Endovascular Coiling
Learn about endovascular coiling, a minimally invasive treatment for selected brain aneurysms in Singapore. Understand how coiling works, who may benefit, recovery, risks and personalised treatment planning by Dr Manish Taneja at the Supreme Vascular and Interventional Clinic.

Endovascular Coiling in Singapore
A Minimally Invasive Treatment for Selected Brain Aneurysms
A diagnosis of a brain aneurysm can raise many questions, including whether treatment is necessary and which treatment option may be most appropriate.
Endovascular coiling is one of the most established minimally invasive treatments for selected brain aneurysms. Using advanced catheter-based techniques, tiny platinum coils are placed inside the aneurysm to reduce blood flow into the weakened area of the blood vessel. This encourages the aneurysm to seal over time, helping to reduce the risk of rupture or rebleeding in appropriate patients.
At the Supreme Vascular and Interventional Clinic, endovascular coiling is performed as part of a comprehensive neurointerventional care pathway led by Dr Manish Taneja, a dual-trained neurointerventional and peripheral vascular intervention specialist. From diagnosis and imaging through treatment planning, the procedure itself and long-term follow-up, patients receive specialist-led care under one roof.
Whether you have been newly diagnosed with a brain aneurysm, are seeking a second opinion or have been referred for treatment, our focus is to help you understand your options and make informed decisions with confidence.
Treatment Overview
| Treatment Type | Minimally invasive endovascular procedure |
|---|---|
| Commonly used for | Selected brain aneurysms |
| Specialty | Neurointervention |
| Treatment Goal | Reduce blood flow into the aneurysm and lower the risk of rupture |
| Anaesthesia | Usually performed under general anaesthesia |
| Hospital stay | Depends on your condition and whether the aneurysm has ruptured |
| Recovery | Varies depending on the individual and the complexity of treatment |
What Is Endovascular Coiling?
Understanding This Minimally Invasive Treatment
Endovascular coiling is a minimally invasive procedure used to treat selected brain aneurysms without the need for open brain surgery.
During the procedure, a microcatheter is carefully guided through the blood vessels to the aneurysm. Soft platinum coils are then placed inside the aneurysm sac. These coils encourage blood clot formation within the aneurysm, reducing blood flow into the weakened area while preserving blood flow through the normal artery.
Unlike traditional open surgery, endovascular coiling is performed from within the blood vessels using advanced image-guided techniques. For many patients, this means treatment can be achieved without making an incision in the skull.
Endovascular coiling has become an established treatment option for many brain aneurysms. However, not every aneurysm is suitable for coiling, and treatment recommendations should always be based on a detailed clinical assessment and imaging review.

What Conditions Can Endovascular Coiling Treat?
Endovascular coiling is most commonly used to treat selected brain aneurysms, including:
- Ruptured brain aneurysms causing subarachnoid haemorrhage (Ruptured brain aneurysms are fatal and at least approximately 40% die immediately.)
- Unruptured brain aneurysms considered at increased risk of rupture
- Wide-neck aneurysms (sometimes with additional techniques such as balloon-assisted or stent-assisted coiling)
- Certain recurrent aneurysms requiring further treatment
Whether coiling is appropriate depends on several factors, including the size, shape and location of the aneurysm, the anatomy of the surrounding blood vessels and the patient's overall health.
For some patients, alternative treatments such as flow diversion, surgical clipping or continued monitoring may be more appropriate.
Is Endovascular Coiling the Right Treatment for You?
One of the most common questions patients ask is:
"Is coiling the best treatment for my brain aneurysm?"
There is no single treatment that is right for every patient. The decision depends on a detailed assessment of your individual condition, including:
- The size of the aneurysm
- The shape and neck of the aneurysm
- Its location within the brain
- Whether the aneurysm has ruptured
- The condition of the surrounding blood vessels
- Your age and overall health
- The potential risks and benefits of each treatment option
At the Supreme Vascular and Interventional Clinic, every treatment recommendation is personalised. Dr Manish Taneja carefully reviews your imaging, explains the available treatment options and discusses why one approach may be more suitable than another.
