Xenon Xe 133 Gas
Dosage form: gas
Drug class:Diagnostic radiopharmaceuticals
Medically reviewed by Drugs.com. Last updated on Nov 22, 2021.
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Xenon Xe 133 Gas Description
Xenon Xe 133 Gas is for diagnostic inhalation use only. It is supplied in vials containing either 370 or 740 megabecquerels (10 or 20 millicuries) of Xenon Xe 133 Gas in 2 milliliters of carrier xenon and atmospheric air.
Xenon Xe 133 Gas is chemically and physiologically similar to elemental xenon, a non-radioactive gas which is physiologically inert except for anesthetic properties at high doses.
Xenon Xe 133 is produced by fission of Uranium U 235. At the time of calibration, it contains no more than 0.3% Xenon Xe 133m, no more than 1.5% Xenon Xe 131m, no more than 0.06% Krypton Kr 85 and no more than 0.01% Iodine I 131, with no less than 99.9% total radioactivity as radioxenon. Table 1 shows the effect of time on radionuclidic composition.
Table 1. Radionuclidic Composition
Percent of Total Radioactivity | |||||
Days | % Xe-133 | % Xe-133m | % Xe-131m | % Kr-85 | % I-131 |
-5 | >98.3 | <0.6 | <1.0 | <0.03 |
MEDICAL DEPARTMENTS
Cardiology
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Pre-natal Care
Ultrasound Echocardiogram
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