CsI(Tl)阵列扫描成像评价

2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149) Pub Date : 2000-12-01 DOI:10.1109/NSSMIC.2000.949361

R. Pani, M. Cinti, R. Scafè, A. Soluri, R. Pellegriti, L. Indovina, G. de Vincentis, G. Trotta, N. Burgio, C. Ciavola, F. Garibaldi, G. Urciuoli, G. Zavattini, G. Di Domenico, D. Bollini, N. Lanconelli, A. Olivo, S. Pani, L. Rigon, A. Del Guerra

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引用次数: 5

摘要

我们建议使用Hamamatsu R7600-C8位置敏感光电倍增管(PSPMTs)作为一种实用的成像工具，通过评估其性能作为准直配置中闪烁阵列像素化的函数。对不同像素尺寸和厚度的CsI(Tl)闪烁阵列进行了测试。R7600 PSPMTs具有很高的固有空间分辨率，因此可以很容易地实现查找表，以准确地校正增益非均匀性响应和位置畸变。最后，一个小肿瘤的信噪比分析在扫描成像作为晶体像素化的功能是通过一个简单的乳房幻影进行。

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Imaging evaluation of CsI(Tl) arrays for scintimammography

We propose the use of Hamamatsu R7600-C8 position sensitive photomultiplier tubes (PSPMTs) as a practical tool for imaging in scintimammography, through the evaluation of performance as a function of scintillation array pixellation in collimated configurations. A number of CsI(Tl) scintillating arrays with different pixel size and thickness are tested. The very high intrinsic spatial resolution of R7600 PSPMTs made it easy to implement a look up table to correct accurately the gain nonuniformity response and position distortion. Finally, an SNR analysis of a small tumor in scintimammography as a function of crystal pixellation is performed by means of a simple breast phantom.

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2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149)

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