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Abstract #3123

A 24-channel quadrature surface coil array for high-resolution human temporal lobe fMRI at 3T

Pu-Yeh Wu 1 , Ying-Hua Chu 1 , Shang-Yueh Tsai 2 , Wen-Jui Kuo 3 , and Fa-Hsuan Lin 1

1 Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, 2 Institute of Applied Physics, National Chengchi University, Taipei, Taiwan, 3 Institute of Neuroscience, National Yang Ming University, Taipei, Taiwan

We developed a 24-channel coil array for human brain temporal lobe imaging. Specifically, we used 12 pairs of quadrature surface coil to optimize the SNR around the auditory cortex. Compared to two overlapped circular loops, quadrature coil pair can improve the SNR by 22%. Anatomical images acquired from our array show detailed brain structure of the temporal lobe. Compared to a 32-channel head coil array, our array shows SNR advantage at region no deeper than 5 cm from the scalp. Functional MRI measurements using our array show strong hemodynamic responses at the auditory cortex elicited by music.

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