At a glance
Interventional radiology embolization is a minimally invasive procedure in which a doctor deliberately blocks a blood vessel to cut off blood supply to a problem area, such as a tumor, a bleeding site, or an abnormal cluster of vessels.
A thin, flexible tube called a catheter is threaded through a small puncture, usually in the wrist or groin, and guided to the target vessel using live X-ray imaging. Once in position, the doctor releases tiny blocking agents, such as microscopic beads, coils, or medical-grade glue, directly into that vessel. Without a blood supply, the target tissue shrinks, stops bleeding, or becomes easier to remove surgically.
Medical Condition
Embolization is used whenever stopping blood flow to a specific area is safer or more effective than open surgery. It covers a wide range of conditions across many organ systems.
- Uterine fibroids (non-cancerous growths in the womb) causing heavy periods or pelvic pain, treated with uterine fibroid embolization (UFE)
- Liver tumors, both primary (hepatocellular carcinoma) and secondary (metastases), treated with transarterial embolization or chemoembolization (TACE)
- Active internal bleeding, such as after trauma, childbirth, or gastrointestinal hemorrhage (bleeding in the digestive tract)
- Arteriovenous malformations (AVMs), which are tangles of abnormal blood vessels in the brain, spine, or organs
- Prostate artery embolization (PAE) for benign prostatic hyperplasia (an enlarged prostate) causing urinary problems
- Hypersplenism or a massively enlarged spleen causing blood cell destruction
- Varicocele (enlarged veins around the testicle) affecting fertility or causing discomfort
- Bone or soft-tissue tumors where reducing blood supply before surgery limits blood loss during the operation
- Pulmonary arteriovenous fistulas (abnormal connections between arteries and veins in the lungs)
Embolization is not suitable for every patient. Your interventional radiologist will review your full case before recommending it.
- Severe allergy to contrast dye (the fluid injected to make vessels visible on X-ray) that cannot be managed with pre-medication
- Severely impaired kidney function, because contrast dye can further stress the kidneys
- Blood clotting disorders that cannot be corrected before the procedure
- Pregnancy, in most circumstances, because of radiation exposure and some embolic agents
- Vessels that are too small, too tortuous, or otherwise impossible to catheterize safely
Risks & Complications
Embolization is generally well tolerated, but like any procedure that enters the body, it carries recognized risks. Your doctor will weigh these against the risks of leaving the condition untreated.
- Post-embolization syndrome: fever, nausea, fatigue, and pain in the treated area for a few days after the procedure, which is the body's normal response to blocked tissue
- Pain at or near the treated site, which can range from mild to significant and usually peaks in the first 24 to 48 hours
- Bruising or small blood collection (hematoma) at the catheter entry point in the wrist or groin
- Contrast dye reaction, from a mild skin rash to, rarely, a more serious allergic response
- Non-target embolization, where blocking agents accidentally travel to a nearby vessel and affect healthy tissue
- Infection at the catheter site or in the treated area
- Temporary worsening of kidney function from the contrast dye, particularly in patients with pre-existing kidney disease
- Incomplete treatment, where some blood supply persists and the procedure needs to be repeated
- Damage to the artery used for access, such as a small tear or spasm of the vessel wall
- Rare but serious: stroke, unintended organ damage, or prolonged vessel injury requiring further intervention
Preparation & Procedure
Your care team will give you specific instructions based on your condition and the type of embolization planned. The steps below reflect what most hospitals require.
In the days before the procedure, patients are typically asked to stop blood thinners (medications that slow clotting) on a schedule set by their doctor. Smoking impairs vessel health and tissue recovery, so most teams ask patients to stop well before the procedure. Alcohol is usually avoided for at least 24 to 48 hours beforehand.
Eating and drinking are usually stopped for six hours before the procedure to reduce the risk of complications if sedation or general anaesthesia is needed. Clear water may be allowed up to two hours before, but confirm this with your hospital.
Pre-procedure tests are commonly ordered to make sure you are safe to proceed and to plan the exact approach.
- Blood tests to check kidney function, liver function, and clotting ability
- Imaging, such as CT (computed tomography) or MRI, to map the target vessels before the procedure
- An ECG (electrocardiogram, a tracing of the heart's electrical activity) if there is any concern about heart health
- A pregnancy test for women of childbearing age, because radiation and some embolic agents are not safe in pregnancy
- Allergy assessment and, if needed, pre-medication to reduce the chance of a reaction to contrast dye
On the day of the procedure, a team of nurses, a radiologist, and often an anaesthetist (a doctor who manages sedation) will prepare you in the procedure room, also called an angio suite. Here is what typically happens, step by step.
- A cannula (a small plastic tube) is placed in a vein in your arm to allow fluids and medications to be given.
- The skin over the entry point, usually the wrist or groin, is cleaned and numbed with a local anaesthetic (numbing injection).
- A small puncture is made, and a short plastic sheath is inserted to keep the entry point stable.
- The catheter is threaded through the sheath and guided toward the target vessel while the team watches on a live X-ray screen.
- Contrast dye is injected to create a detailed picture of the blood vessels, called an angiogram.
