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Dosages and use of different nuclides in diagnostic nuclear medicine imaging

Doseringen en nuclidengebruik bij nucleair diagnostisch onderzoek : Inventarisatie gegevens 2008


The dosages used by Dutch hospitals in diagnostic nuclear medicine imaging procedures are generally in line with the recommendations of the Dutch Society of Nuclear Medicine (NVNG). The dosages used for cardiac function imaging are slightly above the recommended levels, while those used in positron emission tomography (PET) are, on average, 40% below those recommended. The amount of radioactive substance administered for a single examination is less in the Netherlands than in Germany and the USA and slightly higher than in the UK. These are the main results of the Diagnostic Imaging Survey for 2008. This survey is conducted annually, and the 2008 edition is the first to be extended with questions on dosages and nuclides used in nuclear medicine. These data, together with the known frequencies of the various diagnostic imaging procedures, provide a more precise understanding of the radiation dose administered to patients undergoing a nuclear medicine examination. For 2008, the calculated dose is 0.095 millisievert per capita, which is 12% higher than that calculated using the data available from previous annual surveys. The radiation dose from nuclear medicine contributes nearly 12% of the total dose from all medical diagnostic imaging modalities. In 2008, one hospital partly switched to using the nuclide thallium-201 due to delivery problems with technetium-99m. The substitution of thallium-201 for technetium-99m results in the patient being exposed to a significantly higher radiation dose. The supply problems resulted from the temporary closure of the reactor in Petten, one of the main suppliers of technetium-99m in the world. The extent to which other hospitals were affected by this closure is not clear from the survey.

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