Synopsis

A safe and efficient MRI test would rely on informed specification, design, implementation, assessment, and application of appropriately selected RF coils. Transmit array RF coils with multiple transmit elements provide the additional degrees of freedom that can be used to enhance field uniformity, accelerate acquisition time, enable RF shimming while intending to mitigate SAR hotspots, and increase power efficiency. Transmit array's performance can gain considerably from the parallel transmission technology when the array designs meet particular specifications, such as low coupling among individual array elements and appropriate interaction with subjects under test to provide a sufficient B₁⁺ field efficiency.