The following reports published by others were also used as sources for the current NDRLs:

Worrall, M. et al.
Analysis and results from a UK national dose audit of paediatric CT examinations.
British Journal of Radiology. 2021;95(1129)

Castellano, I.A. et al.
A prospective national survey of coronary CT angiography radiation doses in the United Kingdom.
Journal of Cardiovascular Computed Tomography. 2017;11:268-273

Iball, G.R. et al.
A national survey of computed tomography doses in hybrid PET-CT and SPECT-CT examinations in the UK.
Nuclear Medicine Communications. 2017;38(6):459-470

Loveland J., Young K.C., Oduko J.M. and Mackenzie A.
Radiation doses in the United Kingdom breast screening programmes 2016-2019.
British Journal of Radiology 2022;95:1135

Wood T.J. et al.
IPEM topical report: the first UK survey of dose indices from radiotherapy treatment planning computed tomography scans for adult patients.
Physics in Medicine and Biology 2018;63:185008