Abstract #2099

A Hybrid Model Integrated with Correction of Susceptibility Induced Phase Error in Magnetic Resonance Thermometry

Kexin Deng¹, Yuxin Zhang¹, Yu Wang¹, Bingyao Chen², Xing Wei², Jiafei Yang², Shi Wang³, and Kui Ying³

¹Biomedical Engineering, Tsinghua University, Beijing, China, People's Republic of, ²Department of Orthopedics, First Affiliated Hospital of PLA General Hospital, Beijing, China, People's Republic of, ³Key Laboratory of Particle and Radiation Imaging, Ministry of Education, Department of Engineering Physics, Tsinghua University, Beijing, China, People's Republic of

The temperature dependency of susceptibility, especially for fat, could introduce errors in temperature estimation. To address this problem, a hybrid model integrated with susceptibility change induced phase is proposed to reduce the phase error. Simulation was conducted to validate the proposed model and a water-fat phantom was made and heated to illustrate the effect of susceptibility-induced phase error correction. The proposed model shows more accurate temperature estimation near the water-fat interface both in simulation and phantom heating experiment.

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