Our goal is not simply to perform a procedure, but to recommend the treatment that offers the most appropriate balance of safety, effectiveness and long-term outcomes for your individual circumstances.
How Does Endovascular Coiling Work?
Treating a Brain Aneurysm from Within the Blood Vessel
Endovascular coiling is performed using advanced image-guided techniques that allow specialists to treat a brain aneurysm from inside the blood vessel without the need for open brain surgery.
During the procedure, a thin catheter is carefully guided through the body's blood vessels through the groin or wrist until it reaches the arteries supplying the brain. Through this catheter, specialised soft platinum coils are placed inside the aneurysm.
Once positioned, the coils slow blood flow into the aneurysm, encouraging a stable blood clot to form within the aneurysm sac. Over time, this helps seal the aneurysm from the circulation while preserving normal blood flow through the parent artery.
The procedure is performed using continuous imaging guidance to allow precise placement of the coils and careful assessment throughout the treatment.
For some aneurysms, additional devices such as balloons or stents may be used to help support coil placement. Your specialist will determine the most appropriate technique based on the aneurysm's size, shape and location.


Why Is Endovascular Coiling Recommended?
Every Brain Aneurysm is Different
Not every brain aneurysm requires treatment, and not every aneurysm is suitable for endovascular coiling.
Choosing the most appropriate treatment involves understanding far more than simply confirming that an aneurysm is present.
Your specialist will carefully assess several factors, including:
- The size of the aneurysm
- Its location within the brain circulation
- The shape and width of the aneurysm neck
- Whether the aneurysm has ruptured
- Blood vessel anatomy
- Your age and general health
- The potential risks of treatment compared with continued observation
A detailed evaluation helps determine whether endovascular coiling is likely to provide the safest and most effective treatment for your individual situation.
At the Supreme Vascular and Interventional Clinic, treatment decisions are based on careful clinical assessment, advanced imaging and shared decision-making, ensuring every patient understands the available options before proceeding.
Endovascular Coiling vs Other Brain Aneurysm Treatments
Understanding Your Treatment Options
Endovascular coiling is one of several established treatment options for brain aneurysms. Depending on the characteristics of your aneurysm, your specialist may also discuss alternative approaches.
Endovascular Coiling
Endovascular coiling is often considered for aneurysms where the anatomy is suitable for coil placement. It has become an established minimally invasive treatment and avoids the need for open brain surgery.
Stent-Assisted Coiling
For selected wide-neck or anatomically complex aneurysms, a permanent stent may be used to provide additional support during coil placement. The stent is positioned across the neck of the aneurysm within the parent artery, helping to keep the coils securely within the aneurysm.
Flow Diversion
Flow diversion uses a specialised stent-like device placed within the parent artery rather than inside the aneurysm itself. It may be recommended for selected aneurysms that are difficult to treat with coiling alone, particularly larger or wide-neck aneurysms.
Surgical Clipping
Surgical clipping is performed through open brain surgery, where a neurosurgeon places a clip across the neck of the aneurysm to stop blood entering it.
For some patients, surgical clipping remains the most appropriate treatment depending on the aneurysm's location, anatomy and other clinical factors.
Monitoring
Not all brain aneurysms require immediate treatment.
Some small or low-risk aneurysms may be managed with regular monitoring and follow-up imaging, particularly when the potential risks of treatment outweigh the benefits.
Your specialist will explain whether observation or intervention is the most appropriate approach based on your individual circumstances.
