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Abstract #2696

Real-time cardiac MR imaging based on a radial bSSFP sequence with trajectory auto-correction

Guoxi Xie1, Xiaoyong Zhang2,3, Wenlong Lv2, Caiyun Shi2, Shi Su2, Bensheng Qiu4, and Xin Liu2

1Department of Biomedical Engineering, Guangzhou Medical University, Guangzhou, China, 2Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China, 3MR Collaborations NE Asia, Siemens Healthcare, Shenzhen, China, 4Centers for Biomedical Engineering, University of Science and Technology of China, Hefei, China

Conventional cardiac cine imaging is based on ECG-triggering, which is difficult to be used in arrhythmic patients. Real-time cardiac cine technique based on radial sampling scheme is an alternative approach for imaging the arrhythmic patients. However, the technique is often hampered in trajectory error due to system gradient delay. To address this issue, a novel real-time cardiac cine technique was developed based on a radial bSSFP sequence with trajectory error auto-correction. Preliminary results demonstrated that the proposed technique can improve the image quality and has potential to be clinically useful for the arrhythmic patients.

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