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We present two novel contributions for multiplexing PET detectors. First, we develop a new theoretical framework for investigating multiplexing schemes for PET detectors using the theory of "compressed sensing" (CS). Second, we develop a new CS decoder that improves the multiplexing SNR. Because the photon events in PET are discrete, the detected photon signals are very sparse. CS theory...
A positron emission tomography system for small animals has been designed for research purposes, and developed at Instituto de Fi??sica, UNAM, Mexico. Its detection modules are based on pixelated scintillator LYSO crystal arrays coupled to Hamamatsu H8500 position-sensitive photomultiplier tubes. The front-end electronics are based on nuclear instrumentation modules (NIM) and in-house built readout...
The relatively new inorganic scintillator LaBr3:Ce is well suited for time-of-flight positron emission tomography (TOF-PET), since it has short scintillation decay time, high light yield and very good energy resolution. Silicon photomultipliers (SiPMs) show low noise, high gain and small transit-time jitter, and are thus well suited for fast timing applications. The work presented here focuses on...
Higher count rate detectors are needed for high sensitivity positron emission tomography (PET) scanners. However, the maximum count rate of the detectors is limited due to the large pileup quantity in the high count rate situation, in which pileups are rejected conventionally. In this paper, we investigate the development of a method for digitally sampling scintillation pulses for PET. We focus on...
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