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Schematic representation of the application of the optimization principle in an iterative approach. In (A), a baseline, with a majority of individuals with exposure below the exposure benchmark (dotted line). In (B), exposure optimization reduces the number of individuals above the benchmark, allowing for a third step (C) to lower the exposure benchmark. This situation then becomes the new starting situation (A). Based on PHE (2019) and ICRP (2020).
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