AVM Embolisation
Learn about AVM embolisation in Singapore, a minimally invasive treatment provided by Dr. Manish Taneja at the Supreme Vascular and Interventional Clinic for selected brain arteriovenous malformations. Understand how it works, treatment options, risks, recovery and specialist care.
AVM Embolisation in Singapore
Minimally Invasive Treatment for Selected Brain Arteriovenous Malformations
AVM embolisation is a minimally invasive neurointerventional procedure used to treat selected patients with a brain arteriovenous malformation (AVM).
A brain AVM is an abnormal connection between arteries and veins in the brain. Instead of blood flowing normally through smaller vessels called capillaries, an AVM creates a direct connection between arteries and veins. This abnormal blood flow can increase pressure within the affected blood vessels and may increase the risk of bleeding or other neurological problems.
During AVM embolisation, a specialist guides a thin catheter through the blood vessels towards the AVM. A specialised embolic material is then delivered through the catheter to block or reduce blood flow through selected abnormal vessels.
AVM embolisation may be used as a treatment on its own in selected cases or as part of a broader treatment strategy involving surgery or stereotactic radiosurgery.
At the Supreme Vascular and Interventional Clinic, neurointerventional treatment is led by Dr. Manish Taneja, a dual-trained neurointerventional and peripheral vascular intervention specialist. With expertise spanning the brain and body, our clinic provides specialist-led vascular and neurointerventional assessment, minimally invasive treatment and continuity of care under one roof.
Treatment Overview
| Treatment Type | Minimally invasive endovascular procedure |
|---|---|
| Also Known As | Brain AVM embolization, arteriovenous malformation embolisation |
| Used for | Selected brain arteriovenous malformations |
| Specialty | Neurointervention |
| Treatment goal | Reduce or block blood flow through abnormal AVM vessels |
| How it works | A catheter delivers specialised embolic material into selected abnormal blood vessels |
| Procedure Access | Catheter inserted through the wrist or groin |
| Anaesthesia | Depends on the individual procedure and clinical circumstances |
| Follow-Up | Neurological review and vascular imaging may be recommended |
| Performed By | Dr Manish Taneja, dual-trained neurointerventional and peripheral vascular intervention specialist |
What Is a Brain AVM?
A brain arteriovenous malformation (AVM) is an abnormal network of blood vessels that creates a direct connection between arteries and veins.
Normally, blood flows from arteries through smaller vessels called capillaries before entering the veins.
In an AVM, this normal capillary network is bypassed. Blood therefore flows directly from arteries into veins through abnormal vessels.
Brain AVMs can vary considerably in their size, location and vascular structure. Some AVMs may be discovered incidentally, while others may cause symptoms such as headaches, seizures or neurological problems. In some cases, an AVM may cause bleeding within or around the brain.
Because every AVM has different anatomy, treatment decisions require detailed brain and blood vessel imaging.
What Is AVM Embolisation?
AVM embolisation is a catheter-based treatment that reduces or blocks blood flow through selected abnormal vessels forming part of a brain AVM.
A thin catheter is guided through the blood vessels towards the AVM using detailed imaging. Specialised embolic material is then delivered through the catheter into selected abnormal blood vessels.
The material blocks or reduces blood flow through those vessels, helping to decrease the blood supply to the AVM. Depending on the AVM's anatomy and treatment goals, embolisation may be performed in one or more treatment sessions.
Embolisation may sometimes be the definitive treatment, but in other patients it is used to make another treatment, such as surgery or stereotactic radiosurgery, safer or more effective.
How Does AVM Embolisation Work?
Blocking Blood Flow Through Abnormal AVM Vessels
Before treatment, detailed imaging is performed to understand the AVM's size, location, feeding arteries and draining veins. During the procedure, a thin catheter is carefully inserted and guided through the blood vessels (generally in the groin) towards the abnormal vascular network.
Specialized embolic material (like glue or coils) is delivered through the catheter and injected into selected vessels supplying the AVM. The embolic material reduces or blocks blood flow through the targeted abnormal vessels.
Imaging is used throughout the procedure to assess the AVM and guide precise delivery of the embolic material. The catheter is then removed once the planned treatment has been completed. AVM embolisation does not remove the AVM surgically. It works from inside the blood vessels to reduce or block blood flow through selected abnormal vessels.
