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Model-based estimation for dynamic cardiac studies using ECT Ping-Chun Chiao; Rogers, W.L.; Clinthorne, N.H.; Fessler, J.A.; Hero, A.O. Medical Imaging, IEEE Transactions on Volume 13, Issue 2, Jun 1994 Page(s):217 - 226 Digital Object Identifier 10.1109/42.293914 Summary:The authors develop a strategy for joint estimation of physiological parameters and myocardial boundaries using ECT (emission computed tomography). They construct an observation model to relate parameters of interest to the projection data and to account for limited ECT system resolution and measurement noise. The authors then use a maximum likelihood (ML) estimator to jointly estimate all the parameters directly from the projection data without reconstruction of intermediate images. They also simulate myocardial perfusion studies based on a simplified heart model to evaluate the performance of the model-based joint ML estimator and compare this performance to the Cramer-Rao lower bound. Finally, the authors discuss model assumptions and potential uses of the joint estimation strategy » View citation and abstract



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