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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: NMR Biomed. 2013 May 22;26(11):1395–1402. doi: 10.1002/nbm.2965

Figure 4.

Figure 4

(a) Inner surface of helmet showing each element of the embedded 4-channel array. (b) External part of the coil containing the printed circuit board with the matching networks. (c) 4-channel embedded array connected to the low input impedance preamplifiers. For performance evaluation, the embedded 4-channel array was compared to two circular surface coils externally positioned in circular grooves at the helmet top (d), and to a single elliptical surface coil covering the whole marmoset head (e).