A trial looking at PET scans for people having treatment for non Hodgkin lymphoma

This trial is looking at whether PET scans show doctors how well treatment is working for non Hodgkin lymphoma. You can join this trial if you are going to have chemotherapy called RCHOP21. This trial is supported by Cancer Research UK.

At the moment, doctors use CT scans before and after treatment to see if the treatment has shrunk the lymphoma, or if it has grown.

But these changes can sometimes be difficult to see. A PET scan may help with this. PET stands for 'positron emission tomography'. It is a scan that shows areas of active cancer in the body, rather than 'abnormal' areas that may be something harmless such as scar tissue.

The aim of this trial is to find out whether PET scans show doctors how well treatment is working at an earlier stage. In the future this means doctors may be able to change or stop treatment earlier if it is not working.