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Abstract #1664

Quantitative evaluation of magnetic susceptibility effects in carotid artery CE-MRA with different injected flow rate of contrast medium

Liu Xiaoming1, Kong Xiangchuang1, Lei Ziqiao1, Zhang Xiaoyong2, and Liu Dingxi1
1Departments of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China, 2MR Collaborations, Siemens Healthcare Ltd, Shenzhen, China

Contrast-enhanced magnetic resonance angiography (CE-MRA) is the main modality used for assessing carotid artery stenosis in the vessel lumen, but limited to the susceptibility artifact, which would result in artifactual stenosis of artery adjacent to the subclavian vein on the injection side of contrast medium. This study aims to explore the quantitative influence of different injected flow rates of contrast medium on the susceptibility effect in the subclavian arterial image of CE-MRA on a 3T MR scanner. The result indicated that the magnetic susceptibility artifact can be reduced by improving the injection speed of contrast agent

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