info:eu-repo/semantics/article
Heuristic method for photo-detectors localization over continuous crystal scintillation cameras
Fecha
2018-04-25Registro en:
Rodríguez Colmeiro, Ramiro Germán; Verrastro, Claudio Abel; Heuristic method for photo-detectors localization over continuous crystal scintillation cameras; Universidad Nacional de La Plata. Facultad de Informática; Journal of Computer Science and Technology; 18; 1; 25-4-2018; 12-17
1666-6046
1666-6038
CONICET Digital
CONICET
Autor
Rodríguez Colmeiro, Ramiro Germán
Verrastro, Claudio Abel
Resumen
The construction process of large scintillation cameras with continuous crystals is a complex problem affected by multiple variables, from the physical construction of the scintillation crystal to the dispersion in the sensibility of photomultiplier tubes. The selection of these variables have a strong impact on the final performance of the scintillation camera. A new method to select photomultiplier is presented in this paper, regarding its gain, making use of k-means clustering and genetic algorithms. The proposed algorithm was tested and applied in the construction of six scintillation cameras for the Argentinean positron emission tomogaph prototype (AR-PET), a problem with more than 10 +600 possible configurations. The resulting configuration of the scintillation cameras reduced the software-free calibration FWHM of the camera from 20% to 15% average.