- Once the catheter tip is in the right position, the embolic agent (blocking material) is released slowly and carefully.
- Another angiogram confirms that the target vessel is blocked and that surrounding vessels are unaffected.
- The catheter and sheath are removed, and firm pressure or a small closure device seals the puncture site.
- You are moved to a recovery area for monitoring.
Aftercare
Most patients stay in hospital for at least one night so that pain, blood pressure, and the puncture site can be monitored closely. The length of stay depends on the organ treated, the complexity of the procedure, and how you respond in the hours after.
- Bed rest is usually advised for several hours after the procedure, especially if the groin was used as the access point, to let the puncture site close properly.
- Pain relief is given for post-embolization syndrome, which can cause fever and aching in the treated area for two to seven days.
- The puncture site should be kept dry and clean; your nurse will give you dressing-change instructions before you leave hospital.
- Strenuous activity, heavy lifting, and sexual activity are usually restricted for one to two weeks, though the exact timeframe depends on where in the body the embolization was performed.
- Driving is not recommended on the day of discharge or while strong pain medication is being used.
- Blood tests and imaging follow-up, often a CT or MRI a few weeks to months later, are scheduled to check whether the target vessel remains blocked and whether the treated area has responded as expected.
- For conditions like uterine fibroids or liver tumors, several rounds of imaging may be needed over months to years to assess long-term response.
- Report fever above 38.5 degrees Celsius, increasing rather than decreasing pain, swelling or bleeding at the access site, or any new neurological symptoms such as weakness or confusion to your doctor promptly.
- Staying well hydrated in the days after the procedure helps the kidneys clear contrast dye from the body.
Cost & What Determines It
The cost of embolization varies widely because it is not a single standardized operation. The organ being treated, the materials used, the hospital setting, and the country where you receive care each pull the price in a different direction.
- Disease complexity and stage: a single small fibroid requires far less time and fewer materials than a large liver tumor with multiple feeding vessels.
- Type of embolic agent: basic coils or particles cost less than drug-eluting beads (tiny beads that release chemotherapy drugs) used in procedures like TACE for liver cancer.
- Number of sessions: some conditions are controlled in one session; others, such as advanced liver tumors, may require several repeat procedures over months.
- Hospital class and country: a university hospital in a high-income country charges differently from a private specialist hospital in Southeast Asia or the Middle East.
- Length of hospital stay: overnight observation adds room, nursing, and monitoring costs; a more complex procedure or a complication can extend the stay significantly.
- Anaesthesia type: local anaesthesia with mild sedation costs less than general anaesthesia managed by a separate anaesthetist.
- Pre- and post-procedure imaging: CT or MRI scans used to plan the procedure and to confirm results are usually charged separately.
- Additional medications: antibiotics, pain management drugs, and any contrast dye pre-medication add to the overall bill.
Hospital packages, when offered, commonly include the procedure room fee, the interventional radiologist's fee, standard nursing care, and basic embolic materials. Items that are frequently billed separately include advanced embolic agents such as drug-eluting beads, anaesthetist fees, pre-procedure imaging, overnight room upgrades, and any follow-up CT or MRI.
BPJS Kesehatan covers embolization only when it is performed at an accredited facility within Indonesia's referral network, and it does not cover treatment abroad. Most Indonesian private health insurance policies also exclude overseas care, meaning patients who choose to travel for this procedure typically pay out of pocket or rely on an international health insurance plan that explicitly covers planned treatment abroad. Before you book any appointment, ask the hospital for a written cost estimate that itemizes each component, including embolic materials and follow-up scans, so there are no unexpected charges after you arrive.
Frequently Asked Questions
How many sessions of embolization will I need?
Most patients need only one session, though your doctor may recommend a second if the target blood vessel refills or the treated area does not respond fully. The number depends on what is being treated, such as a uterine fibroid (a non-cancerous growth in the womb), a liver tumor, or an abnormal blood vessel. Your radiologist will review imaging results afterward to decide whether further treatment is needed.
What does embolization feel like during and after the procedure?
During the procedure you are usually awake but kept comfortable with sedation, so most people feel little more than pressure near the small incision site. Afterward, a cramping or aching sensation in the treated area is common for a day or two, and doctors typically manage this with pain relief medication. Some patients also feel mild nausea or a low fever in the first 24 to 48 hours, which is the body's normal response to the blocked blood supply.
How soon will I know if the embolization worked?
Early signs, such as reduced bleeding or less pain, can appear within days, but the full effect often takes several weeks as the treated tissue gradually shrinks or heals. Your doctor will usually schedule a follow-up scan, such as an MRI or CT, a few weeks after the procedure to measure the response. How quickly you notice improvement also depends on what condition was treated and how large the affected area was.
How much does embolization cost?
The cost varies based on several factors specific to this procedure, including the complexity of the blood vessel being blocked, the type and amount of embolic agent (the material injected to close the vessel) used, the length of your hospital stay, and the class of hospital or imaging center you choose. Getting a written estimate directly from the hospital is the most reliable way to understand what you will actually pay.
This page is general information, not a substitute for medical advice. Every case is different. Your doctor decides what is right for you.
