Reference Dosimetry

Specialism: Dimensional

Skill Level: Advanced Level

Delivery Method: Blended Learning, e-Learning

Duration: e-learning ~3 days; blended ~6 days

Course Status: Available

Price: Stand-alone e-learning £250; Blended £1,525

Course description

This course has a theoretical and a practical component. The theoretical component is delivered via e-learning. It can be taken as a stand-alone course, or as a pre-requisite for the practical component as part of a blended course. The practical component is delivered face-to-face at NPL’s Teddington site.

The e-learning component consists of 8 modules. It covers:

  • Quantities, units and radiation fundamentals
  • An overview of dosimetry
  • Maintenance and general care of instruments
  • The evaluation of measurement uncertainty
  • An overview of dosimetry at a primary standard laboratory and in a clinical setting for the main radiotherapy modalities: brachytherapy, kV X-ray dosimetry, MV photon dosimetry and electron dosimetry


The blended course, in addition to the e-learning component above, offers the opportunity to apply the theory during four practical sessions at NPL’s Teddington site.

These practical sessions cover:

  • All areas of measurement, including basic metrology, estimating uncertainties and applying corrections. Dosimetry of kV X-rays, covering both in-air and in-water measurements.
  • High-energy photons (4 MV to 19 MV X-rays), incl small field.
  • Electrons (4-20MeV).
  • High-dose-rate (HDR) brachytherapy, incl a session covering check source measurements.
  • Learn from experienced NPL scientists.

Please note that the blended course has a maximum capacity of 24 learners. There is no capacity limit for the stand-alone e-learning course, which is available to start at any time.

Who is it for?

Primarily aimed at new/junior radiotherapy physicists or clinical scientists.
Also useful for more experienced personnel who wish to refresh their dosimetry knowledge.

Further Information

Certificate Type: NPL Certificate of Attendance
Available as open course: Yes
Available as in-house course: Yes

Related courses

Radionuclide Calibrator

Advanced Level

Learning outcomes

  • Develop a good fundamental, theoretical and practical understanding of all aspects of reference dosimetry for kV X-rays, photons, electrons and HDR brachytherapy sources.
  • Be familiar with the UK primary standards used in reference dosimetry.
  • Understand the current UK Codes of Practice for kV X-rays, high-energy photons and electrons, and their application.
  • Be able to carry out basic metrology in reference dosimetry, including the application of correction factors and evaluation of uncertainties.

Date(s) of next course

Date Location Delivery partner
18 June 2024 Teddington SW London NPL (Teddington)


You can purchase and register for the stand-alone e-learning course via our e-learning platform. Please click here to create an account.

To register your interest for the blended course, please complete the form below.
If you have any additional questions do not hesitate to contact us on 020 8943 6128

    Related courses

    Radionuclide Calibrator

    Advanced Level