基于平板PMT的小型针孔SPECT系统设计

2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515) Pub Date : 2003-12-01 DOI:10.1109/NSSMIC.2003.1352234

R. Pellegrini, R. Pani, M. Cinti, C. Trotta, G. Iurlaro, M. Betti, P. Bennati, F. Cusanno, F. Garibaldi, S. Ridolfi, M. Mattioli, S. Majewski, B. Tsui

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引用次数: 1

摘要

目前新型伽玛成像仪的发展使探测器具有超高空间分辨率和非常紧凑的尺寸，适用于PET和SPET应用。本文分析和讨论了基于平面PSPMT和不同闪烁阵列设计的新型针孔SPECT扫描仪的可能设计，如NaI(Tl)， 1mm像素尺寸，CsI(Tl)多层阵列，安装在偏心配置，以提高成像仪的固有空间分辨率。结果表明，2/ sp1倍/2 Hamamatsu平板pspmt阵列与1 mm像素尺寸的NaI(Tl)闪烁阵列耦合，是针孔SPET扫描仪在紧凑性和空间分辨率之间的最佳折衷。使用离中心CsI(Tl)闪烁阵列耦合到单个平板PSPMT，可以以非常低的成本安排高灵敏度和非常紧凑的针孔SPET扫描仪，仅比Anger伽玛相机针孔SPECT恶化50%的空间分辨率。

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Design of compact pinhole SPECT system based on flat panel PMT

The present development of new gamma imagers has allowed to realize detectors with ultra high spatial resolution and very compact size for PET as well as for SPET application. In this paper we analyze and discuss the possible design of new pinhole SPECT scanners based on heads which consist of flat panel PSPMT and different design of scintillation arrays like NaI(Tl), 1 mm pixel size, and CsI(Tl) multi layers array, mounted in off centered configuration to improve the intrinsic spatial resolution of the imagers. The results show that an array configuration 2/spl times/2 Hamamatsu flat panel PSPMTs coupled to NaI(Tl) scintillation array with 1 mm pixel size, represents the best trade off between compactness and spatial resolution of pinhole SPET scanner. The use of off centered CsI(Tl) scintillation array coupled to a single flat panel PSPMT allows to arrange a high sensitivity and very compact pinhole SPET scanner at very low cost only worsening of 50% spatial resolution than an Anger gamma camera pinhole SPECT.

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2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515)

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