ADMM-EM Method forL1-Norm Regularized Weighted Least Squares PET Reconstruction
نویسندگان
چکیده
منابع مشابه
ADMM-EM Method for L1-Norm Regularized Weighted Least Squares PET Reconstruction
The L1-norm regularization is usually used in positron emission tomography (PET) reconstruction to suppress noise artifacts while preserving edges. The alternating direction method of multipliers (ADMM) is proven to be effective for solving this problem. It sequentially updates the additional variables, image pixels, and Lagrangian multipliers. Difficulties lie in obtaining a nonnegative update...
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ژورنال
عنوان ژورنال: Computational and Mathematical Methods in Medicine
سال: 2016
ISSN: 1748-670X,1748-6718
DOI: 10.1155/2016/6458289