Abstract #4002

Accelerated 3D free-breathing cardiac T2 mapping with tiny golden-angle hybrid trajectory and tyGRASP

Jiaojiao Hu¹, Jiantai Zhou¹, Wei Cui¹, Yang Ji², Benedictor Alexander Nguchu¹, Yanming Wang¹, Yong Zhang³, and Bensheng Qiu¹

¹Center for Biomedical Imaging, University of Science and Technology of China, Hefei, China, ²Wellcome Centre for Integrative Neuroimaging, FMRIB Division, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom, ³GE Healthcare, Shanghai, China

Synopsis

Keywords: Myocardium, HeartCardiac diseases are characterized by complex 3D pathological structures, 3D cardiac T₂ mapping can be used as a promising tool to describe different pathologies. However, 3D T₂ mapping requires a long acquisition time, which makes scanning more sensitive to motion, especially for high spatial resolution imaging. In our study, we aim to develop an accelerated and robust 3D cardiac T₂ mapping technique by combining bSSFP-based hybrid radial-cartesian sampling with tiny Golden angle RAdial Sparse Parallel (tyGRASP) MRI at 3 T. The results showed that our method can generate precise T₂ values with an average scan time of 6.1±1.0 min.

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