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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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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