en una exploración de RX de localización utilizada en radioterapia guiada por la imagen. Para estimar la dosis se ha utilizado un sistema de dosimetría basado ... -
Experimental verification of acuros XB in the presence of lung-equivalent heterogeneities
(2017-11)
Article
Accés obertAcuros XB (AXB) is a deterministic algorithm that directly accounts for the effects of heterogeneities and improves the accuracy of photon dose calculations in radiotherapy. Nevertheless, the accuracy of AXB inside lung ... -
Failure mode and effect analysis oriented to risk-reduction interventions in intraoperative electron radiation therapy: The specific impact of patient transportation, automation, and treatment planning availability
(2014-11-24)
Article
Accés restringit per política de l'editorialBackground and purpose: Industrial companies use failure mode and effect analysis (FMEA) to improve quality. Our objective was to describe an FMEA and subsequent interventions for an automated intraoperative electron ... -
Mejora del diseño del dosímetro de neutrones extendido LINremext2
(Universitat Politècnica de Catalunya, 2022-05-03)
Treball Final de Grau
Accés restringit per decisió de l'autorEl LINremext2 es un dosímetro de rango extendido creado por el Grupo de Física Nuclear Experimental de la UPC optimizado para protonterapia. El trabajo describe el proceso de mejora en la respuesta del prototipo, el reemplazo ... -
Monte Carlo and experimental small-field dosimetry applied to spatially fractionated synchrotron radiotherapy techniques
(Universitat Politècnica de Catalunya, 2012-03-12)
Tesi
Accés obertTwo innovative radiotherapy (RT) approaches are under development at the ID17 Biomedical Beamline of the European Synchrotron Radiation Facility (ESRF): microbeam radiation therapy (MRT) and minibeam radiation therapy ... -
Monte Carlo simulation of the Varian TrueBeam flattened-filtered beams using a surrogate geometry in PRIMO
(Springer, 2024-01-25)
Article
Accés obertBackground. Monte Carlo simulation of radiation transport for medical linear accelerators (linacs) requires accurate knowledge of the geometrical description of the linac head. Since the geometry of Varian TrueBeam ... -
Monte Carlo-based dose calculation engine for minibeam radiation therapy
(2014-02)
Article
Accés restringit per política de l'editorialMinibeam radiation therapy (MBRT) is an innovative radiotherapy approach based on the wellestablished tissue sparing effect of arrays of quasi-parallel micrometre-sized beams. In order to guide the preclinical trials in ... -
On the beam hardening correction of the transit-guided radiation therapy attenuation model
(2023-08-09)
Article
Accés restringit per política de l'editorialPurpose The Transit-Guided Radiation Therapy (TGRT) technique is a novel technique aimed to quantify the position error of a patient by using the transit portal images (TPI) of the treatment fields. Despite of the promising ... -
PENELOPE/PRIMO-calculated photon and electron spectra from clinical accelerators
(Springer (Biomed Central Ltd.), 2019-01-11)
Article
Accés obertBackground: The availability of photon and electron spectra in digital form from current accelerators and Monte Carlo (MC) systems is scarce, and one of the packages widely used refers to linacs with a reduced clinical use ... -
Proyecto de blindaje de un acelerador de electrones con finalidad de radioterapia
(Universitat Politècnica de Catalunya, 2010-06)
Projecte/Treball Final de Carrera
Accés obertEl presente proyecto pretende dar cobertura a la reciente revisión de las normativas vigentes (DIN 6847-2, septiembre de 2008 y NCRP Report nº 151, diciembre de 2005) sobre el blindaje de instalaciones de radioterapia ... -
Puesta a punto de un sistema para la determinación de la dosis en piel durante tratamientos de radioterapia
(Universitat Politècnica de Catalunya, 2012-09)
Projecte Final de Màster Oficial
Accés obertEn la sociedad actual de los países desarrollados existe un notable incremento en el uso de la radioterapia para el tratamiento de tumores, ya sea con un objetivo paliativo o curativo; la maquinaria empleada es cada día ... -
Race-track microtron with pulse-to-pulse beam energy switch
(2017)
Comunicació de congrés
Accés obertA race-track microtron with a few beam orbits can be an alternative to a standard electron linear accelerator in a number of applications in which high beam power is not needed, like radiation therapy, industrial radiography ... -
RECORDS: Improved reporting of Monte Carlo radiation transport studies: Report of the AAPM Research Committee Task Group 268
(2018-01-01)
Article
Accés obert© 2017 American Association of Physicists in Medicine. Studies involving Monte Carlo simulations are common in both diagnostic and therapy medical physics research, as well as other fields of basic and applied science. As ... -
Sistema robot per la radioteràpia intraoperatòria.
(Universitat Politècnica de Catalunya, 2014-02-06)
Treball Final de Grau
Accés obert[CATALÀ] L'objectiu del projecte és dissenyar i implementar una solució per al tractament del càncer mitjançant la radioteràpia intraoperatòria (RIO) basada en un robot comercial. El sistema proposat interacciona amb un ... -
Validación del código PRIMO de simulación para radioterapia externa
(Universitat Politècnica de Catalunya, 2014-09)
Projecte Final de Màster Oficial
Accés obertCancer is one of the leading causes of death around the world and the number of patients is expected to increase in the next years. Most of the cancer patients are treated with radiotherapy for at least a part of their ...