Study of the characteristics of a scintillation array and single pixels for nuclear medicine imaging applications

ZHU Jie; MA Hong-Guang; MA Wen-Yan; ZENG Hui; WANG Zhao-Min; XU Zi-Zong

doi:10.1088/1674-1137/33/4/009

Chinese Physics C> 2009, Vol. 33> Issue(4) : 285-288 DOI: 10.1088/1674-1137/33/4/009

Study of the characteristics of a scintillation array and single pixels for nuclear medicine imaging applications

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Abstract：
By using a pixelized Nal(Tl) crystal array coupled to a R2486 PSPMT, the characteristics of the array and of a single pixel, such as the light output, energy resolution, peak-to-valley ratio (P/V) and imaging performance of the detector were studied. The pixel size of the NaI(TI) scintillation pixel array is 2 mm×2 mm×5 mm. There are in total 484 pixels in a 22×22 matrix. In the pixel spectrum an average peak-to-valley ratio (P/V) of 16 was obtained. In the image of all the pixels, good values for the Peak-to-Valley ratios could be achieved, namely a mean of 17, a maximum of 45 and the average peak FWHM (the average value of intrinsic spatial resolution) of 2.3 mm. However, the PSPMT non-uniform response and the scintillation pixels array inhomogeneities degrade the imaging performance of the detector.

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ZHU Jie, MA Hong-Guang, MA Wen-Yan, ZENG Hui, WANG Zhao-Min and XU Zi-Zong. Study of the characteristics of a scintillation array and single pixels for nuclear medicine imaging applications[J]. Chinese Physics C, 2009, 33(4): 285-288. doi: 10.1088/1674-1137/33/4/009

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Received: 2008-07-11
Revised: 2008-08-21

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of the characteristics of a scintillation array and single pixels for nuclear medicine imaging applications

Corresponding author: ZHU Jie,

Received Date: 2008-07-11

Accepted Date: 2008-08-21

Available Online: 2009-04-05

Abstract:

By using a pixelized Nal(Tl) crystal array coupled to a R2486 PSPMT, the characteristics of the array and of a single pixel, such as the light output, energy resolution, peak-to-valley ratio (P/V) and imaging performance of the detector were studied. The pixel size of the NaI(TI) scintillation pixel array is 2 mm×2 mm×5 mm. There are in total 484 pixels in a 22×22 matrix. In the pixel spectrum an average peak-to-valley ratio (P/V) of 16 was obtained. In the image of all the pixels, good values for the Peak-to-Valley ratios could be achieved, namely a mean of 17, a maximum of 45 and the average peak FWHM (the average value of intrinsic spatial resolution) of 2.3 mm. However, the PSPMT non-uniform response and the scintillation pixels array inhomogeneities degrade the imaging performance of the detector.

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Study of the characteristics of a scintillation array and single pixels for nuclear medicine imaging applications

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