Reduction of noise amplification in SPECT using smaller detector bin size

  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},
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
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