A Novel Wearable RF Head Coil for High Resolution 7T Magnetic Resonance Imaging

In this paper, a new structure of 7T magnetic resonance imaging RF coil has been designed and presented. The flexibility of this coil distinguishes it from others traditional coils. The mentioned array coil consists of 8-channels, each made of two antenna elements. The results show that using compressed elements in designing this coil provides a desired recursive factor (isolation better than 35dB), while coupling is kept less than 60dB between non-adjacent elements. In this report, the structure coupling effects include mutual effects of coil elements, resources, and phantom. The obtained results of the magnetic field homogeneity, bandwidth, and specific absorption rate are also evaluated. The results show that the bandwidth, the SAR for the 1w input power, and the $B_{1}^{-}$ homogeneity distribution are 1.1%, 0.07969W/kg, and 84%, respectively. To present this coil for a brain imaging, elements miniaturization is done where the elements size has been decreased in design.