CT guidance provides cross-sectional views of bone, nerves, soft tissues and the planned needle pathway for selected spinal procedures.
What is a CT-guided spine injection?
A CT-guided spine injection uses computed tomography to plan and monitor a needle as it is advanced to a selected back pain or spinal injury target. Depending on the referral and imaging findings, the target may include a facet joint, nerve-root sleeve, epidural space, sacroiliac joint or another defined structure.
Why CT may be chosen
- CT shows bone in high detail and provides cross-sectional anatomical information.
- It can demonstrate deep targets that are partly hidden by bone or difficult to see with ultrasound.
- It allows the radiologist to plan around nearby nerves, vessels, lung, bowel and postoperative anatomy.
- Small amounts of iodinated contrast may be used to confirm needle position or the pattern of spread.
Why the diagnosis and recent imaging matter
Back or neck pain can arise from discs, facet joints, nerve roots, muscles, sacroiliac joints, fractures, inflammation, infection, tumour or referred pain. A spine injection should not be selected from symptoms alone. The referral, examination and recent MRI or CT should support the proposed target and exclude important conditions that require a different pathway.
What happens during the procedure?
- You are positioned on the CT table, often lying on your stomach, back or side depending on the target.
- A short planning scan identifies the safest needle route.
- The skin is cleaned and local anaesthetic is used to numb the entry site.
- A fine needle is advanced in stages, with limited CT images used to check position.
- Contrast may be used where required, followed by the planned medication.
- The needle is removed, a dressing is applied and you are observed according to the procedure and your symptoms.
What may be injected?
A spinal injection may involve local anaesthetic to provide temporary pain relief or diagnostic information, corticosteroid to reduce inflammation, or another specifically selected treatment depending on the clinical indication.
At MBR Health, our usual approach is not simply to block pain, but to assess whether there is a structural target that may benefit from a regenerative strategy. Where appropriate, this may involve platelet-rich plasma (PRP) or other regenerative cellular therapies. The treatment selected, volume and dose depend on the imaging findings, the suspected pain generator and the overall clinical context.
Corticosteroid may reduce inflammation and provide symptom relief, but it does not repair a structurally damaged disc, ligament or joint. Relief may therefore be temporary, incomplete or absent. Regenerative treatments such as PRP are used with the aim of supporting and amplifying the body’s healing response, rather than simply masking pain.
Radiation and safety
CT uses ionising radiation. The scanned area and number of images should be limited to what is required for safe needle placement and confirmation. The expected benefit of obtaining accurate access is weighed against the small radiation exposure. Tell the clinic if you are pregnant or may be pregnant.
After the procedure
Temporary numbness, heaviness or weakness can occur when local anaesthetic affects a nearby nerve. For this reason, transport and driving restrictions may apply. Follow the procedure-specific instructions supplied by MBR Health rather than relying on general online advice.
| Spine injections are not a substitute for urgent assessment of progressive weakness, new bowel or bladder dysfunction, saddle numbness, fever, major trauma or suspected infection. |
Related Patient Guides
- PG7001 Specialist Image-Guided Injections: Why Imaging Guidance Matters
- PG7003 Ultrasound-Guided Joint, Tendon and Bursa Injections
- PG7004 What to Expect During an Image-Guided Procedure
- PG7005 Preparing for an Image-Guided Injection: Medicines, Blood Thinners and Infection
- PG7006 CT Guidance or Ultrasound Guidance: Why the Modality Matters
- PG7007 Post-Injection Care: The First 24–72 Hours
- PG7008 Pain, Numbness and Weakness After an Injection: What Is Normal?
- PG7009 Risks and Limitations of Image-Guided Procedures
- PG7010 When to Contact MBR Health or Seek Urgent Medical Care
Frequently Asked Questions
For other FAQs please visit our FAQs page
Will I be awake?
Most CT-guided spine injections are performed with the patient awake and the skin numbed with local anaesthetic. Any sedation arrangements must be confirmed before the appointment and may change fasting and transport requirements.
How soon will I know whether it worked?
Local anaesthetic may produce short-lived change within hours. A corticosteroid effect, when it occurs, may take several days. A pain diary can help separate immediate diagnostic response from later therapeutic response.
Can a spine injection prevent surgery?
Sometimes an injection can reduce symptoms and support rehabilitation, but it does not reverse every structural problem. Some patients still require specialist or surgical assessment.
| Important: General information only. Your procedure, medication instructions, transport requirements and aftercare may differ. |
PATIENT GUIDE • PG-7002 [Patient information: CT guidance provides cross-sectional views of bone, nerves, soft tissues and the planned needle pathway for selected spinal procedures.]
Searching for an Elite Injection Clinic on the Gold Coast? Precision Matters
For patients comparing injection clinics on the Gold Coast, the quality of imaging and targeting matters. MBR Health uses advanced diagnostic imaging, including Spectral CT and clinic-developed MRI protocols, to better understand the structure being treated. This allows image-guided injections to be planned around the patient’s anatomy, diagnosis and treatment intent rather than using a generic injection approach.
