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Abstract #2356

Accelerated Model-based Proton Resonance Frequency Shift Temperature Mapping Using Echo-Based GRAPPA Reconstruction

Feiyu Chen 1 , Xinwei Shi 2 , Shuo Chen 3 , Bingyao Chen 4 , Gang Ren 4 , Xing Wei 4 , Shi Wang 3 , and Kui Ying 3

1 Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University, Beijing, China, 2 Department of Electrical Engineering, Stanford University, Stanford, CA, United States, 3 Department of Engineering Physics, Tsinghua University, Beijing, China, 4 Department of Orthopedics, First Affiliated Hospital of PLA General Hospital, Beijing, China

In this research, we proposed an acceleration method for model-based PRF temperature mapping using Echo-based GRAPPA. The method can accelerate the MR temperature monitoring at a net reduction factor of 2.3. The temperature uncertainty and temperature RMSE is less than 1.4C based on the ex-vivo goose liver experiment. This technique is also insensitive to inter-frame motion compared with other MR temperature measurement methods. When combined with other traditional methods, the combined method can measure the temperature of tissue with multiple composition.

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