Weight-bearing and kinetic MRI are important for measuring tibialfemoral joint dynamics, but are difficult to carry out using rigid knee coils that are typically designed to restrict, rather than enable, flexion motion. We explored off-the-shelf components and constructed a six-channel flexible knee coil with an elastic shell to maintain critical geometric overlap between neighbor coils. The array enables MRI during knee flexion while providing similar SNR compared to a state-of-the-art rigid commercial coil. We anticipate that the coil will be useful for weight-bearing or kinetic knee imaging in which rigid coils provide suboptimal SNR and/or severely restrict the desired posture.
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