Abstract #3338

RF shielding designs for birdcage coils for high-resolution animal fMRI at 9.4T

Zhangyan Yang^1,2, Ming Lu³, Gary Drake^2,4, Feng Wang^2,4, Pai-Feng Yang^2,4, Li Min Chen^2,4, John C. Gore^1,2,4,5,6, and Xinqiang Yan^2,4

¹Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, United States, ²Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN, United States, ³College of Nuclear Equipment and Nuclear Engineering, Yantai University, Shandong, China, ⁴Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, United States, ⁵Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, United States, ⁶Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, United States

Synopsis

RF shields are key components of volume coils, but they may cause imaging distortions and the significant heating. The effects of different shielding strategies were evaluated for a birdcage coil used to image animals at 9.4T. Three shields with various thicknesses and two shields with different slot patterns were comparatively investigated ed in terms of performance and temperature rise during fMRI acquisitions.

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