Xiaojun Xu1, Graham Norquay1, Steven R. Parnell1, Martin H. Deppe1, Salma Ajraoui1, Ralph Hashoian2, Helen Marshall1, Paul Griffiths1, Juan Parra-Robles1, J
1Academic Radiology, University of Sheffield, Sheffield, South Yorkshire, United Kingdom; 2Clinical MR Solutions, United States
In this study, the SNR of hyperpolarised 129Xe human lung MRI was compared at 1.5 T and 3 T. Experiments were performed at both B0 fields with quadrature double Helmholtz transmit-receive chest coils of the same geometry. Differences in sensitivity between the two RF receiver systems and body coils that are due to factors not directly related to field strength were assessed and normalised by using a thermally-polarised 129Xe phantom. There were no significant differences observed in image SNR of 129Xe ventilation lung images obtained at the two field strengths.