ArticleMedical physics2021
Silicon photomultiplier-based scintillation detectors for photon-counting CT: A feasibility study.
Article in Medical physics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- A physics primer on photon-counting detectors in CT: Physics, signal formation, and performance.Medical physics · 2026Review
- Bulk single crystal growth and scintillation properties of Ce and Mg co-doped Y3Ga3Al2O12 for advanced X-ray imaging.Scientific reports · 2026Article
- Photon-counting CT in cancer radiotherapy: technological advances and clinical benefits.Physics in medicine and biology · 2025Review
- Overcoming the thermal limits of photon counting CT resolution using focal spot multiplexing: A feasibility study.Medical physics · 2025Article
- Guidelines for the Selection of Scintillators for Indirect Photon-Counting X-ray Detectors.Chemistry of materials : a publication of the American Chemical Society · 2025Review
- The potential of scintillator-based photon counting detectors: evaluation using Monte Carlo simulations.Proceedings of SPIE--the International Society for Optical Engineering · 2025Article
- Imaging performance of a LaBrMedical physics · 2025Article
- Framework for evaluating photon-counting detectors under pile-up conditions.Journal of medical imaging (Bellingham, Wash.) · 2024Article
- An energy-resolving photon-counting X-ray detector for computed tomography combining silicon-photomultiplier arrays and scintillation crystals.Communications engineering · 2024Article
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Authors and funding
3 authors.
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No grant is acknowledged in the PubMed record.
Abstract
purposeThe 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.
methodsWe 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
resultsThe model was found to be in good agreement with the validation experiments, both with respect to energy resolution and pulse shape. It shows how saturation progressively degrades the energy resolution of detectors equipped with currently available SiPMs as the pixel size decreases. Moreover, the expected pulse duration is relatively long (~200 ns) with these SiPMs. However, when LuAP:Ce and LaBr
conclusionsThis work provides first evidence that it may be feasible to develop SiPM-based scintillation detectors for PCCT that can compete with CdTe and CZT detectors in terms of energy resolution and rate capability.
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