AVM Intracranial Embolization

AVM intracranial embolization, also known as endovascular embolization, is a minimally invasive procedure that reduces the number of abnormal connections between blood vessels in the brain. This procedure is often used to treat cerebral arteriovenous malformations (AVMs), which are complex lesions that can cause neurological injury if they bleed.

When is this procedure recommended?

AVM embolization can be used as a curative therapy or before other treatments. It can help prevent strokes, minimize blood loss, and allow patients to recover faster than from open brain surgery.

How is the procedure performed?

During the procedure, a neurointerventional radiologist inserts a thin, flexible tube called a catheter into a blood vessel, usually in the groin. Utilizing X-Ray imaging the catheter is guided through the vessels to an artery that feeds the AVM. A glue-like substance or other embolizing agent is then injected into the vessels to block blood flow to the AVM. The procedure usually takes a couple of hours, and patients typically need to lie still for 6–8 hours afterward.

What are the benefits?

  • Reduces the size of most AVMs
  • Aids in preventing serious symptoms or rupture
  • Effective in reducing blood flow before other forms of therapy
  • Provides treatment for AVMs that previously were considered inoperable
  • Less invasive and requires significantly less recovery time than open surgery
  • No surgical incision is necessary


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