Abstract #3659

Positive visualization of MR compatible nitinol stent using a susceptibility-based imaging method

Caiyun Shi¹, Xiaoyong Zhang^1,2, Shi Su¹, Hairong Zheng¹, Xin Liu¹, Guoxi Xie^1,3, and Jim Ji⁴

¹Shenzhen Key Laboratory for MRI, Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, People's Republic of China, ²Centers for Biomedical Engineering, College of Information Science and Technology, University of Science and Technology of China, Hefei, People's Republic of China, ³Beijing Center for Mathematics and Information Interdisciplinary Sciences, Beijing, People's Republic of China, ⁴Department of Electrical and Computer Engineering, Texas A&M University, TX, United States

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 visualization of stents. Therefore, the purpose of this study is to assess whether the susceptibility-based positive method can be used to visualize the nitinol stents, with the comparison of two typical MR positive contrast techniques, i.e., SUMO and GRASP. Experiment results showed that the susceptibility-based method provides much better visualization and localization of the stent than SUMO and GRASP.

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