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Abstract #1858

Common-Mode Differential-Mode (CMDM) Method for Quadrature Transmit/receive Surface Coil for Ultrahigh Field MRI

Ye Li1, Yong Pang1, Xiaoliang Zhang1,2

1Department of Radiology & Biomedical Imaging, Univerisity of California San Francisco, San Francisco, CA, United States; 2UCSF/UC Berkeley Joint Graduate Group in Bioengineering, San Francisco, CA, United States

We propose a CMDM design of quadrature transmit/receive surface coil at 7T. A prototype coil was fabricated. Bench test and MR phantom experiments were carried out to evaluate the coil performance. Our results show that the common-mode and differential-mode are decoupled sufficiently at 300MHz range due to the intrinsic decoupling of the two modes. SNR improvement is achieved in the whole region of interest. The CMDM coil is feasible for parellel imaging. The proposed method is an efficient, robust and simple approach to increase the SNR of surface coils as well as surface coil elements in array coils.