Welcome to the CT Users Group web site

We are a UK based group for people with an interest in medical CT scanning. Our main aim is to share experience and knowledge relating to CT scanning with each other, as well as to provide an educational forum. We formed in 1999, and are mainly hospital physicists, but we also count radiographers and radiologists amongst our number.

Our primary interactions are via our meetings, usually held once a year. These are held in locations all round the UK and are a great way to share knowledge, research work, projects and questions in an informal setting. Our mail list aims to continue the interaction from the meetings throughout the year by bringing conversation about CT via email.

More than 200 people from all over the world are now involved with the group - if you want any more details or are interested in joining, please contact us or subscribe to the mail list.

Next CTUG meeting: Thursday 22nd October 2026 in Leicester

The twenty-eighth CTUG meeting will be held in Leicester at St Martin’s House conference centre, 15 minute’s walk from Leicester railway station and close to parking in the centre of town.

The meeting will be preceded on Wednesday 21st October by the third CTUG training course, at the same venue - see below for more information.

CTUG training course: Wednesday 21st October 2026 in Leicester

Our third one-day training course will run the day before the 2026 meeting. The course is an introduction to the physics of CT, covering a wide range of topics with Physicist and Radiographer representation. It is designed to be open to anyone, but to be particularly useful for trainee Technicians and Physicists (STP, route two etc) or those wanting a CT theory refresher. Check out the CTUG training course page for the programme.

Last CTUG meeting: 16th October 2025 in Newcastle

The most recent CTUG meeting was held in Newcastle on 16th October 2025. The programme is available on the meeting page, along with pdfs of the presentations.

Online webinar: Commissioning of photon counting CT systems, 12th June 2025

CTUG hosted a lunchtime webinar on 12th June 2025 to share experiences from three UK centres that have recently commissioned photon counting CT systems. A recording of this meeting, including the presentations is now available to view for people who missed out on the meeting at the time.

UK Paediatric CT dose survey

The IPEM paediatric optimisation working party, in collaboration with PHE, launched a UK paediatric CT dose survey in June 2019.

Further details, along with the spreadsheet for dose data entry and guidance on what information is needed can be found on the CTUG dose survey page.

Fourth UK National CT dose survey

Public Health England announced on 23rd March 2019 their next review of doses from CT examinations in the UK. This survey aims to collect protocol and patient dose index data for adult CT examinations.

Further details, along with the spreadsheet for dose data entry and guidance on what information is needed can be found on the CTUG dose survey page.

Data submission is open until the end of July 2019. If it is considered that insufficient data has been received for any examination at this time, this will be extended. It is the intention that participating centres will be (optionally) acknowledged in the final report.

Previous CTUG meetings

Click on any of the following links for more details of each meeting. More recent meetings have pdf versions of presentations that can be viewed online.