A high speed position-decoding electronics for BGO block detectors in PET
A high speed position-decoding electronics for BGO block detectors in PET
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用于 PET 中 BGO 块检测器的高速位置解码电子器件
DOI：
10.1109/nssmic.1999.845813
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Yu Wang
中科院分区：
文献类型：
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作者：
Hongdi Li;W. Wong;J. Uribe;H. Baghaei;N. Zhang;Junming Wang;Yu Wang
研制了一种用于PET中EGO块探测器γ事件定位的高速原型电子学。它采用了作者提出的非成像探头和伽马相机的“高产堆积事件恢复”方法（HYPER）。HYPER对多个/连续堆积条件使用循环残差减法。利用HYPER方法对常规的Anger定位算法进行了改进。HYPER-Anger定位电路设计用于单个EGO块或块阵列，并在EGO块上进行测试（2/spl times/2 cm，4 PMT上有7/spl times/7个元件）。该块甚至在800 kcps下也被很好地解码，这比EGO块的典型最大速率130 kcps高6-7/spl倍。位置解码电子器件可用于增加常规EGO PET的最大成像速率或补偿PMT象限共享探测器设计的较低成像速率，该设计使横轴和轴向方向的空间分辨率加倍。
A high-speed prototype electronics for positioning gamma event at EGO block detectors in PET has been developed. It adapts the "high-yield pileup-event recovery" method (HYPER) proposed by the authors for nonimaging probes and gamma camera. HYPER uses recurring residual subtractions for multiple/continuous pileup conditions. The regular Anger positioning algorithm was modified by the HYPER method. The HYPER-Anger positioning circuit was designed for individual EGO blocks or block arrays and tested on a EGO block (2/spl times/2 cm with 7/spl times/7 elements on 4 PMT). The block was well decoded even at 800 kcps, which is 6-7/spl times/ higher than the typical maximum rate of 130 kcps for EGO blocks. The position-decoding electronics may be used to increase the maximum imaging-rate of regular EGO PET or to compensate for the lower imaging rate of the PMT-quadrant-sharing detector design, which doubles spatial resolution in both transaxial and axial directions.