Negligible loss in double tuning when stacking 1H to 31P dipoles in an 8-channel dipole array with 24 receivers at 7T

Abstract

We present a novel dual dipole coil concept for 7T 31P metabolic imaging in the body. We constructed an array of 8x stacked 1H/ 31P dipoles, evaluating their performance by bench measurements, EM modelling, phantom experiments and in vivo scans in human liver. Parameters such as coupling, transmission efficiency and SAR are compared to those of a whole-body 31P birdcage coil.