Other Endovascular Devices for Intracranial Aneurysms
The most appropriate endovascular treatment depends on the aneurysm's size, shape, location, neck width and relationship with the surrounding blood vessels.
| Treatment / Device | Where It Is Used | How It Works |
|---|---|---|
| Endovascular Coiling | Selected intracranial aneurysms | Platinum coils are placed inside the aneurysm to reduce blood flow into the aneurysm and promote clotting. |
| Stent-Assisted Coiling | Selected wide-neck intracranial aneurysms | A permanent stent supports coil placement and helps keep the coils within the aneurysm. |
| Flow Diverter | Selected complex, large or wide-neck intracranial aneurysms | A specialised mesh device is placed across the aneurysm to redirect blood flow away from the aneurysm. |
| Intrasaccular Device | Selected intracranial aneurysms with suitable anatomy | A device is placed directly inside the aneurysm sac to disrupt blood flow and promote aneurysm closure. |
The Importance of Personalised Treatment Planning
There Is No "One-Size-Fits-All" Treatment for Brain Aneurysms
One of the most important parts of managing a brain aneurysm is choosing the right treatment—not simply choosing the newest treatment.
At the Supreme Vascular and Interventional Cinic, treatment recommendations are based on a comprehensive assessment that considers your diagnosis, imaging findings and long-term health.
Dr Manish Taneja will review:
- Your symptoms and medical history
- Previous CT, MRI or cerebral angiography findings
- The anatomy of the aneurysm and surrounding blood vessels
- The potential benefits and limitations of each treatment option
- Your individual goals and preferences
By taking the time to explain the findings and discuss all appropriate treatment options, we aim to help patients make informed decisions with confidence.
Why Choose the Supreme Vascular and Interventional Clinic for Endovascular Coiling?
Specialist Brain-to-Body Expertise in Minimally Invasive Neurointervention
Choosing where to receive treatment is about more than selecting a procedure. It is about choosing a specialist who can accurately diagnose your condition, recommend the most appropriate treatment and provide ongoing care throughout your recovery.
At the Supreme Vascular and Interventional Clinic, endovascular coiling is performed as part of a comprehensive neurovascular care pathway led by Dr Manish Taneja, a dual-trained neurointerventional and peripheral vascular intervention specialist.
Specialist Expertise Across Brain and Body
Dr Manish Taneja's expertise extends across both neurointervention and peripheral vascular intervention, providing a comprehensive understanding of blood vessel conditions affecting the brain and the rest of the body.
One Specialist Throughout Your Journey
From your first consultation and imaging review to treatment planning, the procedure itself and follow-up care, you will continue to be managed by the same specialist.
This continuity helps ensure clear communication, consistent clinical decision-making and personalised care at every stage of your treatment.
Advanced Image-Guided, Minimally Invasive Treatment
Endovascular coiling is performed using advanced imaging technology and minimally invasive techniques designed to treat selected brain aneurysms with precision while avoiding the need for open brain surgery in appropriate patients.
Personalised Care and Shared Decision-Making
Every patient is different, and every aneurysm is unique.
We believe patients should understand their diagnosis, the available treatment options and the reasons behind each recommendation before making a decision.
Our role is to guide you through that process with clear explanations, evidence-based recommendations and compassionate support.
Potential Benefits of Endovascular Coiling
A Minimally Invasive Treatment Option for Selected Brain Aneurysms
For appropriately selected patients, endovascular coiling offers an effective minimally invasive treatment option for certain brain aneurysms. As every aneurysm is different, the potential benefits vary depending on the aneurysm's size, location, anatomy and your overall health.
Potential benefits of endovascular coiling may include:
Minimally Invasive Treatment
Unlike surgical clipping, endovascular coiling is performed through the blood vessels using a catheter, avoiding the need for open brain surgery or an incision in the skull.
Reduced Risk of Aneurysm Rupture
By reducing blood flow into the aneurysm, coiling helps prevent continued filling of the weakened blood vessel and aims to reduce the risk of future rupture or rebleeding in appropriate patients.
Preservation of Normal Blood Flow
The procedure is designed to treat the aneurysm while maintaining blood flow through the surrounding arteries, helping preserve normal circulation to the brain.
Personalised Treatment
Endovascular coiling can be tailored to the characteristics of each aneurysm. Depending on the anatomy, additional techniques such as balloon-assisted or stent-assisted coiling may be recommended to achieve a safe and durable result.
