A Dual-Ended Readout Detector Using a Meantime Method for SiPM TOF-DOI PET
A Dual-Ended Readout Detector Using a Meantime Method for SiPM TOF-DOI PET
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DOI：
10.1109/tns.2015.2449891
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发表时间：
2015-10-01
影响因子：
1.8
通讯作者：
Hong, Seong Jong
中科院分区：
文献类型：
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作者：
Kang, Han Gyu;Ko, Guen Bae;Hong, Seong Jong
我们研究了基于两个硅光电倍增管 (SiPM) 的双端读出探测器，使用 30 mm 长的掺铈镥钇氧原硅酸盐 (Lu0.5Y1.4Si0.5 : Ce, LYSO) 晶体来研究飞行时间 (TOF) 和相互作用深度 (DOI) 正电子发射断层扫描 (PET) 的可行性。为了提高双端读出检测器的定时分辨率，采用了一种新颖的时间测量。该时间是通过对两个 SiPM 的两个信号到达时间进行平均而获得的，每个 SiPM 都连接到 LYSO 晶体的两端。同时方法最小化沿晶体的到达时间差。使用同时方法的计时和 DOI 分辨率都优于单端读出检测器。
We have investigated a dual-ended readout detector based on two silicon photo-multipliers (SiPMs) using a 30 mm long cerium-doped lutetium-yttrium oxyorthosilicate (Lu0.5Y1.4Si0.5 : Ce, LYSO) crystal to study the feasibility of a time-of-flight (TOF) and depth-of-interaction (DOI) positron emission tomography (PET). To improve the timing resolution in the dual-ended readout detector, a novel meantime measurement was employed. The meantime was obtained by averaging two signal arrival times at two SiPMs, each of which was attached to both ends of the LYSO crystal. The meantime method minimizes the arrival time difference along the crystal. Both timing and DOI resolutions using the meantime method were better than those of a single-ended readout detector.