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- W1567649207 abstract "In this paper we propose an image reconstruction procedure which aims to unify gated SPECT and dynamic SPECT into a single method. We will divide the cardiac cycle into a number of gate intervals as in gated SPECT, but treat the tracer distribution for each gate as a time-varying signal. By using dynamic expectation maximization and motion-compensated temporal regularization, our reconstruction procedure will produce an image sequence that shows both cardiac motion and time-varying tracer distribution simultaneously. To demonstrate the proposed reconstruction methods, we simulated gated cardiac perfusion imaging using the gated mathematical cardiac-torso (gMCAT) phantom with Tc99m-Teboroxime dynamics. Our preliminary results show that the proposed methods can produce more accurate reconstruction of gated dynamic images than independent reconstruction of individual gate frames with spatial smoothness alone." @default.
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- W1567649207 date "2006-03-21" @default.
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- W1567649207 title "Reconstruction of Dynamic Gated Cardiac SPECT" @default.
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- W1567649207 doi "https://doi.org/10.1109/nssmic.2005.1596803" @default.
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