Abstract #2696

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

Guoxi Xie¹, Xiaoyong Zhang^2,3, 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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