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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Magn Reson Med. 2016 Aug 8;78(1):387–398. doi: 10.1002/mrm.26339

Figure 1.

Figure 1

(a) Individualized restraining helmets with flat surface designed for the 8-channel embedded arrays. The inner surface of the helmet conforms anatomically to the 3D profile of each individual’s head. The bottom piece supports the chin of the animal while allowing the animal enough room to lick and swallow for liquid rewards. Because of the different individualized inner surfaces, each individual animal needs its own embedded array. (b) Layout of an 8-channel embedded array. (c) FR4 circuit board with the tuning/matching network and cable traps for each element in the 8-channel embedded array. (d) Picture of the coil layout with loop elements glued on the inner surface of the 3D printed helmet. (e) 8-channel embedded array loaded with a phantom and connected to the 8-channel preamplifier box.