Dual resonant RF coil for 1.5T and 3T MRI systems employing FPCB etched sub-legs

Radio frequency coil is the core component used in the detection of nuclear magnetic resonance signal. Usually the radio frequency coil is designed for operation on a specific magnetic field strength based magnetic resonance imaging system. This paper describes the method of implementing a modified birdcage type receive only radio frequency coil which has the ability to detect the nuclear magnetic resonance signal of ¹H nuclei at 64 MHz and 128 MHz resonance frequency for 1.5T and 3T magnetic resonance imaging systems respectively. This dual resonance is achieved by dividing each coil leg into pair of sub-legs. This radio frequency coil is designed to perform the whole body nuclear magnetic resonance imaging of small animal. The coil performance has been verified via simulation and electrical parameter measurements.