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Abstract #0496

dPFG MRI Assessment of Axonal Beading in an Injury Model

Michal E. Komlosh1, 2, Dan Benjamini1, 3, Matthew D. Budde4, Lynne A. Holtzclaw5, Martin J. Lizak6, Ferenc Horkay1, Uri Nevo3, Peter J. Basser1

1NICHD/PPITS/STBB, NIH, Bethesda, MD, United States; 2CNRM, USUHS, Bethesda, MD, United States; 3Department of Biomedical Engineering, The Iby and Aladar Fleischman Faculty of Engineering, Tel-Aviv University, Tel Aviv, Israel; 4Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, United States; 5NICHD/SCBS, NIH, Bethesda, MD, United States; 6NINDS/MIF, NIH, Bethesda, MD, United States

dPFG MRI was used to characterize the microstructure of an injury model using rat sciatic nerve. Three samples were used in this study, one injured nerve and two controls. A theoretical model was used to fit the resulting dPFG MRI data in order to detect alterations in tissue microstructure.

Keywords

acquiring advanced alternatively anatomical angular apparent appears array arrays aspect assessment assumes axial axis axons beaded beading beads biomedical blocks bore brain buffered capillary capped central characterize characterizing chemical close college compartment compartmental complex confocal connected consecutive consisting control course cylinders demonstrable dependence derived development diameter diffusion dimensions discrepancy double elevation engineering entire excised exhibit experiment explain extracellular fact features fiber fibers field fits fitting fixative frank free furnishes glass gradient help immediately immersed important individual induce infinite injured injury insults larger long macroscopic materials matrix mechanical medical metabolic microscopy minimal model modeled morphology natl nerve nerves nervous neurosurgery nominal nonetheless optical orientation oriented origin pack parallel perpendicular peter phantom phosphate phys placed portion potential prior process progress pulsed recently recovery reduction reflect represent resolution respectively restricted saline sample samples sciatic shape short straighten sufficient symbols system tension theoretical traumatic tubes undulation unique varied verify vertical view volume water whereas white