近场编码孔径成像的数据校正

Data correction for coded aperture in the near-field imaging

介绍了修正的均匀冗余阵列(MURA)编码孔径成像及其图象重建的基本原理。从理论上分析和探讨了编码孔径应用在近场核医学成像时,cos3θ项带来的近场效应及其校正方法,并通过计算机模拟实验验证了这种矫正方法的正确性和可靠性。

The principle and the method of reconstructing the image of coded aperture imaging with modi- fied uniformly redundant arrays were introduced. The near-field effect caused by cos^3θ factor and the correction method of the coded aperture imaging, for the near-field imaging in the nuclear medicine , were theoretically analyzed and discussed. The correction and the credibility were verified by computer simulation experiments.