Hyperpolarized 129Xe<unk>  magnetic resonance magnetic resonance imaging <unk>  is a medical imaging technique used to visualize the anatomy and physiology of body regions that are difficult to image with standard proton<unk> . In particular, the lung, which lacks substantial density of protons, is particularly useful to be visualized with 129Xe<unk> <unk> . This technique has promise as an early-detection technology for chronic lung diseases and imaging technique for processes and structures reliant on dissolved<unk> es. 129Xe is a stable, naturally occurring isotope of<unk>  with 26.44% isotope abundance. It is one of two Xe isotopes, along with 131Xe, that has non-zero spin, which allows for magnetic resonance. 129Xe is used for<unk>  because its large electron cloud permits hyperpolarization and a wide range of chemical shifts. The hyperpolarization creates a large signal intensity, and the wide range of chemical shifts allows for identifying when the 129Xe associates with molecules like hemoglobin. 129Xe is preferred over 131Xe for<unk>  because 129Xe has spin 1/2 (compared to 3/2 for 131Xe), a longer T1, and 3.4 times larger gyromagnetic ratio (11.78 MHz/T).
Xenon gas MRI
Carbon dioxide angiography
Neutron imaging
Photon-counting computed tomography
Multiple inert gas elimination technique
Gallium scan
Hyperoxia test
Whole-body counting