Feb 15 – 19, 2016
Vienna University of Technology
Europe/Vienna timezone

Validation of a highly integrated PET readout system scalable to several 10'000 channels

Not scheduled
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Board: 34
Poster Medical Applications


Stefaan Tavernier (Vrije Universiteit Brussel (BE))


SiPMs allow a dramatically improvement of PET performance because SiPMs are intrinsically faster than PMTs and because SiPMs can easily be subdivided in an large number of small independent photodetector pixels. The good timing performance of SiPMs will result in better effective sensitivity. The small and independent photodetector pixels allow using one-to-one coupling between a SiPM pixls and a LYSO crystals. This will result in significant improvement of the spatial resolution compared to PMT base systems, where some form of crystal encoding must be used to identify the LYSO crystal where the interaction occurred. A whole body PET scanner will typically have 30'000 LYSO crystals measuring 4x4x20mm. To take advantage of SiPMs in PET applications, it is mandatory to have highly integrated electronics readout. We have developed the 64 channel TOFPET1 ASIC for this purpose. It has 64 independent readout cannels without multiplexing. The output is only digital, 80 bits per event. The rest of the electronics only has to transfer the data to the computer. The coincidence sorting is done in firmware. The readout electronics will scale to many tens of thousands of channels. The electronics will be described, and we will present the performance of the readout in a test PET scanner setup with 2'048 channels. We will report on rate performance, energy resolution, spatial resolution and time resolution of the system. Images with phantoms will also be presented

Primary author

Stefaan Tavernier (Vrije Universiteit Brussel (BE))


Agostino Di Francesco (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part) Dr Carlos Leong (PETsys electronics) Joao Varela (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part) Jose Carlos Rasteiro Da Silva (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part) Luis Ferramacho (PETSys Electronics SA) Manuel Dionisio Da Rocha Rolo (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part) Miguel Silveira (LIP Lisbon) Ricardo Bugalho (LIP) Rui Silva (LIP) Tahereh Niknejad (LIP)

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