Figure 3
From: A flexible MRI coil based on a cable conductor and applied to knee imaging
Reflection coefficient (S11) as a function of geometry for a cable coil (top) and coaxial coil (bottom). The loops were tuned with circular geometry and wrapped onto a 13.5-cm cylindrical dielectric phantom. The loops were then elongated into ellipses with major (minor) axes of 13-cm (8-cm) and 15-cm (6-cm) without retuning. Scaled representations of the coil contours are overlaid.
