The elimination of errors caused by prior technetium-99m scintigraphy on iodine-131 thyroid uptake measurements.

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dc.contributor.authorWasserman, H. J.en_ZA
dc.contributor.authorMuller, C.en_ZA
dc.contributor.authorKlopper, J. F.en_ZA
dc.date.accessioned2011-03-18T14:59:37Z
dc.date.available2011-03-18T14:59:37Z
dc.date.issued1987
dc.descriptionCITATION: Wasserman, H.J., Müller, C. & Klopper, J.F. 1983. The elimination of errors caused by prior technetium-99m scintigraphy on iodine-131 thyroid uptake measurements. S Afr Med J, 72(7):496-498.
dc.descriptionThe original publication is available at http://www.samj.org.za
dc.description.abstractCoincidence summing of technetium-99m (99mTc) pulses may disturb iodine-131 (131I) thyroid uptake measurements if these are obtained after 99mTc thyroid scintigraphy performed on the same day. The magnitude of the error was assessed in 26 patients. It was found that when pre-dose measurements were subtracted, the 6-hour and 24-hour 131I uptakes could be falsely decreased by up to 137 percentage points using a lower discriminator level of 250 keV and by up to 35 percentage points with a discriminator level of 300 keV. When pre-dose measurements from 99mTc were ignored, there was a general increase in 131I uptake values at 6 hours. Increases of up to 22 and 9 percentage points occurred when 250 keV and 300 keV lower discriminator levels respectively were used. These errors may be eliminated by performing 131I uptake measurements through a 1 mm lead filter.en_ZA
dc.description.versionPublisher’s version
dc.format.extent3 pages ; illustrations
dc.identifier.citationWasserman, H.J., Müller, C. & Klopper, J.F. 1983. The elimination of errors caused by prior technetium-99m scintigraphy on iodine-131 thyroid uptake measurements. S Afr Med J, 72(7):496-498.
dc.identifier.issn2078-5135 (online)
dc.identifier.issn0256-9574 (print)
dc.identifier.urihttp://hdl.handle.net/10019.1/7940
dc.language.isoen
dc.publisherHealth & Medical Publishing Group
dc.rights.holderSouth African Medical Journal
dc.subjectThyroid gland function testsen_ZA
dc.subjectThyroid gland -- Radiographyen_ZA
dc.titleThe elimination of errors caused by prior technetium-99m scintigraphy on iodine-131 thyroid uptake measurements.en_ZA
dc.typeArticle
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