FULLY 3-DIMENSIONAL POSITRON EMISSION TOMOGRAPHY
FULLY 3-DIMENSIONAL POSITRON EMISSION TOMOGRAPHY
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DOI：
10.1088/0031-9155/25/1/010
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发表时间：
1980-01-01
影响因子：
3.5
通讯作者：
COLSHER, JG
中科院分区：
文献类型：
--
作者：
COLSHER, JG
本文提出了一种全三维正电子发射断层成像的重建算法。重建问题在数学上表示为一个点扩散函数与未知正电子活度分布的三维卷积积分。采用傅里叶变换的方法来解决重建问题。该算法的性能进行了评估，使用模拟体模数据产生的Monte Carlo计算机程序和体模数据从塞尔正电子相机。该方法是计算上可行的，并在准确的重建结果。
A reconstruction algorithm is derived for fully 3-dimensional positron emission tomography. The reconstruction problem is formulated mathematically as a 3-dimensional convolution integral of a point spread function with an unknown positron activity distrbution. Fourier transform methods are used to solve the reconstruction. Performance of the algorithm is evaluated using simulated phantom data produced by a Monte Carlo computer program and phantom data from a Searle Positron Camera. The method is computationally feasible and results in accurate reconstructions.