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Abstract #0816

129Xe as an in Vivo Probe for MR Oximetry

General Leung1, Graham Norquay1, Jim M. Wild1

1Department of Cardiovascular Science, University of Sheffield, Sheffield, South Yorkshire, United Kingdom

MR oximetry with endogenous contrast can be confounded by physiological variations in the underlying signal. Exogenous agents can be useful, especially in regions such as the lungs, that suffers from low endogenous signal. This study explores the use of hyperpolarized 129Xe as an exogenous tracer of red blood cell oxygenation in human pulmonary vasculature.