Experimental Study on Image Shrinkage in a Planar Crystal γ Camera

ZENG HaiNing; XU ZiZong; WANG ZhaoMin; LIU ShiTao; CHEN ChengLin

Chinese Physics C> 2000, Vol. 24> Issue(11) : 1050-1054

Experimental Study on Image Shrinkage in a Planar Crystal γ Camera

Department of Modern Physics, University of Science & Technology of China Hefei 230026, China

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Abstract：
The effect of the crystal's type and treatment on the performance of gamma camera consisting of planar crystal and position sensitive photomulitiplier tube (PSPMT) is studied via experiment. The results demonstrate that: (1) treatment of the edge surface of the crystal is very sensitive to the shrinkage of image, and the side-absorptionsurface is the best choice; (2) the intrinsic spatial resolution of the CsI (T1) crystal camera is worse due to its low light yield: in the center part it is - 1cm (FWHM) for 2mm aperture collirnated 241Am source; while using NaI(T1) crystal, it is -4mm.

References

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Suzuki S, Nakaya T, Suzuki A, et al. IEEE Trans. Nucl. Sci., 1993, 40(4):431–433 2 Anger H O, IEEE Trans. Nucl. Sci., 1966, NS– 13:380–3923 Bird A J, Ramsden D. Nucl. Instr. And Meth., 1990, A299:480–4834 Guru S V, He Z, Ferreria, J C et al. Nucl. Instr. And Meth., 1994, A353:328–333 5 Redus R H., Nagarker V, Cirignano L J et al. IEEE Trans. Nucl. Sci., 1992, 39(4):948–951 6 Clancy R L, Thompson C J, Robar J L et al. IEEE Trans. Nucl. Sci., 1997, 44(3):494–498 7 He Z, Bird A J, Ramsden D et al. IEEE Trans. Nucl. Sci., 1993, 40(4):447–451 8 Blazek K, de. Notaristerfani F, Maly P et al. IEEE Trans. Nucl. Sci., 1995, 42(5):1474–14829 ZENG HaiNing, YAN ShiKui, WANG ZhaoMin et al. A Small Gamma Camera based on PSPMT submitted to (Nuclear Techniques)(曾海宁,严世奎,汪兆民等,基于位置灵敏光电倍增管的小型γ相机,核技术,等发表).10 ZENG HaiNing, XU ZiZong, WANG ZhaoMin. High Energy Phys. and Nucl. Phys. (in Chinese), 2000, 24(2):124–130(曾海宁,许咨宗,汪兆民等,高能物理与核物理,2000,24(2):124—130)(曾海宁,许咨宗,汪兆民等,高能物理与核物理,2000,24(2)124—130)

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ZENG HaiNing, XU ZiZong, WANG ZhaoMin, LIU ShiTao and CHEN ChengLin. Experimental Study on Image Shrinkage in a Planar Crystal γ Camera[J]. Chinese Physics C, 2000, 24(11): 1050-1054.

ZENG HaiNing, XU ZiZong, WANG ZhaoMin, LIU ShiTao and CHEN ChengLin. Experimental Study on Image Shrinkage in a Planar Crystal γ Camera[J]. Chinese Physics C, 2000, 24(11): 1050-1054. shu

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Received: 1999-10-11
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Experimental Study on Image Shrinkage in a Planar Crystal γ Camera

Corresponding author: ZENG HaiNing,

Department of Modern Physics, University of Science & Technology of China Hefei 230026, China

Received Date: 1999-10-11
Accepted Date: 1900-01-01
Available Online: 2000-11-05

Abstract: The effect of the crystal's type and treatment on the performance of gamma camera consisting of planar crystal and position sensitive photomulitiplier tube (PSPMT) is studied via experiment. The results demonstrate that: (1) treatment of the edge surface of the crystal is very sensitive to the shrinkage of image, and the side-absorptionsurface is the best choice; (2) the intrinsic spatial resolution of the CsI (T1) crystal camera is worse due to its low light yield: in the center part it is - 1cm (FWHM) for 2mm aperture collirnated 241Am source; while using NaI(T1) crystal, it is -4mm.