Change of https://www.gov.uk/government/publications/diagnostic-radiology-national-diagnostic-reference-levels-ndrls

Change description : 2025-07-08 09:30:00: NDRLs for general radiography, and fluoroscopy and interventional radiography have been updated. [Guidance and regulation]

Showing diff : 2024-11-20 09:14:53.473730360 +00:00..2025-08-07 22:47:44.645303466 +00:00

Guidance

Diagnostic radiology: national diagnostic reference levels

Details of the national diagnostic reference levels (NDRLs), for clinicians using radiation in medicine.

From:
UK Health Security Agency
Published
22 January 2016
Last updated
208 NovemberJuly 20242025 — See all updates

Documents

National Diagnostic Reference Levels (NDRLs) from 208 NovemberJuly 20242025

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National Diagnostic Reference Levels (NDRLs): process to generate, adopt and maintain

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Details

These tables give the national diagnostic reference levels for common X-ray examinations for patients.

NDRLs from previous years are also available:

Updates to this page

Published 22 January 2016
Last updated 208 NovemberJuly 2024 + show2025 href="#full-history">+ show all updates

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Update history

2025-07-08 09:30
NDRLs for general radiography, and fluoroscopy and interventional radiography have been updated.

2024-11-20 09:14
Added ‘National Diagnostic Reference Levels (NDRLs) from 20 November 2024’.

2022-11-24 13:11
Added process to generate, adopt and maintain NDRLs.

2022-10-13 16:14
Updated with latest mammography and adult CT NDRLs. Year of publication also added to each NDRL value.

2022-06-14 16:58
Updated with latest update, including change to ‘2b. Paediatric CT examinations’.