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Abstract #1233

Scan-Rescan Reproducibility of Carotid Geometric Parameters using Bright Blood MRI at 3.0T

Yunjing Xue1, Daniel S. Hippe1, Hunter R. Underhill1, Marina S. Ferguson1, Niranjan Balu1, Rui Li2, Huijun Chen1, Li Dong3, Feiyu Li4, Gador Canton1, Chun Yuan1

1Vascular Imaging Laboratory, Radiology, University of Washington, Seattle, WA, United States; 2Center for Bio-Medical Imaging Research, Tsinghua University, Beijing, China, People's Republic of; 3Department of Radiology, Beijing Anzhen Hospital, Beijing, China, People's Republic of; 4Department of Radiology, Peking University First Hospital, Beijing, China, People's Republic of

Carotid bifurcation geometry has been identified implicated as a risk factor for the development of atherosclerotic plaque. Geometrical factors associated with flow propertiesfeatures can be assessed from 3D models derived from either bright blood or black blood MRI. Reproducibility of these geometrical parameters is important for longitudinal studies of risk assessment. While reproducibility of black-blood derived geometry has been previously reported, bright blood reproducibility is unknown. We show that geometric parameters assessed by bright blood MRI are comparable to those derived from black blood MRI.