Transcranial magnetic resonance guided focused ultrasound (MRgFUS) has shown dramatic success in the treatment of various neurodegenerative diseases. However,black band artifacts arise in MR images due to the high-permittivity water bath and the metallically lined helmet-shaped transducer together with the vendor-installedbody coil. In this work, we present electromagnetic simulations of a very thin, flexible, and acoustic transparent head coil design (FUS-Flex). Simulations show a signal-to-noise-ratio (SNR) increase of 3.5× and 5× compared to a body coil with and without the transducer, respectively, and an attenuation of the black band artifact in theregions of interest.