What is Interventional Radiology?
Interventional radiology is a subspecialty of diagnostic radiology that uses minimally invasive, image-guided procedures to diagnose and treat diseases in nearly every organ system. By combining advanced imaging techniques with specialised medical devices, interventional radiologists are able to perform procedures with a high degree of precision, often reducing or removing the need for traditional open surgery.
Imaging techniques such as x-ray, CT Scan, MRI and ultrasound allow interventional radiologists to see inside the body in real time, guiding fine instruments, catheters, and needles to the exact site of disease through a small incision or puncture in the skin. This image guidance is central to the specialty, allowing treatment to be delivered with accuracy while limiting disruption to the surrounding healthy tissue.
Understanding Interventional Radiology
Compared with traditional open surgery, interventional radiology procedures offer several notable advantages. Because they are minimally invasive, using smaller incisions and causing less tissue disruption, patients typically experience reduced pain, minimal scarring, and faster recovery times. These procedures are also associated with a lower risk of complications such as infection and bleeding.
Patients undergoing interventional radiology procedures often experience shorter hospital stays and a quicker return to their normal activities compared with open surgery. The image guidance used throughout allows for precise delivery of therapy, minimising damage to surrounding healthy tissue and improving overall treatment accuracy, even when the target lies deep within the body.
Common Interventional Radiology Procedures
Interventional radiologists perform a diverse array of minimally invasive procedures, including:
- Angiography
Injecting contrast dye into blood vessels to visualise their structure and identify abnormalities such as blockages or aneurysms.
- Angioplasty and Stenting
Widening a narrowed or blocked blood vessel by inflating a small balloon, then placing a mesh tube, or stent, to keep the vessel open.
- Embolization
Deliberately blocking blood flow to a specific area, such as a tumour or a bleeding vessel, by injecting embolic agents through a catheter.
- Biopsy
Obtaining a tissue sample from an organ using an image-guided needle, to help diagnose cancer and other diseases.
- Drainage
Draining an abscess or fluid collection percutaneously, or through the skin, using image guidance to reach the exact site.
- Tumor Ablation
Destroying a tumour using heat, through radiofrequency or microwave ablation, or cold, through cryoablation, delivered via a needle or probe.
Conditions Treated with Interventional Radiology
Because interventional radiology techniques can be applied across nearly every organ system, the specialty is involved in the diagnosis and treatment of a wide range of conditions, including:
- Uterine cancer: Also known as endometrial cancer, one of the most common cancers of the female reproductive system, in which imaging-guided procedures can support diagnosis and, in some cases, treatment.
- Vascular disease: Conditions involving narrowed or blocked blood vessels, such as peripheral artery disease, which can be treated with angioplasty and stenting to restore blood flow.
- Aneurysms: Weakened, bulging sections of a blood vessel wall, which can be treated with embolization or stenting to reduce the risk of rupture.
- Liver and kidney tumours: Cancerous or non-cancerous growths that can be diagnosed with image-guided biopsy and, in suitable cases, treated directly with tumour ablation or embolization.
- Uterine fibroids: Non-cancerous growths in the uterus that can be treated with embolization to reduce their blood supply and shrink them over time.
- Internal bleeding: Bleeding from an injured or abnormal blood vessel, which can often be controlled through embolization without the need for open surgery.
- Abscesses and fluid collections: Collections of infected or excess fluid within the body, which can be drained percutaneously under image guidance.
When Interventional Radiology May Be Recommended
A doctor may recommend an interventional radiology procedure when a condition can be diagnosed or treated through targeted, image-guided access rather than open surgery. This is often considered in situations such as:
- A tumour or growth requiring biopsy: When a tissue sample is needed to confirm a diagnosis, but the area is difficult or risky to access surgically.
- A narrowed or blocked blood vessel: When blood flow to an organ or limb is restricted, causing pain, poor healing, or organ dysfunction.
- Uncontrolled or unexplained bleeding: When a bleeding vessel needs to be identified and blocked quickly to stabilise a patient.
- A tumor unsuitable for surgery: When a patient's overall health, or the location of a tumour, makes a minimally invasive option preferable to open surgical removal.
- An abscess or fluid collection: When infected or excess fluid needs to be drained but open surgical drainage would be more invasive than necessary.
What to expect from an Interventional Radiology Procedure
- Pre-procedure imaging and planning: Detailed imaging is used beforehand to plan the safest and most precise route to the target area.
- Local anaesthesia or sedation: Many procedures are performed under local anaesthesia, sometimes with sedation, rather than general anaesthesia, though this depends on the specific procedure.
- Image-guided access: A small incision or puncture is made, through which fine instruments are guided to the target site under continuous imaging.
- Shorter recovery: Because incisions are small and tissue disruption is minimal, many patients are able to return home the same day or after a short hospital stay, with a quicker return to normal activities than after open surgery
Because interventional radiology procedures are minimally invasive, most patients recover more quickly than they would after equivalent open surgery, with less pain and a lower risk of complications such as infection or significant bleeding. The specific recovery time depends on the procedure performed and the patient's overall health. Interventional radiology continues to expand the range of conditions that can be diagnosed and treated without open surgery, offering patients an effective, precise, and less invasive alternative.
Our dedicated teams of experienced multidisciplinary specialists and healthcare professionals work together to provide treatment plans tailored to the needs of our patients on their recovery journey.
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