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Silicon photomultiplier‐based scintillation detectors for photon‐counting CT: A feasibility study by Stefan J. van der Sar; Stefan E. Brunner; Dennis R. Schaart is a Medicine article available to read on EtoBox.

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## 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 centers. Here, we investigate the feasibility of using silicon photomultiplier (SiPM)‐based scintillation detectors in photon‐counting computed tomography (PCCT) scanners, as a potential alternative to CdTe and CZT detectors. ## Methods We introduce a model that allows us to compute the expected energy resolution as well as the expected pulse shape and associated rate capability of SiPM‐based PCCT detectors. The model takes into account SiPM saturation and optical crosstalk, because these phenomena may substantially affect the performance of SiPM‐based PCCT detectors with sub‐mm pixels. We present model validation experiments using a single‐pixel detector consisting of a 0.9 × 0.9 × 1.0 mm^3^ LuAP:Ce scintillation crystal coupled to a 1 × 1 mm^2^ SiPM. We subsequently use the validated model to compute the expected performance of the fast scint

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Author

Stefan J. van der Sar; Stefan E. Brunner; Dennis R. Schaart

Publisher

Wiley

Published

2021

Language

EN

Field

Medicine (Health Sciences)