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99mTc发生器淋洗效率是评价其质量的重要指标,其效率可用定量加入法、γ能谱法和屏蔽法进行测量。根据凝胶型99mTc发生器的工艺和结构特点,选用了屏蔽法。本文介绍了屏蔽法的测量原理及方法,给出了在不同条件下淋洗效率的测量结果。
The rinsing efficiency of 99mTc generator is an important index to evaluate its quality. The efficiency of 99mTc generator can be measured by quantitative addition method, gamma spectrometry and shielding method. According to the gel 99mTc generator technology and structural characteristics, the selection of the shielding method. This paper introduces the measurement principle and method of shielding method, and gives the measurement results of the rinsing efficiency under different conditions.