It is important to have some standardisation of patient size if the number of patients for whom dose survey data are collected is limited. Standardisation of patient size is usually accomplished through weight restriction. The mean weight chosen should be close to the average weight in the population being considered. A mean weight of 70 ± 10 kg may be appropriate for some countries. For adults this is achieved typically by using data from patients with weights within a certain range (e.g. a range of 50–90 kg can be used to achieve a 70-kg mean). The standard-sized patient varies with region and should be taken into account when making comparisons of dose survey results.
(ICRP Publication 135, 2017)
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