Abstract #2140

A Mixed Dipole and Microstrip Transmit/Receive Array

Xinqiang Yan^1,2, John C. Gore^1,2,3, and William A. Grissom^1,2,3

¹Institute of Imaging Science, Vanderbilt University, Nashville, TN, United States, ²Radiology, Vanderbilt University, Nashville, TN, United States, ³Biomedical Engineering, Vanderbilt University, Nashville, TN, United States

Dipole and microstrip coils produce different and somewhat complementary B1 patterns and hybrid E-field distributions. Based this observation, we developed a 16-channel transmit/receive array for 7T head imaging by interleaving dipole and microstrip elements. Mutual coupling among any elements is <-14 dB without including any other decoupling. Compared with 8-channel microstrip-only and dipole-only arrays, the proposed 16-ch dipole+microstrip array has a higher SNR gain and lower g-factor. No decoupling treatment is needed for the mixed dipole and microstrip array, so it can be used as a flexible transceiver array at ultrahigh field.

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