reg 21D Individual justification and regular review
(1) A person carrying out an imaging practice must— (a) ensure that each individual exposure is justified; or (b) carry out regular reviews of the implementation of that imaging practice and after each review promptly provide to the Justifying Authority a written report summarising the results of that review. (2) For the purposes of this regulation an individual exposure is justified where the individual or societal benefit resulting from the exposure outweighs the health detriment that it may cause. (3) Reviews under paragraph (1)(b) must be carried out at a frequency which is appropriate having regard to the specific circumstances of the imaging practice including, but not limited to, how often the exposures take place.