Low power implementation of high frequency SiPM readout for Cherenkov and scintillation detectors in TOF-PET.
Low power implementation of high frequency SiPM readout for Cherenkov and scintillation detectors in TOF-PET.
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DOI：
10.1088/1361-6560/ac8963
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发表时间：
2022-09-26
影响因子：
3.5
通讯作者：
中科院分区：
文献类型：
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用于基于硅光电倍增管（SiPM）的闪烁探测器的最新技术水平（SoA）电子读出，其证明了可实现的符合时间分辨率（CTR）的实验极限，利用低噪声、高频信号处理来促进接近SiPM架构极限的单光子时间响应。这种读出策略可以最佳地利用快速发光和提示光子群体，并且有前途的测量显示，相对于临床系统中的SoA，采用这种读出的探测器概念可以大大提高PET探测器CTR。然而，该技术采用高功耗组件，这使得电子链对于通道密集的飞行时间（TOF）-PET探测器来说不切实际。我们已经开发并测试了一种低噪声和高频率的读出电路，该电路在低功耗下具有高性能，并且由具有小尺寸的分立元件组成，使其能够集成到TOF-PET探测器原型中。具有该读出链的3 × 3 mm 2 Broadcom SiPM在10 mW功耗下表现出低于100 ps的单光子时间分辨率，在5 mW下性能下降相对较小，为120 ± 2 ps FWHM。用3 × 3 × 20 mm 3 LYSO和快速LGSO晶体管测量CTR，在最佳功率工作时，CTR分别为127 ± 3 ps和113 ± 2 ps，在5 mW时，CTR分别为133 ± 2 ps和121 ± 3 ps。尺寸为3 × 3 × 20 mm 3的BGO晶体在最佳功耗下的FWHM CTR为271 ± 5 ps（FWTM为1174 ± 14 ps），在5 mW下为289 ± 8 ps（FWTM为1296 ± 33 ps）。实现这种性能的紧凑且低功率的读出拓扑结构因此提供了一个平台，以极大地提高PET系统CTR，并且还提供了以降低的材料成本提供高性能TOF-PET的机会。
State-of-the-art (SoA) electronic readout for silicon photomultiplier (SiPM)-based scintillation detectors that demonstrate experimental limits in achievable coincidence time resolution (CTR) leverage low noise, high frequency signal processing to facilitate a single photon time response that is near the limit of the SiPMs architecture. This readout strategy can optimally exploit fast luminescence and prompt photon populations, and promising measurements show detector concepts employing this readout can greatly advance PET detector CTR, relative to SoA in clinical systems. However, the technique employs power hungry components which make the electronics chain impractical for channel-dense time-of-flight (TOF)-PET detectors. We have developed and tested a low noise and high frequency readout circuit which is performant at low power and consists of discrete elements with small footprints, making it feasible for integration into TOF-PET detector prototypes. A 3 × 3 mm2 Broadcom SiPM with this readout chain exhibited sub-100 ps single photon time resolution at 10 mW of power consumption, with a relatively minor performance degradation to 120 ± 2 ps FWHM at 5 mW. CTR measurements with 3 × 3 × 20 mm3 LYSO and fast LGSO scintillators demonstrated 127 ± 3 ps and 113 ± 2 ps FWHM at optimal power operation and 133 ± 2 ps and 121 ± 3 ps CTR at 5 mW. BGO crystals 3 × 3 × 20 mm3 in size show 271 ± 5 ps FWHM CTR (1174 ± 14 ps full-width-at-tenth-maximum (FWTM)) at optimal power dissipation and 289 ± 8 ps (1296 ± 33 ps FWTM) at 5 mW. The compact and low power readout topology that achieves this performance thereby offers a platform to greatly advance PET system CTR and also opportunities to provide high performance TOF-PET at reduced material cost.
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影响因子：
3.5
作者：
Cates, Joshua W.;Levin, Craig S.
通讯作者：
Levin, Craig S.
DOI：
10.1016/j.nima.2018.10.205
发表时间：
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影响因子：
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作者：
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通讯作者：
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发表时间：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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