Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Development of a simplified simulation model for performance characterization of a pixellated CdZnTe multimodality imaging system
Año:2008
Áreas de investigación
  • Industria electrónica
Datos
Descripción
Current requirements of molecular imaging lead to the complete integration of complementary modalities in a single hybrid imaging system to correlate function and structure. Among the various existing detector technologies, which can be implemented to integrate nuclear modalities (PET and/or single photon emission computed tomography with x-rays (CT) and most probably with MR, pixellated wide bandgap room temperature semiconductor detectors, such as CdZnTe and/or CdTe, are promising candidates. This paper deals with the development of a simplified simulation model for pixellated semiconductor radiation detectors, as a first step towards the performance characterization of a multimodality imaging system based on CdZnTe. In particular, this work presents a simple computational model, based on a 1D approximate solution of the Schockley¿Ramo theorem, and its integration into the Geant4 application for tomographic emission (GATE) platform in order to perform accurately and, therefore, improve the simulations of pixellated detectors in different configurations with a simultaneous cathode and anode pixel readout. The model presented here is successfully validated against an existing detailed finite element simulator, the multi-geometry simulation code, with respect to the charge induced at the anode, taking into consideration interpixel charge sharing and crosstalk, and to the detector charge induction efficiency. As a final point, the model provides estimated energy spectra and time resolution for 57Co and 18F sources obtained with the GATE code after the incorporation of the proposed model.
Internacional
Si
JCR del ISI
Si
Título de la revista
PHYSICS IN MEDICINE AND BIOLOGY
ISSN
0031-9155
Factor de impacto JCR
2,528
Información de impacto
Volumen
53
DOI
10.1088/0031-9155/53/4/019
Número de revista
4
Desde la página
1099
Hasta la página
1113
Mes
FEBRERO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Participante: Dimitra Darambara (Institute of Cancer Research, London, UK)
  • Autor: Andres de Santos Lleo (UPM)
  • Autor: Pedro Guerra Gutierrez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Tecnología de imágenes biomédicas
  • Centro o Instituto I+D+i: Centro de tecnología Biomédica CTB
  • Departamento: Ingeniería Electrónica
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