Skip to main content
An official website of the United States government
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

hyperpolarized xenon 129

A contrast agent composed of hyperpolarized xenon Xe 129 gas (HP129Xe), with potential usage in diagnostic nuclear magnetic resonance (NMR)-based imaging (MRI). Upon inhalation, the hyperpolarized xenon 129 gas is distributed throughout the lungs. MRI, immediately following HP129Xe administration, allows for the visualization of lung structures based on the distribution pattern of the gas. This may aid in the diagnosis of certain lung abnormalities. Hyperpolarization of Xe 129 enhances NMR signals and thus improves imaging and assessment of lung function.
Synonym:hyperpolarized Xe-129
hyperpolarized Xe129
hyperpolarized xenon-129
Abbreviation:HP 129Xe
Search NCI's Drug Dictionary