We recently proposed a self-tuning stretchable receive coil concept in a single element. Here, we expand the technique to a multi-element array and compare 3 fabrication techniques: 1) single layer, 2) double layer, 3) direct ink writing (DIW). Numerical simulations are used to find the critical overlap for decoupling. In vitro experiments demonstrate almost identical sensitivity between the 3 techniques and between coil elements. DIW is most suitable due to its mechanical stability and thinner/less MR-visible coil elements with a frequency stability of 128+/-0.6 MHz (0 to 30% of stretch) and an SNR improvement of 50% over a commercial coil.
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