Utility of Bi- and Stretched-Exponential Diffusion-Weighted MR Imaging Models Using High b-Values in Assessment of Stroke

The current study demonstrated the utility of bi- and stretched-exponential diffusion models in characterize the non-Gaussian diffusion behavior in acute/subacute stroke. The preliminary results suggest that the bi- and stretched -exponential model can help better describe the complex behavior of water diffusion in acute/subacute stroke, and may provide more detailed and useful metrics for lesion assessment and prognosis.

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