Yunsuo Duan1, Jiacheng Wang2, Feng Liu1, Rachel Marsh1, and Thomas J. Vaughan3
1MR Research, Department of Psychiatry, NYSPI and Columbia University, New York, NY, United States, 2Department of Electrical Engineering, New York University, New York, NY, United States, 3ZMBBI, Columbia University, New York, NY, United States
1MR Research, Department of Psychiatry, NYSPI and Columbia University, New York, NY, United States, 2Department of Electrical Engineering, New York University, New York, NY, United States, 3ZMBBI, Columbia University, New York, NY, United States
we presented a novel partially flexible
32-ch coil array to address the difficulty in close fitting for various human
head sizes. The coil array worked
well within size range of 180mm
x 220mm to 220mm x 260mm, which fits for almost all human subjects, while maintaining
desirable comfort.
Figure 1. (a) 3D design of the coil former. The upper part (top) is detachable from the lower part for size adjustment. The Top and base are 3D printed using rigid PLA filaments. The sidewalls are 3D-printed using semi-flexible filaments TPU so the sidewalls can be pulled inwards-outwards to shrink/extend the size of the coil. (b) Schematic circuit design of individual coil loop. Ct=15-40pF, Cm=33pF, Cd=24pF, Cc=8.2pF.
Figure 2. (a) The coil adjusted to 180mmx 220mm and loaded with a sphere phantom in a diameter of 180mm; (b) The coil adjusted to 220mm x 260mm and loaded with the same phantom. (c) A axial-plane image acquired with coil setting (a); (c) A axial-plane image acquired with coil setting (b); (e) SNR distributions along the horizontal center line of image (c) (red) and image (d) (blue).