Energy and coincidence time resolution measurements of CdTe detectors for PET
Energy and coincidence time resolution measurements of CdTe detectors for PET
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DOI：
10.1088/1748-0221/8/02/c02015
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发表时间：
2013-02-01
影响因子：
1.3
通讯作者：
Uzun, D.
中科院分区：
文献类型：
--
作者：
Arino, G.;Chmeissani, M.;Uzun, D.
我们报告的表征，2毫米厚的碲化镉二极管探测器与肖特基接触，采用一种新的概念设计的PET扫描仪。在-8 ° C和施加的-1000 V/mm的偏置电压下的结果显示在511 keV下的1.2%FWHM能量分辨率。重合时间分辨率已被测量上的触发器的输出信号，以提高探测器的时间分辨率。在相同的偏压和温度条件下，半高宽为6 ns，最小接受能量为500 keV。这些结果表明，像素化CdTe肖特基二极管是开发下一代核医学成像设备的优秀候选器件，如PET，Compton伽马相机，特别是PET-MRI混合系统，当用于磁场免疫配置时。
We report on the characterization of 2mm thick CdTe diode detector with Schottky contacts to be employed in a novel conceptual design of PET scanner. Results at -8 degrees C with an applied bias voltage of -1000 V/mm show a 1.2% FWHM energy resolution at 511 keV. Coincidence time resolution has been measured by triggering on the preamplifier output signal to improve the timing resolution of the detector. Results at the same bias and temperature conditions show a FWHM of 6 ns with a minimum acceptance energy of 500 keV.hese results show that pixelated CdTe Schottky diode is an excellent candidate for the development of next generation nuclear medical imaging devices such as PET, Compton gamma cameras, and especially PET-MRI hybrid systems when used in a magnetic field immune configuration.