An ideal MRI study for early osteoarthritis should provide both structure imaging and functional imaging, which can show early morphologic degenerative changes and physiology changes of the cartilage. Most of previous dual-nuclei coils pushed the limits of non-proton nuclei sensitivity at the expense of 1H performance. To get high performance imaging for both nuclei, a novel dual-nuclei 1H/23Na coil array was developed. The bench test results show that all coils were sufficiently matched and decoupled, and the interference between sodium coils and proton coils was nearly negligible, thus can be expected to get high-resolution 1H imaging and quantitative 23Na imaging.
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