Calibration of Phototherapy Equipment: Guy's and St. Thomas' Medical Physics UV calibration service

The Non-ionising Radiation Section (Medical Physics Department at Guy's & St Thomas' Foundation Trust) work closely with the Phototherapy Support Network to provide accurate and reliable UV meter calibrations and measurements needed to provide the highest quality phototherapy services.

These medical physics services are already extended to many centres in the form of regular (twice yearly) visits to check the output of cabins and annual meter calibration checks.

The physics group have built-up considerable expertise in these areas and in the safety issues around provision of phototherapy services, and are always happy to provide advice and measurements to other centres through the Phototherapy Support Network. Please feel free to download the following guidelines:-

Attached file:

British Photodermatology Group Guidelines for dosimetry and callibration in ultraviolet radiation therapy (2002)
(PDF format, 136kb)

To find out how we can support your centre, please contact:

Trish Garibaldinos ( or the Head of the Non-ionising Radiation Section, Dr Andy Coleman (Tel. 020 7188 3811 e-mail:

Update meeting 21st June 15:00-17:00
Update Meeting at Burrell Street Clinic Auditorium on Thursday 21st June, 3pm. Please email Nichola Mair at if you wish to attend. There will be a Steering Group Meeting immediately prior to the update

Letter re Update 21st June 2018 (Word format, 40kb)

Posted on: 8-May-2018

2 Day Phototherapy training course on Dosimetry & Clinical Practice
Our annual 2 day Phototherapy course will take place at Robens Suite, Guy's Hospital on the 10th and 11th October 2018. The cost will be £450. If you wish to attend, please email .
Posted on: 7-Jan-2018

This network is specifically for Phototherapy practitioners. Unfortunately, we are unable to answer enquiries from patients.