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Abstract #4154

Noninvasive assessment of great vessel stents using a susceptibility-based imaging method

Caiyun Shi1, Shi Su1, Xin Liu1, Dong Liang1, Haifeng Wang1, Jim Ji2, and Guoxi Xie3,4

1Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, shenzhen, China, 2Texas A&M University, Texas, TX, United States, 3Guangzhou Medical University, Qingyuan, China, 4Guangzhou Medical University, Guangzhou, China

Previous studies have demonstrated that a susceptibility-based positive contrast MR method exhibits excellent efficacy for visualizing MR compatible metal devices by taking advantage of their high magnetic susceptibility. However, the method was not evaluated in the assessment of stent restenosis. The purpose of this study is to assess whether the susceptibility-based positive method can be used to assess the stent restenosis, with the comparison of two typical MR positive contrast techniques, i.e., SUMO and GRASP. The experimental results showed that the susceptibility-based method not only provides better localization of the stent than SUMO and GRASP but also has capabiltiy to assess the stent restenosis.

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