Comprehensive Guide to Interventional Radiology
Your complete resource for understanding minimally invasive, image-guided medical procedures like steroid injections and hydrodilatation.
Understanding Interventional Radiology
Interventional Radiology (IR) uses minimally invasive, image-guided procedures to diagnose and treat diseases. We focus on precise CT and Ultrasound-guided therapeutic injections. By visualizing anatomy in real-time, we ensure millimetre-perfect accuracy, avoiding critical structures and maximizing therapeutic benefit.
CT Guidance
- Deep spinal injections (Epidural, Facet)
- Complex bony anatomy
- Sub-millimetre precision
Ultrasound Guidance
- Superficial joints & tendons
- Real-time dynamic assessment
- No ionizing radiation
Corticosteroid Injections
Corticosteroids are powerful anti-inflammatory medications. When injected directly into an inflamed area (joint, bursa, or around a nerve), they can provide significant pain relief and reduce swelling.
Common Procedures
- Epidural Steroid: For sciatica/radicular pain.
- Facet Joint: For back/neck pain from arthritis.
- Bursa/Tendon: For bursitis or tendonitis.
- Joint Injection: For osteoarthritis.
Important Info
- Relief: Takes 3-7 days to peak.
- Duration: Typically 3-6 months.
- Risks: Infection (rare), temporary flare-up, elevated sugar (diabetics).
Hydrodilatation (Frozen Shoulder)
Hydrodilatation involves injecting a volume of fluid (saline, steroid, and local anaesthetic) into the shoulder joint to stretch the contracted capsule.
The Procedure
- Guidance: Ultrasound or CT confirms needle placement.
- Distension: 20-40mL of fluid is gently injected. You may feel pressure.
- Release: Fluid stretches the capsule to improve range of motion.
Patient Resources & Safety
Pre-Procedure Checklist
- Blood Thinners: Consult doctor. May need to stop 5-7 days prior.
- Driver: Do not drive after. Arrange transport.
- Clothing: Wear loose, comfortable clothing.
After Care
- Pain Log: Keep a record of your pain relief.
- Rest: Take it easy for 24 hours.
- Follow-up: Review with your doctor in 2-4 weeks.
Emergency Warning Signs
Seek medical attention if you experience fever (>38°C), increasing redness/swelling at injection site, or severe headache/weakness.