A Mixed Dipole and Microstrip Transmit/Receive Array
Xinqiang Yan1,2, John C. Gore1,2,3, and William A. Grissom1,2,3
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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