29 July 2018 to 4 August 2018
Russian Academy of Sciences
Europe/Moscow timezone

Efficiency of a Cherenkov based PET module with an array of SiPMs

3 Aug 2018, 14:40
25m
Russian Academy of Sciences

Russian Academy of Sciences

Leninsky Prospekt, 32а Moscow 119071 Russian Federation
oral presentation [20+5 min] Technological aspects and applications of Cherenkov detectors Technological aspects and applications of Cherenkov detectors

Speaker

Rok Dolenec (University of Ljubljana)

Description

The detectors in positron emission tomography (PET) can be based on detection of Cherenkov light instead of the traditional approach of using scintillation light. This enables excellent time resolution that can be used in time-of-flight (TOF) PET, but it proved difficult to achieve efficiency in detection of annihilation gammas comparable to traditional methods. The Cherenkov method however has another advantage - low cost of the most suitable conversion material (lead fluoride) compared to the most commonly used scintillators. Especially when incorporating silicon photomultiplier (SiPM) photodetectors, such PET detectors could be realized at a very competitive price. In this work the performance of such PET module is presented, with an emphasis on the efficiency of detection. Two modules consisting of 4x4 lead fluoride Cherenkov radiator arrays coupled to Hamamatsu 4x4 SiPM arrays were assembled and their performance was tested using annihilation gammas from a sodium source.

Primary authors

Rok Dolenec (University of Ljubljana) Samo Korpar (University of Maribor and JSI) Rok Pestotnik (Jožef Stefan Institute) Peter Krizan (University of Ljubljana, Jozef Stefan Institute)

Presentation Materials

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