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Planning radiotherapy for advanced cancer

The radiotherapy team plan your radiotherapy before you start treatment. This means working out the dose of radiotherapy you need and exactly where you need it.

Your planning appointment takes from 15 minutes to 2 hours.

You usually have a planning CT scan in the radiotherapy department.

The scan shows the cancer and the area around it. You might have other types of scans or x-rays to help your treatment team plan your radiotherapy. The plan they create is just for you.

Photo of a CT scanner

Your radiographers tell you what is going to happen. They help you into position on the scan couch. You might have a type of firm cushion called a vacbag to help you keep still.

The CT scanner couch is the same type of bed that you lie on for your treatment sessions. You need to lie very still. Tell your radiographers if you aren't comfortable.

Injection of dye

You might need an injection of contrast into a vein in your hand. This is a dye that helps body tissues show up more clearly on the scan.

Before you have the contrast, your radiographer asks you about any medical conditions or allergies. Some people are allergic to the contrast.

Having the scan

Once you are in position your radiographers put some markers on your skin. They move the couch up and through the scanner. They then leave the room and the scan starts.

The scan takes about 5 minutes. You won't feel anything. Your radiographers can see and hear you from the CT control area where they operate the scanner. 

Ink and tattoo marks

The radiographers make pin point sized tattoo marks on your skin. They use these marks to line you up into the same position every day. The tattoos make sure they treat exactly the same area for all of your treatments. They may also draw marks around the tattoos with a permanent ink pen, so that they are clear to see when the lights are low.

Photograph of radiotherapy tattoo marks
Radiotherapy treatment area marks.

The radiotherapy staff tell you how to look after the markings. The pen marks might start to rub off in time, but the tattoos won’t. Tell your radiographer if that happens. Don't try to redraw them yourself. 

After your planning session

You might wait a few days before you start treatment. During this time the radiographers and your doctors create your radiotherapy plan.

Last reviewed: 
18 Oct 2019
  • Guidelines for the management of oesophageal and gastric cancer. British Society of Gastroenterology (BSG), 2011.

  • Current management of oesophageal cancer
    N Rashid and others
    British Journal of Medical practicioners 2015 Volume 8, Issue 1, page 804

  • Oesophago-gastric cancer: assessment and management in adults  [NG83]
    National Institute for Health and Clinical Excellence (NICE)
    Published January 2018

  • Oesophageal cancer: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up
    F. Lordick and others
    Ann Oncol. 2016 27 Suppl 6: v50-v57

  • Oesophageal cancer
    E.C.Smith and others
    Nature Reviews Disease Primers Volume 3: 17048 (2018)

  • Oesophageal cancer
    J Lagergren and others
    The Lancet Vol 390, November 25th 2017

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