Design of Rotated Surface Coil Array for Multiple-Subject Imaging at 400 MHz

Multiple-subject magnetic resonance imaging (MRI) has been used in phenotyping studies to reduce the total experimental time by simultaneously capturing images of multiple animals using single or radio frequency (RF) coils. However, conventional methods must consider decoupling circuits minimize mutual inductance coupling between RF These unnecessarily increase field view (FOV) and image acquisition times. In this study, we propose a rotated surface (RS) coil that can generate uniformly transmitted (|B1+|) distance coils when for multiple-animal without circuits. The RS was designed electromagnetic (EM) simulation software, rotation angle, which creates uniform |B1+|-component, derived mathematical calculations. We compared |B1+|-component uniformity produced with different angles 4-leg high-pass filter birdcage (HBC) multiple-coil arrays at same location EM simulations. displayed greater than 94% 84% as single-channel array central axial plane, respectively. Following simulations, multiple-mice manufactured, bench test performed ensure its operation 400 MHz analysis. T1-FLASH four phantoms mice were acquired 9.4-T pre-clinical MR system. signal-to-noise ratio (S/N) measured phantom images.