γ计数器的质量控制。I. 误差来源的实验评估。

Ann Clin Lab Sci. 1977 Jan-Feb;7(1):57-67.

Errors of counting rate as large as 2 percent may occur through variations in instrumental parameters during the measurement of I-125 activity using a gamma counter. Much larger errors result from failure to maintain constant sample geometry; in particular, the slope of calibration curves depends on sample volume.

使用伽马计数器测量碘-125活度时，由于测量过程中仪器参数的变化，计数率误差可能高达2%。未能保持样品几何形状恒定会导致大得多的误差；特别是，校准曲线的斜率取决于样品体积。