Two orthogonal loop antennas for improving the radio frequency magnetic flux for a 3 tesla magnetic resonance system

Abstract EN

This paper presents the utilization of two orthogonal loop antennas to enhance the RF magnetic flux density (B1-flux) for a 3 Tesla Magnetic Resonance Imaging (3T MRI) system.

The challenge of using a one loop antenna is the poor signal at the back of the sample to be imaged.

The proposed structure is based on two loop antennas are located at 90 degree each other which used at 125MHz.

The proposed structure shows a higher B1-flux inside a homogeneous human body phantom as compared to a one loop antenna.

By using this method, the magnetic flux density of B1-flled was enhanced by 40%, and 100% at the top and back of the dielectric human body phantom, respectively.