Assesment of array scintillation detector for follicle thyrioid 2D-image acquisition using Monte Carlo Simulation

• Autor(a) principal: Silva, Carlos Borges da
• Data de Publicação: 2007
• Outros Autores: Braz, Delson, Carvalho, Denise Pires de, Santanna, Claudio Reis de, Instituto de Engenharia Nuclear, Universidade Federal do Rio de Janeiro
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional do IEN
• Texto Completo: http://carpedien.ien.gov.br:8080/handle/ien/2544
• topic: INAC 2007; Monte Carlo Simulation; 2D-image; Gamma radiation

This work presents an innovative study to find out the adequate scintillation inorganic detector array to be used coupled to a specific light photo sensor, a charge coupled device (CCD), through a fiber optic plate. The goal is to choose the type of detector that fits a 2-dimensional imaging acquisition of a cell thyroid tissue application with high resolution and detection efficiency in order to map a follicle image using gamma radiation emission. A point or volumetric source –detector simulation by using a MCNP4B general code, considering different source energies, detector materials and geometry including pixel sizes and reflector types was performed. In this study, simulations were performed for 7x7 and 127x127 arrays using CsI (TU) and BGO scintillation crystals with pixel size ranging from 1x1 cm2 to 10 x 10 µm2 and radiation thickness ranging from 1 mm to 10 mm. the effect of all these parameters was investigated to find the best source-detector system that result in an image with the best contrast details. The results, showed that it is possible to design a specific imaging system that allows searching for in-vitro studies, specifically in radiobiology applied to endocrine physiology.