Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.


a chemical element, atomic number 54, atomic weight 131.30, symbol Xe. (See Appendix 6.) The radioactive isotope 133Xe is used in assessment of pulmonary function, lung imaging, and cerebral blood flow studies.
xenon-133 a radioisotope of xenon having a half-life of 5.3 days and a principal gamma ray photon energy of 81 keV; used for pulmonary ventilation imaging. Symbol 133Xe.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
References in periodicals archive ?
xenon-133, an isotope of particular value for identifying nuclear
The researchers placed a cloud of xenon-133 atoms inside a magnetic trap and then jolted it with oscillating electric and magnetic fields.
Carrigan calculates that under the same weather conditions, a team monitoring a nuclear blast would have detected radioactive xenon-133 after 50 days and the lighter argon-37 after 80 days.
Because the half life of xenon-133 is 5.25 days and that of xeon-135 is 9.14 hours, criticality is very likely to have occurred just before the gases were analyzed.
radioactive xenon-133 in the northeastern part of South Korea.
South Korea's Nuclear Safety Information Center said Monday that trace amounts of radioactive xenon-133 had been detected at a detection station in Gangwon Province in the northeastern part of the country.
In South Korea, a small amount of radioactive xenon-133 has been detected
The report said extremely small amounts of iodine-131 and xenon-133, both of which are not usually found in Nevada, were detected at a monitoring station near the Atomic Testing Museum in the city following a series of radiation leaks at the Fukushima Daiichi plant.
A very small amount of the radioactive substance xenon-133 was detected in California on Friday and its origin is believed to be the crippled Fukushima Daiichi nuclear power plant in northeastern Japan, U.S.