When Might AVM Embolisation Be Recommended?
Redirecting Blood Flow to Help the Artery Heal Naturally
AVM embolisation may be considered for selected patients depending on the AVM's anatomy, location, size and treatment goals.
Your specialist will consider:
- The location of the AVM
- The size and structure of the AVM
- The arteries supplying the AVM
- The veins draining the AVM
- Whether the AVM has previously bled
- Your neurological symptoms
- Your overall health
- The potential risks of treatment
- Whether embolisation should be used alone or alongside another treatment
Not every brain AVM requires embolisation. Some AVMs may be monitored, while others may be treated using surgery, stereotactic radiosurgery, embolisation or a combination of approaches.
The appropriate treatment depends on the individual AVM rather than simply its size or presence.
AVM Embolisation vs Other Brain AVM Treatments
Understanding Your Treatment Options
Embolisation may therefore be the primary treatment for selected AVMs or form part of a staged treatment plan. Your specialist will assess the AVM's detailed vascular anatomy before recommending an approach.
| Treatment | How it works |
|---|---|
| AVM Embolisation | Uses a catheter to deliver embolic material into selected vessels supplying the AVM. |
| Surgical Removal | Surgically removes the AVM from the brain. |
| Stereotactic Radiosurgery | Uses precisely focused radiation to gradually close abnormal AVM vessels. |
| Combination Treatment | Uses two or more approaches when this provides a safer or more effective treatment strategy. |
| Monitoring | Some AVMs may be monitored when treatment risks outweigh potential benefits. |
Potential Benefits of AVM Embolisation
Minimally Invasive Treatment of Abnormal Brain Vessels
For appropriately selected patients, AVM embolisation may provide several potential benefits.For appropriately selected patients, AVM embolisation may provide several potential benefits.
Minimally Invasive Approach
Treatment is performed through the blood vessels using specialised catheters rather than open surgery.
Targets Abnormal Blood Vessels
Embolisation allows the specialist to target selected vessels supplying the AVM.
Can Reduce Blood Flow to the AVM
Blocking selected feeding vessels can reduce the abnormal blood flow through the AVM.
Supports Other Treatments
Embolisation may sometimes be used before surgery or stereotactic radiosurgery to help make subsequent treatment more appropriate.
Can Be Performed in Stages
For some complex AVMs, treatment may be divided into multiple procedures rather than attempting to treat the entire vascular malformation at once.
It is important to remember: Every AVM is different. The potential benefits of embolisation depend on the AVM's anatomy, treatment goals and the patient's individual circumstances.
AVMs are classified into types I to IV:
- Type I AVM poses a lower risk of rupture as it’s a small, compact malformation with a single, direct artery and vein connection.
- Type II AVM is a more extensive vascular malformation, often larger in size, with multiple arterial and venous connections that present a moderate risk of rupture.
- Type III AVM is associated with a higher risk of rupture because it forms a complex malformation of tangled abnormal blood vessels, which are challenging to treat.
- Type IV AVM does not have blood vessels. A direct artery-to-vein connection without a capillary bed increases the risk of rupture.
What Are the Potential Risks and Limitations?
Understanding the Risks of AVM Embolisation
AVM embolisation is a specialised neurointerventional procedure and carries potential risks.
Potential risks may include:
- Blood vessel injury
- Changes in blood flow through the AVM
- Reaction to contrast dye
- Bleeding or bruising at the catheter access site
- Need for additional treatment
The risks depend on factors including the AVM's location, size, vascular anatomy and previous treatment.
Your specialist will discuss the potential benefits, risks and alternative treatment options before recommending embolisation.
Recovery After AVM Embolisation
What Can You Expect After Treatment?
Following AVM embolisation, you will be monitored closely to assess your neurological condition and recovery. Depending on the complexity of treatment, monitoring may include neurological assessment, blood pressure monitoring and follow-up brain imaging.
Your recovery depends on:
- The location and size of the AVM
- The extent of embolisation performed
- Whether the AVM has previously bled
- Whether another treatment is planned
- Your overall neurological condition
Your specialist will provide personalised advice regarding activity, medications, follow-up appointments and further imaging. Some patients may require additional treatment sessions or another form of AVM treatment as part of a staged treatment plan.
