The purpose of this study is to evaluate the feasibility of using a new contrast kinetic model to accurately measure changes in the low permeability of the blood-brain barrier due to the subtle vascular disruption in the development of neurodegenerative diseases. Our proposed kinetic model, named extended Patlak model (EPM), includes the plasma flow from the artery to capillary bed, which allows the accurate description of intake dynamics. We hypothesize that this extension allows EPM to estimate the permeability change more accurately than the conventional Patlak model (PM) with a reduced scan-time of around 10 min.
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