Document Detail

Photon-photon coincidences for activity determination: I-125 and other radionuclides.
MedLine Citation:
PMID:  16600603     Owner:  NLM     Status:  MEDLINE    
Theory and experiment of photon-photon coincidence counting with distance variation for activity standardisation of radionuclide solutions are described. The activity of an I-125 solution from an international comparison organised by the BIPM in 2004 was determined. The value obtained agrees with other methods within a limit of 0.2%. The extension of this activity standardisation method to other radionuclides such as Cd-109 with I-125 as a tracer nuclide, In-111, Am-241 and I-124 with a radionuclidic impurity of I-125 is studied. Achieved uncertainties of the activities of Cd-109 and In-111 are of the order of 1.5%. The activity values of sources of Am-241 are determined relative to each other. Am-241 is used for checking the measuring system and as a long-lived reference source. After decay of the order of several I-124 half-lives, sources of I-124 with I-125 are measured to determine the I-125 activity portion.
H Schrader
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Publication Detail:
Type:  Evaluation Studies; Journal Article     Date:  2006-04-05
Journal Detail:
Title:  Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine     Volume:  64     ISSN:  0969-8043     ISO Abbreviation:  Appl Radiat Isot     Publication Date:    2006 Oct-Nov
Date Detail:
Created Date:  2006-09-11     Completed Date:  2006-11-28     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9306253     Medline TA:  Appl Radiat Isot     Country:  England    
Other Details:
Languages:  eng     Pagination:  1179-85     Citation Subset:  IM    
Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany.
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MeSH Terms
Guidelines as Topic
Iodine Radioisotopes / analysis*
Radiation Monitoring / methods*,  standards*
Radioisotopes / analysis*
Reference Values
Reproducibility of Results
Sensitivity and Specificity
Reg. No./Substance:
0/Iodine Radioisotopes; 0/Radioisotopes

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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