Model based scatter correction in three dimensions (positron emission tomography)

J. Ollinger, G. Johns, M. T. Burney
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引用次数: 14

Abstract

A method for approximating the mean of the distribution of scattered events in which only one of the two photons is scattered is presented. The technique uses emission images, transmission images, and the physics of Compton scatter to compute the estimate with a table-driven approach. Although implemented for use with scanners using interplane septa, the algorithm is three-dimensional in nature and can be easily extended for use with fully 3-D data. Preliminary phantom studies show good agreement between the estimated and experimental scatter distributions.<>
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基于模型的三维散射校正(正电子发射层析成像)
提出了一种近似散射事件分布均值的方法,其中两个光子中只有一个被散射。该技术使用发射图像、传输图像和康普顿散射的物理特性,以表驱动的方法计算估计。虽然该算法是为使用平面间隔的扫描仪而实现的,但它本质上是三维的,可以很容易地扩展到使用全三维数据。初步的模拟研究表明,估计的散射分布和实验的散射分布吻合得很好
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