Search results for "Electronic Collimation"

showing 2 items of 2 documents

High resolution 80Se(n,γ) cross section measurement at CERN n_TOF and development of the novel i-TED detection system

2022

El proceso (-s) de captura lenta de neutrones es responsable de la formación de la mitad de los elementos más pesados ​​que el hierro en el universo. A pesar de la larga escala de tiempo de este proceso, la larga vida media de algunos isótopos inestables a lo largo del flujo de reacción del proceso-s crea puntos de ramificación que conducen a una división de la ruta de la nucleosíntesis. 79Se (t1/2 = 3.27 x 10^5 y) representa uno de los núcleos ramificados-s más relevantes y debatidos por dos razones principales. Por un lado, la existencia de estados excitados de baja energía en el 79Se, cuya población puede variar con la temperatura del medio estelar, hace que el patrón de abundancia local…

Dynamic Electronic Collimationbranching pointPETsys Electronicsnucleosynthesisi-TEDprompt-gammaUNESCO::FÍSICA::Física atómica y nuclear ::Física nuclear experimental bajas energíasneutron capture cross sectionnuclear physics79Se:FÍSICA::Física atómica y nuclear ::Física nuclear experimental bajas energías [UNESCO]time of flightmonolithic scintillation crystalMACStotal energy detectorsbackground rejectionsilicon photomultipliers-processCompton camera80Se
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Based on Compton Camera

2016

Compton Cameras have been proposed as an alternative to SPECT imaging with Gamma Camera, mainly due to factors such as the electronic collimation, which allows a bigger field of view and provides further information from the acquired events if compared to devices with mechanical collimation. By contrast, this involves a higher amount of data to be processed. In medical devices this leads to waiting times that are generally higher than desirable by the health-care professionals. In this work we have assessed the reconstruction of Compton images by making use of iterative and non-iterative techniques, and also evaluated its performances as a SPECT imaging technique.

Physicsmedicine.diagnostic_testbusiness.industryComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONField of view02 engineering and technologyIterative reconstructionSingle-photon emission computed tomography021001 nanoscience & nanotechnology01 natural scienceslaw.invention010309 opticslawSpect imaging0103 physical sciencesmedicineMedical imagingComputer visionArtificial intelligence0210 nano-technologyElectronic CollimationbusinessImage resolutionGamma camera2016 Global Medical Engineering Physics Exchanges/Pan American Health Care Exchanges (GMEPE/PAHCE)
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