Study of the purity of /sub 99m/Tc sublimed from fission $sup 99$Mo and the radiation dose from the impurities
The principal radionuclidic impurities in /sup 99m/Tc sublimed from fission molybdenum product have been measured. The radioactive impurities were measured by gamma -ray spectrometric analysis using Ge(Li) solid state detectors. Calculations showed that the activities due to these impurities is very low when compared with the activity of the technetium. /sup 131/I was found to be the principal source of extraneous activity. The other impurities were: /sup 99/Mo, /sup 103/Ru, /sup 106/Ru and /sup 132/Te. The contribution due to these impurit ies to the total absorbed dose is significant. The extra dose to the patient from the impurities in typical runs from one generator was calculated to be 0.17% for the first sublimation, and 0.11 and 0.0013% for the second and third sublimations, respectively, of the dose from the /sup 99m/Tc administered. (auth)
- Research Organization:
- Veterans Administration Hospital, Hines, IL
- NSA Number:
- NSA-29-025876
- OSTI ID:
- 4344316
- Journal Information:
- Int. J. Appl. Radiat. Isotop., v. 25, no. 1, pp. 35-41, Other Information: Orig. Receipt Date: 30-JUN-74; Bib. Info. Source: UK (United Kingdom (sent to DOE from))
- Country of Publication:
- United Kingdom
- Language:
- English
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