IEEE Trans Med Imaging. 1983;2(1):24-30. doi: 10.1109/TMI.1983.4307609.
The problem of successive transverse plane reconstruction in single photon emission computerized tomography (SPECT) is modeled in its more general form, which implies the definition of emission tomographic operators (ETO's) for which an analytical solution can be derived. The properties of the attenuated tomographic operator (ATO) are described and discussed, including the attenuation which is distributed on the reconstruction domain. For this particular operator, a regularizing method (RIM) is proposed, for which it is demonstrated and tested with simulation studies that a filtered, accurate solution can be extracted for the tomographic images as obtained using a single photon emission tomograph based on a rotating gamma camera in clinical use.
在单光子发射计算机断层扫描（SPECT）中，连续横切面重建问题以更一般的形式建模，这意味着可以为其定义发射层析算子（ETO），并推导出解析解。衰减层析算子（ATO）的性质得到了描述和讨论，包括分布在重建域上的衰减。对于这个特殊的算子，提出了一种正则化方法（RIM），通过模拟研究证明和测试了该方法，该方法可以从基于临床使用的旋转γ相机的单光子发射断层扫描获得的层析图像中提取出滤波的、准确的解。
