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Wu, C. (author), Van der Have, F. (author), Vastenhouw, B. (author), Dierckx, R.A.J.O. (author), Paans, A.M.J. (author), Beekman, F.J. (author)Purpose: In pinhole SPECT, attenuation of the photon flux on trajectories between source and pinholes affects quantitative accuracy of reconstructed images. Previously we introduced iterative methods that compensate for image degrading effects of detector and pinhole blurring, pinhole sensitivity and scatter for multi-pinhole SPECT. The aim of...journal article 2010
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Wu, C. (author), Vastenhouw, B. (author), Van der Have, F. (author), Dierckx, R.A. (author), Beekman, F.J. (author)SPECT imaging with low dose or short acquisition time can lead to very noisy reconstructed images. With the USPECT-II system we study the effect of low-count scans, and 3D Gaussian blurring to suppress statistical errors. Three different groups of short-time cardiac rat scans were derived from a longtime scan. Images were reconstructed and then...conference paper 2008