Comparison of NaI(T1), CdTe, and HgI2 surgical probes: effect of scatter compensation on probe performance.
Comparison of NaI(T1), CdTe, and HgI2 surgical probes: effect of scatter compensation on probe performance.
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NaI(T1)、CdTe 和 HgI2 手术探头的比较：散射补偿对探头性能的影响。
DOI：
10.1118/1.596683
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发表时间：
1991
期刊：
影响因子：
3.8
通讯作者：
Woolfenden,JM
中科院分区：
文献类型：
--
作者：
Kwo,DP;Barber,HB;Barrett,HH;Hickernell,TS;Woolfenden,JM
背景源分布的空间变化使得单探测器探头难以检测肿瘤。使用一个单一的能量窗口，括号中的峰有助于区分由康普顿散射占主导地位的背景事件。另一种办法是利用康普顿地区另一个窗口提供的信息。使用最佳单侧能量窗和双窗散射减影技术，在肿瘤分期手术的真实模拟下比较了NaI（Tl）、CdTe和HgI2手术探头的性能。结果表明，尽管探测器的能量分辨率不同，但当使用最佳单能量窗口时，探测器在可变背景中的性能相似。当背景变化较大时，使用由第二窗口提供的信息改善了探测性能。
Spatial variation in the background source distribution makes tumor detection difficult for single‐detector probes. Using a single energy window that brackets the photopeak helps discriminate against background events dominated by Compton scattering. Another approach is to use the information provided by an additional window in the Compton region. The performances of NaI(Tl), CdTe, and HgI2surgical probes have been compared under realistic simulations of a tumor‐staging procedure using optimal single‐sided energy windows and a two‐window scatter‐subtraction technique. Results showed that despite the differences in energy resolution of the detectors, the performances of the probes in a variable background were similar when optimal single energy windows were used. When the background variations were large, using information provided by a second window improved probe performance.