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Abstract #4119

T2* Measurements of Dissolved-Phase 129Xe in the Human Lungs at 1.5 T and 3 T

Xiaojun Xu1, General Leung1, Graham Norquay1, Helen Marshall1, Juan Parra-Robles1, Jim M. Wild1

1Academic Radiology, University of Sheffield, Sheffield, South Yorkshire, United Kingdom

129Xe gas is soluble in blood and tissue with a large observable chemical shift that can be utilized to image and quantify gas exchange in the lungs. Knowing the in vivo relaxation constants is important in determining sequence parameters for optimal dissolved phase 129Xe imaging. The measurement of the T2* of dissolved phase 129Xe in human lungs at 1.5 T and 3 T are presented.