Zero-dark-counting high-speed X-ray photon detection using a cerium-doped yttrium aluminum perovskite crystal and a small photomultiplier tube and its application to gadolinium imaging
Zero-dark-counting high-speed X-ray photon detection using a cerium-doped yttrium aluminum perovskite crystal and a small photomultiplier tube and its application to gadolinium imaging
复制标题
DOI：
10.7567/jjap.53.040304
复制
发表时间：
2014-04
影响因子：
1.5
通讯作者：
Satoshi Yamaguchi;E. Sato;Yasuyuki Oda;R. Nakamura;H. Oikawa;Tomonori Yabuushi;H. Ariga;S. Ehara
中科院分区：
文献类型：
--
作者：
Satoshi Yamaguchi;E. Sato;Yasuyuki Oda;R. Nakamura;H. Oikawa;Tomonori Yabuushi;H. Ariga;S. Ehara
使用衰减时间为30 ns的铈掺杂钇铝钙钛矿[雅普（Ce）]单晶闪烁体和小型光电倍增管（SPMT）检测X射线光子。SPMT的负输出脉冲经高速反相放大器放大后，送入多道分析仪进行X射线谱测量。在59.5keV处，谱仪的能量分辨率为15%。我们进行了光子计数计算机断层扫描，使用钆介质的最大速率为每秒650千计数，并确认了能量色散效应与事件脉冲的描述电压的变化，使用高速比较器。
X-ray photons are detected using a cerium-doped yttrium aluminum perovskite [YAP(Ce)] single-crystal scintillator with a decay time of 30 ns and a small-sized photomultiplier tube (SPMT). The negative output pulse from the SPMT is amplified by a high-speed inverse amplifier, and the event pulses are sent to a multichannel analyzer to measure X-ray spectra. The energy resolution of the spectrometer was 15% at 59.5 keV. We carried out photon-counting computed tomography using gadolinium media with a maximum rate of 650 kilo counts per second and confirmed the energy-dispersive effect with changes in the description voltage of event pulses using a high-speed comparator.