Physical imaging performance of a compact computed radiography acquisition device.
Physical imaging performance of a compact computed radiography acquisition device.
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紧凑型计算机放射线摄影采集设备的物理成像性能。
DOI：
10.1118/1.598212
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发表时间：
1998
期刊：
影响因子：
3.8
通讯作者：
A. Cowen
中科院分区：
文献类型：
--
作者：
S. Kengyelics;J. Launders;A. Cowen
使用第五代图像板技术对飞利浦 AC3 计算机放射成像系统的物理成像性能进行了全面研究。测量包括以 10 像素/毫米采样的标准和高分辨率图像板的特征响应、调制传递函数 (MTF) 和维纳谱 (WS)。这些结果用于计算系统性能的噪声等效量子 (NEQ) 和检测量子效率 (DQE) 谱描述。发光噪声和X射线量子噪声分量被分离。根据发光噪声功率的估计，计算出平均系统增益，结果表明，与前几代标准图像板的计算机放射成像系统相比，有了显着的改进。
A comprehensive investigation of the physical imaging performance of a Philips AC3 computed radiography system using fifth-generation image plate technology has been undertaken. Measurements include characteristic response, modulation transfer function (MTF) and Wiener spectra (WS) for standard and high resolution image plates sampled at 10 pixels/mm. These results were used to calculate noise equivalent quanta (NEQ) and detective quantum efficiency (DQE) spectral descriptions of system performance. Luminescence noise and x-ray quantum noise components were separated. From an estimate of the luminescence noise power, the average system gain was calculated and results show a substantial improvement over earlier generations of computed radiography systems for standard image plates.