Elizaveta Motovilova1,2, Jana Vincent3, Victor Taracila3, Fraser Robb3, Ek Tsoon Tan2, James Shin1, Hollis G. Potter2, Darryl B. Sneag2, and Simone Angela Winkler1
1Radiology, Weill Cornell Medicine, New York, NY, United States, 2Radiology, Hospital for Special Surgery, New York, NY, United States, 3GE Healthcare, Aurora, OH, United States
1Radiology, Weill Cornell Medicine, New York, NY, United States, 2Radiology, Hospital for Special Surgery, New York, NY, United States, 3GE Healthcare, Aurora, OH, United States
A self-tuning radio-frequency coil using a stretchable, adaptively compensating,
interdigital capacitor was developed. We observed a <0.5% of frequency stability in silico
and in vitro without the need for retuning electronics. In vivo results were demonstrated on 3T wrist imaging.
Figure 1. (a) Conceptual drawing of the
proposed RF coil element. (b) Inductance and capacitance changes with stretch.
Figure 4. Photographs of the proposed coil in
(a) unstretched and (c) 20% stretched positions and (b), (d) the corresponding sensitivity
profiles. (e) Normalized SNR of the relaxed (blue) and 20% stretched (orange)
coil as measured transversally at the depth of 3cm inside the load. The color
bars illustrate approximate width of the relaxed (blue) and stretched (orange)
coil. (f) First in vivo MR image of a wrist made with the proposed coil.