Your AVM Embolisation Treatment Journey
| Step | Stage | Description |
|---|---|---|
| 1 | Specialist Neurovascular Assessment | Review your symptoms, medical history and previous brain imaging. |
| 2 | Detailed AVM Imaging | Map the AVM and assess its feeding arteries, vascular structure and draining veins. |
| 3 | Individualised Treatment Planning | Determine whether embolisation alone or combined treatment is most appropriate. |
| 4 | Catheter-Based Embolisation | Guide a catheter to the AVM and deliver specialised embolic material. |
| 5 | Blood Flow Assessment | Use detailed imaging to assess the treated vessels and remaining AVM blood flow. |
| 6 | Recovery & Monitoring | Monitor your neurological condition and recovery following the procedure. |
| 5 | Follow-Up & Further Treatment | Continue specialist review and imaging to determine whether further treatment is required. |
Why Choose the Supreme Vascular and Interventional Clinic for AVM Embolisation?
Specialist Brain-to-Body Vascular Expertise Under One Roof
Brain AVMs require highly specialised understanding of complex blood vessel anatomy and neurointerventional treatment.
At the Supreme Vascular and Interventional Clinic, care is led by Dr Manish Taneja, a dual-trained neurointerventional and peripheral vascular intervention specialist.
Neurointerventional Expertise
Specialist knowledge of the blood vessels supplying the brain supports detailed assessment and catheter-based treatment planning.
Brain-to-Body Vascular Perspective
Dr. Manish Taneja's expertise spans neurointerventional and peripheral vascular procedures, providing a broader understanding of vascular disease.
Minimally Invasive Treatment
Where appropriate, AVM embolisation allows abnormal brain vessels to be treated through the blood vessels rather than open surgery.
Advanced Imaging
Detailed vascular imaging is essential for understanding the AVM's anatomy and guiding precise treatment.
Continuum of Care
From specialist assessment and treatment planning through follow-up and further imaging, Supreme provides continuity of specialist care under one roof.
Frequently Asked Questions
Is AVM embolisation a treatment for brain AVMs?
Yes. Embolisation can be used to treat selected brain AVMs, either as the primary treatment or as part of a broader treatment plan. Other options include:
- Microsurgical removal
- Radiosurgery
- Combined multi-modality treatment approaches
- Conservative monitoring in selected cases
Does embolisation completely remove a brain AVM?
Embolisation reduces or blocks blood flow through selected abnormal vessels. Some AVMs may require additional surgery, radiosurgery or further embolisation.
How is a brain AVM diagnosed?
Brain AVMs are assessed using brain and blood vessel imaging. Depending on the circumstances, imaging may include CT, MRI, CT angiography, MR angiography or cerebral angiography.
Can a brain AVM be treated without open surgery?
Yes. Selected AVMs can be treated using minimally invasive embolization or stereotactic radiosurgery, although the appropriate treatment depends on the AVM's individual characteristics.
What happens after AVM embolisation?
Patients are monitored after treatment and undergo follow-up assessment and imaging to evaluate the treated AVM and determine whether additional treatment is required.
Can an AVM come back after embolisation?
The possibility of residual or recurrent abnormal blood vessels depends on the AVM and the treatment performed. Follow-up imaging is therefore important after treatment.
Specialist Assessment for Brain AVM Embolisation in Singapore
A brain AVM requires detailed assessment of its vascular anatomy before treatment decisions can be made.
At the Supreme Vascular and Interventional Clinic, Dr Manish Taneja provides specialist neurointerventional assessment, advanced vascular imaging review and personalised treatment planning for patients with brain AVMs and other vascular conditions.
With expertise spanning the brain and body, our specialized clinic provides minimally invasive vascular and neurointerventional care with continuity under one roof. If you have been diagnosed with a brain AVM, referred for embolisation or are seeking a specialist second opinion, our team can help you understand your condition and the treatment options available.
- DAVF Embolisation
- Endovascular Embolisation
- Stereotactic Radiosurgery
- Surgical AVM Removal
- Cerebral Angiography
- Brain AVM
- Brain Aneurysm
- Intracranial Vascular Malformation
- Brain Haemorrhage Related to an AVM
