Reduction of noise amplification in SPECT using smaller detector bin size

@article{Hwang2004ReductionON,
title={Reduction of noise amplification in SPECT using smaller detector bin size},
author={DoSik Hwang and G L Zeng},
journal={IEEE Transactions on Nuclear Science},
year={2004},
volume={52},
pages={1417-1427}
}

Published 2004 in IEEE Transactions on Nuclear Science

In SPECT iterative reconstruction methods, such as the ML-EM (Maximum Likelihood Expectation Maximization) algorithm, the noise propagation from the projection measurements into the reconstructed image has been a difficult problem to control as the algorithm iterates. In this paper, we show that the noise amplification at high number of iterations can be reduced by using a detector whose bin size is smaller than the image pixel size without applying any regularization methods or changing any… CONTINUE READING