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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Standardization of 99mTc and 99Mo by the use of a 4pibeta-4pigamma counter.
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Standardization of 99mTc and 99Mo by the use of a 4pibeta-4pigamma counter.

机译：通过使用4pibeta-4pigamma计数器标准化99MTC和99Mo。

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摘要

Technetium-99m is widely used for many diagnostic investigations in nuclear medicine, thus the standardization of this nuclide is important. In classical 4pibeta-gamma coincidence counting of (99m)Tc, the steep slope of the efficiency function and the large extrapolation range may cause a large measurement uncertainty. In order to overcome these difficulties, we apply the 4pibeta+4pigamma sum counting technique for the standardization. Furthermore, we adopt both the 4pibeta-4pigamma coincidence counting method and the 4pibeta+4pigamma sum counting technique for the standardization of its parent nuclide (99)Mo. High efficiencies for both nuclides were easily achieved by the use of our 4pibeta-4pigamma counter. All the results were consistent with the reference value obtained by the conventional method obtained by NMIJ.
机译：Technetium-99M广泛用于核医学中的许多诊断研究，因此该核素的标准化很重要。 在经典的4pibeta-gamma重合计数（99m）Tc的情况下，效率功能的陡坡和大的外推范围可能导致大的测量不确定度。 为了克服这些困难，我们应用了标准化的4Pibeta + 4Pigamma总和计数技术。 此外，我们采用4pibeta-4pigamma重合计数方法和4pibeta + 4pigamma总和计数技术，用于其母体核素（99）Mo的标准化。 通过使用我们的4pibeta-4pigamma柜台容易实现两个核素的高效率。 所有结果与通过NMIJ获得的常规方法获得的参考值一致。

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