Kramer G H, Hauck B M, Lee T Y, Chang S Y
Human Monitoring Laboratory, Radiation Protection Bureau, Ottawa Ontario, Canada.
Health Phys. 1999 May;76(5):547-52. doi: 10.1097/00004032-199905000-00013.
The performance characteristics of sliced lung sets were compared to lung sets with activity homogeneously distributed throughout the lung tissue substitute material. The activity estimate from planar sources differs from the estimate from homogeneous sources by a factor of 0.88 to 1.09 depending on the photon energy. This error is small compared to other uncertainties commonly encountered in lung counting, i.e., activity deposition in the lung, detector placement, size difference between individuals, etc. Sliced lung sets could be used instead of homogeneous lung sets to test or provide an interim calibration for a lung counting system.
将切片肺模型的性能特征与活性在整个肺组织替代材料中均匀分布的肺模型进行了比较。根据光子能量，平面源的活度估计值与均匀源的估计值相差0.88至1.09倍。与肺计数中常见的其他不确定性相比，该误差较小，例如肺内的活性沉积、探测器放置、个体之间的尺寸差异等。切片肺模型可用于替代均匀肺模型，对肺计数系统进行测试或提供临时校准。
