Numerical results for iterative image reconstruction in half-scan and non-uniform attenuated SPECT
Abstract
and numerical research has been developed on image reconstruction from data acquired over π in SPECT with non-uniform attenuation. However, it remains theoretically unknown whether data, acquired only over π in SPECT with nonuniform attenuation, contain complete information for accurate image reconstruction.
In this work, we present numerical results on image reconstruction in halfscan SPECT with non-uniform attenuation. The numerical simulations are based on a new iterative reconstruction algorithm that introduces exact and implicit attenuation
correction. Specifically, we show that the algorithm is able to reconstruct images, in half-scan SPECT, with quality very similar to those reconstructed in full-scan SPECT. Moreover, the numerical simulations show that the algorithm is stable and convergent.
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