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Diagnostic Reference Level (DRL) Software and RPC Newsletters

DRL Software

This software is designed to allow the user to set and monitor local Diagnostic Reference Levels in accordance with IPEM Document 88 (Guidance on the Establishment and use of Diagnostic Reference Levels for Medical X-ray Examinations, 2004). The user can select from three modalities; general radiography, fluoroscopy, and multi-detector CT. The method involves taking the mean of an initial sample of dose-area product (DAP) or dose-length product (DLP) values from a range of examinations on average-sized patients as the local Diagnostic Reference Level (LDRL). The software then automatically sets local DRLs and an investigation level against which the results of future dose audits are assessed.

Click on the Excel logo to download the latest version of the DRL software.

The links to the documents below require a PDF reader to view them.
Click on the Adobe logo to download the latest version.

RPC Newsletters



2020 Autumn - Winter Issue

2020 Spring - Summer Issue

2019 Spring - Summer Issue

2018 Summer Issue

2016 Summer Issue

2015 Autumn Issue


Please print newsletters to view pages in the correct order.




Guidelines on the X-ray Imaging of Children

An illustrated reference guide to aid radiologists, radiographers, physicists and those in training in the optimisation of paediatric X-ray Imaging in terms of quality and dose.

This A4 practical book (56) pages includes the following for 17 of the most common radiographic and fluoroscopic examinations in 4 main age ranges.


  • Referral criteria

  • Image criteria

  • Recommendations on good technique with representative examples

  • 40 high quality radiographs and 20 colour photographs, illustrating optimal positioning

  • Radiation protection and equipment modification

  • Tables of;

Exposure factors

Dose area product measurements

Entrance surface doses

Effective doses

  • Audit and image quality assessment forms

Although published in 1999 this publication is still a valuable and useful source of information.

   Click on the Word logo to
   download an order form.

Clark's Positioning in Radiography 13E

A. Stewart Whitley, Gail Jefferson, Ken Holmes, Charles Sloane, Craig Anderson, Graham Hoadley


  • Includes new and updated sections on recommended diagnostic reference levels, bariatric radiography, tomosynthesis and paediatrics updates

  • Covers digital imaging technology as well as its various clinical applications

  • Provides useful guidance on positioning errors and how to avoid mistakes

  • Includes up-to-date standard radiation protection measures and guidance on specific examination radiation dose reference levels

  • Presents more anatomical drawings to aid understanding of radiographic anatomy


First published in 1939, Clark's Positioning in Radiography is the preeminent text on positioning technique for diagnostic radiographers.

Whilst retaining the clear and easy-to-follow structure of the previous edition, the thirteenth edition includes a number of changes and innovations in radiographic anatomy.

Clark's Positioning in Radiography continues to be the definitive work on radiographic technique for all students on radiography courses, radiographers in practice and trainee radiologists.



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