A study to find out more about using the MR-Linac for cancer (MOMENTUM)

Cancer type:

All cancer types





Doctors use the MR-Linac as a scanner and as a treatment machine for cancer. This study is open to people with any type of cancer.

More about this trial

The MR-Linac is a machine that combines an MRI scan with a linear accelerator Open a glossary item (Linac) radiotherapy treatment machine. 

Cancers can change shape or move during treatment. This is particularly in parts of the body that move when you breathe or digest food. The MR-Linac may offer an advantage over standard radiotherapy. This is because the cancer specialist can see the cancer in real time during treatment.

In this study the team want to collect information about how the MR-Linac is used. They will look at its use and how you are doing after treatment. They do this by looking at your medical records Open a glossary item.  You also have the choice to complete questionnaires.

The aim of this study is to create a registry of the use of the MR-Linac so they can improve it. The researchers hope that it will help with research. And that it will improve treatment for people in the future.

Please note this study will not affect any treatment you have nor will you gain any benefit.  

Who can enter

The following bullet points are a summary of the entry conditions for this study. Talk to your doctor or the study team if you are unsure about any of these. They will be able to advise you. 

Who can take part

You may be able to join this study if you are at least 16 years old and:

  • are going to have a scan or treatment using the MR-Linac


  • have had a scan or treatment using the MR-Linac

Who can’t take part

You cannot join this study if you are not able to have an MRI scan. This could be because you:

  • are pregnant
  • are not able to be in small places (claustrophobia)
  • have metal in your body such as surgical clips
  • have an electronic device in your body such as a pacemaker

Trial design

This is an observation study. It is an international study. The team need 6,000 people worldwide to join with 800 people from the UK.

The team will look at your medical records to find out information about:

  • your treatment using the MR-Linac
  • your scan using the MR-Linac
  • your health and clinic appointments after your scan or treatment
  • personal information such as your age

All the information the team collect is confidential and anonymous.

Hospital visits

There are no extra hospital visits if you join the study.

Side effects

There are no side effects. 

We have information about having radiotherapy and an MRI scan. 



Recruitment start:

Recruitment end:

How to join a clinical trial

Please note: In order to join a trial you will need to discuss it with your doctor, unless otherwise specified.

Please note - unless we state otherwise in the summary, you need to talk to your doctor about joining a trial.

Chief Investigator

Professor Ananya Choudhury

Supported by

The Christie NHS Foundation Trust

If you have questions about the trial please contact our cancer information nurses

Freephone 0808 800 4040

Last review date

CRUK internal database number:


Please note - unless we state otherwise in the summary, you need to talk to your doctor about joining a trial.

Last reviewed:

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