Search results for "Hadron therapy"

showing 6 items of 6 documents

Breakdown studies for high-gradient RF warm technology in: CLIC and hadron therapy linacs

2016

La presente tesis se centra en el estudio de las limitaciones, debidas principalmente a fenómenos de breakdowns, en el rendimiento de estructuras aceleradoras de radiofrecuencia (RF) de alto gradiente (HG) y de conductividad normal. La formación de arcos en vacío perturban los campos electromagnéticos de las cavidades, lo cual afecta en la calidad del haz de partículas acelerado. El proyecto de Compact Linear Collider (CLIC) estudia la viabilidad de un colisionador lineal electrón-positrón en la escala de energía centro de masa del TeV, y desarrolla las estructuras aceleradoras de última generación para alcanzar altos gradientes de 100 MV/m con una tasa máxima de fenómenos de breakdowns de …

high gradientUNESCO::FÍSICA::Física atómica y nuclear ::Haces de electronesbreakdownaccelerator:FÍSICA::Física atómica y nuclear ::Haces de electrones [UNESCO]rfhadron therapylinacclicnormal conducting
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Improving Image Quality in a multi-plane Compton Telescope for Hadron Therapy Monitoring

2023

Esta disertación explora diferentes técnicas para mejorar la calidad de las imágenes obtenidas con cámaras Compton. Tal mejora es una de las necesidades principales que obstaculizan la aplicación de cámaras Compton como herramientas para la verificación en tiempo real de terapia hadrónica, a través de la obtención de imágenes de distribuciones espaciales de emisión rápida de rayos gamma emitidos como subproductos de las interacciones de estos hadrones en el paciente. Esta aplicación presenta importantes dificultades, pues requiere medir rayos gamma de energías relativamente altas emitidos en un rango de energías amplio y junto a otras partículas no deseadas. Además, la cámara Compton debe s…

compton camerasprompt gammasUNESCO::FÍSICAhadron therapyimage reconstruction
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High performance 3D CZT spectro-imager for BNCT-SPECT: preliminary characterization

2018

The National Institute of Nuclear Physics (INFN) is supporting the 3CaTS project with the aim of developing a new Single Photon Emission Computed Tomography (SPECT) system for real time 10 B therapeutic dose monitoring in the binary experimental hadron therapy called Boron Neutron Capture Therapy (BNCT). BNCT is a highly selective tumour treatment based on the neutron capture reaction 10 B(n,α) 7 Li. The secondary particles have a high LET with ranges in tissues of the order of 10 μm (thus less than the mean cell diameter of few tens μm). Targeting the 10 B delivery towards cancer, the released energy lethally damages only the malignant cells sparing the normal tissues, thus enabling a cell…

Physicsmedicine.diagnostic_test010308 nuclear & particles physicsbusiness.industrySettore FIS/01 - Fisica SperimentaleDetectorResolution (electron density)Single-photon emission computed tomography01 natural sciencesSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)030218 nuclear medicine & medical imagingCharacterization (materials science)Hadron therapyBoron neutron capture therapy03 medical and health sciencesNeutron captureFull width at half maximum0302 clinical medicineOpticsSingle photon emission computed tomography.0103 physical sciencesmedicineNeutron irradiationbusinessX ray detector2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC)
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High-Gradient issues in S-band RF Acceleration Structure for Hadrontherapy accelerators and Radio Frequency Quadrupoles

2020

La investigación de estructuras de microondas de alto gradiente en aceleradores lineales es un tema clave en instalaciones de física de altas energías, y en particular en sistemas de física médica basados en hadronterapia. Esta Tesis Doctoral se centra en el estudio de los problemas que surgen al emplear sistemas de alto gradiente en estructuras aceleradoras de radiofrecuencia no superconductoras. Uno de los efectos que aparecen durante la operación de alta potencia en estos sistemas son los arcos de vacío de RF, llamados breakdown. Esto ocurre debido a los altos campos electromagnéticos de RF que aparecen en las estructuras aceleradoras. Tales eventos tienen un impacto en el rendimiento de…

Hadron therapy:FÍSICA [UNESCO]Linear acceleratorsUNESCO::FÍSICABreakdownsHigh GradientAccelerating structures
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Detector characterization and first coincidence tests of a Compton telescope based on LaBr3 crystals and SiPMs

2011

International audience; A Compton telescope for dose monitoring in hadron therapy consisting of several layers of continuous LaBr3 crystals coupled to silicon photomultiplier (SiPM) arrays is under development within the ENVISION project. In order to test the possibility of employing such detectors for the telescope, a detector head consisting of a continuous 16 mm×18 mm×5 mm LaBr3 crystal coupled to a SiPM array has been assembled and characterized, employing the SPIROC1 ASIC as readout electronics. The best energy resolution obtained at 511 keV is 6.5% FWHM and the timing resolution is 3.1 ns FWHM. A position determination method for continuous crystals is being tested, with promising res…

Nuclear and High Energy PhysicsPhysics::Instrumentation and DetectorsCompton telescopeSiPM01 natural sciences7. Clean energyCoincidence030218 nuclear medicine & medical imaginglaw.inventionTelescope03 medical and health sciencesHadron therapy0302 clinical medicineOpticsSilicon photomultiplierApplication-specific integrated circuitlaw0103 physical sciencesCompton imaging[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det][SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/MicroelectronicsInstrumentationPhysicsContinuous crystal010308 nuclear & particles physicsbusiness.industryResolution (electron density)DetectorMPPCG-APDLaBr3Full width at half maximumbusiness
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Hadron therapy information sharing prototype

2013

The European PARTNER project developed a prototypical system for sharing hadron therapy data. This system allows doctors and patients to record and report treatment-related events during and after hadron therapy. It presents doctors and statisticians with an integrated view of adverse events across institutions, using open-source components for data federation, semantics, and analysis. There is a particular emphasis upon semantic consistency, achieved through intelligent, annotated form designs. The system as presented is ready for use in a clinical setting, and amenable to further customization. The essential contribution of the work reported here lies in the novel data integration and rep…

Health Physics and Radiation EffectsDatabases FactualComputer scienceHealth Toxicology and MutagenesisInformation Disseminationdata federationcancer informaticsweb portalSemanticscomputer.software_genreHealth informaticsPersonalizationAccess to Information03 medical and health sciences0302 clinical medicineSoftwareeHealthProton Therapyproton therapyRadiobiology and ClinicsHumansRadiology Nuclear Medicine and imaging030304 developmental biology0303 health sciencesRadiationManchester Cancer Research Centrebusiness.industryInformation DisseminationInformation sharingResearchInstitutes_Networks_Beacons/mcrcData scienceEurope030220 oncology & carcinogenesisInterdisciplinary CommunicationeHealthhadron therapybusinesscomputerAlgorithmsMedical InformaticsSoftwareData integration
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