MR scanner independent 3D B₁ field mapping of magnetic resonance spectroscopy RF coils using an automated measurement system

Abstract:

We developed a method for measurement of the B₁^+/- fields as an alternative approach to B₁^+/- fields assessment in MR scanner. Our setup incorporates an industrial coordinate table controlled by a PC-based program, search coils, a two--port vector network analyzer and an analog-to-digital (A/D) card. It is possible to measure in various liquid media (for example in saline solution) to mimic different shapes and dielectric properties of the human body.