Resolution improvement using a fiber optic plate for a small field-of-view NaI(Tl) gamma camera
Resolution improvement using a fiber optic plate for a small field-of-view NaI(Tl) gamma camera
复制标题
使用光纤板提高小视场 NaI(Tl) 伽马相机的分辨率
DOI：
10.1109/tns.2005.862965
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发表时间：
2006
影响因子：
1.8
通讯作者：
S. Yamamoto
中科院分区：
文献类型：
--
作者：
S. Yamamoto
为了提高由NaI（Tl）闪烁体和位置敏感光电倍增管（PSPMT）组成的小视场γ相机的空间分辨率，比较了带有光纤板的NaI（Tl）闪烁体和使用传统玻璃板的闪烁体的光输出性能。由于光纤板限制了光分布并使其变窄，因此提高了空间分辨率。使用20/spl times/20 mm，2 mm厚的NaI（Tl）晶体管，玻璃板和光纤板，测量和比较性能。使用光纤板，闪烁光输出比玻璃板少35%。与光纤板的平均空间分辨率为0.98毫米的半高全宽（FWHM），而与玻璃板为1.48毫米的FWHM为122千电子伏，钴-57伽玛光子。虽然光输出减少，但空间分辨率显著提高。这些结果表明，NaI（Tl）与光纤板的光输出是有前途的PSPMT为基础的小视场伽马相机。
To improve the spatial resolution of a small field-of-view gamma camera composed of a NaI(Tl) scintillator and a position sensitive photo-multiplier tube (PSPMT), the performance of an NaI(Tl) scintillator with a fiber optic plate for a light output was compared with that of such a scintillator using a conventional glass plate. Since the fiber optic plate limits the light distribution and makes it narrower, spatial resolution is improved. Using 20/spl times/20 mm, 2-mm-thick NaI(Tl) scintillators with a glass plate and with a fiber optic plate, performance was measured and compared. Using the fiber optic plate, the scintillation light output was 35% less than with a glass plate. The average spatial resolution with the fiber optic plate was 0.98-mm full width at half maximum (FWHM) while that with the glass plate was 1.48 mm FWHM for 122-keV, Co-57 gamma photons. Although light output decreased, spatial resolution dramatically improved. These results indicate that the NaI(Tl) with a fiber optic plate for light output is promising for PSPMT-based small field-of-view gamma cameras.
基于 PSPMT 的闪烁放射成像探测器的性能。
影响因子：
3.5
作者：
Williams,MB;Williams,MB;Goode,AR;Galbis-Reig,V;Majewski,S;Weisenberger,AG;Wojcik,R
通讯作者：
Wojcik,R