Edward S. Hui1,
2, Jens H. Jensen1, 2, Xingju Nie1,
2, Ali Tabesh1, 2, Maria F. Falangola1,
2, Joseph A. Helpern1, 2, DeAnna L. Adkins3
1Center
for Biomedical Imaging, Medical University of South Carolina, Charleston, SC,
United States; 2Dept of Radiology and Radiological Science,
Medical University of South Carolina, Charleston, SC, United States; 3Dept
of Neuroscience, Medical University of South Carolina, Charleston, SC, United
States
Diffusional kurtosis imaging (DKI) has been demonstrated to be a promising tool for ischemic stroke assessment. Diffusional kurtosis of ischemic tissue has been shown in prior studies to remain elevated during subacute ischemia, amid pseudonormalization of diffusivity. However, these bulk diffusion metrics lack information on specific microstructural properties such as the sizes, orientations, volume fractions, and diffusivities of prescribed cellular compartments. In this work, we employ a new tissue model, termed cerebral microenvironment modeling (CMM), which generalizes a previously proposed method so that specific microstructural properties of cortical infarction may be obtained with DKI.
Keywords