22/03/2021
Transcatheter coil embolization of right posterior communicating artery saccular aneurysm
from https://mayfieldclinic.com:
"Overview
Coil embolization is a minimally invasive procedure to treat an aneurysm by filling it with material that closes off the sac and reduces the risk of bleeding. It is performed from "within" the artery (endovascular) through a steerable catheter inserted into the blood stream at the groin and guided to the brain. Tiny coils, glue, or mesh stents are used to promote clotting and close off the aneurysm.
What is aneurysm coiling?
The goal of endovascular coiling is to isolate an aneurysm from the normal circulation without blocking off any small arteries nearby or narrowing the main vessel. Endovascular describes the minimally invasive technique of accessing the aneurysm from within the bloodstream, specifically during angiography. The bloodstream is entered through the femoral artery in the upper leg. A flexible catheter is advanced from the femoral artery to one of four arteries in the neck that lead to the brain. The doctor steers the catheter through the blood vessels while injecting a special dye that makes them visible on the monitor. The result is a kind of roadmap of the arteries.
Once the catheter reaches the aneurysm, a very thin platinum wire is inserted. The wire coils up as it enters the aneurysm and is then detached. Multiple coils are packed inside the dome to block normal blood flow from entering. Over time, a clot forms inside the aneurysm, effectively removing the risk of aneurysm rupture. Coils remain inside the aneurysm permanently. Coils are made of platinum and other materials, and come in a variety of shapes, sizes, and coatings that promote clotting. Coils accomplish from the inside what a surgical clip would accomplish from the outside: they stop blood from flowing into the aneurysm but allow blood to flow freely through the normal arteries."
CTTO: Dr. Joseph Cabantog (Interventional Radiologist)
