Standardizing 125I Sources and Determining 125I Counting Efficiencies of Well-Type Gamma Counting Systems

[摘要] I describe the technique for determining the absolute decay rate of any 125I source. The problems of varying counting efficiency, varying sample geometry, and extended sources are discussed. By using the calibrated 125I source, the counting efficiency of the given counting system was obtained.

[学科分类] 过敏症与临床免疫学