Title | Multi-channel, Stretchable, Self-Tuning Coil Array Based on Liquid Metal Technology |
Publication Type | Conference Proceedings |
Year of Conference | 2023 |
Authors | Motovilova E, Ching T, Vincent J, Tan ETsoon, Taracila V, Hashimoto M, Robb F, Sneag D, Winkler SAngela |
Conference Name | ISMRM |
Keywords | Liquid metal, RF Arrays & Systems, Stretchable RF coils |
Abstract | Stretchable receive coils can provide conformal fitting, improved SNR, and dynamic imaging capabilities. However, conductor stretching alters the resonance frequency, reducing potential SNR advantages. Previously, we proposed and demonstrated in a single element prototype a smart self-tuning coil design which allows to maintain the desired Larmor frequency with stretching. This work investigates the applicability of self-tuning techniques in a multi-channel stretchable coil array and demonstrates its performance in silico and in vitro. Simulation results show stable resonance frequency (<1%) and sensitivity (±5%) for varied load/stretching conditions. In vitro imaging demonstrates consistent performance of individual coil elements and the array (SNR=146). |