Shorter Recovery Compared with Open Surgery
Because the procedure is minimally invasive, many patients experience a shorter recovery and avoid the larger surgical incision associated with traditional open brain surgery. Recovery time, however, depends on the individual's condition and whether the aneurysm has ruptured.
It's important to remember: Endovascular coiling is not the most appropriate treatment for every brain aneurysm. Treatment recommendations should always be based on a thorough clinical assessment and detailed imaging review.
What Are the Potential Risks and Limitations?
Understanding the Benefits and Risks of Treatment
All medical procedures involve potential risks, and endovascular coiling is no exception. Before recommending treatment, your specialist will explain the potential benefits, possible complications and alternative treatment options to help you make an informed decision.
Potential risks may include:
- Bleeding or bruising at the catheter insertion site
- Blood clot formation
- Blood vessel injury
- Coil movement or incomplete occlusion of the aneurysm
- A small risk that further treatment may be required in the future
- Rare reactions to contrast dye or medications used during the procedure
The likelihood of these risks varies depending on factors such as the aneurysm's anatomy, whether it has ruptured and your overall health.
At the Supreme Vascular and Interventional Clinic, patient safety begins long before the procedure. Careful assessment, advanced imaging, meticulous treatment planning and experienced image-guided techniques are all important in helping reduce procedural risks and achieve the most appropriate outcome.
Recovery After Endovascular Coiling
What Can You Expect After Treatment?
Recovery following endovascular coiling varies from person to person and depends on several factors, including whether the aneurysm was ruptured or unruptured, the complexity of the procedure and your overall health.
After treatment, you will be monitored closely by your care team before being discharged or transferred for ongoing care if required.
Your specialist will provide personalised advice on:
- Caring for the catheter insertion site
- Returning to normal daily activities
- Medications following the procedure
- Follow-up imaging and review appointments
- Symptoms that should prompt urgent medical attention
Many patients treated for an unruptured brain aneurysm are able to return to their normal activities sooner than those undergoing open brain surgery. However, recovery timelines vary, and it is important to follow your specialist's recommendations throughout the healing process.
For unruptured brain aneurysms, recovery is relatively fast. Patients spend a short time in the hospital for observation, typically discharging home within 1 to 2 days. For ruptured aneurysms (emergency treatment following a brain bleed), care is intensive due to the bleed itself. Patients require immediate ICU monitoring (especially during the critical first 24 hours) and typically stay in the hospital for 2 to 3 weeks or longer, depending on severity and complications.
Recovery does not end when you leave the hospital. Follow-up imaging is often an important part of long-term care to confirm that the aneurysm remains successfully treated and to determine whether any further monitoring is required.
Dive Deeper
- What Happens Before, During, and After During an Endovascular Procedure?
- How to Prepare for Brain Aneurysm Coiling Procedure
- Recovery After an Unruptured Brain Aneurysm Coiling
- Recovery After a Ruptured Brain Aneurysm Coiling
Continuum of Care at the Supreme Vascular and Interventional Clinic
Supporting You Beyond the Procedure
At our specialized clinic in Singapore, treatment is viewed as part of a broader continuum of care rather than a single procedure. From your initial consultation through diagnosis, advanced imaging, personalised treatment planning, the procedure itself and long-term follow-up, your care is led by the same specialist.
This continuity allows Dr Manish Taneja to monitor your recovery, review follow-up imaging, answer your questions and provide ongoing recommendations based on your progress.
For many patients, having one specialist oversee every stage of the journey offers reassurance, consistency and a clearer understanding of their condition and treatment plan. Whether you are a Singapore resident or an international patient seeking specialist neurointerventional care, our focus is on providing compassionate, personalised care supported by advanced minimally invasive treatment techniques.
