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Abstract #4831

Proximal Internal Carotid Artery Stenosis Associates with Diffuse Wall Thickening in Petrous Arterial Segment of Moyamoya Disease Patients: A 3D MR Vessel Wall Imaging Study

Xiaoyi Chen1,2, Jian Wang3, Bing Zhang4, Dongye Li1,2, Huiyu Qiao2, Shuai Liu2, Yongjun Han1, Hualu Han2, Yongbo Yang3, Fei Zhou4, Xueping Li4, and Xihai Zhao2

1Center for Brain Disorders Research, Capital Medical University, Beijing, China, 2Center for Biomedical Imaging Research, Tsinghua University, Beijing, China, 3Department of Neurosurgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China, 4Department of Radiology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China

It has been shown that rapid reduction of lumen diameter at the proximal ICA can be seen in moyamoya disease (MMD) patients. The arterial wall thickness at downstream of proximal ICA may aggravate cerebral ischemia and affect the outcome of revascularization. This study sought to investigate the association between proximal ICA stenosis and diffuse wall thickening in ipsilateral petrous ICA in MMD patients. We found that proximal ICA stenosis was significantly associated with wall thickness (r = 0.434, p<0.001) and presence of diffuse wall thickening (odds ratio=4.433, 95% confidence interval 1.980–9.925, p<0.001) in ipsilateral petrous ICA in MMD patients.

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