| a-Si FPD在闪光X光照相中的应用可行性实验研究 |
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| 引用本文： | 肖智强,王远.a-Si FPD在闪光X光照相中的应用可行性实验研究[J].核电子学与探测技术,2009,29(6). |
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| 作者姓名： | 肖智强 王远 |
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| 作者单位： | 1. 中国工程物理研究院流体物理研究所一室,四川,绵阳,621900
2. 中国工程物理研究院应用电子学研究所四室,四川,绵阳,521900 |
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| 摘 要： | 非晶硅平板探测器(a-Si Flat Panel Detector)已在无损检测、医疗领域的连续式X光照相中得到了广泛应用,但在脉冲式(ns量级)闪光X光照相中的应用可行性及成像性能却未见报导.本文利用Varian公司生产的PaxScan 2520 HE型非晶硅平板探测器为接收系统,在450keV脉冲X光机上开展了闪光照相实验,考察了该探测器的应用可行性,测量了其探测灵敏度、像质计灵敏度、线扩散函数(LSF)及调制传递函数(MTF).实验结果表明该探测器可应用于闪光X光照相,且探测灵敏度较高,空间分辨率较好,是一种有前景的闪光X光照相图像接收系统.
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| 关 键 词： | 闪光X照相 可行性 成像性能 实验研究 |
Experimental Study of the Application Feasibility of a-Si FPD for Flash x-ray Radiography |
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| XIAO Zhi-qiang,WANG Yuan.Experimental Study of the Application Feasibility of a-Si FPD for Flash x-ray Radiography[J].Nuclear Electronics & Detection Technology,2009,29(6). |
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| Authors: | XIAO Zhi-qiang WANG Yuan |
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| Abstract: | Although a-Si FPD has proven to be quick and efficient for producing high quality digital images for continuous x-ray radiography, it has not been reported about the application feasibility of a-Si FPD in flash (from several to tens nanoseconds) x-ray radiography. In this paper, an a-Si FPD (Varian PaxScan 2520 HE) was used as imaging system in 450keV flash x-ray radiography to investigate the application feasibility. The detecting sensitivity was evaluated by step method. Imaging Quality Index (IQI) sensi-tivity was measured. Line spread function (LSF) and modulation transfer function (MTF) were acquired by knife-edge method and Fourier transform. The results demonstrated that a-Si FPD is an attractive de-tector for flash x-ray radiography with quality images. |
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| Keywords: | a-Si FPDD a-Si FPD flash x-ray radiography feasibility performance experimental study |
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