I Jornadas RSEF / IFIMED de Física Médica

Testing MPPCs for PET at UB

No programado

Parque Científico. Salon de Actos Edificio de Cabecera (IFIC-Valencia)

Descripción

Medical imaging devices have historically been based on scintillator crystals coupled to photomultipliers tubes, PMTs. The problems to combine PMTs with high electromagnetic fields and the relatively high cost per unit surface, opens new opportunities on the field for a different type of photodetector named silicon photomultiplier. SiPM or Multipixel Photon Counter, MPPCs, offer an alternative combining the high gain of the photomultipliers tubes, and the insensitiveness to the magnetic field, high quantum efficiency and compact structure of the avalanche photodiodes. This allows an increasing quality of medical imaging technics, such as positron emission tomography, allowing a better and early detection of different diseases. In this study very promising results for coincidence time resolution and single photon time resolution coming from the silicon photomultiplier combined with a readout electronics developed at UB are presented, where we are trying to reach the limits of the technology.