Image reconstruction using the wavelet transform for positron emission tomography.

Y Choi; J Y Koo; N Y Lee

doi:10.1109/42.963822

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Image reconstruction using the wavelet transform for positron emission tomography.

Y Choi·J Y Koo·N Y Lee

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Abstract

We conducted positron emission tomography (PET) image reconstruction experiments using the wavelet transform. The Wavelet-Vaguelette decomposition was used as a framework from which expressions for the necessary wavelet coefficients might be derived, and then the wavelet shrinkage was applied to the wavelet coefficients for the reconstruction (WVS). The performances of WVS were evaluated and compared with those of the filtered back-projection (FBP) using software phantoms, physical phantoms, and human PET studies. The results demonstrated that WVS gave stable reconstruction over the range of shrinkage parameters and provided better noise and spatial resolution characteristics than FBP.

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Algorithms Animals Brain Fourier Analysis Haplorhini Heart Humans Image Processing, Computer-Assisted Models, Theoretical Phantoms, Imaging Tomography, Emission-Computed Comparative Study Evaluation Study Letter Research Support, Non-U.S. Gov't

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Y Choi, J Y Koo, N Y Lee. 2001. Image reconstruction using the wavelet transform for positron emission tomography.. https://doi.org/10.1109/42.963822

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