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Abstract #2916

A Referenceless Thermometry Using Phase Differentiation Map

Chao Zou1, Huan Shen1, 2, Yiu-Cho Chung1, Mengyue He1, Yingjiang Liu3, Bin Fu3, Yi Zhang3, Xin Liu1

1Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China; 2School of Information Engineering, Wuhan University of Technology, Wuhan, Hubei, China; 3National Engineering Research Center of Ultrasound Medicine, Chongqing, China

Referenceless thermometry has been proposed to address the accuracy problem caused by motion artifact and magnetic field drifting. The prerequisite 2D phase unwrapping precedure is computationally inefficient. We proposed a new method based on phase differentiation estimation to avoid phase unwrapping. Phantom and ex-vivo studies show that the proposed method is less sensitive to polynomial order, more computationally efficient, and its accuracy is comparable to the standard referenceless method.