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Abstract #3468

Quantitative Assessment of Carotid Artery Atherosclerosis by Three-Dimensional Magnetic Resonance Imaging and 2D Ultrasound: A Comparison Study

Huiyu Qiao1, Ying Cai2, Qiang Zhang1, Lingyun Huang3, Manwei Huang4, Chun Yuan1,5, and Xihai Zhao1

1Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University, Beijing, China, 2Department of Radiology, Taizhou People's Hospital, Taizhou, China, 3Clinical Sites Research Program, Philips Research China, Shanghai, China, 4Department of Ultrasound, China Meitan General Hospital, Beijing, China, 5Department of Radiology, University of Washington, Seattle, WA, United States

The size of carotid atherosclerotic plaques is associated with ischemic cerebrovascular events. Both 3D MR vessel wall imaging and 2D ultrasound can measure carotid plaques. To improve the work flow of screening for subclinical carotid atherosclerosis, this study sought to compare the quantitative measurements of carotid plaque between 3D MR and 2D ultrasound imaging. Excellent agreement was found between MR and ultrasound imaging in measuring carotid artery maximum wall thickness. Although there was moderate to strong correlation between MR and ultrasound imaging, the plaque area measured by MR imaging was more than two folds than that measured by ultrasound imaging.

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