ArticleMedical physics2015
Evaluation of Matrix9 silicon photomultiplier array for small-animal PET.
Article in Medical physics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- PET Detectors Based on Multi-Resolution SiPM Arrays.IEEE transactions on radiation and plasma medical sciences · 2024Article
- A high resolution and high detection efficiency depth-encoding detector for brain positron emission tomography based on a 0.75 mm pitch scintillator array.Journal of instrumentation : an IOP and SISSA journal · 2021Article
- A depth-of-interaction encoding PET detector module with dual-ended readout using large-area silicon photomultiplier arrays.Physics in medicine and biology · 2018Article
- Performance of a high-resolution depth-encoding PET detector module using linearly-graded SiPM arrays.Physics in medicine and biology · 2018Article
- A Time-Walk Correction Method for PET Detectors Based on Leading Edge Discriminators.IEEE transactions on radiation and plasma medical sciences · 2017Article
- Performance Comparison of Different Readouts for Position-Sensitive Solid-State Photomultiplier Arrays.Biomedical physics & engineering express · 2017Article
- Characterization of Large-Area SiPM Array for PET Applications.IEEE transactions on nuclear science · 2016Article
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Authors and funding
9 authors.
Funding
Abstract
purposeThe MatrixSL-9-30035-OEM (Matrix9) from SensL is a large-area silicon photomultiplier (SiPM) photodetector module consisting of a 3 × 3 array of 4 × 4 element SiPM arrays (total of 144 SiPM pixels) and incorporates SensL's front-end electronics board and coincidence board. Each SiPM pixel measures 3.16 × 3.16 mm(2) and the total size of the detector head is 47.8 × 46.3 mm(2). Using 8 × 8 polished LSO/LYSO arrays (pitch 1.5 mm) the performance of this detector system (SiPM array and readout electronics) was evaluated with a view for its eventual use in small-animal positron emission tomography (PET).
methodsMeasurements of noise, signal, signal-to-noise ratio, energy resolution, flood histogram quality, timing resolution, and array trigger error were obtained at different bias voltages (28.0-32.5 V in 0.5 V intervals) and at different temperatures (5 °C-25 °C in 5 °C degree steps) to find the optimal operating conditions.
resultsThe best measured signal-to-noise ratio and flood histogram quality for 511 keV gamma photons were obtained at a bias voltage of 30.0 V and a temperature of 5 °C. The energy resolution and timing resolution under these conditions were 14.2% ± 0.1% and 4.2 ± 0.1 ns, respectively. The flood histograms show that all the crystals in the 1.5 mm pitch LSO array can be clearly identified and that smaller crystal pitches can also be resolved. Flood histogram quality was also calculated using different center of gravity based positioning algorithms. Improved and more robust results were achieved using the local 9 pixels for positioning along with an energy offset calibration. To evaluate the front-end detector readout, and multiplexing efficiency, an array trigger error metric is introduced and measured at different lower energy thresholds. Using a lower energy threshold greater than 150 keV effectively eliminates any mispositioning between SiPM arrays.
conclusionsIn summary, the Matrix9 detector system can resolve high-resolution scintillator arrays common in small-animal PET with adequate energy resolution and timing resolution over a large detector area. The modular design of the Matrix9 detector allows it to be used as a building block for simple, low channel-count, yet high performance, small animal PET or PET/MRI systems.
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