Your Endovascular Coiling Treatment Journey
| Step | Stage | Description |
|---|---|---|
| 1 | Consultation & assessment | Initial patient discussion and evaluation. |
| 2 | Imaging review & Treatment planning | Assess aneurysm anatomy to determine the most suitable treatment approach. |
| 3 | Endovascular Coiling Treatment | Place platinum coils inside the aneurysm using minimally invasive techniques. |
| 4 | Recovery & Monitoring | Receive personalised guidance and monitoring after your procedure. |
| 5 | Follow-Up & Continuum of Care | Continue specialist reviews and imaging throughout your recovery journey. |
Frequently Asked Questions About Endovascular Coiling
Why would my doctor recommend endovascular coiling for a brain aneurysm?
Endovascular coiling may be recommended when the characteristics of a brain aneurysm make it suitable for this minimally invasive treatment approach.
Your specialist will consider factors including the aneurysm's size, shape, location, whether it has ruptured and your overall health before recommending treatment.
Is endovascular coiling safer than brain surgery?
Endovascular coiling and surgical clipping are different treatment approaches, and neither option is automatically suitable for every patient.
For selected aneurysms, coiling offers a minimally invasive alternative to open surgery. However, the most appropriate treatment depends on your individual aneurysm characteristics and overall circumstances. Noawadays, 9/10 aneurysms are suirtable for endovascular treatments.
Your specialist will discuss the potential benefits and risks of each option during your consultation.
How long does endovascular coiling take?
The duration of an endovascular coiling procedure varies depending on the complexity of the aneurysm and the treatment approach required. The endovascular coiling procedure usually takes a few hours in a specialized neurovascular suite. Modern advances now allow many brain aneurysms to be treated in under 90 minutes.
Your specialist will provide more specific information based on your individual condition and treatment plan.
How long does it take to recover after endovascular coiling?
Recovery varies depending on whether the aneurysm was ruptured or unruptured, the complexity of treatment and your overall health. Some people may need to spend the night, or even a couple of days in the hospital. Others may be released quickly.
Your specialist will provide personalised guidance on returning to daily activities and attending follow-up appointments.
Can a brain aneurysm come back after coiling?
Follow-up care is an important part of aneurysm treatment.
In some cases, further monitoring or additional treatment may be required depending on how the aneurysm responds after coiling. Regular follow-up imaging allows your specialist to assess the long-term outcome of treatment.
What is the difference between coiling, stent-assisted coiling and flow diversion?
These are different endovascular techniques used to treat brain aneurysms.
- Coiling: Soft coils are placed inside the aneurysm to reduce blood flow into the aneurysm sac.
- Stent-assisted coiling: A small stent may be used to support coil placement, particularly for certain wide-neck aneurysms.
- Flow diversion: A specialised device is placed within the parent artery to redirect blood flow away from the aneurysm.
The most suitable technique depends on the aneurysm anatomy and your individual situation.
Who performs endovascular coiling in Singapore?
Endovascular coiling requires specialised expertise in neurovascular anatomy, image-guided procedures and minimally invasive treatment techniques.
At the Supreme Vascular and Interventional Clinic in Singapore, endovascular coiling is performed by Dr Manish Taneja, a dual-trained neurointerventional and peripheral vascular intervention specialist with expertise in treating vascular conditions affecting both the brain and the body.
Patients receive specialist-led care covering diagnosis, treatment planning, minimally invasive intervention and follow-up under one roof.
Specialist Assessment for Endovascular Coiling in Singapore
Choosing the right treatment for a brain aneurysm is an important decision. We believe every patient deserves a clear understanding of their diagnosis, treatment options and the reasons behind each recommendation. With expertise across neurointervention and vascular care, Dr Manish Taneja provides personalised, minimally invasive treatment planning focused on achieving the safest and most appropriate approach for each patient.
If you have been diagnosed with a brain aneurysm, are seeking a second opinion or would like to understand whether endovascular coiling may be suitable for you, a specialist consultation can help clarify your options.
- Cerebral Aniography
- Flow Diversion
- Balloon-Assisted Coiling
- Stent-Assisted Coiling
- AVM Embolisation
- DAVF Embolisation

