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Mejora de la CTR con el ASIC FastIC para TOF-PET superando el ruido de SiPM con corrección de línea de base

Afonso Silvério Xavier De Matos Pinto¹, Nicolaus Kratochwil², Sergio Gómez³

¹I3N Physics Department (I3N) at the University of Aveiro, Portugal.

IEEE transactions on radiation and plasma medical sciences

|February 2, 2026

Resumen

Los avances en los fotomultiplicadores de silicio (SiPM) para la tomografía por emisión de positrones de tiempo de vuelo (TOF-PET) están limitados por el ruido de la señal. Este estudio presenta un método para marcar eventos ruidosos, mejorando significativamente la resolución temporal en los detectores TOF-PET.

Sus antecedentes:

La tomografía por emisión de positrones de tiempo de vuelo (TOF-PET) ha experimentado mejoras significativas en la resolución temporal.
Los fotomultiplicadores de silicio (SiPM) son cruciales para TOF-PET, pero introducen ruido cuando se operan a altos voltajes de polarización.
El ruido de SiPM causa fluctuaciones en la línea de base y distorsión temporal, lo que limita el rendimiento temporal en los sistemas TOF-PET.

Conclusiones:

Se desarrolló con éxito un método escalable para marcar eventos no deseados de SiPM en sistemas TOF-PET.
El método desarrollado mitiga eficazmente el ruido de SiPM, lo que conduce a mejoras significativas en la resolución temporal de coincidencias.
Este trabajo destaca el impacto del ruido de SiPM en aplicaciones de temporización rápida y ofrece una solución práctica para detectores TOF-PET.

Palabras clave:

fotomultiplicador de silicio tomografía por emisión de positrones de tiempo de vuelo resolución temporal de coincidencias corrección de línea de base ruido de SiPM ASIC FastIC

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