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van der Sar, S.J. (author), Brunner, Stefan (author), Schaart, D.R. (author)We investigate X-ray photon-counting scintillation detectors with silicon photomultiplier (SiPM) readout. These circumvent some drawbacks of direct-conversion detectors. We measured observed count rate (OCR) versus X-ray tube current for single-pixel detectors consisting of LYSO:Ce and YAP:Ce scintillators coupled to ultrafast SiPMs. For a 30...journal article 2022
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van der Sar, S.J. (author), Leibold, D. (author), Brunner, Stefan E. (author), Schaart, D.R. (author)We investigate fast silicon photomultiplier (SiPM)-based scintillation detectors for X-ray photon-counting applications, e.g., photon-counting computed tomography (CT). Such detectors may be an alternative to CdTe/CdZnTe (CZT) and Si detectors, which face challenges related to availability and cost-effective growth of detector-grade material,...conference paper 2022
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van der Sar, S.J. (author), Brunner, Stefan E. (author), Schaart, D.R. (author)Purpose: The implementation of photon-counting detectors is widely expected to be the next breakthrough in X-ray computed tomography (CT) instrumentation. A small number of prototype scanners equipped with direct-conversion detectors based on room-temperature semiconductors, such as CdTe and CdZnTe (CZT), are currently installed at medical...journal article 2021
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Venialgo Araujo, E. (author), Lusardi, Nicola (author), Garzetti, Fabio (author), Geraci, Angelo (author), Brunner, S. (author), Schaart, D.R. (author), Charbon-Iwasaki-Charbon, E. (author)Typically, a time-of-flight (TOF) PET block detector is built using application-specific integrated circuits (ASICs), since they integrate a high number of channels at a reasonable power consumption and into a small area. However, ASICs’ flexibility is limited and prototyping times are long because a semiconductor fabrication process is required...journal article 2018
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Brunner, S. (author), Schaart, D.R. (author)Due to detector developments in the last decade, the time-of-flight (TOF) method is now commonly used to improve the quality of positron emission tomography (PET) images. Clinical TOF-PET systems based on L(Y)SO:Ce crystals and silicon photomultipliers (SiPMs) with coincidence resolving times (CRT) between 325 ps and 400 ps FWHM have recently...journal article 2017