PET/CT scan

Before your treatment begins, you’ll be offered a PET/CT scan. The scan helps us identify cancerous targets called tumour receptors so we can precisely plan your treatment.

What is a PET/CT Scan?

A PET/CT scan combines two imaging techniques: Positron Emission Tomography (PET) and Computerised Tomography (CT). PET produces 3-D images of your body and allows us to look at your metabolism and other important functions. We can also study any changes that are happening over time while we monitor your condition. The CT scan uses computer-processed X-ray measurements to create a detailed image.

How does it work?

Before carrying out a PET/CT scan, a ‘tracer’ (a type of radioactive substance) will be injected in to your arm, hand, or foot. The tracer spreads through the body and gives off a type of radiation that shows up on the PET scan. This allows the scanner to build up a detailed image that identifies areas of the body affected by disease, as well as some of the body’s functions.

The PET scans are combined with CT scans which adds the precision of anatomic localisation to functional imaging enabling a more accurate diagnosis. The CT scanner takes a series of cross-sectional images (‘slices’) and then computer processing is used to construct a three-dimensional image.

Using this method, we can get important information about many conditions affecting different parts of the body. The combination of scans shows the precise shape, location and size of your tumour. It helps your specialist to make an accurate diagnosis and plan the best treatment for you. The scan is safe and doesn’t hurt.

Philip's experience of a PET/CT scan

Having a PET/CT scan

A radiographer will ask you to lie on the scanner bed and make you as comfortable as possible. The scanner bed will move gently and slide you into the centre of the scanner until the part of the body to be scanned is correctly positioned. While the scan is taking place, you’ll need to remain still.

The scan takes between 20 and 45 minutes but there’s also some preparation time, so you’ll need to allow about two hours for the appointment.

The amount of radioactivity injected in the tracer is relatively small and will be excreted by your kidneys (passed when you urinate). It will not produce any side effects. You can eat, drink and travel as normal after the test. However, as a precaution, we advise our patients to avoid having close contact with young children and pregnant women for 4 – 6 hours after leaving the department.

The test is not advised if you are pregnant or are breast feeding.

Get in contact


+44 (0)1753 418 444
For more information about a private PET/CT scan at GenesiscCare please call our Windsor centre.


+44 (0)1865 237 700
For more information about a private PET/CT scan at GenesiscCare please call our Oxford centre.

Make an enquiry

Or complete the enquiry form below and we’ll come back to you – usually within 24 hours.
Enquire now

Meet our doctors

Everything we do is focused on designing better care for our patients.

With a network of 14 specialist oncology treatment centres across the UK, we provide the most up-to-date treatments and technology as standard. We attract and retain some of the most experienced doctors in the country, who all have a passion for improving patient outcomes and specialise in the treatment of different types of cancer.

Meet our doctors

Search for a centre near you

Multiple selected


Little Aston Hall Drive, Sutton Coldfield, B74 3BF

+44 (0)121 353 3055


300 Park Avenue, Aztec West, Bristol, BS32 4SY

01454 456500


Fordham Rd, Newmarket CB8 7XN, UK

+44 (0)1223 907 600


Springfield Cancer Centre, Lawn Lane, Chelmsford, CM1 7GU

+44 (0)1245 987 901

Cromwell Hospital

164-178 Cromwell Rd, Kensington, London SW5 0TU, UK

0203 848 0900


Unit 710, Centennial Park, Centennial Avenue, Elstree, Borehamwood, WD6 3SZ

+44 (0)208 236 9040


BMI St Martha Oncology Centre, 46 Harvey Road, Guildford, GU1 3LX

+44 (0)1483 806 000


17 Kings Hill Avenue, Kings Hill, West Malling, ME19 4UA

+44 (0)1732 207 000

Milton Keynes

Sunrise Parkway, Linford Wood East, Milton Keynes, MK14 6LS

+44 (0)1908 467 700


The Park Centre for oncology, Sherwood Lodge Drive, Burntstump Country Park, Nottingham, NG5 8RX

+44 (0)1158 077 400


Peters Way, Sandy Lane West, Oxford, OX4 6LB

+44 (0)1865 237 700


Bartons Road, Havant, PO9 5NA

+44 (0)23 9248 4992


Spire Hospital, Chalybeate Close, Southampton, SO16 6UY

+44 (0)381 277 900


69 Alma Road, Windsor, SL4 3HD

+44 (0)1753 418 444