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用于泊松噪声的噪声加权滤波反投影算法与标准最大似然期望最大化（MLEM）算法的比较。

Comparison of a noise-weighted filtered backprojection algorithm with the Standard MLEM algorithm for poisson noise.

作者信息

Zeng Gengsheng L

机构信息

Department of Engineering, Weber State University, Ogden, Utah, and Utah Center for Advanced Imaging Research (UCAIR), Department of Radiology, University of Utah, Salt Lake City, Utah.

出版信息

J Nucl Med Technol. 2013 Dec;41(4):283-8. doi: 10.2967/jnmt.113.127399. Epub 2013 Oct 24.

DOI:10.2967/jnmt.113.127399
PMID:24159012
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4243832/
Abstract

Iterative maximum-likelihood expectation maximization and ordered-subset expectation maximization algorithms are excellent for image reconstruction and usually provide better images than filtered backprojection (FBP). Recently, an FBP algorithm able to incorporate noise weighting during reconstruction was developed. This paper compares the performance of the noise-weighted FBP algorithm and the iterative maximum-likelihood expectation maximization algorithm with Poisson noise-corrupted emission data generated by computer simulations and a SPECT experimental study. The results show comparable performance for these 2 algorithms.

摘要

迭代最大似然期望最大化算法和有序子集期望最大化算法在图像重建方面表现出色，通常能提供比滤波反投影（FBP）更好的图像。最近，开发了一种在重建过程中能够纳入噪声加权的FBP算法。本文比较了噪声加权FBP算法与迭代最大似然期望最大化算法的性能，使用计算机模拟和单光子发射计算机断层扫描（SPECT）实验研究生成的泊松噪声污染发射数据。结果表明这两种算法具有相当的性能。

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本文引用的文献

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A filtered backprojection algorithm with ray-by-ray noise weighting.一种逐线加权滤波反投影算法。
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A filtered backprojection MAP algorithm with nonuniform sampling and noise modeling.带非均匀采样和噪声建模的滤波反投影 MAP 算法。
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Precision and accuracy of regional radioactivity quantitation using the maximum likelihood EM reconstruction algorithm.使用最大似然 EM 重建算法进行局部放射性定量的精确性和准确性。
IEEE Trans Med Imaging. 1994;13(3):526-37. doi: 10.1109/42.310884.
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Reducing negativity artifacts in emission tomography: post-processing filtered backprojection solutions.降低发射断层成像中的负像伪影：后处理滤波反投影解。
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Penalized weighted least-squares approach to sinogram noise reduction and image reconstruction for low-dose X-ray computed tomography.用于低剂量X射线计算机断层扫描的罚加权最小二乘法进行正弦图降噪和图像重建
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