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- W2765156222 abstract "Mathematical models are essential tools to study how the cardiovascular system maintains homeostasis. The utility of such models is limited by the accuracy of their predictions, which can be determined by uncertainty quantification (UQ). A challenge associated with the use of UQ is that many published methods assume that the underlying model is identifiable (e.g. that a one-to-one mapping exists from the parameter space to the model output). In this study we present a novel workflow to calibrate a lumped-parameter model to left ventricular pressure and volume time series data. Key steps include using (1) literature and available data to determine nominal parameter values; (2) sensitivity analysis and subset selection to determine a set of identifiable parameters; (3) optimization to find a point estimate for identifiable parameters; and (4) frequentist and Bayesian UQ calculations to assess the predictive capability of the model. Our results show that it is possible to determine 5 identifiable model parameters that can be estimated to our experimental data from three rats, and that computed UQ intervals capture the measurement and model error." @default.
- W2765156222 created "2017-11-10" @default.
- W2765156222 creator A5020541296 @default.
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- W2765156222 creator A5046970331 @default.
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- W2765156222 date "2018-10-01" @default.
- W2765156222 modified "2023-09-29" @default.
- W2765156222 title "Practical identifiability and uncertainty quantification of a pulsatile cardiovascular model" @default.
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- W2765156222 doi "https://doi.org/10.1016/j.mbs.2018.07.001" @default.
- W2765156222 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30017910" @default.
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