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Modification of Green's One-Step-Late Algorithm for Attenuated Emission Data

Modification of Green's One-Step-Late Algorithm for Attenuated Emission Data

Gengsheng L Zeng

Biomed Phys Eng Express. 2019 Apr;5(3):037001.

PMID: 32351710

Abstract:

Green's one-step-late (OSL) algorithm is a popular image reconstruction algorithm in emission-data tomography, in spite of its convergence issues. One drawback of Green's algorithm is that the algorithm exhibits non-stationary regularization when the algorithm's projector and backprojector model the attenuation effects in single photon emission computed tomography (SPECT). This paper suggests a remedy to improve Green's OSL algorithm so that stationary regularization can be obtained. This paper also observes some similarities between the modified Green's OSL algorithm and the gradient descent algorithm.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP3087169	Green S		3087-16-9	Price

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