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Comparison of Tc-99m measurements in UK hospitals, 2006.

MacMahon, D; Townley, J; Bakhshandeiar, E; Harms, A V (2007) Comparison of Tc-99m measurements in UK hospitals, 2006. NPL Report. DQL-RN 018

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To assess the current accuracy of clinical measurements of the activity of 99Tcm, a comparison has been conducted between measurements at the National Physical Laboratory (NPL) and measurements made within the United Kingdom hospital physics community. Measurements were carried out within the period 3rd – 19th October and on 4th December 2006. The October sources were measured at NPL before distribution. The December source was measured at NPL after the hospital measurements.
Two hundred and eleven results were reported for this comparison from forty-eight participating hospitals, or groups of hospitals. Of these results 96% were within 5% of the NPL value. Only one measurement deviated by more than 10% from the NPL value. The standard deviation of all the results relative to the NPL value was 2.4%. All October results are for 10R Schott vials containing approximately 4 ml of solution; the December results were for a P6 vial containing 3.9 ml of solution.
The results of this comparison are encouraging, indicating that the accuracy of hospital measurements of 99Tcm, in the large majority of cases, is now better than 5%.

Item Type: Report/Guide (NPL Report)
NPL Report No.: DQL-RN 018
Subjects: Ionising Radiation
Ionising Radiation > Radioactivity
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/3761

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