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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment >Crystal and collimator optimization studies of a high-resolution γ-camera based on a position sensitive photomultiplier
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Crystal and collimator optimization studies of a high-resolution γ-camera based on a position sensitive photomultiplier

机译：基于位置敏感光电倍增管的高分辨率γ相机的晶体和准直器优化研究

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摘要

Studies have been performed in order to optimize the collimator and the crystal of a γ-camera based on a position sensitive photomultiplier with respect its efficiency, its spatial resolution and its cost. Several parallel hole collimators of different thicknesses have been tested and compared to each other. The homogeneous crystals' performance has also been compared to that of a pixelized CsI(Tl) crystal. It is shown that though the spatial resolution of the homogeneous crystals is not as good as that of the pixelized one it is still reasonable and it could probably be improved by the choice of a better position reconstruction algorithm.
机译：为了基于位置敏感光电倍增器的效率，空间分辨率和成本，已经进行了研究以优化准直器和γ相机的晶体。已测试并比较了几种不同厚度的平行孔准直器。还已将均质晶体的性能与像素化CsI（Tl）晶体的性能进行了比较。结果表明，尽管同质晶体的空间分辨率不如像素化晶体的空间分辨率高，但仍然是合理的，并且可以通过选择更好的位置重建算法来提高它。

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