CT-Guided Injection

The procedure typically takes 20 to 40 minutes, depending on the complexity and number of injection sites.

Step-by-step:

1. You’ll be asked to change into a gown and remove metal items such as jewellery or belts near the scan area.

2. Your radiologist will review your previous scans, explain the procedure, discuss risks, and confirm consent.

3. You’ll be positioned on the CT table — usually lying on your front, back or side depending on the area being treated.

4. Initial CT images are taken to locate the correct injection site.

5. The skin is cleaned, and a local anaesthetic is injected to numb the surface — this may sting briefly.

6. Once numb, a longer needle is guided into place using repeated CT imaging to ensure accuracy. Occasionally, the radiologist will inject CT contrast to confirm the positioning.

7. The medication (corticosteroid mix) is injected.

8. The needle is removed, and a small dressing is applied.

You must remain very still throughout to allow accurate positioning.

• the local anaesthetic may give immediate relief — this can wear off after a few hours

• your symptoms may temporarily worsen for 24 to 48 hours — this is normal

• the steroid usually starts to work after 3 to 5 days, with maximum benefit over 1 to 2 weeks

• some people experience improvement lasting several months, while others may need further treatment

CT-guided injections are considered safe, but as with any procedure, there are small risks:

• bruising or bleeding at the injection site

• temporary numbness or weakness in the injected area

• infection (rare)

• allergic reaction to the medications (very rare)

More serious complications are uncommon. Your radiologist will discuss risks specific to your case before proceeding.

Tell us beforehand if:

• you are (or may be) pregnant

• you have allergies to local anaesthetics or steroids

• you take blood-thinning medication — you may need to pause it

• you are allergic to CT contrast agents

Your consultant will advise if you need to stop any medication beforehand (usually blood thinners or antiplatelet drugs). You can eat and drink normally unless told otherwise.

Wear loose, comfortable clothing, and avoid jewellery or metal near the scan area.

You won’t be able to drive after the procedure, or for 24 hours, due to having a local anaesthetic. So be sure to arrange for someone to pick you up and take you home.

You can usually return to light activities the same day. Avoid strenuous exercise for 24 hours unless advised otherwise.

You may take simple painkillers such as paracetamol or ibuprofen if approved by your radiologist.

Your consultant will advise whether you need a follow-up review depending on your response.

Please contact our Imaging & Diagnostics centre for pricing information.

At Welbeck, our radiologists are experts in their field and are dedicated to providing world-class care to every patient.

With access to colleagues across other specialties, our consultants are also able to refer within the Welbeck ecosystem if required to ensure you receive the treatment you need as quickly as possible, all under one roof.  

All appointments, testing, treatment, and follow-up appointments take place within our state-of-the-art facilities, enabling us to deliver accurate diagnostics and advanced treatments.

To book a CT-guided injection, you must be referred by either your GP or a specialist following a consultation with them. Self-referrals are not accepted for this treatment.

If you would like to schedule a consultation with a Welbeck specialist, please get in touch to make an appointment. Your health is important to us, so we strive to offer same-day appointments whenever possible.

Our consultants are recognised by the major health insurance companies. If you have private health insurance, your treatment at Welbeck can begin once you have obtained authorisation. We also provide care to self-paying patients. Learn more about the different payment options at Welbeck.