Materials for printed MRI surface coils: towards better image quality and coil flexibility

Despite offering a unique practical advantage, printed flexible MRI surface coils still trail conventional ones when compared head-to-head. Here, we investigate how to improve printed coils by varying the materials used for their fabrication. Two silver inks are compared in terms of resistivity and AC resistance, and those properties are then linked to the imaging quality of resulting coils. The choice of substrate is also studied to enhance the coils flexibility while retaining good electrical properties. The results show promise for bringing printed coils to the standards of conventional ones

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