Typical value

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The median of the distribution of the data for a DRL quantity for a clinical imaging procedure. The distribution includes data from a particular healthcare facility that has several x-ray rooms (or from a small number of healthcare facilities). These data are obtained from a local survey or a review of local data. Typical values can be used as a guide to encourage further optimisation in a facility by providing a local comparator in a similar manner to local DRLs. Typical values are used when the number of x-ray rooms (or healthcare facilities) is too small to permit determination of a local DRL value. Typical values may be set for a single facility to provide a comparator linked to a new technology or technique.

(ICRP Publication 135, 2017)

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