Abstract #4585

Parallel transmission of cardiac imaging using statistical initial phase optimization at 5T

Jiaxu Li^1,2, Liqiang Zhou³, Bin Liu³, Nan Li^1,4, Zhenhua Shen³, Xiaoliang Zhang⁵, and Ye Li^1,4

¹Paul C. Lauterbur Imaging Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China, ²School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, China, ³Shanghai United Imaging Healthcare, Shanghai, China, ⁴Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong Province, Shenzhen, China, ⁵Department of Biomedical Engineering, State University of New York at Buffalo, Buffalo, NY, United States

Synopsis

Keywords: Parallel Transmit & Multiband, ShimsHigh-field magnetic resonance imaging is one of the main development directions of magnetic resonance cardiac imaging because of its high signal-to-noise ratio and more anatomical details. However, with the increase of field strength, the homogeneity of B1 field is a serious challenge, and parallel transmission is one of the important methods to solve this problem.In this work, we proposed a clinically applicable radiofrequency shimming method to improve the imaging quality of cardiac imaging at 5T MRI.Statistical methods were employed to find out a better initial phase of an eight-channel coil and enhance the stability of cardiac imaging.

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